date:20101108

Hi Eyal,

deploying a gui-less is the same thing as deploying any other gaej
appl (gwt, etc.)

Then, you can schedule regular jobs via cron: see
http://code.google.com/appengine/docs/java/config/cron.html
regards
didier

On Nov 8, 9:16 am, Eyal twoworldsf...@gmail.com wrote:
 Thank you Robert, and Starman.

 The thing is, the application that does the daily updates can't be a
 web application, at least not through GWT, because it needs to get a
 feed from Analytics, and it takes too long so that GWT throws a
 timeout exception.

 Is there a way to deploy a simple, GUI-less Java application, using
 App Engine's JDO to hit a datastore? And then set up a cron job, or
 anything like it?

 Thanks,
 Eyal

 On Nov 8, 1:18 am, Starman r...@arrova.ca wrote:

  As you know, you can deploy many versions of an app for the same app
  id. There is nothing that says it has to be the same app. Just deploy
  another app that does your weekly updates using another version
  string. Each version, even though it may not be the default one, gets
  its own url. You just need to trigger it one a week thereafter.

  On Nov 7, 5:23 pm, Eyal twoworldsf...@gmail.com wrote:

   Hi all,

   I need to have two separate applications hitting the same datastore.
   One updates it daily, and the other (app engine and GWT) reading from
   it on a regular basis. How is this done? Is there a way in the API to
   specify a specific datastore?

   Thanks,
   Eyal

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[appengine-java] Re: No API environment is registered for this thread

Hi Eyal,

Where do you run your application when getting this exception: on your
dev env or on the google infrastructure ?
regards
didier

On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:
 Thank you lp, and Didier.

 Actually this application will need to run in production, and not only
 in testing.

 I need to be able to update the application's datastore with a feed
 from Analytics. When I create a very simple GUI for it using GWT
 (basically just a submit button,) I get a timeout exception because
 the Analytics server takes too long to respond (it seems to be
 unsolvable at this point.) So I thought I'll just run it as a simple
 Java application -- and than I don't have the timeout problem and the
 Analytics feed works beautifully.

 But then -- this problem. When I create objects from the Analytics
 feed, and try to insert them into the datastore, I get the exception
 above.

 What am I missing?

 You help is greatly appreciated!

 Eyal

 On Nov 8, 6:21 am, Didier Durand durand.did...@gmail.com wrote:

  Hi,

  This comes when you are trying to run code within Eclipse without
  having starting properly the local runtime of App Engine: 
  seehttp://code.google.com/appengine/docs/java/tools/localunittesting.html
  (parag Datastore tests)

  I can also  supply my Junit init code when needed

  regards
  didier

  On Nov 7, 5:45 pm, Eyal twoworldsf...@gmail.com wrote:

   Hi all,

   I'm trying to use JDO in an app engine application on Eclipse. When I
   use a web interface I'm able to make it work just fine. But I need to
   be able to run it as a java application and when I try I get the
   following exception:

   java.lang.NullPointerException: No API environment is registered for
   this thread.
           at
   com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(Datas
toreApiHelper.java:
   108)
           at
   com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamesp
ace(DatastoreApiHelper.java:
   118)
           at com.google.appengine.api.datastore.Query.init(Query.java:87)
           at
   org.datanucleus.store.appengine.query.DatastoreQuery.validate(DatastoreQuer
y.java:
   649)
           at
   org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(Datasto
reQuery.java:
   215)
           at
   org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.
java:
   89)
           at org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
           at org.datanucleus.store.query.Query.executeWithArray(Query.java:
   1371)
           at org.datanucleus.store.query.Query.execute(Query.java:1344)
           at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221)
           at com.eyes.manager.UpdateManager.main(UpdateManager.java:39)

   This is my jdeoconfig.xml, which is generated by the Eclipse plugin:

   ?xml version=1.0 encoding=utf-8?
   jdoconfig xmlns=http://java.sun.com/xml/ns/jdo/jdoconfig;
      xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
      xsi:noNamespaceSchemaLocation=http://java.sun.com/xml/ns/jdo/
   jdoconfig

      persistence-manager-factory name=transactions-optional
          property name=javax.jdo.PersistenceManagerFactoryClass

   value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFa
ctory/

          property name=javax.jdo.option.ConnectionURL
   value=appengine/
          property name=javax.jdo.option.NontransactionalRead
   value=true/
          property name=javax.jdo.option.NontransactionalWrite
   value=true/
          property name=javax.jdo.option.RetainValues value=true/
          property name=datanucleus.appengine.autoCreateDatastoreTxns
   value=true/
      /persistence-manager-factory
   /jdoconfig

   Any idea how can I solve this? How do I register the API
   Environment?

   Thanks!
   Eyal

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[appengine-java] Re: No API environment is registered for this thread

On my dev, when running As A Java Application. If I try to run it as
a Web Application I get a Timeout exception, because the Analytics
feed takes too long to respond...

Thanks for looking into this, Didier!

Eyal

On Nov 8, 1:55 pm, Didier Durand durand.did...@gmail.com wrote:
 Hi Eyal,

 Where do you run your application when getting this exception: on your
 dev env or on the google infrastructure ?
 regards
 didier

 On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:







  Thank you lp, and Didier.

  Actually this application will need to run in production, and not only
  in testing.

  I need to be able to update the application's datastore with a feed
  from Analytics. When I create a very simple GUI for it using GWT
  (basically just a submit button,) I get a timeout exception because
  the Analytics server takes too long to respond (it seems to be
  unsolvable at this point.) So I thought I'll just run it as a simple
  Java application -- and than I don't have the timeout problem and the
  Analytics feed works beautifully.

  But then -- this problem. When I create objects from the Analytics
  feed, and try to insert them into the datastore, I get the exception
  above.

  What am I missing?

  You help is greatly appreciated!

  Eyal

  On Nov 8, 6:21 am, Didier Durand durand.did...@gmail.com wrote:

   Hi,

   This comes when you are trying to run code within Eclipse without
   having starting properly the local runtime of App Engine: 
   seehttp://code.google.com/appengine/docs/java/tools/localunittesting.html
   (parag Datastore tests)

   I can also  supply my Junit init code when needed

   regards
   didier

   On Nov 7, 5:45 pm, Eyal twoworldsf...@gmail.com wrote:

Hi all,

I'm trying to use JDO in an app engine application on Eclipse. When I
use a web interface I'm able to make it work just fine. But I need to
be able to run it as a java application and when I try I get the
following exception:

java.lang.NullPointerException: No API environment is registered for
this thread.
        at
com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(Datas
 toreApiHelper.java:
108)
        at
com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamesp
 ace(DatastoreApiHelper.java:
118)
        at 
com.google.appengine.api.datastore.Query.init(Query.java:87)
        at
org.datanucleus.store.appengine.query.DatastoreQuery.validate(DatastoreQuer
 y.java:
649)
        at
org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(Datasto
 reQuery.java:
215)
        at
org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.
 java:
89)
        at 
org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
        at 
org.datanucleus.store.query.Query.executeWithArray(Query.java:
1371)
        at org.datanucleus.store.query.Query.execute(Query.java:1344)
        at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221)
        at com.eyes.manager.UpdateManager.main(UpdateManager.java:39)

