[Lift] Re: Parcing Json
Ah, I didn't know I was missing that. Right, I'll go back to chapter 6
in the book and see how to accomplish that, thank you for the info.
On Jan 15, 9:43 am, David Pollak
wrote:
> On Thu, Jan 14, 2010 at 2:37 PM, Randinn wrote:
> >http://paste.pocoo.org/show/165532/
>
> You have to write code that will copy each of the fields from the case class
> to the mapper object.
>
>
>
>
>
> > On Jan 15, 9:29 am, David Pollak
> > wrote:
> > > On Thu, Jan 14, 2010 at 2:26 PM, Randinn wrote:
> > > > Thank you both for your explanations it seems assigning val
> > > > Observation to Observe is a bad idea, what should I do to get the
> > > > parced information to the Observation map?
>
> > > What does your Observation class look like?
>
> > > > On Jan 15, 8:42 am, Ross Mellgren wrote:
> > > > > Isn't it that the val Observation is being assigned to the (compiler
> > > > synthesized) Observe singleton object? In either case, no save method.
>
> > > > > -Ross
>
> > > > > On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
>
> > > > > > On Thu, Jan 14, 2010 at 1:37 PM, Randinn
> > wrote:
> > > > > > Well here is the latest iteration of the code:
>
> > > > > >http://paste.pocoo.org/show/165511/
>
> > > > > > but I'm getting this error
>
> > > > > > Compiling 11 source files to C:\Users\Randin\Documents\Development
> > > > > > \weather\target\classes at 1263504637934
> > > > > > [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is
> > not a
> > > > > > member of object HelloWorld.this.Observe
> > > > > > Observation.save
>
> > > > > > The Observation method is returning an instance of the Observe case
> > > > class. This class has no "save" method on it, thus the error.
>
> > > > > > ^
> > > > > > [ERROR]one error found
>
> > > > > > I went to 2.0-M1 and did a clean install. I assume save might be
> > the
> > > > > > answer, how close am I?
>
> > > > > > On Jan 4, 1:00 am, Joni Freeman wrote:
> > > > > > > Google Groups does not shine in formatting code snippets. Here's
> > > > nicer
> > > > > > > version:
>
> > > > > > >http://paste.pocoo.org/show/161578/
>
> > > > > > > Cheers Joni
>
> > > > > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > > > > Hi,
>
> > > > > > > > That's almost correct. I did following changes after looking
> > into
> > > > JSON
> > > > > > > > content.
>
> > > > > > > > 1. 'notice' and 'header' are JSON arrays just like 'data'.
> > > > Therefore:
> > > > > > > > case class Observation(notice: List[Notice], header:
> > List[Header],
> > > > > > > > data: List[Data])
>
> > > > > > > > 2. There's optional data in JSON (some datapoints are nulls and
> > > > Scala
> > > > > > > > Int or Double can't take null values). This can be fixed by
> > > > extracting
> > > > > > > > into Option.
>
> > > > > > > > 3. The extracted Observation is in JSON field 'observations'.
> > > > > > > > Therefore:
> > > > > > > > (json \ "observations").extract[Observation]
>
> > > > > > > > Your error stack trace suggests that you have an old version of
> > > > lift-
> > > > > > > > json. Please upgrade to M8, there was a critical bug in case
> > class
> > > > > > > > extraction in older versions.
>
> > > > > > > > Full example which works for me:
>
> > > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > > disclaimer_url: String)
> > > > > > > > case class Header(refresh_message: String, ID: String,
> > main_ID:
> > > > > > > > String, name: String, state_time_zone: String, time_zone:
> > String,
> > > > > > > > product_name: String, state: String)
> > > > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > String,
> > > > > > > > local_date_time: String,
> > > > > > > > local_date_time_full: String, air_temp:
> > Option
> > > > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > > > rel_hum: Option[Int], delta_t:
> > Option[Double],
> > > > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > > > [Double],
> > > > > > > > wind_spd_kmh: Option[Double], press:
> > > > Option[Double],
> > > > > > > > rain_trace: String)
>
> > > > > > > > case class Observation(notice: List[Notice], header:
> > > > List[Header],
> > > > > > > > data: List[Data])
>
> > > > > > > > (json \ "observations").extract[Observation]
>
> > > > > > > > Cheers Joni
>
> > > > > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > > > > I'm having a bit of trouble with Lift Json parcing, I know
> > I'm
> > > > not
> > > > > > > > > doing it correctly but looking at the examples I cannot
> > figure
> > > > out
> > > > > > > > > what, anyway, here is the code in question. If someone
> > could
> > > > point
> > > > > > > > > me in the right direction that would be great, thanks in
> > advance.
>
> > > > > > > > > class HelloWorld {
> > > > > > > > > def howdy = Welcome
Re: [Lift] Re: Parcing Json
On Thu, Jan 14, 2010 at 2:37 PM, Randinn wrote:
> http://paste.pocoo.org/show/165532/
>
You have to write code that will copy each of the fields from the case class
to the mapper object.
>
> On Jan 15, 9:29 am, David Pollak
> wrote:
> > On Thu, Jan 14, 2010 at 2:26 PM, Randinn wrote:
> > > Thank you both for your explanations it seems assigning val
> > > Observation to Observe is a bad idea, what should I do to get the
> > > parced information to the Observation map?
> >
> > What does your Observation class look like?
> >
> >
> >
> >
> >
> > > On Jan 15, 8:42 am, Ross Mellgren wrote:
> > > > Isn't it that the val Observation is being assigned to the (compiler
> > > synthesized) Observe singleton object? In either case, no save method.
> >
> > > > -Ross
> >
> > > > On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
> >
> > > > > On Thu, Jan 14, 2010 at 1:37 PM, Randinn
> wrote:
> > > > > Well here is the latest iteration of the code:
> >
> > > > >http://paste.pocoo.org/show/165511/
> >
> > > > > but I'm getting this error
> >
> > > > > Compiling 11 source files to C:\Users\Randin\Documents\Development
> > > > > \weather\target\classes at 1263504637934
> > > > > [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is
> not a
> > > > > member of object HelloWorld.this.Observe
> > > > > Observation.save
> >
> > > > > The Observation method is returning an instance of the Observe case
> > > class. This class has no "save" method on it, thus the error.
> >
> > > > > ^
> > > > > [ERROR]one error found
> >
> > > > > I went to 2.0-M1 and did a clean install. I assume save might be
> the
> > > > > answer, how close am I?
> >
> > > > > On Jan 4, 1:00 am, Joni Freeman wrote:
> > > > > > Google Groups does not shine in formatting code snippets. Here's
> > > nicer
> > > > > > version:
> >
> > > > > >http://paste.pocoo.org/show/161578/
> >
> > > > > > Cheers Joni
> >
> > > > > > On 3 tammi, 12:20, Joni Freeman wrote:
> >
> > > > > > > Hi,
> >
> > > > > > > That's almost correct. I did following changes after looking
> into
> > > JSON
> > > > > > > content.
> >
> > > > > > > 1. 'notice' and 'header' are JSON arrays just like 'data'.
> > > Therefore:
> > > > > > > case class Observation(notice: List[Notice], header:
> List[Header],
> > > > > > > data: List[Data])
> >
> > > > > > > 2. There's optional data in JSON (some datapoints are nulls and
> > > Scala
> > > > > > > Int or Double can't take null values). This can be fixed by
> > > extracting
> > > > > > > into Option.
> >
> > > > > > > 3. The extracted Observation is in JSON field 'observations'.
> > > > > > > Therefore:
> > > > > > > (json \ "observations").extract[Observation]
> >
> > > > > > > Your error stack trace suggests that you have an old version of
> > > lift-
> > > > > > > json. Please upgrade to M8, there was a critical bug in case
> class
> > > > > > > extraction in older versions.
> >
> > > > > > > Full example which works for me:
> >
> > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > disclaimer_url: String)
> > > > > > > case class Header(refresh_message: String, ID: String,
> main_ID:
> > > > > > > String, name: String, state_time_zone: String, time_zone:
> String,
> > > > > > > product_name: String, state: String)
> > > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > String,
> > > > > > > local_date_time: String,
> > > > > > > local_date_time_full: String, air_temp:
> Option
> > > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > > rel_hum: Option[Int], delta_t:
> Option[Double],
> > > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > > [Double],
> > > > > > > wind_spd_kmh: Option[Double], press:
> > > Option[Double],
> > > > > > > rain_trace: String)
> >
> > > > > > > case class Observation(notice: List[Notice], header:
> > > List[Header],
> > > > > > > data: List[Data])
> >
> > > > > > > (json \ "observations").extract[Observation]
> >
> > > > > > > Cheers Joni
> >
> > > > > > > On 3 tammi, 09:17, Randinn wrote:
> >
> > > > > > > > I'm having a bit of trouble with Lift Json parcing, I know
> I'm
> > > not
> > > > > > > > doing it correctly but looking at the examples I cannot
> figure
> > > out
> > > > > > > > what, anyway, here is the code in question. If someone
> could
> > > point
> > > > > > > > me in the right direction that would be great, thanks in
> advance.
