RE: Scala: How to match a java object????
Hi, thank you all for the asssistance.
It is odd, it works when creating a new java.mathBigDecimal object, but not if
I work directly with
scala 5 match { case x: java.math.BigDecimal = 2 }
console:23: error: scrutinee is incompatible with pattern type;
found : java.math.BigDecimal
required: Int
5 match { case x: java.math.BigDecimal = 2 }
I will try and see how it works for my Seq[Any] and see. Thanks for the work
arounds.
Saif
From: Sujit Pal [mailto:sujitatgt...@gmail.com]
Sent: Tuesday, August 18, 2015 6:25 PM
To: Ellafi, Saif A.
Cc: wrbri...@gmail.com; user
Subject: Re: Scala: How to match a java object
Hi Saif,
Would this work?
import scala.collection.JavaConversions._
new java.math.BigDecimal(5) match { case x: java.math.BigDecimal =
x.doubleValue }
It gives me on the scala console.
res9: Double = 5.0
Assuming you had a stream of BigDecimals, you could just call map on it.
myBigDecimals.map(_.doubleValue)
to get your Seq of Doubles. You will need the JavaConversions._ import to allow
Java Doubles to be treated by Scala as Scala Doubles.
-sujit
On Tue, Aug 18, 2015 at 12:59 PM,
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi, thank you for further assistance
you can reproduce this by simply running
5 match { case java.math.BigDecimal = 2 }
In my personal case, I am applying a map acton to a Seq[Any], so the elements
inside are of type any, to which I need to apply a proper
.asInstanceOf[WhoYouShouldBe].
Saif
From: William Briggs [mailto:wrbri...@gmail.commailto:wrbri...@gmail.com]
Sent: Tuesday, August 18, 2015 4:46 PM
To: Ellafi, Saif A.; user@spark.apache.orgmailto:user@spark.apache.org
Subject: Re: Scala: How to match a java object
Could you share your pattern matching expression that is failing?
On Tue, Aug 18, 2015, 3:38 PM
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi all,
I am trying to run a spark job, in which I receive java.math.BigDecimal
objects, instead of the scala equivalents, and I am trying to convert them into
Doubles.
If I try to match-case this object class, I get: “error: object
java.math.BigDecimal is not a value”
How could I get around matching java objects? I would like to avoid a multiple
try-catch on ClassCastExceptions for all my checks.
Thank you,
Saif
RE: Scala: How to match a java object????
It is okay. this methodology works very well for mapping objects of my Seq[Any].
It is indeed very cool :-)
Saif
From: Ted Yu [mailto:yuzhih...@gmail.com]
Sent: Wednesday, August 19, 2015 10:47 AM
To: Ellafi, Saif A.
Cc: sujitatgt...@gmail.com; wrbri...@gmail.com; user@spark.apache.org
Subject: Re: Scala: How to match a java object
Saif:
In your example below, the error was due to there is no automatic conversion
from Int to BigDecimal.
Cheers
On Aug 19, 2015, at 6:40 AM,
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi, thank you all for the asssistance.
It is odd, it works when creating a new java.mathBigDecimal object, but not if
I work directly with
scala 5 match { case x: java.math.BigDecimal = 2 }
console:23: error: scrutinee is incompatible with pattern type;
found : java.math.BigDecimal
required: Int
5 match { case x: java.math.BigDecimal = 2 }
I will try and see how it works for my Seq[Any] and see. Thanks for the work
arounds.
Saif
From: Sujit Pal [mailto:sujitatgt...@gmail.com]
Sent: Tuesday, August 18, 2015 6:25 PM
To: Ellafi, Saif A.
Cc: wrbri...@gmail.commailto:wrbri...@gmail.com; user
Subject: Re: Scala: How to match a java object
Hi Saif,
Would this work?
import scala.collection.JavaConversions._
new java.math.BigDecimal(5) match { case x: java.math.BigDecimal =
x.doubleValue }
It gives me on the scala console.
res9: Double = 5.0
Assuming you had a stream of BigDecimals, you could just call map on it.
myBigDecimals.map(_.doubleValue)
to get your Seq of Doubles. You will need the JavaConversions._ import to allow
Java Doubles to be treated by Scala as Scala Doubles.
-sujit
On Tue, Aug 18, 2015 at 12:59 PM,
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi, thank you for further assistance
you can reproduce this by simply running
5 match { case java.math.BigDecimal = 2 }
In my personal case, I am applying a map acton to a Seq[Any], so the elements
inside are of type any, to which I need to apply a proper
.asInstanceOf[WhoYouShouldBe].