This is my jdeoconfig.xml, which is generated by the Eclipse plugin:

?xml version=1.0 encoding=utf-8?
jdoconfig xmlns=http://java.sun.com/xml/ns/jdo/jdoconfig;
   xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
   xsi:noNamespaceSchemaLocation=http://java.sun.com/xml/ns/jdo/
jdoconfig

   persistence-manager-factory name=transactions-optional
       property name=javax.jdo.PersistenceManagerFactoryClass

value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFa
 ctory/

       property name=javax.jdo.option.ConnectionURL
value=appengine/
       property name=javax.jdo.option.NontransactionalRead
value=true/
       property name=javax.jdo.option.NontransactionalWrite
value=true/
       property name=javax.jdo.option.RetainValues value=true/
       property name=datanucleus.appengine.autoCreateDatastoreTxns
value=true/
   /persistence-manager-factory
/jdoconfig

Any idea how can I solve this? How do I register the API
Environment?

Thanks!
Eyal

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[appengine-java] Timeout while fetching URLFetch

2010-11-08 Thread bengroot87

I'm using the XMLReader to read a feed like below.

URLConnection urlConnection = url.openConnection();
XmlReader reader = new XmlReader(urlConnection);

When this is called I receive within 5 seconds an IOException Timeout
while fetching

I also tried to set the timeouts but still no luck.
urlConnection.setReadTimeout(1);
urlConnection.setConnectTimeout(1);

Seems to be the size of the feed to read. When I call a smaller feed
it works properly. Is there any workaround or solution?

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[appengine-java] Re: Timeout while fetching URLFetch

2010-11-08 Thread PhilBeaudoin

Also see my similar question from a few days ago:
http://goo.gl/d3T2d

On Nov 8, 4:41 am, bengroot87 b...@dutchtape.com wrote:
 I'm using the XMLReader to read a feed like below.

 URLConnection urlConnection = url.openConnection();
 XmlReader reader = new XmlReader(urlConnection);

 When this is called I receive within 5 seconds an IOException Timeout
 while fetching

 I also tried to set the timeouts but still no luck.
 urlConnection.setReadTimeout(1);
 urlConnection.setConnectTimeout(1);

 Seems to be the size of the feed to read. When I call a smaller feed
 it works properly. Is there any workaround or solution?

-- 
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[appengine-java] Re: No API environment is registered for this thread

Eyal,

Now it's clear = you MUST run the application as a Web Application to
be able to activate the App Engine environment with the Datastore that
you need for JDO.

Then you MUST activate the local dev env for App Engine on your
machine : see my previous answer with the link.

If you don't do both actions above, it can not work as you wish.

regards
didier

On Nov 8, 1:39 pm, Eyal twoworldsf...@gmail.com wrote:
 On my dev, when running As A Java Application. If I try to run it as
 a Web Application I get a Timeout exception, because the Analytics
 feed takes too long to respond...

 Thanks for looking into this, Didier!

 Eyal

 On Nov 8, 1:55 pm, Didier Durand durand.did...@gmail.com wrote:

  Hi Eyal,

  Where do you run your application when getting this exception: on your
  dev env or on the google infrastructure ?
  regards
  didier

  On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:

   Thank you lp, and Didier.

   Actually this application will need to run in production, and not only
   in testing.

   I need to be able to update the application's datastore with a feed
   from Analytics. When I create a very simple GUI for it using GWT
   (basically just a submit button,) I get a timeout exception because
   the Analytics server takes too long to respond (it seems to be
   unsolvable at this point.) So I thought I'll just run it as a simple
   Java application -- and than I don't have the timeout problem and the
   Analytics feed works beautifully.

   But then -- this problem. When I create objects from the Analytics
   feed, and try to insert them into the datastore, I get the exception
   above.

   What am I missing?

   You help is greatly appreciated!

   Eyal

   On Nov 8, 6:21 am, Didier Durand durand.did...@gmail.com wrote:

Hi,

This comes when you are trying to run code within Eclipse without
having starting properly the local runtime of App Engine: 
seehttp://code.google.com/appengine/docs/java/tools/localunittesting.html
(parag Datastore tests)

I can also  supply my Junit init code when needed

regards
didier

On Nov 7, 5:45 pm, Eyal twoworldsf...@gmail.com wrote:

 Hi all,

 I'm trying to use JDO in an app engine application on Eclipse. When I
 use a web interface I'm able to make it work just fine. But I need to
 be able to run it as a java application and when I try I get the
 following exception:

 java.lang.NullPointerException: No API environment is registered for
 this thread.
         at
 com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(Datas
  toreApiHelper.java:
 108)
         at
 com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamesp
  ace(DatastoreApiHelper.java:
 118)
         at 
 com.google.appengine.api.datastore.Query.init(Query.java:87)
         at
 org.datanucleus.store.appengine.query.DatastoreQuery.validate(DatastoreQuer
  y.java:
 649)
         at
 org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(Datasto
  reQuery.java:
 215)
         at
 org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.
  java:
 89)
         at 
 org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
         at 
 org.datanucleus.store.query.Query.executeWithArray(Query.java:
 1371)
         at org.datanucleus.store.query.Query.execute(Query.java:1344)
         at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221)
         at com.eyes.manager.UpdateManager.main(UpdateManager.java:39)

 This is my jdeoconfig.xml, which is generated by the Eclipse plugin:

 ?xml version=1.0 encoding=utf-8?
 jdoconfig xmlns=http://java.sun.com/xml/ns/jdo/jdoconfig;
    xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
    xsi:noNamespaceSchemaLocation=http://java.sun.com/xml/ns/jdo/
 jdoconfig

    persistence-manager-factory name=transactions-optional
        property name=javax.jdo.PersistenceManagerFactoryClass

 value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFa
  ctory/

        property name=javax.jdo.option.ConnectionURL
 value=appengine/
        property name=javax.jdo.option.NontransactionalRead
 value=true/
        property name=javax.jdo.option.NontransactionalWrite
 value=true/
        property name=javax.jdo.option.RetainValues value=true/
        property name=datanucleus.appengine.autoCreateDatastoreTxns
 value=true/
    /persistence-manager-factory
 /jdoconfig

 Any idea how can I solve this? How do I register the API
 Environment?

 Thanks!
 Eyal

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[appengine-java] Re: No API environment is registered for this thread

Hi Didier,

Thanks for your reply. Here's the problem, though: when I run it as a
web application I'm getting a timeout error. I've already posted this
issue on the Analytics dev group at (http://groups.google.com/group/
google-analytics-data-export-api/browse_thread/thread/
3f9956a25d718b59) but so far no one responded.

Do you have experience integrating analytics into app engine? I'm sure
it can be done but I've been trying to get it to work for 2 days now
with absolutely no progress. If you, or anyone can help me out I'm
sure my company will be willing to pay for this service.

Thanks,
Eyal




On Nov 8, 5:17 pm, Didier Durand durand.did...@gmail.com wrote:
 Eyal,

 Now it's clear = you MUST run the application as a Web Application to
 be able to activate the App Engine environment with the Datastore that
 you need for JDO.