> >
> > > > > > > > class HelloWorld {
> > > > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > > > _root_.java.util.Date}
> > > > > > > > val http = new Http
> > > > > > > > val bos = new ByteArrayOutputStream
> > > > > > > > val myRequest = new Request("
> http://www.bom.gov.au/fwo/IDV60901/
> > > > > > > > IDV60901.94868.json")
> > > > > > > > val rawdata = http(myRequest >>>
[Lift] Re: Parcing Json
http://paste.pocoo.org/show/165532/
On Jan 15, 9:29 am, David Pollak
wrote:
> On Thu, Jan 14, 2010 at 2:26 PM, Randinn wrote:
> > Thank you both for your explanations it seems assigning val
> > Observation to Observe is a bad idea, what should I do to get the
> > parced information to the Observation map?
>
> What does your Observation class look like?
>
>
>
>
>
> > On Jan 15, 8:42 am, Ross Mellgren wrote:
> > > Isn't it that the val Observation is being assigned to the (compiler
> > synthesized) Observe singleton object? In either case, no save method.
>
> > > -Ross
>
> > > On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
>
> > > > On Thu, Jan 14, 2010 at 1:37 PM, Randinn wrote:
> > > > Well here is the latest iteration of the code:
>
> > > >http://paste.pocoo.org/show/165511/
>
> > > > but I'm getting this error
>
> > > > Compiling 11 source files to C:\Users\Randin\Documents\Development
> > > > \weather\target\classes at 1263504637934
> > > > [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
> > > > member of object HelloWorld.this.Observe
> > > > Observation.save
>
> > > > The Observation method is returning an instance of the Observe case
> > class. This class has no "save" method on it, thus the error.
>
> > > > ^
> > > > [ERROR]one error found
>
> > > > I went to 2.0-M1 and did a clean install. I assume save might be the
> > > > answer, how close am I?
>
> > > > On Jan 4, 1:00 am, Joni Freeman wrote:
> > > > > Google Groups does not shine in formatting code snippets. Here's
> > nicer
> > > > > version:
>
> > > > >http://paste.pocoo.org/show/161578/
>
> > > > > Cheers Joni
>
> > > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > > Hi,
>
> > > > > > That's almost correct. I did following changes after looking into
> > JSON
> > > > > > content.
>
> > > > > > 1. 'notice' and 'header' are JSON arrays just like 'data'.
> > Therefore:
> > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > data: List[Data])
>
> > > > > > 2. There's optional data in JSON (some datapoints are nulls and
> > Scala
> > > > > > Int or Double can't take null values). This can be fixed by
> > extracting
> > > > > > into Option.
>
> > > > > > 3. The extracted Observation is in JSON field 'observations'.
> > > > > > Therefore:
> > > > > > (json \ "observations").extract[Observation]
>
> > > > > > Your error stack trace suggests that you have an old version of
> > lift-
> > > > > > json. Please upgrade to M8, there was a critical bug in case class
> > > > > > extraction in older versions.
>
> > > > > > Full example which works for me:
>
> > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > disclaimer_url: String)
> > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > > product_name: String, state: String)
> > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > String,
> > > > > > local_date_time: String,
> > > > > > local_date_time_full: String, air_temp: Option
> > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > [Double],
> > > > > > wind_spd_kmh: Option[Double], press:
> > Option[Double],
> > > > > > rain_trace: String)
>
> > > > > > case class Observation(notice: List[Notice], header:
> > List[Header],
> > > > > > data: List[Data])
>
> > > > > > (json \ "observations").extract[Observation]
>
> > > > > > Cheers Joni
>
> > > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > > I'm having a bit of trouble with Lift Json parcing, I know I'm
> > not
> > > > > > > doing it correctly but looking at the examples I cannot figure
> > out
> > > > > > > what, anyway, here is the code in question. If someone could
> > point
> > > > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > > > class HelloWorld {
> > > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > > _root_.java.util.Date}
> > > > > > > val http = new Http
> > > > > > > val bos = new ByteArrayOutputStream
> > > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > > IDV60901.94868.json")
> > > > > > > val rawdata = http(myRequest >>> bos)
> > > > > > > val bs = bos.toString
> > > > > > > val db = :/("www.bom.gov.au")
>
> > > > > > > val json = parse(bs)
>
> > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > disclaimer_url: String)
> > > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > > String, name: String, state_time_zone:
Re: [Lift] Re: Parcing Json
On Thu, Jan 14, 2010 at 2:26 PM, Randinn wrote:
> Thank you both for your explanations it seems assigning val
> Observation to Observe is a bad idea, what should I do to get the
> parced information to the Observation map?
>
What does your Observation class look like?
>
> On Jan 15, 8:42 am, Ross Mellgren wrote:
> > Isn't it that the val Observation is being assigned to the (compiler
> synthesized) Observe singleton object? In either case, no save method.
> >
> > -Ross
> >
> > On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
> >
> >
> >
> > > On Thu, Jan 14, 2010 at 1:37 PM, Randinn wrote:
> > > Well here is the latest iteration of the code:
> >
> > >http://paste.pocoo.org/show/165511/
> >
> > > but I'm getting this error
> >
> > > Compiling 11 source files to C:\Users\Randin\Documents\Development
> > > \weather\target\classes at 1263504637934
> > > [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
> > > member of object HelloWorld.this.Observe
> > > Observation.save
> >
> > > The Observation method is returning an instance of the Observe case
> class. This class has no "save" method on it, thus the error.
> >
> > > ^
> > > [ERROR]one error found
> >
> > > I went to 2.0-M1 and did a clean install. I assume save might be the
> > > answer, how close am I?
> >
> > > On Jan 4, 1:00 am, Joni Freeman wrote:
> > > > Google Groups does not shine in formatting code snippets. Here's
> nicer
> > > > version:
> >
> > > >http://paste.pocoo.org/show/161578/
> >
> > > > Cheers Joni
> >
> > > > On 3 tammi, 12:20, Joni Freeman wrote:
> >
> > > > > Hi,
> >
> > > > > That's almost correct. I did following changes after looking into
> JSON
> > > > > content.
> >
> > > > > 1. 'notice' and 'header' are JSON arrays just like 'data'.
> Therefore:
> > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > data: List[Data])
> >
> > > > > 2. There's optional data in JSON (some datapoints are nulls and
> Scala
> > > > > Int or Double can't take null values). This can be fixed by
> extracting
> > > > > into Option.
> >
> > > > > 3. The extracted Observation is in JSON field 'observations'.
> > > > > Therefore:
> > > > > (json \ "observations").extract[Observation]
> >
> > > > > Your error stack trace suggests that you have an old version of
> lift-
> > > > > json. Please upgrade to M8, there was a critical bug in case class
> > > > > extraction in older versions.
> >
> > > > > Full example which works for me:
> >
> > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > disclaimer_url: String)
> > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > product_name: String, state: String)
> > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> String,
> > > > > local_date_time: String,
> > > > > local_date_time_full: String, air_temp: Option
> > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > [Double],
> > > > > wind_spd_kmh: Option[Double], press:
> Option[Double],
> > > > > rain_trace: String)
> >
> > > > > case class Observation(notice: List[Notice], header:
> List[Header],
> > > > > data: List[Data])
> >
> > > > > (json \ "observations").extract[Observation]
> >
> > > > > Cheers Joni
> >
> > > > > On 3 tammi, 09:17, Randinn wrote:
> >
> > > > > > I'm having a bit of trouble with Lift Json parcing, I know I'm
> not
> > > > > > doing it correctly but looking at the examples I cannot figure
> out
> > > > > > what, anyway, here is the code in question. If someone could
> point
> > > > > > me in the right direction that would be great, thanks in advance.
> >
> > > > > > class HelloWorld {
> > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > _root_.java.util.Date}
> > > > > > val http = new Http
> > > > > > val bos = new ByteArrayOutputStream
> > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > IDV60901.94868.json")
> > > > > > val rawdata = http(myRequest >>> bos)
> > > > > > val bs = bos.toString
> > > > > > val db = :/("www.bom.gov.au")
> >
> > > > > > val json = parse(bs)
> >
> > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > disclaimer_url: String)
> > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > String, name: String, state_time_zone: String,
> > > > > > time_zone: String, product_name: String,
> state:
> > > > > > String)
> > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> String,
> > > > > > local_da
[Lift] Re: Parcing Json
Thank you both for your explanations it seems assigning val
Observation to Observe is a bad idea, what should I do to get the
parced information to the Observation map?
On Jan 15, 8:42 am, Ross Mellgren wrote:
> Isn't it that the val Observation is being assigned to the (compiler
> synthesized) Observe singleton object? In either case, no save method.
>
> -Ross
>
> On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
>
>
>
> > On Thu, Jan 14, 2010 at 1:37 PM, Randinn wrote:
> > Well here is the latest iteration of the code:
>
> >http://paste.pocoo.org/show/165511/
>
> > but I'm getting this error
>
> > Compiling 11 source files to C:\Users\Randin\Documents\Development
> > \weather\target\classes at 1263504637934
> > [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
> > member of object HelloWorld.this.Observe
> > Observation.save
>
> > The Observation method is returning an instance of the Observe case class.
> > This class has no "save" method on it, thus the error.
>
> > ^
> > [ERROR]one error found
>
> > I went to 2.0-M1 and did a clean install. I assume save might be the
> > answer, how close am I?
>
> > On Jan 4, 1:00 am, Joni Freeman wrote:
> > > Google Groups does not shine in formatting code snippets. Here's nicer
> > > version:
>
> > >http://paste.pocoo.org/show/161578/
>
> > > Cheers Joni
>
> > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > Hi,
>
> > > > That's almost correct. I did following changes after looking into JSON
> > > > content.