Saif
From: William Briggs [mailto:wrbri...@gmail.commailto:wrbri...@gmail.com]
Sent: Tuesday, August 18, 2015 4:46 PM
To: Ellafi, Saif A.; user@spark.apache.orgmailto:user@spark.apache.org
Subject: Re: Scala: How to match a java object
Could you share your pattern matching expression that is failing?
On Tue, Aug 18, 2015, 3:38 PM
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi all,
I am trying to run a spark job, in which I receive java.math.BigDecimal
objects, instead of the scala equivalents, and I am trying to convert them into
Doubles.
If I try to match-case this object class, I get: “error: object
java.math.BigDecimal is not a value”
How could I get around matching java objects? I would like to avoid a multiple
try-catch on ClassCastExceptions for all my checks.
Thank you,
Saif
Re: Scala: How to match a java object????
Saif:
In your example below, the error was due to there is no automatic conversion
from Int to BigDecimal.
Cheers
On Aug 19, 2015, at 6:40 AM, saif.a.ell...@wellsfargo.com
saif.a.ell...@wellsfargo.com wrote:
Hi, thank you all for the asssistance.
It is odd, it works when creating a new java.mathBigDecimal object, but not
if I work directly with
scala 5 match { case x: java.math.BigDecimal = 2 }
console:23: error: scrutinee is incompatible with pattern type;
found : java.math.BigDecimal
required: Int
5 match { case x: java.math.BigDecimal = 2 }
I will try and see how it works for my Seq[Any] and see. Thanks for the work
arounds.
Saif
From: Sujit Pal [mailto:sujitatgt...@gmail.com]
Sent: Tuesday, August 18, 2015 6:25 PM
To: Ellafi, Saif A.
Cc: wrbri...@gmail.com; user
Subject: Re: Scala: How to match a java object
Hi Saif,
Would this work?
import scala.collection.JavaConversions._
new java.math.BigDecimal(5) match { case x: java.math.BigDecimal =
x.doubleValue }
It gives me on the scala console.
res9: Double = 5.0
Assuming you had a stream of BigDecimals, you could just call map on it.
myBigDecimals.map(_.doubleValue)
to get your Seq of Doubles. You will need the JavaConversions._ import to
allow Java Doubles to be treated by Scala as Scala Doubles.
-sujit
On Tue, Aug 18, 2015 at 12:59 PM, saif.a.ell...@wellsfargo.com wrote:
Hi, thank you for further assistance
you can reproduce this by simply running
5 match { case java.math.BigDecimal = 2 }
In my personal case, I am applying a map acton to a Seq[Any], so the elements
inside are of type any, to which I need to apply a proper
.asInstanceOf[WhoYouShouldBe].
Saif
From: William Briggs [mailto:wrbri...@gmail.com]
Sent: Tuesday, August 18, 2015 4:46 PM
To: Ellafi, Saif A.; user@spark.apache.org
Subject: Re: Scala: How to match a java object
Could you share your pattern matching expression that is failing?
On Tue, Aug 18, 2015, 3:38 PM saif.a.ell...@wellsfargo.com wrote:
Hi all,
I am trying to run a spark job, in which I receive java.math.BigDecimal
objects, instead of the scala equivalents, and I am trying to convert them
into Doubles.
If I try to match-case this object class, I get: “error: object
java.math.BigDecimal is not a value”
How could I get around matching java objects? I would like to avoid a
multiple try-catch on ClassCastExceptions for all my checks.
Thank you,
Saif
RE: Scala: How to match a java object????
Hi, thank you for further assistance
you can reproduce this by simply running
5 match { case java.math.BigDecimal = 2 }
In my personal case, I am applying a map acton to a Seq[Any], so the elements
inside are of type any, to which I need to apply a proper
.asInstanceOf[WhoYouShouldBe].
Saif
From: William Briggs [mailto:wrbri...@gmail.com]
Sent: Tuesday, August 18, 2015 4:46 PM
To: Ellafi, Saif A.; user@spark.apache.org
Subject: Re: Scala: How to match a java object
Could you share your pattern matching expression that is failing?
On Tue, Aug 18, 2015, 3:38 PM
saif.a.ell...@wellsfargo.commailto:saif.a.ell...@wellsfargo.com wrote:
Hi all,
I am trying to run a spark job, in which I receive java.math.BigDecimal
objects, instead of the scala equivalents, and I am trying to convert them into
Doubles.
If I try to match-case this object class, I get: “error: object
java.math.BigDecimal is not a value”
How could I get around matching java objects? I would like to avoid a multiple
try-catch on ClassCastExceptions for all my checks.