 Then you MUST activate the local dev env for App Engine on your
 machine : see my previous answer with the link.

 If you don't do both actions above, it can not work as you wish.

 regards
 didier

 On Nov 8, 1:39 pm, Eyal twoworldsf...@gmail.com wrote:







  On my dev, when running As A Java Application. If I try to run it as
  a Web Application I get a Timeout exception, because the Analytics
  feed takes too long to respond...

  Thanks for looking into this, Didier!

  Eyal

  On Nov 8, 1:55 pm, Didier Durand durand.did...@gmail.com wrote:

   Hi Eyal,

   Where do you run your application when getting this exception: on your
   dev env or on the google infrastructure ?
   regards
   didier

   On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:

Thank you lp, and Didier.

Actually this application will need to run in production, and not only
in testing.

I need to be able to update the application's datastore with a feed
from Analytics. When I create a very simple GUI for it using GWT
(basically just a submit button,) I get a timeout exception because
the Analytics server takes too long to respond (it seems to be
unsolvable at this point.) So I thought I'll just run it as a simple
Java application -- and than I don't have the timeout problem and the
Analytics feed works beautifully.

But then -- this problem. When I create objects from the Analytics
feed, and try to insert them into the datastore, I get the exception
above.

What am I missing?

You help is greatly appreciated!

Eyal

On Nov 8, 6:21 am, Didier Durand durand.did...@gmail.com wrote:

 Hi,

 This comes when you are trying to run code within Eclipse without
 having starting properly the local runtime of App Engine: 
 seehttp://code.google.com/appengine/docs/java/tools/localunittesting.html
 (parag Datastore tests)

 I can also  supply my Junit init code when needed

 regards
 didier

 On Nov 7, 5:45 pm, Eyal twoworldsf...@gmail.com wrote:

  Hi all,

  I'm trying to use JDO in an app engine application on Eclipse. When 
  I
  use a web interface I'm able to make it work just fine. But I need 
  to
  be able to run it as a java application and when I try I get the
  following exception:

  java.lang.NullPointerException: No API environment is registered for
  this thread.
          at
  com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(Datas
   toreApiHelper.java:
  108)
          at
  com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppIdNamesp
   ace(DatastoreApiHelper.java:
  118)
          at 
  com.google.appengine.api.datastore.Query.init(Query.java:87)
          at
  org.datanucleus.store.appengine.query.DatastoreQuery.validate(DatastoreQuer
   y.java:
  649)
          at
  org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(Datasto
   reQuery.java:
  215)
          at
  org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.
   java:
  89)
          at 
  org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
          at 
  org.datanucleus.store.query.Query.executeWithArray(Query.java:
  1371)
          at 
  org.datanucleus.store.query.Query.execute(Query.java:1344)
          at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:221)
          at 
  com.eyes.manager.UpdateManager.main(UpdateManager.java:39)

  This is my jdeoconfig.xml, which is generated by the Eclipse plugin:

  ?xml version=1.0 encoding=utf-8?
  jdoconfig xmlns=http://java.sun.com/xml/ns/jdo/jdoconfig;
     xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
     xsi:noNamespaceSchemaLocation=http://java.sun.com/xml/ns/jdo/
  jdoconfig

     persistence-manager-factory name=transactions-optional
         property name=javax.jdo.PersistenceManagerFactoryClass

  value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFa
   ctory/

[appengine-java] Re: No API environment is registered for this thread

Hi Didier,

Sure, here is an example method:

public SiteBasicData getSiteBasicData(AnalyticsService as, Site site,
DateTime date) {
SiteBasicData sd = new SiteBasicData();
as.setConnectTimeout(1);
as.setReadTimeout(1);
DataFeed dataFeed = null;
try {
DataQuery query = new DataQuery(new 
URL(https://www.google.com/
analytics/feeds/data));
DateTimeFormatter fmt = DateTimeFormat.forPattern(-MM-
dd);
query.setStartDate(date.toString(fmt));
query.setEndDate(date.toString(fmt));

 
query.setMetrics(ga:visitors,ga:visits,ga:pageviews,ga:newVisits,ga:bounces,ga:timeOnSite);
query.setMaxResults(50);
query.setIds(site.getTableID());


dataFeed = as.getFeed(query.getUrl(), DataFeed.class);

DataEntry entry = dataFeed.getEntries().get(0);
DecimalFormat dfDouble = new DecimalFormat(.##);
DecimalFormat dfZero = new DecimalFormat(#);

int visits =
Integer.parseInt(entry.stringValueOf(ga:visits));
int uniques =
Integer.parseInt(entry.stringValueOf(ga:visitors));
int newVisits =
Integer.parseInt(entry.stringValueOf(ga:newVisits));
int pageViews =
Integer.parseInt(entry.stringValueOf(ga:pageviews));
int bounces =
Integer.parseInt(entry.stringValueOf(ga:bounces));
int timeOnSite =
Integer.parseInt(entry.stringValueOf(ga:timeOnSite));

sd.setSite(site);
sd.setDate(date);
sd.setVisitors(visits);
sd.setUniqueVisitors(uniques);
sd.setNewVisits(newVisits);
sd.setReturningVisits(visits-newVisits);
sd.setPageViews(pageViews);
sd.setUniquePageViews(getUniquePageViews(as, site, date));
sd.setBounces(bounces);
sd.setTimeOnSite(timeOnSite);

} catch(Exception e) {
e.printStackTrace();
}
return sd;
}

Then I do the simple JDO to persist the sd object. But it doesn't even
get there because I get the Timeout while fetching exception.

Thanks!
Eyal


On Nov 8, 6:33 pm, Didier Durand durand.did...@gmail.com wrote:
 Hi Eyal,

 Can you detail (i.e post code samples) on what you do with Analytics
 (I need to be able to update the application's datastore with a feed
 from Analytics.) and how you want to do it.

 It's too vague as of now.

 regards

 didier

 On Nov 8, 4:41 pm, Eyal twoworldsf...@gmail.com wrote:







  Hi Didier,

  Thanks for your reply. Here's the problem, though: when I run it as a
  web application I'm getting a timeout error. I've already posted this
  issue on the Analytics dev group at (http://groups.google.com/group/
  google-analytics-data-export-api/browse_thread/thread/
  3f9956a25d718b59) but so far no one responded.

  Do you have experience integrating analytics into app engine? I'm sure
  it can be done but I've been trying to get it to work for 2 days now
  with absolutely no progress. If you, or anyone can help me out I'm
  sure my company will be willing to pay for this service.

  Thanks,
  Eyal

  On Nov 8, 5:17 pm, Didier Durand durand.did...@gmail.com wrote:

   Eyal,

   Now it's clear = you MUST run the application as a Web Application to
   be able to activate the App Engine environment with the Datastore that
   you need for JDO.

   Then you MUST activate the local dev env for App Engine on your
   machine : see my previous answer with the link.