>
> > > > 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > data: List[Data])
>
> > > > 2. There's optional data in JSON (some datapoints are nulls and Scala
> > > > Int or Double can't take null values). This can be fixed by extracting
> > > > into Option.
>
> > > > 3. The extracted Observation is in JSON field 'observations'.
> > > > Therefore:
> > > > (json \ "observations").extract[Observation]
>
> > > > Your error stack trace suggests that you have an old version of lift-
> > > > json. Please upgrade to M8, there was a critical bug in case class
> > > > extraction in older versions.
>
> > > > Full example which works for me:
>
> > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > case class Notice(copyright: String, copyright_url: String,
> > > > disclaimer_url: String)
> > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > product_name: String, state: String)
> > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > local_date_time: String,
> > > > local_date_time_full: String, air_temp: Option
> > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > [Double],
> > > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > > rain_trace: String)
>
> > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > data: List[Data])
>
> > > > (json \ "observations").extract[Observation]
>
> > > > Cheers Joni
>
> > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > > > > doing it correctly but looking at the examples I cannot figure out
> > > > > what, anyway, here is the code in question. If someone could point
> > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > class HelloWorld {
> > > > > def howdy = Welcome to hello-lift at {new
> > > > > _root_.java.util.Date}
> > > > > val http = new Http
> > > > > val bos = new ByteArrayOutputStream
> > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > IDV60901.94868.json")
> > > > > val rawdata = http(myRequest >>> bos)
> > > > > val bs = bos.toString
> > > > > val db = :/("www.bom.gov.au")
>
> > > > > val json = parse(bs)
>
> > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > disclaimer_url: String)
> > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > String, name: String, state_time_zone: String,
> > > > > time_zone: String, product_name: String, state:
> > > > > String)
> > > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > > local_date_time: String,
> > > > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > > > Double, apparent_t: Double,
> > > > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > > > wind_spd_kt: Double, gust_kt: Double,
> > > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > > Double)
>
Re: [Lift] Re: Parcing Json
Isn't it that the val Observation is being assigned to the (compiler
synthesized) Observe singleton object? In either case, no save method.
-Ross
On Jan 14, 2010, at 4:41 PM, David Pollak wrote:
>
>
> On Thu, Jan 14, 2010 at 1:37 PM, Randinn wrote:
> Well here is the latest iteration of the code:
>
> http://paste.pocoo.org/show/165511/
>
> but I'm getting this error
>
> Compiling 11 source files to C:\Users\Randin\Documents\Development
> \weather\target\classes at 1263504637934
> [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
> member of object HelloWorld.this.Observe
> Observation.save
>
> The Observation method is returning an instance of the Observe case class.
> This class has no "save" method on it, thus the error.
>
> ^
> [ERROR]one error found
>
> I went to 2.0-M1 and did a clean install. I assume save might be the
> answer, how close am I?
>
> On Jan 4, 1:00 am, Joni Freeman wrote:
> > Google Groups does not shine in formatting code snippets. Here's nicer
> > version:
> >
> > http://paste.pocoo.org/show/161578/
> >
> > Cheers Joni
> >
> > On 3 tammi, 12:20, Joni Freeman wrote:
> >
> > > Hi,
> >
> > > That's almost correct. I did following changes after looking into JSON
> > > content.
> >
> > > 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
> >
> > > 2. There's optional data in JSON (some datapoints are nulls and Scala
> > > Int or Double can't take null values). This can be fixed by extracting
> > > into Option.
> >
> > > 3. The extracted Observation is in JSON field 'observations'.
> > > Therefore:
> > > (json \ "observations").extract[Observation]
> >
> > > Your error stack trace suggests that you have an old version of lift-
> > > json. Please upgrade to M8, there was a critical bug in case class
> > > extraction in older versions.
> >
> > > Full example which works for me:
> >
> > > implicit val formats = net.liftweb.json.DefaultFormats
> > > case class Notice(copyright: String, copyright_url: String,
> > > disclaimer_url: String)
> > > case class Header(refresh_message: String, ID: String, main_ID:
> > > String, name: String, state_time_zone: String, time_zone: String,
> > > product_name: String, state: String)
> > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > local_date_time: String,
> > > local_date_time_full: String, air_temp: Option
> > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > rel_hum: Option[Int], delta_t: Option[Double],
> > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > [Double],
> > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > rain_trace: String)
> >
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
> >
> > > (json \ "observations").extract[Observation]
> >
> > > Cheers Joni
> >
> > > On 3 tammi, 09:17, Randinn wrote:
> >
> > > > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > > > doing it correctly but looking at the examples I cannot figure out
> > > > what, anyway, here is the code in question. If someone could point
> > > > me in the right direction that would be great, thanks in advance.
> >
> > > > class HelloWorld {
> > > > def howdy = Welcome to hello-lift at {new
> > > > _root_.java.util.Date}
> > > > val http = new Http
> > > > val bos = new ByteArrayOutputStream
> > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > IDV60901.94868.json")
> > > > val rawdata = http(myRequest >>> bos)
> > > > val bs = bos.toString
> > > > val db = :/("www.bom.gov.au")
> >
> > > > val json = parse(bs)
> >
> > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > case class Notice(copyright: String, copyright_url: String,
> > > > disclaimer_url: String)
> > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > String, name: String, state_time_zone: String,
> > > > time_zone: String, product_name: String, state:
> > > > String)
> > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > local_date_time: String,
> > > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > > Double, apparent_t: Double,
> > > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > > wind_spd_kt: Double, gust_kt: Double,
> > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > Double)
> > > > case class Observation(notice: Notice, header: Header, data: List
> > > > [Data])
> > > > json.extract[Observation]
> >
> >
>
> --
> You received this message because you are subscribed to the Google Groups
> "Lift" group.
> To post to this group, send email to lift...@googlegroups.com.
> To unsubscribe from this group, send email to
Re: [Lift] Re: Parcing Json
On Thu, Jan 14, 2010 at 1:37 PM, Randinn wrote:
> Well here is the latest iteration of the code:
>
> http://paste.pocoo.org/show/165511/
>
> but I'm getting this error
>
> Compiling 11 source files to C:\Users\Randin\Documents\Development
> \weather\target\classes at 1263504637934
> [ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
> member of object HelloWorld.this.Observe
> Observation.save
>
The Observation method is returning an instance of the Observe case class.
This class has no "save" method on it, thus the error.
> ^
> [ERROR]one error found
>
> I went to 2.0-M1 and did a clean install. I assume save might be the
> answer, how close am I?
>
> On Jan 4, 1:00 am, Joni Freeman wrote:
> > Google Groups does not shine in formatting code snippets. Here's nicer
> > version:
> >
> > http://paste.pocoo.org/show/161578/
> >
> > Cheers Joni
> >
> > On 3 tammi, 12:20, Joni Freeman wrote:
> >
> > > Hi,
> >
> > > That's almost correct. I did following changes after looking into JSON
> > > content.
> >
> > > 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
> >
> > > 2. There's optional data in JSON (some datapoints are nulls and Scala
> > > Int or Double can't take null values). This can be fixed by extracting
> > > into Option.
> >
> > > 3. The extracted Observation is in JSON field 'observations'.
> > > Therefore:
> > > (json \ "observations").extract[Observation]
> >
> > > Your error stack trace suggests that you have an old version of lift-
> > > json. Please upgrade to M8, there was a critical bug in case class
> > > extraction in older versions.
> >
> > > Full example which works for me:
> >
> > > implicit val formats = net.liftweb.json.DefaultFormats
> > > case class Notice(copyright: String, copyright_url: String,
> > > disclaimer_url: String)
> > > case class Header(refresh_message: String, ID: String, main_ID:
> > > String, name: String, state_time_zone: String, time_zone: String,
> > > product_name: String, state: String)
> > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > local_date_time: String,
> > > local_date_time_full: String, air_temp: Option
> > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > rel_hum: Option[Int], delta_t: Option[Double],
> > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > [Double],
> > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > rain_trace: String)
> >
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
> >
> > > (json \ "observations").extract[Observation]
> >
> > > Cheers Joni
> >
> > > On 3 tammi, 09:17, Randinn wrote:
> >
> > > > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > > > doing it correctly but looking at the examples I cannot figure out
> > > > what, anyway, here is the code in question. If someone could
> point
> > > > me in the right direction that would be great, thanks in advance.
> >
> > > > class HelloWorld {
> > > > def howdy = Welcome to hello-lift at {new
> > > > _root_.java.util.Date}
> > > > val http = new Http
> > > > val bos = new ByteArrayOutputStream
> > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > IDV60901.94868.json")
> > > > val rawdata = http(myRequest >>> bos)
> > > > val bs = bos.toString
> > > > val db = :/("www.bom.gov.au")
> >
> > > > val json = parse(bs)
> >
> > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > case class Notice(copyright: String, copyright_url: String,
> > > > disclaimer_url: String)
> > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > String, name: String, state_time_zone: String,
> > > > time_zone: String, product_name: String, state:
> > > > String)
> > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > local_date_time: String,
> > > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > > Double, apparent_t: Double,
> > > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > > wind_spd_kt: Double, gust_kt: Double,
> > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > Double)
> > > > case class Observation(notice: Notice, header: Header, data: List
> > > > [Data])
> > > > json.extract[Observation]
> >
> >
>
> --
> You received this message because you are subscribed to the Google Groups
> "Lift" group.
> To post to this group, send email to lift...@googlegroups.com.