Thank you,
Saif
Re: Scala: How to match a java object????
On Tue, Aug 18, 2015 at 12:59 PM, saif.a.ell...@wellsfargo.com wrote:
5 match { case java.math.BigDecimal = 2 }
5 match { case _: java.math.BigDecimal = 2 }
--
Marcelo
-
To unsubscribe, e-mail: user-unsubscr...@spark.apache.org
For additional commands, e-mail: user-h...@spark.apache.org
Re: Scala: How to match a java object????
On Tue, Aug 18, 2015 at 1:19 PM, saif.a.ell...@wellsfargo.com wrote:
Hi, Can you please elaborate? I am confused :-)
You did note that the two pieces of code are different, right?
See http://docs.scala-lang.org/tutorials/tour/pattern-matching.html
for how to match things in Scala, especially the typed pattern
example.
-Original Message-
From: Marcelo Vanzin [mailto:van...@cloudera.com]
Sent: Tuesday, August 18, 2015 5:15 PM
To: Ellafi, Saif A.
Cc: wrbri...@gmail.com; user@spark.apache.org
Subject: Re: Scala: How to match a java object
On Tue, Aug 18, 2015 at 12:59 PM, saif.a.ell...@wellsfargo.com wrote:
5 match { case java.math.BigDecimal = 2 }
5 match { case _: java.math.BigDecimal = 2 }
--
Marcelo
--
Marcelo
-
To unsubscribe, e-mail: user-unsubscr...@spark.apache.org
For additional commands, e-mail: user-h...@spark.apache.org
Re: Scala: How to match a java object????
Could you share your pattern matching expression that is failing? On Tue, Aug 18, 2015, 3:38 PM saif.a.ell...@wellsfargo.com wrote: Hi all, I am trying to run a spark job, in which I receive *java.math.BigDecimal* objects, instead of the scala equivalents, and I am trying to convert them into Doubles. If I try to match-case this object class, I get: *“**error: object java.math.BigDecimal is not a value**”* How could I get around matching java objects? I would like to avoid a multiple try-catch on ClassCastExceptions for all my checks. Thank you, Saif
RE: Scala: How to match a java object????
Hi, Can you please elaborate? I am confused :-)
Saif
-Original Message-
From: Marcelo Vanzin [mailto:van...@cloudera.com]
Sent: Tuesday, August 18, 2015 5:15 PM
To: Ellafi, Saif A.
Cc: wrbri...@gmail.com; user@spark.apache.org
Subject: Re: Scala: How to match a java object
On Tue, Aug 18, 2015 at 12:59 PM, saif.a.ell...@wellsfargo.com wrote:
5 match { case java.math.BigDecimal = 2 }
5 match { case _: java.math.BigDecimal = 2 }
--
Marcelo
Re: Scala: How to match a java object????
Hi Saif,
Would this work?
import scala.collection.JavaConversions._
new java.math.BigDecimal(5) match { case x: java.math.BigDecimal =
x.doubleValue }
It gives me on the scala console.
res9: Double = 5.0
Assuming you had a stream of BigDecimals, you could just call map on it.
myBigDecimals.map(_.doubleValue)
to get your Seq of Doubles. You will need the JavaConversions._ import to
allow Java Doubles to be treated by Scala as Scala Doubles.
-sujit
On Tue, Aug 18, 2015 at 12:59 PM, saif.a.ell...@wellsfargo.com wrote:
Hi, thank you for further assistance
you can reproduce this by simply running
*5 match { case java.math.BigDecimal = 2 }*
In my personal case, I am applying a map acton to a Seq[Any], so the
elements inside are of type any, to which I need to apply a proper
.asInstanceOf[WhoYouShouldBe].
Saif
*From:* William Briggs [mailto:wrbri...@gmail.com]
*Sent:* Tuesday, August 18, 2015 4:46 PM
*To:* Ellafi, Saif A.; user@spark.apache.org
*Subject:* Re: Scala: How to match a java object
Could you share your pattern matching expression that is failing?
On Tue, Aug 18, 2015, 3:38 PM saif.a.ell...@wellsfargo.com wrote:
Hi all,
I am trying to run a spark job, in which I receive *java.math.BigDecimal
*objects,
instead of the scala equivalents, and I am trying to convert them into
Doubles.
If I try to match-case this object class, I get: *“error: object
java.math.BigDecimal is not a value”*
How could I get around matching java objects? I would like to avoid a
multiple try-catch on ClassCastExceptions for all my checks.
Thank you,
Saif