   If you don't do both actions above, it can not work as you wish.

   regards
   didier

   On Nov 8, 1:39 pm, Eyal twoworldsf...@gmail.com wrote:

On my dev, when running As A Java Application. If I try to run it as
a Web Application I get a Timeout exception, because the Analytics
feed takes too long to respond...

Thanks for looking into this, Didier!

Eyal

On Nov 8, 1:55 pm, Didier Durand durand.did...@gmail.com wrote:

 Hi Eyal,

 Where do you run your application when getting this exception: on your
 dev env or on the google infrastructure ?
 regards
 didier

 On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:

  Thank you lp, and Didier.

  Actually this application will need to run in production, and not 
  only
  in testing.

  I need to be able to update the application's datastore with a feed
  from Analytics. When I create a very simple GUI for it using GWT
  (basically just a submit button,) I get a timeout exception because
  the Analytics server takes too long to respond (it seems to be
  unsolvable at this point.) So I thought I'll just run it as a simple
  Java application -- and than I don't have the timeout problem and 
  the
  Analytics feed works beautifully.

[appengine-java] Re: No API environment is registered for this thread

Just to complete the picture here's the initialization of the
AnalyticsService:

AnalyticsService as = new
AnalyticsService(gaExportAPI_acctSample_v1.0);
as.setUserCredentials(CLIENT_USERNAME, CLIENT_PASS);

Thanks again,
Eyal

On Nov 8, 7:27 pm, Eyal twoworldsf...@gmail.com wrote:
 Hi Didier,

 Sure, here is an example method:

         public SiteBasicData getSiteBasicData(AnalyticsService as, Site site,
 DateTime date) {
         SiteBasicData sd = new SiteBasicData();
         as.setConnectTimeout(1);
         as.setReadTimeout(1);
             DataFeed dataFeed = null;
             try {
                         DataQuery query = new DataQuery(new 
 URL(https://www.google.com/
 analytics/feeds/data));
                     DateTimeFormatter fmt = 
 DateTimeFormat.forPattern(-MM-
 dd);
                     query.setStartDate(date.toString(fmt));
                     query.setEndDate(date.toString(fmt));

 query.setMetrics(ga:visitors,ga:visits,ga:pageviews,ga:newVisits,ga:bounce 
 s,ga:timeOnSite);
                     query.setMaxResults(50);
                     query.setIds(site.getTableID());

                     dataFeed = as.getFeed(query.getUrl(), DataFeed.class);

                 DataEntry entry = dataFeed.getEntries().get(0);
                 DecimalFormat dfDouble = new DecimalFormat(.##);
                 DecimalFormat dfZero = new DecimalFormat(#);

                 int visits =
 Integer.parseInt(entry.stringValueOf(ga:visits));
                 int uniques =
 Integer.parseInt(entry.stringValueOf(ga:visitors));
                 int newVisits =
 Integer.parseInt(entry.stringValueOf(ga:newVisits));
                 int pageViews =
 Integer.parseInt(entry.stringValueOf(ga:pageviews));
                 int bounces =
 Integer.parseInt(entry.stringValueOf(ga:bounces));
                 int timeOnSite =
 Integer.parseInt(entry.stringValueOf(ga:timeOnSite));

                 sd.setSite(site);
                 sd.setDate(date);
                 sd.setVisitors(visits);
                 sd.setUniqueVisitors(uniques);
                 sd.setNewVisits(newVisits);
                 sd.setReturningVisits(visits-newVisits);
                 sd.setPageViews(pageViews);
                 sd.setUniquePageViews(getUniquePageViews(as, site, date));
                 sd.setBounces(bounces);
                 sd.setTimeOnSite(timeOnSite);

             } catch(Exception e) {
                 e.printStackTrace();
             }
             return sd;
         }

 Then I do the simple JDO to persist the sd object. But it doesn't even
 get there because I get the Timeout while fetching exception.

 Thanks!
 Eyal

 On Nov 8, 6:33 pm, Didier Durand durand.did...@gmail.com wrote:







  Hi Eyal,

  Can you detail (i.e post code samples) on what you do with Analytics
  (I need to be able to update the application's datastore with a feed
  from Analytics.) and how you want to do it.

  It's too vague as of now.

  regards

  didier

  On Nov 8, 4:41 pm, Eyal twoworldsf...@gmail.com wrote:

   Hi Didier,

   Thanks for your reply. Here's the problem, though: when I run it as a
   web application I'm getting a timeout error. I've already posted this
   issue on the Analytics dev group at (http://groups.google.com/group/
   google-analytics-data-export-api/browse_thread/thread/
   3f9956a25d718b59) but so far no one responded.

   Do you have experience integrating analytics into app engine? I'm sure
   it can be done but I've been trying to get it to work for 2 days now
   with absolutely no progress. If you, or anyone can help me out I'm
   sure my company will be willing to pay for this service.

   Thanks,
   Eyal

   On Nov 8, 5:17 pm, Didier Durand durand.did...@gmail.com wrote:

Eyal,

Now it's clear = you MUST run the application as a Web Application to
be able to activate the App Engine environment with the Datastore that
you need for JDO.

Then you MUST activate the local dev env for App Engine on your
machine : see my previous answer with the link.

If you don't do both actions above, it can not work as you wish.

regards
didier

On Nov 8, 1:39 pm, Eyal twoworldsf...@gmail.com wrote:

 On my dev, when running As A Java Application. If I try to run it as
 a Web Application I get a Timeout exception, because the Analytics
 feed takes too long to respond...

 Thanks for looking into this, Didier!

 Eyal

 On Nov 8, 1:55 pm, Didier Durand durand.did...@gmail.com wrote:

  Hi Eyal,

  Where do you run your application when getting this exception: on 
  your
  dev env or on the google infrastructure ?
  regards
  didier

  On Nov 8, 8:44 am, Eyal twoworldsf...@gmail.com wrote:

   Thank you lp, and Didier.

   Actually this application will need to run in production, and not 
   only
   in testing.

   I need to be able to update the application's datastore with a

[appengine-java] The class idv.petrie.prtm.model.Tweet is not persistable.

2010-11-08 Thread Petrie Wong

Sorry. I am just facing this defeat. I just followed the instructions
startup page and modified it. I try to google this but cannot find the
answer. Any one can help me?

pre
package idv.petrie.prtm.model;

import java.util.Date;

import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.Inheritance;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.InheritanceStrategy;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;

import com.google.appengine.api.datastore.Key;

@PersistenceCapable
@Inheritance(strategy = InheritanceStrategy.SUBCLASS_TABLE)
public class GeneticMessage implements Message {

@PersistenceCapable
public enum Status {
NEW, PREPROCESSED
}

@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;

@Persistent
private Date modifiedAt;

@Persistent
private String content;

@Persistent(serialized = true)
private Status status;

public GeneticMessage() {
setModifiedAt();
setStatus(Status.NEW);
}

public Key getKey() {
return key;
}

public void setKey(Key key) {
this.key = key;
}

public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content;
}

public void setModifiedAt() {
this.modifiedAt = new Date();
}

public Date getModifiedAt() {
return modifiedAt;
}

public void setStatus(Status status) {
this.status = status;
}

public Status getStatus() {
return status;
}
}
/pre
pre
package idv.petrie.prtm.model;

import java.util.Date;

import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.Unique;

@PersistenceCapable
public class Tweet extends GeneticMessage implements Message {


@Persistent
@Unique
private long id;

@Persistent
private Date createdAt;

@Persistent
private int fromUserId;

public Tweet() {
super();
}

public Tweet(String content) {
this();
setContent(content);
}


public Date getCreatedAt() {
return createdAt;
}

public void setCreatedAt(Date createdAt) {
this.createdAt = createdAt;
}

public int getFromUserId() {
return fromUserId;
}

public void setFromUserId(int fromUserId) {
this.fromUserId = fromUserId;
}

public void setId(long l) {
this.id = l;
}

public long getId() {
return id;
}
}
/pre

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[appengine-java] DTO object

2010-11-08 Thread Koen Maes

Hi,

I am using GAE/JAVA/GWT 2.1 and storage JDO/Datastore
GWT 2.1 and the RequestFactory are in use to send DTO objects between
client and server.