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>
>
>
>
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scal
[Lift] Re: Parcing Json
Well here is the latest iteration of the code:
http://paste.pocoo.org/show/165511/
but I'm getting this error
Compiling 11 source files to C:\Users\Randin\Documents\Development
\weather\target\classes at 1263504637934
[ERROR]weather/snippet/HelloWorld.scala:32: error: value save is not a
member of object HelloWorld.this.Observe
Observation.save
^
[ERROR]one error found
I went to 2.0-M1 and did a clean install. I assume save might be the
answer, how close am I?
On Jan 4, 1:00 am, Joni Freeman wrote:
> Google Groups does not shine in formatting code snippets. Here's nicer
> version:
>
> http://paste.pocoo.org/show/161578/
>
> Cheers Joni
>
> On 3 tammi, 12:20, Joni Freeman wrote:
>
> > Hi,
>
> > That's almost correct. I did following changes after looking into JSON
> > content.
>
> > 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> > case class Observation(notice: List[Notice], header: List[Header],
> > data: List[Data])
>
> > 2. There's optional data in JSON (some datapoints are nulls and Scala
> > Int or Double can't take null values). This can be fixed by extracting
> > into Option.
>
> > 3. The extracted Observation is in JSON field 'observations'.
> > Therefore:
> > (json \ "observations").extract[Observation]
>
> > Your error stack trace suggests that you have an old version of lift-
> > json. Please upgrade to M8, there was a critical bug in case class
> > extraction in older versions.
>
> > Full example which works for me:
>
> > implicit val formats = net.liftweb.json.DefaultFormats
> > case class Notice(copyright: String, copyright_url: String,
> > disclaimer_url: String)
> > case class Header(refresh_message: String, ID: String, main_ID:
> > String, name: String, state_time_zone: String, time_zone: String,
> > product_name: String, state: String)
> > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > local_date_time: String,
> > local_date_time_full: String, air_temp: Option
> > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > rel_hum: Option[Int], delta_t: Option[Double],
> > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > [Double],
> > wind_spd_kmh: Option[Double], press: Option[Double],
> > rain_trace: String)
>
> > case class Observation(notice: List[Notice], header: List[Header],
> > data: List[Data])
>
> > (json \ "observations").extract[Observation]
>
> > Cheers Joni
>
> > On 3 tammi, 09:17, Randinn wrote:
>
> > > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > > doing it correctly but looking at the examples I cannot figure out
> > > what, anyway, here is the code in question. If someone could point
> > > me in the right direction that would be great, thanks in advance.
>
> > > class HelloWorld {
> > > def howdy = Welcome to hello-lift at {new
> > > _root_.java.util.Date}
> > > val http = new Http
> > > val bos = new ByteArrayOutputStream
> > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > IDV60901.94868.json")
> > > val rawdata = http(myRequest >>> bos)
> > > val bs = bos.toString
> > > val db = :/("www.bom.gov.au")
>
> > > val json = parse(bs)
>
> > > implicit val formats = net.liftweb.json.DefaultFormats
> > > case class Notice(copyright: String, copyright_url: String,
> > > disclaimer_url: String)
> > > case class Header(refresh_message: String, ID: String, main_ID:
> > > String, name: String, state_time_zone: String,
> > > time_zone: String, product_name: String, state:
> > > String)
> > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > local_date_time: String,
> > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > Double, apparent_t: Double,
> > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > wind_spd_kt: Double, gust_kt: Double,
> > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > Double)
> > > case class Observation(notice: Notice, header: Header, data: List
> > > [Data])
> > > json.extract[Observation]
>
>
--
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[Lift] Re: Parcing Json
I assume I use the save method but am stumbling on implementing it...
On Jan 11, 5:49 pm, Joni Freeman wrote:
> Hi,
>
> I'm sorry but I'm not totally sure what you are trying to accomplish.
> What would be the key in that map and what would be its values?
>
> Cheers Joni
>
> On 11 tammi, 03:14, Randinn wrote:
>
> > I should explain what we are planning, the idea is to get the json
> > file into a string, parse it and save the caught information into a
> > Observation map.
>
> > On Jan 11, 11:23 am, Randinn wrote:
>
> > > Forgive my ignorance but I was wondering why (json \
> > > "observations").extract[Observation], is it to save as a flat file?
>
> > > On Jan 4, 7:13 am, Randinn wrote:
>
> > > > I tried some of the changes you made but not all of them, and (json\
> > > > "observations").extract[Observation], I had no idea about that one.
> > > > Thank you very much for your help, it is appreciated.
>
> > > > On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > > > > Google Groups does not shine in formatting code snippets. Here's nicer
> > > > > version:
>
> > > > >http://paste.pocoo.org/show/161578/
>
> > > > > Cheers Joni
>
> > > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > > Hi,
>
> > > > > > That's almost correct. I did following changes after looking
> > > > > > intoJSON
> > > > > > content.
>
> > > > > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
> > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > data: List[Data])
>
> > > > > > 2. There's optional data inJSON(some datapoints are nulls and Scala
> > > > > > Int or Double can't take null values). This can be fixed by
> > > > > > extracting
> > > > > > into Option.
>
> > > > > > 3. The extracted Observation is inJSONfield 'observations'.
> > > > > > Therefore:
> > > > > > (json\ "observations").extract[Observation]
>
> > > > > > Your error stack trace suggests that you have an old version of
> > > > > > lift-
> > > > > >json. Please upgrade to M8, there was a critical bug in case class
> > > > > > extraction in older versions.
>
> > > > > > Full example which works for me:
>
> > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > disclaimer_url: String)
> > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > > product_name: String, state: String)
> > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > String,
> > > > > > local_date_time: String,
> > > > > > local_date_time_full: String, air_temp: Option
> > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > [Double],
> > > > > > wind_spd_kmh: Option[Double], press:
> > > > > > Option[Double],
> > > > > > rain_trace: String)
>
> > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > data: List[Data])
>
> > > > > > (json\ "observations").extract[Observation]
>
> > > > > > Cheers Joni
>
> > > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > > > > doing it correctly but looking at the examples I cannot figure out
> > > > > > > what, anyway, here is the code in question. If someone could
> > > > > > > point
> > > > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > > > class HelloWorld {
> > > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > > _root_.java.util.Date}
> > > > > > > val http = new Http
> > > > > > > val bos = new ByteArrayOutputStream
> > > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > > IDV60901.94868.json")
> > > > > > > val rawdata = http(myRequest >>> bos)
> > > > > > > val bs = bos.toString
> > > > > > > val db = :/("www.bom.gov.au")
>
> > > > > > > valjson= parse(bs)
>
> > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > disclaimer_url: String)
> > > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > > String, name: String, state_time_zone: String,
> > > > > > > time_zone: String, product_name: String,
> > > > > > > state:
> > > > > > > String)
> > > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > > String,
> > > > > > > local_date_time: String,
> > > > > > > local_date_time_full: Int, air_temp: Double,
> > > > > > > dewpt:
> > > > > > > Double, apparent_t: Double,
> > > > > > > rel_hum: Double, delta_t: Double, wind_dir:
>
Re: [Lift] Re: Parcing Json
Yeah i've been watching it for a while; not that there is anything wrong with mapper / jpa, but ScalaQuery appears to be a more functional design and the whole "its not an ORM" thing that is favoured by quite a number of people makes it very interesting indeed. Cheers, Tim On 11 Jan 2010, at 18:38, Joni Freeman wrote: > Tim, > > ScalaQuery is a great DSL to interface relational database and to > construct type safe SQL queries. I find that kind of approach often > preferable compared to full blown ORMs (like Hibernate etc.) since it > gives full control over SQL queries and does not impose any > constraints on object model. > > At the moment it is a bit difficult to use ScalaQuery with Lift since > latest versions of ScalaQuery requires Scala 2.8. But once Lift is > fully on 2.8 there should be no problems at all in using it in Lift > app. ScalaQuery is still work in progress and there hasn't been any > official release as far as I know, the documentation is also severely > lacking. > > Cheers Joni > > On 11 tammi, 13:32, Timothy Perrett wrote: >> Hey Joni, >> >> What did you think of ScalaQuery btw? Have you used it inside a lift app? >> >> Cheers, Tim >> >> On 11 Jan 2010, at 11:07, Joni Freeman wrote: >> >>> Ok, thanks for clarification. Unfortunately my knowledge about mapper >>> is very limited (I've previously used ScalaQuery for db persistence). >>> Maybe someone else can answer the question better, the question being: >>> What is the easiest way to store instances of Observations into >>> database using mapper. >> >>> case class Observation(notice: List[Notice], header: List[Header], >>> data: List[Data]) >> >>> Notice, Header and Data are simple case classes having just primitive >>> fields. >> >>> Cheers Joni >> >>> On 11 tammi, 10:36, Randinn wrote: Sorry for the confusion Observation is a table actually, I meant to write mapper. So what we're doing is calling up thejsonfile, making it a string, putting it through the parcer and inserting it into the table. >> On Jan 11, 5:49 pm, Joni Freeman wrote: >> > Hi, >> > I'm sorry but I'm not totally sure what you are trying to accomplish. > What would be the key in that map and what would be its values? >> > Cheers Joni >> > On 11 tammi, 03:14, Randinn wrote: >> >> I should explain what we are planning, the idea is to get thejson >> file into a string, parse it and save the caught information into a >> Observation map. >> >> On Jan 11, 11:23 am, Randinn wrote: >> >>> Forgive my ignorance but I was wondering why (json\ >>> "observations").extract[Observation], is it to save as a flat file? >> >>> On Jan 4, 7:13 am, Randinn wrote: >> I tried some of the changes you made but not all of them, and (json\ "observations").extract[Observation], I had no idea about that one. Thank you very much for your help, it is appreciated. >> On Jan 4, 1:00 am, Joni Freeman wrote: >> > Google Groups does not shine in formatting code snippets. Here's nicer > version: >> > http://paste.pocoo.org/show/161578/ >> > Cheers Joni >> > On 3 tammi, 12:20, Joni Freeman wrote: >> >> Hi, >> >> That's almost correct. I did following changes after looking intoJSON >> content. >> >> 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore: >> case class Observation(notice: List[Notice], header: List[Header], >> data: List[Data]) >> >> 2. There's optional data inJSON(some datapoints are nulls and Scala >> Int or Double can't take null values). This can be fixed by >> extracting >> into Option. >> >> 3. The extracted Observation is inJSONfield 'observations'. >> Therefore: >> (json\ "observations").extract[Observation] >> >> Your error stack trace suggests that you have an old version of lift- >> json. Please upgrade to M8, there was a critical bug in case class >> extraction in older versions. >> >> Full example which works for me: >> >> implicit val formats = net.liftweb.json.DefaultFormats >> case class Notice(copyright: String, copyright_url: String, >> disclaimer_url: String) >> case class Header(refresh_message: String, ID: String, main_ID: >> String, name: String, state_time_zone: String, time_zone: String, >> product_name: String, state: String) >> case class Data(sort_order: Int, wmo: Int, history_product: String, >> local_date_time: String, >> local_date_time_full: String, air_temp: Option >> [Double], dewpt: Option[Double], apparent_t: Option[Double], >> rel_hum: Option[Int], delta_t: Option[Double], >> wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option >> [Double], >>
[Lift] Re: Parcing Json
Tim, ScalaQuery is a great DSL to interface relational database and to construct type safe SQL queries. I find that kind of approach often preferable compared to full blown ORMs (like Hibernate etc.) since it gives full control over SQL queries and does not impose any constraints on object model. At the moment it is a bit difficult to use ScalaQuery with Lift since latest versions of ScalaQuery requires Scala 2.8. But once Lift is fully on 2.8 there should be no problems at all in using it in Lift app. ScalaQuery is still work in progress and there hasn't been any official release as far as I know, the documentation is also severely lacking. Cheers Joni On 11 tammi, 13:32, Timothy Perrett wrote: > Hey Joni, > > What did you think of ScalaQuery btw? Have you used it inside a lift app? > > Cheers, Tim > > On 11 Jan 2010, at 11:07, Joni Freeman wrote: > > > Ok, thanks for clarification. Unfortunately my knowledge about mapper > > is very limited (I've previously used ScalaQuery for db persistence). > > Maybe someone else can answer the question better, the question being: > > What is the easiest way to store instances of Observations into > > database using mapper. > > > case class Observation(notice: List[Notice], header: List[Header], > > data: List[Data]) > > > Notice, Header and Data are simple case classes having just primitive > > fields. > > > Cheers Joni > > > On 11 tammi, 10:36, Randinn wrote: > >> Sorry for the confusion Observation is a table actually, I meant to > >> write mapper. So what we're doing is calling up thejsonfile, making > >> it a string, putting it through the parcer and inserting it into the > >> table. > > >> On Jan 11, 5:49 pm, Joni Freeman wrote: > > >>> Hi, > > >>> I'm sorry but I'm not totally sure what you are trying to accomplish. > >>> What would be the key in that map and what would be its values? > > >>> Cheers Joni > > >>> On 11 tammi, 03:14, Randinn wrote: > > I should explain what we are planning, the idea is to get thejson > file into a string, parse it and save the caught information into a > Observation map. > > On Jan 11, 11:23 am, Randinn wrote: > > > Forgive my ignorance but I was wondering why (json\ > > "observations").extract[Observation], is it to save as a flat file? > > > On Jan 4, 7:13 am, Randinn wrote: > > >> I tried some of the changes you made but not all of them, and (json\ > >> "observations").extract[Observation], I had no idea about that one. > >> Thank you very much for your help, it is appreciated. > > >> On Jan 4, 1:00 am, Joni Freeman wrote: > > >>> Google Groups does not shine in formatting code snippets. Here's nicer > >>> version: > > >>>http://paste.pocoo.org/show/161578/ > > >>> Cheers Joni > > >>> On 3 tammi, 12:20, Joni Freeman wrote: > > Hi, > > That's almost correct. I did following changes after looking intoJSON > content. > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore: > case class Observation(notice: List[Notice], header: List[Header], > data: List[Data]) > > 2. There's optional data inJSON(some datapoints are nulls and Scala > Int or Double can't take null values). This can be fixed by > extracting > into Option. > > 3. The extracted Observation is inJSONfield 'observations'. > Therefore: > (json\ "observations").extract[Observation] > > Your error stack trace suggests that you have an old version of lift- > json. Please upgrade to M8, there was a critical bug in case class > extraction in older versions. > > Full example which works for me: > > implicit val formats = net.liftweb.json.DefaultFormats > case class Notice(copyright: String, copyright_url: String, > disclaimer_url: String) > case class Header(refresh_message: String, ID: String, main_ID: > String, name: String, state_time_zone: String, time_zone: String, > product_name: String, state: String) > case class Data(sort_order: Int, wmo: Int, history_product: String, > local_date_time: String, > local_date_time_full: String, air_temp: Option > [Double], dewpt: Option[Double], apparent_t: Option[Double], > rel_hum: Option[Int], delta_t: Option[Double], > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option > [Double], > wind_spd_kmh: Option[Double], press: > Option[Double], > rain_trace: String) > > case class Observation(notice: List[Notice], header: List[Header], > data: List[Data]) > > (json\ "observations").extract[Observation] > > Cheers Joni > > On 3 tammi, 09:17, Randinn wrote: > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
Re: [Lift] Re: Parcing Json
Hey Joni,
What did you think of ScalaQuery btw? Have you used it inside a lift app?
Cheers, Tim
On 11 Jan 2010, at 11:07, Joni Freeman wrote:
> Ok, thanks for clarification. Unfortunately my knowledge about mapper
> is very limited (I've previously used ScalaQuery for db persistence).
> Maybe someone else can answer the question better, the question being:
> What is the easiest way to store instances of Observations into
> database using mapper.
>
> case class Observation(notice: List[Notice], header: List[Header],
> data: List[Data])
>
> Notice, Header and Data are simple case classes having just primitive
> fields.
>
> Cheers Joni
>
> On 11 tammi, 10:36, Randinn wrote:
>> Sorry for the confusion Observation is a table actually, I meant to
>> write mapper. So what we're doing is calling up the json file, making
>> it a string, putting it through the parcer and inserting it into the
>> table.
>>
>> On Jan 11, 5:49 pm, Joni Freeman wrote:
>>
>>> Hi,
>>
>>> I'm sorry but I'm not totally sure what you are trying to accomplish.
>>> What would be the key in that map and what would be its values?
>>
>>> Cheers Joni
>>
>>> On 11 tammi, 03:14, Randinn wrote:
>>
I should explain what we are planning, the idea is to get the json
file into a string, parse it and save the caught information into a
Observation map.
>>
On Jan 11, 11:23 am, Randinn wrote:
>>
> Forgive my ignorance but I was wondering why (json \
> "observations").extract[Observation], is it to save as a flat file?
>>
> On Jan 4, 7:13 am, Randinn wrote:
>>
>> I tried some of the changes you made but not all of them, and (json\
>> "observations").extract[Observation], I had no idea about that one.
>> Thank you very much for your help, it is appreciated.
>>
>> On Jan 4, 1:00 am, Joni Freeman wrote:
>>
>>> Google Groups does not shine in formatting code snippets. Here's nicer
>>> version:
>>
>>> http://paste.pocoo.org/show/161578/
>>
>>> Cheers Joni
>>
>>> On 3 tammi, 12:20, Joni Freeman wrote:
>>
Hi,
>>
That's almost correct. I did following changes after looking intoJSON
content.
>>
1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
case class Observation(notice: List[Notice], header: List[Header],
data: List[Data])
>>
2. There's optional data inJSON(some datapoints are nulls and Scala
Int or Double can't take null values). This can be fixed by extracting
into Option.
>>
3. The extracted Observation is inJSONfield 'observations'.
Therefore:
(json\ "observations").extract[Observation]
>>
Your error stack trace suggests that you have an old version of lift-
json. Please upgrade to M8, there was a critical bug in case class
extraction in older versions.
>>
Full example which works for me:
>>
implicit val formats = net.liftweb.json.DefaultFormats
case class Notice(copyright: String, copyright_url: String,
disclaimer_url: String)
case class Header(refresh_message: String, ID: String, main_ID:
String, name: String, state_time_zone: String, time_zone: String,
product_name: String, state: String)
case class Data(sort_order: Int, wmo: Int, history_product: String,
local_date_time: String,
local_date_time_full: String, air_temp: Option
[Double], dewpt: Option[Double], apparent_t: Option[Double],
rel_hum: Option[Int], delta_t: Option[Double],
wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
[Double],
wind_spd_kmh: Option[Double], press: Option[Double],
rain_trace: String)
>>
case class Observation(notice: List[Notice], header: List[Header],
data: List[Data])
>>
(json\ "observations").extract[Observation]
>>
Cheers Joni
>>
On 3 tammi, 09:17, Randinn wrote:
>>
> I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> doing it correctly but looking at the examples I cannot figure out
> what, anyway, here is the code in question. If someone could point
> me in the right direction that would be great, thanks in advance.