Now, I have a Entity with a property of type
com.google.appengine.api.datastore.Email. But I cannot directly use
this type on the proxy DTO object, this class is not known on the
client.
First solution is to pass write wrappers getEmailAsString()/
setEmailAsString() on the Entity and use these properties on the proxy
DTO object. But that is not good, i will loose change detection for
instance.

Obviously, my question is how to pass the complex
com.google.appengine.api.datastore.* types on DTO objects ??

Koen

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[appengine-java] about【PreparedQuery.countEntities ()】 problem, how can I get the total count of a specific Q uery?

2010-11-08 Thread liqwei

case 【PreparedQuery.countEntities()】 is Deprecated。

but how can I get the Total Count of a specific Query?

the  【PreparedQuery.countEntities(FetchOptions fetchOptions) 】only
return the count specificed by fetchOptions!

ex.
Query query = new Query(Book.getKind());  // there are 3 entities with
Book kind in datastore zone
PreparedQuery pq = ds.prepare(query);
FetchOptions option = FetchOptions.Builder.withLimit(2);
out.println(pq.countEntities()); // the count I really
want, but the method is Deprecated currently;
out.println(pq.countEntities(option));// the count only return
2, but it should return 3 entity in this query;

3ks!

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[appengine-java] Blank Page on Server

2010-11-08 Thread PawanModi

Hi,

I am using Java SDK for Google App Engine. Using eclipse google plugin
for application development. My application works fine in my local
machine in eclipse but getting blank page on application server.

But I used python for bulkloader. I stuck here badly and not able to
proceed. I am not sure how to fix this. Can any one help me in this.

Application Engine SDK version 1.3.5.
GWT SDK 2.0.4


Thanks  regards,
Pawan Modi

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[appengine-java] Determine Tenancy Quota

2010-11-08 Thread Johan Pretorius

Hi

I am writing an application that will allow an undetermined number of
clients on the application.
Every client's data will be stored using the NameSpace mechanism.

There will be a huge difference on the quota usage per client. (A
client will be a company and the company will add users to it's profile.
The users will log on and send data to the application. Reports can
also be requested.)

I don't want to ask clients using little quota to subside clients using
lots of quota. I want to ask each one what he uses.

Is there a way to determine quota usage per NameSpace or would it be
better (or allowed) to host a completely seperate application per
client?

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Re: [appengine-java] Sync datastore between server and local

You can, but one will need to expose an API to the other applications.
Different application IDs cannot access the same datastore. Different
deployed versions of the same application can.

As far as syncing goes, there's the bulk upload/download tool:

http://code.google.com/appengine/docs/python/tools/uploadingdata.html

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Developer Programs Engineer, Google App Engine
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On Thu, Nov 4, 2010 at 9:15 PM, Thomas Wiradikusuma
wiradikus...@gmail.comwrote:

Hi,

Is there any way to sync data in datastore between server (live)
and
local (localhost)? I have some test data that I want to make
available
to both environments.

Another question:

I'm splitting the web to front-facing webapp and admin panel
webapp:
web.latest.myapp.appspot.com and admin.latest.myapp.appsot.com.

I'm aware that both share the same datastore in the server (live).
Can
I do that (share same datastore) in local (localhost)? I.e. Can I
make
two (or more) Java webapps to access the same datastore file?

(this is a repost from google app engine group)

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Re: [appengine-java] mapreduce - passing filters

No, the mapper will go over everything. If the number of entities is small,
you are better off placing an indexed property on ONLY these fields, then
just iterating over them with a cursor and either a local client making
multiple HTTP calls to your App Engine app or chained task queues.

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Reddit: http://www.reddit.com/r/appengine
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On Sun, Nov 7, 2010 at 5:58 AM, aswath satrasala aswath.satras...@gmail.com
wrote:

Hello,
I want to perform few aggregations on entities of a kind that are filtered
by the property.
The entities I want to perform the aggregation is small compared to the
complete entity set.
Is there any way to pass the filters to the mapper, so that only those
entities are retrieved and aggregation is performed

*Regards
-Aswath
http://vs-accounting.appspot.com
Accounting for Indian markets.*

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Re: [appengine-java] Determine Tenancy Quota

There's no way currently to determine quota usage per namespace. Our
preference is that you use a single, multitenant namespaced application.

Do you have severely assymetric clients app usage? I'm curious to see if the
current pricing structure of $0.12 gigabyte/$0.15 gigabyte stored is
actually a restrictive factor. I would think the cost of your
application/consulting would far exceed any hosting costs. Maybe there's a
compromise here - for most low traffic applications, place them into a
single app, but for higher spend clients, create new application IDs for
them.

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Developer Programs Engineer, Google App Engine
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On Mon, Nov 8, 2010 at 10:07 AM, Johan Pretorius
johanpretorius2...@gmail.com wrote:

I am writing an application that will allow an undetermined number of
clients on the application.
Every client's data will be stored using the *NameSpace* mechanism.

There will be a huge difference on the quota usage per client. (A client
will be a company and the company will add users to it's profile.
The users will log on and send data to the application. Reports can also be
requested.)

I don't want to ask clients using little quota to subside clients using
lots of quota. I want to ask each one what he uses.

Is there a way to determine quota usage per *NameSpace* or would it be
better (or allowed) to host a completely seperate application per client?

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[appengine-java] Re: DTO object

2010-11-08 Thread Starman

Remap these complex types onto native Java types while copying your
entities onto your dtos... or are you sending your entities to the
client directly?

Usually, you will not want to send the entities to the client as it
exposes your data model directly. You should create your service layer
so as to be friendly to other clients besides your own. Create a
remoting API that is a bit more abstract than your entities so as to
be easily exposed through a REST API for instance.

When I copy my entities onto my dtos, some entity fields don't even
make it into the dto. Others only have getters in the dto because they
are read-only to the client. Those that do get into the dto get
converted to native Java types. For instance, Text gets converted to
String. Key gets encoded to a url friendly string. If I have Set
fields on the entities to manager my relations (property lists), I
remap those to ArrayList... First, don't serialize interfaces to GWT
client, you'll get Javascript bloat. Then, Hashmap is costly to
serialize because String.hashCode() is not the same on in Java and in
Javascript. Hence, all the items need to be re-inserted into a client
side map. Of course, in Web mode, performance is good enough... but in
development mode, your data transfers will become really slow for
somewhat big transfers.