>>
> class HelloWorld {
> def howdy = Welcome to hello-lift at {new
> _root_.java.util.Date}
> val http = new Http
> val bos = new ByteArrayOutputStream
> val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> IDV60901.94868.json")
> val rawdata = http(myRequest >>> bos)
> val bs = bos.toString
> val db = :/("www.bom.gov.au")
>>
> valjson= parse(bs)
>>
> implicit val formats = net.liftweb.json.DefaultFormats
> case class Notice(copyright: String, copyright_url: Strin
[Lift] Re: Parcing Json
Ok, thanks for clarification. Unfortunately my knowledge about mapper
is very limited (I've previously used ScalaQuery for db persistence).
Maybe someone else can answer the question better, the question being:
What is the easiest way to store instances of Observations into
database using mapper.
case class Observation(notice: List[Notice], header: List[Header],
data: List[Data])
Notice, Header and Data are simple case classes having just primitive
fields.
Cheers Joni
On 11 tammi, 10:36, Randinn wrote:
> Sorry for the confusion Observation is a table actually, I meant to
> write mapper. So what we're doing is calling up the json file, making
> it a string, putting it through the parcer and inserting it into the
> table.
>
> On Jan 11, 5:49 pm, Joni Freeman wrote:
>
> > Hi,
>
> > I'm sorry but I'm not totally sure what you are trying to accomplish.
> > What would be the key in that map and what would be its values?
>
> > Cheers Joni
>
> > On 11 tammi, 03:14, Randinn wrote:
>
> > > I should explain what we are planning, the idea is to get the json
> > > file into a string, parse it and save the caught information into a
> > > Observation map.
>
> > > On Jan 11, 11:23 am, Randinn wrote:
>
> > > > Forgive my ignorance but I was wondering why (json \
> > > > "observations").extract[Observation], is it to save as a flat file?
>
> > > > On Jan 4, 7:13 am, Randinn wrote:
>
> > > > > I tried some of the changes you made but not all of them, and (json\
> > > > > "observations").extract[Observation], I had no idea about that one.
> > > > > Thank you very much for your help, it is appreciated.
>
> > > > > On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > > > > > Google Groups does not shine in formatting code snippets. Here's
> > > > > > nicer
> > > > > > version:
>
> > > > > >http://paste.pocoo.org/show/161578/
>
> > > > > > Cheers Joni
>
> > > > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > > > Hi,
>
> > > > > > > That's almost correct. I did following changes after looking
> > > > > > > intoJSON
> > > > > > > content.
>
> > > > > > > 1. 'notice' and 'header' areJSONarrays just like 'data'.
> > > > > > > Therefore:
> > > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > > data: List[Data])
>
> > > > > > > 2. There's optional data inJSON(some datapoints are nulls and
> > > > > > > Scala
> > > > > > > Int or Double can't take null values). This can be fixed by
> > > > > > > extracting
> > > > > > > into Option.
>
> > > > > > > 3. The extracted Observation is inJSONfield 'observations'.
> > > > > > > Therefore:
> > > > > > > (json\ "observations").extract[Observation]
>
> > > > > > > Your error stack trace suggests that you have an old version of
> > > > > > > lift-
> > > > > > >json. Please upgrade to M8, there was a critical bug in case class
> > > > > > > extraction in older versions.
>
> > > > > > > Full example which works for me:
>
> > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > disclaimer_url: String)
> > > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > > > product_name: String, state: String)
> > > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > > String,
> > > > > > > local_date_time: String,
> > > > > > > local_date_time_full: String, air_temp: Option
> > > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > > [Double],
> > > > > > > wind_spd_kmh: Option[Double], press:
> > > > > > > Option[Double],
> > > > > > > rain_trace: String)
>
> > > > > > > case class Observation(notice: List[Notice], header:
> > > > > > > List[Header],
> > > > > > > data: List[Data])
>
> > > > > > > (json\ "observations").extract[Observation]
>
> > > > > > > Cheers Joni
>
> > > > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > > > > > doing it correctly but looking at the examples I cannot figure
> > > > > > > > out
> > > > > > > > what, anyway, here is the code in question. If someone
> > > > > > > > could point
> > > > > > > > me in the right direction that would be great, thanks in
> > > > > > > > advance.
>
> > > > > > > > class HelloWorld {
> > > > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > > > _root_.java.util.Date}
> > > > > > > > val http = new Http
> > > > > > > > val bos = new ByteArrayOutputStream
> > > > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > > > IDV60901.94868.json")
> > > > > > > > val rawdata = http(myRequest >>> bos)
> > >
[Lift] Re: Parcing Json
Sorry for the confusion Observation is a table actually, I meant to
write mapper. So what we're doing is calling up the json file, making
it a string, putting it through the parcer and inserting it into the
table.
On Jan 11, 5:49 pm, Joni Freeman wrote:
> Hi,
>
> I'm sorry but I'm not totally sure what you are trying to accomplish.
> What would be the key in that map and what would be its values?
>
> Cheers Joni
>
> On 11 tammi, 03:14, Randinn wrote:
>
> > I should explain what we are planning, the idea is to get the json
> > file into a string, parse it and save the caught information into a
> > Observation map.
>
> > On Jan 11, 11:23 am, Randinn wrote:
>
> > > Forgive my ignorance but I was wondering why (json \
> > > "observations").extract[Observation], is it to save as a flat file?
>
> > > On Jan 4, 7:13 am, Randinn wrote:
>
> > > > I tried some of the changes you made but not all of them, and (json\
> > > > "observations").extract[Observation], I had no idea about that one.
> > > > Thank you very much for your help, it is appreciated.
>
> > > > On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > > > > Google Groups does not shine in formatting code snippets. Here's nicer
> > > > > version:
>
> > > > >http://paste.pocoo.org/show/161578/
>
> > > > > Cheers Joni
>
> > > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > > Hi,
>
> > > > > > That's almost correct. I did following changes after looking
> > > > > > intoJSON
> > > > > > content.
>
> > > > > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
> > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > data: List[Data])
>
> > > > > > 2. There's optional data inJSON(some datapoints are nulls and Scala
> > > > > > Int or Double can't take null values). This can be fixed by
> > > > > > extracting
> > > > > > into Option.
>
> > > > > > 3. The extracted Observation is inJSONfield 'observations'.
> > > > > > Therefore:
> > > > > > (json\ "observations").extract[Observation]
>
> > > > > > Your error stack trace suggests that you have an old version of
> > > > > > lift-
> > > > > >json. Please upgrade to M8, there was a critical bug in case class
> > > > > > extraction in older versions.
>
> > > > > > Full example which works for me:
>
> > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > disclaimer_url: String)
> > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > > product_name: String, state: String)
> > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > String,
> > > > > > local_date_time: String,
> > > > > > local_date_time_full: String, air_temp: Option
> > > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > > [Double],
> > > > > > wind_spd_kmh: Option[Double], press:
> > > > > > Option[Double],
> > > > > > rain_trace: String)
>
> > > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > > data: List[Data])
>
> > > > > > (json\ "observations").extract[Observation]
>
> > > > > > Cheers Joni
>
> > > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > > > > doing it correctly but looking at the examples I cannot figure out
> > > > > > > what, anyway, here is the code in question. If someone could
> > > > > > > point
> > > > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > > > class HelloWorld {
> > > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > > _root_.java.util.Date}
> > > > > > > val http = new Http
> > > > > > > val bos = new ByteArrayOutputStream
> > > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > > IDV60901.94868.json")
> > > > > > > val rawdata = http(myRequest >>> bos)
> > > > > > > val bs = bos.toString
> > > > > > > val db = :/("www.bom.gov.au")
>
> > > > > > > valjson= parse(bs)
>
> > > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > > disclaimer_url: String)
> > > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > > String, name: String, state_time_zone: String,
> > > > > > > time_zone: String, product_name: String,
> > > > > > > state:
> > > > > > > String)
> > > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > > String,
> > > > > > > local_date_time: String,
> > > > > > > local_date_time_full: Int, air_temp: Double,
[Lift] Re: Parcing Json
Hi,
I'm sorry but I'm not totally sure what you are trying to accomplish.
What would be the key in that map and what would be its values?
Cheers Joni
On 11 tammi, 03:14, Randinn wrote:
> I should explain what we are planning, the idea is to get the json
> file into a string, parse it and save the caught information into a
> Observation map.
>
> On Jan 11, 11:23 am, Randinn wrote:
>
> > Forgive my ignorance but I was wondering why (json \
> > "observations").extract[Observation], is it to save as a flat file?
>
> > On Jan 4, 7:13 am, Randinn wrote:
>
> > > I tried some of the changes you made but not all of them, and (json\
> > > "observations").extract[Observation], I had no idea about that one.
> > > Thank you very much for your help, it is appreciated.
>
> > > On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > > > Google Groups does not shine in formatting code snippets. Here's nicer
> > > > version:
>
> > > >http://paste.pocoo.org/show/161578/
>
> > > > Cheers Joni
>
> > > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > > Hi,
>
> > > > > That's almost correct. I did following changes after looking intoJSON
> > > > > content.
>
> > > > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
> > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > data: List[Data])
>
> > > > > 2. There's optional data inJSON(some datapoints are nulls and Scala
> > > > > Int or Double can't take null values). This can be fixed by extracting
> > > > > into Option.
>
> > > > > 3. The extracted Observation is inJSONfield 'observations'.
> > > > > Therefore:
> > > > > (json\ "observations").extract[Observation]
>
> > > > > Your error stack trace suggests that you have an old version of lift-
> > > > >json. Please upgrade to M8, there was a critical bug in case class
> > > > > extraction in older versions.
>
> > > > > Full example which works for me:
>
> > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > disclaimer_url: String)
> > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > > product_name: String, state: String)
> > > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > > local_date_time: String,
> > > > > local_date_time_full: String, air_temp: Option
> > > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > > [Double],
> > > > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > > > rain_trace: String)
>
> > > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > > data: List[Data])
>
> > > > > (json\ "observations").extract[Observation]
>
> > > > > Cheers Joni
>
> > > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > > > doing it correctly but looking at the examples I cannot figure out
> > > > > > what, anyway, here is the code in question. If someone could
> > > > > > point
> > > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > > class HelloWorld {
> > > > > > def howdy = Welcome to hello-lift at {new
> > > > > > _root_.java.util.Date}
> > > > > > val http = new Http
> > > > > > val bos = new ByteArrayOutputStream
> > > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > > IDV60901.94868.json")
> > > > > > val rawdata = http(myRequest >>> bos)
> > > > > > val bs = bos.toString
> > > > > > val db = :/("www.bom.gov.au")
>
> > > > > > valjson= parse(bs)
>
> > > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > > disclaimer_url: String)
> > > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > > String, name: String, state_time_zone: String,
> > > > > > time_zone: String, product_name: String, state:
> > > > > > String)
> > > > > > case class Data(sort_order: Int, wmo: Int, history_product:
> > > > > > String,
> > > > > > local_date_time: String,
> > > > > > local_date_time_full: Int, air_temp: Double,
> > > > > > dewpt:
> > > > > > Double, apparent_t: Double,
> > > > > > rel_hum: Double, delta_t: Double, wind_dir:
> > > > > > Double,
> > > > > > wind_spd_kt: Double, gust_kt: Double,
> > > > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > > > Double)
> > > > > > case class Observation(notice: Notice, header: Header, data: List
> > > > > > [Data])
> > > > > >json.extract[Observation]
--
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[Lift] Re: Parcing Json
I should explain what we are planning, the idea is to get the json
file into a string, parse it and save the caught information into a
Observation map.
On Jan 11, 11:23 am, Randinn wrote:
> Forgive my ignorance but I was wondering why (json \
> "observations").extract[Observation], is it to save as a flat file?
>
> On Jan 4, 7:13 am, Randinn wrote:
>
> > I tried some of the changes you made but not all of them, and (json\
> > "observations").extract[Observation], I had no idea about that one.
> > Thank you very much for your help, it is appreciated.
>
> > On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > > Google Groups does not shine in formatting code snippets. Here's nicer
> > > version:
>
> > >http://paste.pocoo.org/show/161578/
>
> > > Cheers Joni
>
> > > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > > Hi,
>
> > > > That's almost correct. I did following changes after looking intoJSON
> > > > content.
>
> > > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
> > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > data: List[Data])
>
> > > > 2. There's optional data inJSON(some datapoints are nulls and Scala
> > > > Int or Double can't take null values). This can be fixed by extracting
> > > > into Option.
>
> > > > 3. The extracted Observation is inJSONfield 'observations'.
> > > > Therefore:
> > > > (json\ "observations").extract[Observation]
>
> > > > Your error stack trace suggests that you have an old version of lift-
> > > >json. Please upgrade to M8, there was a critical bug in case class
> > > > extraction in older versions.
>
> > > > Full example which works for me:
>
> > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > case class Notice(copyright: String, copyright_url: String,
> > > > disclaimer_url: String)
> > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > String, name: String, state_time_zone: String, time_zone: String,
> > > > product_name: String, state: String)
> > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > local_date_time: String,
> > > > local_date_time_full: String, air_temp: Option
> > > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > > rel_hum: Option[Int], delta_t: Option[Double],
> > > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > > [Double],
> > > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > > rain_trace: String)
>
> > > > case class Observation(notice: List[Notice], header: List[Header],
> > > > data: List[Data])
>
> > > > (json\ "observations").extract[Observation]
>
> > > > Cheers Joni
>
> > > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > > doing it correctly but looking at the examples I cannot figure out
> > > > > what, anyway, here is the code in question. If someone could point
> > > > > me in the right direction that would be great, thanks in advance.
>
> > > > > class HelloWorld {
> > > > > def howdy = Welcome to hello-lift at {new
> > > > > _root_.java.util.Date}
> > > > > val http = new Http
> > > > > val bos = new ByteArrayOutputStream
> > > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > > IDV60901.94868.json")
> > > > > val rawdata = http(myRequest >>> bos)
> > > > > val bs = bos.toString
> > > > > val db = :/("www.bom.gov.au")
>
> > > > > valjson= parse(bs)
>
> > > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > > case class Notice(copyright: String, copyright_url: String,
> > > > > disclaimer_url: String)
> > > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > > String, name: String, state_time_zone: String,
> > > > > time_zone: String, product_name: String, state:
> > > > > String)
> > > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > > local_date_time: String,
> > > > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > > > Double, apparent_t: Double,
> > > > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > > > wind_spd_kt: Double, gust_kt: Double,
> > > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > > Double)
> > > > > case class Observation(notice: Notice, header: Header, data: List
> > > > > [Data])
> > > > >json.extract[Observation]
>
>
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[Lift] Re: Parcing Json
Forgive my ignorance but I was wondering why (json \
"observations").extract[Observation], is it to save as a flat file?
On Jan 4, 7:13 am, Randinn wrote:
> I tried some of the changes you made but not all of them, and (json\
> "observations").extract[Observation], I had no idea about that one.
> Thank you very much for your help, it is appreciated.
>
> On Jan 4, 1:00 am, Joni Freeman wrote:
>
> > Google Groups does not shine in formatting code snippets. Here's nicer
> > version:
>
> >http://paste.pocoo.org/show/161578/
>
> > Cheers Joni
>
> > On 3 tammi, 12:20, Joni Freeman wrote:
>
> > > Hi,
>
> > > That's almost correct. I did following changes after looking intoJSON
> > > content.
>
> > > 1. 'notice' and 'header' areJSONarrays just like 'data'. Therefore:
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
>
> > > 2. There's optional data inJSON(some datapoints are nulls and Scala
> > > Int or Double can't take null values). This can be fixed by extracting
> > > into Option.
>
> > > 3. The extracted Observation is inJSONfield 'observations'.
> > > Therefore:
> > > (json\ "observations").extract[Observation]
>
> > > Your error stack trace suggests that you have an old version of lift-
> > >json. Please upgrade to M8, there was a critical bug in case class
> > > extraction in older versions.
>
> > > Full example which works for me:
>
> > > implicit val formats = net.liftweb.json.DefaultFormats
> > > case class Notice(copyright: String, copyright_url: String,
> > > disclaimer_url: String)
> > > case class Header(refresh_message: String, ID: String, main_ID:
> > > String, name: String, state_time_zone: String, time_zone: String,
> > > product_name: String, state: String)
> > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > local_date_time: String,
> > > local_date_time_full: String, air_temp: Option
> > > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > > rel_hum: Option[Int], delta_t: Option[Double],
> > > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > > [Double],
> > > wind_spd_kmh: Option[Double], press: Option[Double],
> > > rain_trace: String)
>
> > > case class Observation(notice: List[Notice], header: List[Header],
> > > data: List[Data])
>
> > > (json\ "observations").extract[Observation]
>
> > > Cheers Joni
>
> > > On 3 tammi, 09:17, Randinn wrote:
>
> > > > I'm having a bit of trouble with LiftJsonparcing, I know I'm not
> > > > doing it correctly but looking at the examples I cannot figure out
> > > > what, anyway, here is the code in question. If someone could point
> > > > me in the right direction that would be great, thanks in advance.
>
> > > > class HelloWorld {
> > > > def howdy = Welcome to hello-lift at {new
> > > > _root_.java.util.Date}
> > > > val http = new Http
> > > > val bos = new ByteArrayOutputStream
> > > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > > IDV60901.94868.json")
> > > > val rawdata = http(myRequest >>> bos)
> > > > val bs = bos.toString
> > > > val db = :/("www.bom.gov.au")
>
> > > > valjson= parse(bs)
>
> > > > implicit val formats = net.liftweb.json.DefaultFormats
> > > > case class Notice(copyright: String, copyright_url: String,
> > > > disclaimer_url: String)
> > > > case class Header(refresh_message: String, ID: String, main_ID:
> > > > String, name: String, state_time_zone: String,
> > > > time_zone: String, product_name: String, state:
> > > > String)
> > > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > > local_date_time: String,
> > > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > > Double, apparent_t: Double,
> > > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > > wind_spd_kt: Double, gust_kt: Double,
> > > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > > Double)
> > > > case class Observation(notice: Notice, header: Header, data: List
> > > > [Data])
> > > >json.extract[Observation]
>
>
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[Lift] Re: Parcing Json
I tried some of the changes you made but not all of them, and (json \
"observations").extract[Observation], I had no idea about that one.
Thank you very much for your help, it is appreciated.