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[appengine-java] Re: Determine Tenancy Quota

2010-11-08 Thread Mouseclicker

Is this recommendation just for quota distribution (so that the big
ones do not eat up the quota of the smaller ones) or is this a
recommendation for better scalability and performance?

I always had the impression that the GAE infrastructure would be able
to handle such access patterns and give good throughput and response
time even for unbalanced loads from different clients. In fact this
would be one of the main benefits of cloud that I just have to manage
one app instance and do not have to care about load and its
distribution. It would be good to know if there are limitations.

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[appengine-java] Re: mapreduce - passing filters

2010-11-08 Thread Brad

Ikai,

Are there any plans to support filter functionality in the future? I
have a similar situation where I want to iterate over a collection
that is big enough to be used by the mapper framework, but much
smaller than the actual collection size of all entities of that kind.

Brad

On Nov 8, 11:56 am, Ikai Lan (Google) ikai.l+gro...@google.com
wrote:
 No, the mapper will go over everything. If the number of entities is small,
 you are better off placing an indexed property on ONLY these fields, then
 just iterating over them with a cursor and either a local client making
 multiple HTTP calls to your App Engine app or chained task queues.

 --
 Ikai Lan
 Developer Programs Engineer, Google App Engine
 Blogger:http://googleappengine.blogspot.com
 Reddit:http://www.reddit.com/r/appengine
 Twitter:http://twitter.com/app_engine

 On Sun, Nov 7, 2010 at 5:58 AM, aswath satrasala aswath.satras...@gmail.com



  wrote:
  Hello,
  I want to perform few aggregations on entities of a kind that are filtered
  by the property.
  The entities I want to perform the aggregation is small compared to the
  complete entity set.
  Is there any way to pass the filters to the mapper, so that only those
  entities are retrieved and aggregation is performed

  *Regards
  -Aswath
 http://vs-accounting.appspot.com
  Accounting for Indian markets.*

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  unsubscr...@googlegroups.com
  .
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 http://groups.google.com/group/google-appengine-java?hl=en.

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Re: [appengine-java] Re: mapreduce - passing filters

There was talk about supporting it, but the priority is getting out the
shuffle/reduce steps first.

appengine-mapreduce is an open source project. You can probably just
edit/subclass DatastoreInputFormat.java and add the filter functionality:

http://www.google.com/codesearch/p?hl=en#XwsseYUY0Ps/trunk/java/src/com/google/appengine/tools/mapreduce/DatastoreInputFormat.javaq=Query%20package:http://appengine-mapreduce%5C.googlecode%5C.comsa=Ncd=10ct=rc

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On Mon, Nov 8, 2010 at 12:28 PM, Brad bseef...@finallythebasics.com wrote:

Ikai,

Are there any plans to support filter functionality in the future? I
have a similar situation where I want to iterate over a collection
that is big enough to be used by the mapper framework, but much
smaller than the actual collection size of all entities of that kind.

Brad

On Nov 8, 11:56 am, Ikai Lan (Google)
ikai.l+gro...@google.comikai.l%2bgro...@google.com

wrote:
No, the mapper will go over everything. If the number of entities is
small,
you are better off placing an indexed property on ONLY these fields, then
just iterating over them with a cursor and either a local client making
multiple HTTP calls to your App Engine app or chained task queues.

--
Ikai Lan
Developer Programs Engineer, Google App Engine
Blogger:http://googleappengine.blogspot.com
Reddit:http://www.reddit.com/r/appengine
Twitter:http://twitter.com/app_engine

On Sun, Nov 7, 2010 at 5:58 AM, aswath satrasala
aswath.satras...@gmail.com

wrote:
Hello,
I want to perform few aggregations on entities of a kind that are
filtered
by the property.
The entities I want to perform the aggregation is small compared to the
complete entity set.
Is there any way to pass the filters to the mapper, so that only those
entities are retrieved and aggregation is performed

*Regards
-Aswath
http://vs-accounting.appspot.com
Accounting for Indian markets.*

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[appengine-java] Re: DTO object

2010-11-08 Thread Koen Maes

Hi Starman, Thx for your reply.

From what I understand, you are manually copying the properties from
the Entity to the DTO. But this process is automated in GWT 2.1

So, I am not sending my entities directly, but the proxies as per the
documentation : 
http://code.google.com/webtoolkit/doc/latest/DevGuideRequestFactory.html

An entity proxy is a client-side representation of an entity,
otherwise known as a DTO (Data Transfer Object). With RequestFactory,
entity proxies are interfaces that extend the EntityProxy interface,
which is the hook used to indicate that an object can be managed by
RequestFactory. RequestFactory automatically populates bean-style
properties between entities on the server and the corresponding
EntityProxy on the client, which simplifies using the DTO pattern.
Furthermore, the EntityProxy interface enables RequestFactory to
compute and send only changes (deltas) to the server.

Entity proxies simply extend the EntityProxy interface and use the
@ProxyFor annotation to reference the server-side entity being
represented. It is not necessary to represent every property and
method from the server-side entity in the EntityProxy, only getters
and setters for properties that should be exposed to the client.

The entity proxies are merely interfaces that are being populated by
the new GWT 2.1 RequestFactory framework. I have no control over this
copying process. Per definition, getters/setters of the real entity
are injected into the EntityProxy whenever they are present;

So my problem still stands : what about complex values like
com.google.appengine.api.datastore.Email that are not known by the
client side code ? How to transfer these complex values to the client.

Any insight very welcome !

Koen

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Re: [appengine-java] Re: Trouble unit testing JPA data access objects.

2010-11-08 Thread Lucio Piccoli

hi didier

i would like to see your unit test config and your spring config.
can u post pls.

thanks

-lp

On Fri, Nov 5, 2010 at 12:12 PM, Lucio Piccoli lucio.picc...@gmail.comwrote:

hi didier,

i did follow the google unit test doc.
But my issue is using the spring tx with JPA in unit test.
ii cant seem to get my entity manager bound to a tx.

if u have any ideas or spring config it would be most appreciated.

thanks
-lp

On Thu, Nov 4, 2010 at 11:17 PM, Didier Durand durand.did...@gmail.comwrote:

Hi Ip,

do you correctly initiate your local env for the datastore: see

http://code.google.com/appengine/docs/java/tools/localunittesting.html#Writing_Datastore_Tests

You should then get an active transaction when needed. Let me know if
needed: can provide you with my own code when needed

regards

didier

On Nov 4, 12:10 pm, lp lucio.picc...@gmail.com wrote:
how did u get your unit tests to run in tx?

i cant seem to get an active transaction.

i followed all the links in this thread and more.

any help appreciated

-lp

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Re: [appengine-java] about【PreparedQuery.countEnti ties()】 problem, how can I get the total count of a specif ic Query?