On Jan 4, 1:00 am, Joni Freeman wrote:
> Google Groups does not shine in formatting code snippets. Here's nicer
> version:
>
> http://paste.pocoo.org/show/161578/
>
> Cheers Joni
>
> On 3 tammi, 12:20, Joni Freeman wrote:
>
> > Hi,
>
> > That's almost correct. I did following changes after looking into JSON
> > content.
>
> > 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> > case class Observation(notice: List[Notice], header: List[Header],
> > data: List[Data])
>
> > 2. There's optional data in JSON (some datapoints are nulls and Scala
> > Int or Double can't take null values). This can be fixed by extracting
> > into Option.
>
> > 3. The extracted Observation is in JSON field 'observations'.
> > Therefore:
> > (json \ "observations").extract[Observation]
>
> > Your error stack trace suggests that you have an old version of lift-
> > json. Please upgrade to M8, there was a critical bug in case class
> > extraction in older versions.
>
> > Full example which works for me:
>
> > implicit val formats = net.liftweb.json.DefaultFormats
> > case class Notice(copyright: String, copyright_url: String,
> > disclaimer_url: String)
> > case class Header(refresh_message: String, ID: String, main_ID:
> > String, name: String, state_time_zone: String, time_zone: String,
> > product_name: String, state: String)
> > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > local_date_time: String,
> > local_date_time_full: String, air_temp: Option
> > [Double], dewpt: Option[Double], apparent_t: Option[Double],
> > rel_hum: Option[Int], delta_t: Option[Double],
> > wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> > [Double],
> > wind_spd_kmh: Option[Double], press: Option[Double],
> > rain_trace: String)
>
> > case class Observation(notice: List[Notice], header: List[Header],
> > data: List[Data])
>
> > (json \ "observations").extract[Observation]
>
> > Cheers Joni
>
> > On 3 tammi, 09:17, Randinn wrote:
>
> > > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > > doing it correctly but looking at the examples I cannot figure out
> > > what, anyway, here is the code in question. If someone could point
> > > me in the right direction that would be great, thanks in advance.
>
> > > class HelloWorld {
> > > def howdy = Welcome to hello-lift at {new
> > > _root_.java.util.Date}
> > > val http = new Http
> > > val bos = new ByteArrayOutputStream
> > > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > > IDV60901.94868.json")
> > > val rawdata = http(myRequest >>> bos)
> > > val bs = bos.toString
> > > val db = :/("www.bom.gov.au")
>
> > > val json = parse(bs)
>
> > > implicit val formats = net.liftweb.json.DefaultFormats
> > > case class Notice(copyright: String, copyright_url: String,
> > > disclaimer_url: String)
> > > case class Header(refresh_message: String, ID: String, main_ID:
> > > String, name: String, state_time_zone: String,
> > > time_zone: String, product_name: String, state:
> > > String)
> > > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > > local_date_time: String,
> > > local_date_time_full: Int, air_temp: Double, dewpt:
> > > Double, apparent_t: Double,
> > > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > > wind_spd_kt: Double, gust_kt: Double,
> > > wind_spd_kmh: Double, press: Double, rain_trace:
> > > Double)
> > > case class Observation(notice: Notice, header: Header, data: List
> > > [Data])
> > > json.extract[Observation]
>
>
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[Lift] Re: Parcing Json
Google Groups does not shine in formatting code snippets. Here's nicer
version:
http://paste.pocoo.org/show/161578/
Cheers Joni
On 3 tammi, 12:20, Joni Freeman wrote:
> Hi,
>
> That's almost correct. I did following changes after looking into JSON
> content.
>
> 1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
> case class Observation(notice: List[Notice], header: List[Header],
> data: List[Data])
>
> 2. There's optional data in JSON (some datapoints are nulls and Scala
> Int or Double can't take null values). This can be fixed by extracting
> into Option.
>
> 3. The extracted Observation is in JSON field 'observations'.
> Therefore:
> (json \ "observations").extract[Observation]
>
> Your error stack trace suggests that you have an old version of lift-
> json. Please upgrade to M8, there was a critical bug in case class
> extraction in older versions.
>
> Full example which works for me:
>
> implicit val formats = net.liftweb.json.DefaultFormats
> case class Notice(copyright: String, copyright_url: String,
> disclaimer_url: String)
> case class Header(refresh_message: String, ID: String, main_ID:
> String, name: String, state_time_zone: String, time_zone: String,
> product_name: String, state: String)
> case class Data(sort_order: Int, wmo: Int, history_product: String,
> local_date_time: String,
> local_date_time_full: String, air_temp: Option
> [Double], dewpt: Option[Double], apparent_t: Option[Double],
> rel_hum: Option[Int], delta_t: Option[Double],
> wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
> [Double],
> wind_spd_kmh: Option[Double], press: Option[Double],
> rain_trace: String)
>
> case class Observation(notice: List[Notice], header: List[Header],
> data: List[Data])
>
> (json \ "observations").extract[Observation]
>
> Cheers Joni
>
> On 3 tammi, 09:17, Randinn wrote:
>
> > I'm having a bit of trouble with Lift Json parcing, I know I'm not
> > doing it correctly but looking at the examples I cannot figure out
> > what, anyway, here is the code in question. If someone could point
> > me in the right direction that would be great, thanks in advance.
>
> > class HelloWorld {
> > def howdy = Welcome to hello-lift at {new
> > _root_.java.util.Date}
> > val http = new Http
> > val bos = new ByteArrayOutputStream
> > val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> > IDV60901.94868.json")
> > val rawdata = http(myRequest >>> bos)
> > val bs = bos.toString
> > val db = :/("www.bom.gov.au")
>
> > val json = parse(bs)
>
> > implicit val formats = net.liftweb.json.DefaultFormats
> > case class Notice(copyright: String, copyright_url: String,
> > disclaimer_url: String)
> > case class Header(refresh_message: String, ID: String, main_ID:
> > String, name: String, state_time_zone: String,
> > time_zone: String, product_name: String, state:
> > String)
> > case class Data(sort_order: Int, wmo: Int, history_product: String,
> > local_date_time: String,
> > local_date_time_full: Int, air_temp: Double, dewpt:
> > Double, apparent_t: Double,
> > rel_hum: Double, delta_t: Double, wind_dir: Double,
> > wind_spd_kt: Double, gust_kt: Double,
> > wind_spd_kmh: Double, press: Double, rain_trace:
> > Double)
> > case class Observation(notice: Notice, header: Header, data: List
> > [Data])
> > json.extract[Observation]
--
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[Lift] Re: Parcing Json
Hi,
That's almost correct. I did following changes after looking into JSON
content.
1. 'notice' and 'header' are JSON arrays just like 'data'. Therefore:
case class Observation(notice: List[Notice], header: List[Header],
data: List[Data])
2. There's optional data in JSON (some datapoints are nulls and Scala
Int or Double can't take null values). This can be fixed by extracting
into Option.
3. The extracted Observation is in JSON field 'observations'.
Therefore:
(json \ "observations").extract[Observation]
Your error stack trace suggests that you have an old version of lift-
json. Please upgrade to M8, there was a critical bug in case class
extraction in older versions.
Full example which works for me:
implicit val formats = net.liftweb.json.DefaultFormats
case class Notice(copyright: String, copyright_url: String,
disclaimer_url: String)
case class Header(refresh_message: String, ID: String, main_ID:
String, name: String, state_time_zone: String, time_zone: String,
product_name: String, state: String)
case class Data(sort_order: Int, wmo: Int, history_product: String,
local_date_time: String,
local_date_time_full: String, air_temp: Option
[Double], dewpt: Option[Double], apparent_t: Option[Double],
rel_hum: Option[Int], delta_t: Option[Double],
wind_dir: String, wind_spd_kt: Option[Double], gust_kt: Option
[Double],
wind_spd_kmh: Option[Double], press: Option[Double],
rain_trace: String)
case class Observation(notice: List[Notice], header: List[Header],
data: List[Data])
(json \ "observations").extract[Observation]
Cheers Joni
On 3 tammi, 09:17, Randinn wrote:
> I'm having a bit of trouble with Lift Json parcing, I know I'm not
> doing it correctly but looking at the examples I cannot figure out
> what, anyway, here is the code in question. If someone could point
> me in the right direction that would be great, thanks in advance.
>
> class HelloWorld {
> def howdy = Welcome to hello-lift at {new
> _root_.java.util.Date}
> val http = new Http
> val bos = new ByteArrayOutputStream
> val myRequest = new Request("http://www.bom.gov.au/fwo/IDV60901/
> IDV60901.94868.json")
> val rawdata = http(myRequest >>> bos)
> val bs = bos.toString
> val db = :/("www.bom.gov.au")
>
> val json = parse(bs)
>
> implicit val formats = net.liftweb.json.DefaultFormats
> case class Notice(copyright: String, copyright_url: String,
> disclaimer_url: String)
> case class Header(refresh_message: String, ID: String, main_ID:
> String, name: String, state_time_zone: String,
> time_zone: String, product_name: String, state:
> String)
> case class Data(sort_order: Int, wmo: Int, history_product: String,
> local_date_time: String,
> local_date_time_full: Int, air_temp: Double, dewpt:
> Double, apparent_t: Double,
> rel_hum: Double, delta_t: Double, wind_dir: Double,
> wind_spd_kt: Double, gust_kt: Double,
> wind_spd_kmh: Double, press: Double, rain_trace:
> Double)
> case class Observation(notice: Notice, header: Header, data: List
> [Data])
> json.extract[Observation]
>
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