2010-11-08 Thread Yasuo Higa

Hi liqwei,

You can get the total count of a specific query as follows:

Query query = new Query(Book.getKind());
PreparedQuery pq = ds.prepare(query);
FetchOptions option = FetchOptions.Builder.withLimit(Integer.MAX_VALUE);
out.println(pq.countEntities(option));

Hope this helps,

Yasuo Higa

On Sun, Nov 7, 2010 at 11:02 AM, liqwei liq...@gmail.com wrote:
 case 【PreparedQuery.countEntities()】 is Deprecated。

 but how can I get the Total Count of a specific Query?

 the  【PreparedQuery.countEntities(FetchOptions fetchOptions) 】only
 return the count specificed by fetchOptions!

 ex.
 Query query = new Query(Book.getKind());  // there are 3 entities with
 Book kind in datastore zone
 PreparedQuery pq = ds.prepare(query);
 FetchOptions option = FetchOptions.Builder.withLimit(2);
 out.println(pq.countEntities());                 // the count I really
 want, but the method is Deprecated currently;
 out.println(pq.countEntities(option));        // the count only return
 2, but it should return 3 entity in this query;

 3ks!

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[appengine-java] Tasks SSL

2010-11-08 Thread Dom Derrien

Context:
- Tasks as defined in 
http://code.google.com/appengine/docs/java/taskqueue/overview.html
- Secured URLs as described in 
http://code.google.com/appengine/docs/java/config/webxml.html

In the following excerpts, you can see I want to be sure that only
administrators can access over SSL resources  in the /_admin folder.
This works fine when I access JSP page or call a servlet. However, the
automatic task execution fails continuously on production, which
generates a never ending task rescheduling...

- Sample task scheduling:
QueueFactory.getDefaultQueue().add(url(/
_admin/...).method(Method.GET));
- web.xml part:
security-constraint
web-resource-collection
url-pattern/_admin/*/url-pattern
/web-resource-collection
auth-constraint
role-nameadmin/role-name
/auth-constraint
user-data-constraint
transport-guaranteeCONFIDENTIAL/transport-guarantee
/user-data-constraint
/security-constraint

As tasks are issued server-side and consumed there without having
transited on the public Internet (I hope so), I don't think there's a
risk of having non encrypted task calls.

I've just created another path for my tasks entry points (/_tasks) and
the path is not covered by the SSL restriction. Is it the right way?
Or did I hit a defect?

Thanks,
A+, Dom

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Re: [appengine-java] GAE or EC2

I'm biased, naturally, but here's my piece:

They're both great, young platforms, and successful businesses have been
built on both Google App Engine as well as Amazon EC2. Amazon's lower level
access appeals to some, whereas Google App Engine's abstractions appeal to
the folks in this group.

Have you actually used EC2 before? If not, new accounts can sign up for a
free micro instance. You'll want to check this out before you make any
decisions. Since you're already looking at EC2, why not look at VPS
solutions? I personally prefer a provider such as Slicehost or Linode to EC2
for anything I can't currently do on Google App Engine.

--
Ikai Lan
Developer Programs Engineer, Google App Engine
Blogger: http://googleappengine.blogspot.com
Reddit: http://www.reddit.com/r/appengine
Twitter: http://twitter.com/app_engine

On Mon, Nov 8, 2010 at 5:59 PM, JY jy2...@gmail.com wrote:

I want to ask fellow GAE users whether you think GAE is good choice to
build real business on?
I have used GAE for some personal projects, and right now help a
friend on a tiny start up (but with big dream). The project is related
to social network - I am thinking of two options:
1, GAE
The benefits are obvious. However, it is also locking you inyou
don't have much control over it. If you are unhappy later, you will
have to redo the persistence layer and migrate data etc.
2, EC2
You have much more control, and if the start-up gets funding, it is
easy to migrate to dedicated hosting or even its own data center. The
down side is developer (me, and only me) will have to spend quite some
time to take care of the infrastructure (although I like this kind of
work...)

I think my biggest concern of GAE is over the quality of service, and
the data-store - if I go EC2, I probably will use a NoSQL solution
like MogoDb, or Cassandra. The development efforts might be similar -
all products are sort of young, hot, and limited.

Thanks.

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[appengine-java] Re: GAE or EC2

2010-11-08 Thread Starman

Having worked for a SaaS company with 500K users and +500M items in
its database, the cost of just managing your infrastructure are
enormous.

Recently, I have been working on two unrelated projects, but both of
pretty similar sizes. One on AWS, the other on GAE.

AWS is rented virtualized servers with good SaaS support (elastic load
balancing, etc). But nothing, I mean nothing beats a good PaaS offer
like GAE if:

1) you can fit your business domain into a schemaless, (almost) join-
less, really really hard to use with transactions datastore like Big
Table and
2) can deal with the current cold startups (if using Java) and the 30
seconds thread limit (but the Task Queue API pretty much solves that).

More so if you're a startup where money is tight. If you can just work
on features, press a button, refresh you browser and there it is, for
millions to use with automatic, unlimited scaling... that's priceless.
But beware, all is not easy on GAE and many pitfalls await. You need
to know what you are doing and be carefull.

Good luck with the startup!

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[appengine-java] Re: GAE or EC2

Hi JY,

I have used both: for a small company aiming at big applications, I
would definitely go GAE because it's PaaS: you don't have to deal with
the infrastructure which can become quite time consuming when your
application gets big if on EC2 (you have to update/patch your images,
take care of your scaling, etc.). It's probably not what you want to
spend time on at start with limited resource.

On the other side, GAE has of course limitations / restrictions: Java-
only, datastore specific architecture, etc.

To reassure you, (a) the code of GAE is open source (did not check if
100%) and (b) some people are trying to replicate the system in an
independent fashion to provide alternatives: check out the AppScale
project at 
http://googleappengine.blogspot.com/2010/10/research-project-appscale-at-university.html

regards
didier

On Nov 9, 2:59 am, JY jy2...@gmail.com wrote:
 I want to ask fellow GAE users whether you think GAE is good choice to
 build real business on?
 I have used GAE for some personal projects, and right now help a
 friend on a tiny start up (but with big dream). The project is related
 to social network - I am thinking of two options:
 1, GAE
 The benefits are obvious. However, it is also locking you inyou
 don't have much control over it. If you are unhappy later, you will
 have to redo the persistence layer and migrate data etc.
 2, EC2
 You have much more control, and if the start-up gets funding, it is
 easy to migrate to dedicated hosting or even its own data center. The
 down side is developer (me, and only me) will have to spend quite some
 time to take care of the infrastructure (although I like this kind of
 work...)

 I think my biggest concern of GAE is over the quality of service, and
 the data-store - if I go EC2, I probably will use a NoSQL solution
 like MogoDb, or Cassandra. The development efforts might be similar -
 all products are sort of young, hot, and limited.

 Thanks.

 JY

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[appengine-java] Re: GAE or EC2

2010-11-08 Thread JY

Thanks IKai and Starman, very good advice. I don't have problem with
big table or even limit of the data store since my project relies on
social graph so I will very likely take the de-normalized approach,
the other NoSQL solutions all have restrictions.

I guess I am mostly concerned about the stability, availability and
predictability. It is very disturbing when you show an empty screen
(my client side is iPhone) to your partner and then try to explain
that it failed because there has been no traffic to the project thus
GAE deallocated the server and everything will be fine once we have
users

JY
On Nov 8, 9:18 pm, Starman r...@arrova.ca wrote:
 Having worked for a SaaS company with 500K users and +500M items in
 its database, the cost of just managing your infrastructure are
 enormous.

 Recently, I have been working on two unrelated projects, but both of
 pretty similar sizes. One on AWS, the other on GAE.

 AWS is rented virtualized servers with good SaaS support (elastic load
 balancing, etc). But nothing, I mean nothing beats a good PaaS offer
 like GAE if:

 1) you can fit your business domain into a schemaless, (almost) join-
 less, really really hard to use with transactions datastore like Big
 Table and
 2) can deal with the current cold startups (if using Java) and the 30
 seconds thread limit (but the Task Queue API pretty much solves that).

 More so if you're a startup where money is tight. If you can just work
 on features, press a button, refresh you browser and there it is, for
 millions to use with automatic, unlimited scaling... that's priceless.
 But beware, all is not easy on GAE and many pitfalls await. You need
 to know what you are doing and be carefull.

 Good luck with the startup!

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[appengine-java] Re: GAE or EC2

2010-11-08 Thread JY

Thanks Didier, will check out AppScale.

On Nov 8, 10:32 pm, Didier Durand durand.did...@gmail.com wrote:
 Hi JY,

 I have used both: for a small company aiming at big applications, I
 would definitely go GAE because it's PaaS: you don't have to deal with
 the infrastructure which can become quite time consuming when your
 application gets big if on EC2 (you have to update/patch your images,
 take care of your scaling, etc.). It's probably not what you want to
 spend time on at start with limited resource.

 On the other side, GAE has of course limitations / restrictions: Java-
 only, datastore specific architecture, etc.

 To reassure you, (a) the code of GAE is open source (did not check if
 100%) and (b) some people are trying to replicate the system in an
 independent fashion to provide alternatives: check out the AppScale
 project 
 athttp://googleappengine.blogspot.com/2010/10/research-project-appscale...

 regards
 didier

 On Nov 9, 2:59 am, JY jy2...@gmail.com wrote:

  I want to ask fellow GAE users whether you think GAE is good choice to
  build real business on?
  I have used GAE for some personal projects, and right now help a
  friend on a tiny start up (but with big dream). The project is related
  to social network - I am thinking of two options:
  1, GAE
  The benefits are obvious. However, it is also locking you inyou
  don't have much control over it. If you are unhappy later, you will
  have to redo the persistence layer and migrate data etc.
  2, EC2
  You have much more control, and if the start-up gets funding, it is
  easy to migrate to dedicated hosting or even its own data center. The
  down side is developer (me, and only me) will have to spend quite some
  time to take care of the infrastructure (although I like this kind of
  work...)

  I think my biggest concern of GAE is over the quality of service, and
  the data-store - if I go EC2, I probably will use a NoSQL solution
  like MogoDb, or Cassandra. The development efforts might be similar -
  all products are sort of young, hot, and limited.

  Thanks.

  JY

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[appengine-java] Re: GAE or EC2

2010-11-08 Thread Vikas Hazrati

You might also want to check out a detailed comparison on technical
aspects here

http://thoughts.inphina.com/2010/11/01/comparing-google-app-engine-and-amazon-ec2-on-technology/

Regards | Vikas

On Nov 9, 9:32 am, Didier Durand durand.did...@gmail.com wrote:
Hi JY,

I have used both: for a small company aiming at big applications, I
would definitely go GAE because it's PaaS: you don't have to deal with
the infrastructure which can become quite time consuming when your
application gets big if on EC2 (you have to update/patch your images,
take care of your scaling, etc.). It's probably not what you want to
spend time on at start with limited resource.

On the other side, GAE has of course limitations / restrictions: Java-
only, datastore specific architecture, etc.

To reassure you, (a) the code of GAE is open source (did not check if
100%) and (b) some people are trying to replicate the system in an
independent fashion to provide alternatives: check out the AppScale
project
athttp://googleappengine.blogspot.com/2010/10/research-project-appscale...

regards
didier

On Nov 9, 2:59 am, JY jy2...@gmail.com wrote:

Thanks.

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[appengine-java] Re: No API environment is registered for this thread

Hi Eyal,

Independently of App Engine, how many seconds does it take to get an
answer to your request to Google Analytics (as given above) when you
run is as a Java application ? A servlet cannot last more than 30s
in App Engine, so knwoing your timing is important.
But, from my experience, you should get the answer in a matter of a
few seconds at most.

Let us know
didier

On Nov 8, 6:32 pm, Eyal twoworldsf...@gmail.com wrote:
 Just to complete the picture here's the initialization of the
 AnalyticsService:

             AnalyticsService as = new
 AnalyticsService(gaExportAPI_acctSample_v1.0);
             as.setUserCredentials(CLIENT_USERNAME, CLIENT_PASS);

 Thanks again,
 Eyal

 On Nov 8, 7:27 pm, Eyal twoworldsf...@gmail.com wrote:

  Hi Didier,

  Sure, here is an example method:

          public SiteBasicData getSiteBasicData(AnalyticsService as, Site 
  site,
  DateTime date) {
          SiteBasicData sd = new SiteBasicData();
          as.setConnectTimeout(1);
          as.setReadTimeout(1);
              DataFeed dataFeed = null;
              try {
                          DataQuery query = new DataQuery(new 
  URL(https://www.google.com/
  analytics/feeds/data));
                      DateTimeFormatter fmt = 
  DateTimeFormat.forPattern(-MM-
  dd);
                      query.setStartDate(date.toString(fmt));
                      query.setEndDate(date.toString(fmt));

  query.setMetrics(ga:visitors,ga:visits,ga:pageviews,ga:newVisits,ga:bounce 
  s,ga:timeOnSite);
                      query.setMaxResults(50);
                      query.setIds(site.getTableID());

                      dataFeed = as.getFeed(query.getUrl(), DataFeed.class);

                  DataEntry entry = dataFeed.getEntries().get(0);
                  DecimalFormat dfDouble = new DecimalFormat(.##);
                  DecimalFormat dfZero = new DecimalFormat(#);

                  int visits =
  Integer.parseInt(entry.stringValueOf(ga:visits));
                  int uniques =
  Integer.parseInt(entry.stringValueOf(ga:visitors));
                  int newVisits =
  Integer.parseInt(entry.stringValueOf(ga:newVisits));
                  int pageViews =
  Integer.parseInt(entry.stringValueOf(ga:pageviews));
                  int bounces =
  Integer.parseInt(entry.stringValueOf(ga:bounces));
                  int timeOnSite =
  Integer.parseInt(entry.stringValueOf(ga:timeOnSite));

                  sd.setSite(site);
                  sd.setDate(date);
                  sd.setVisitors(visits);
                  sd.setUniqueVisitors(uniques);
                  sd.setNewVisits(newVisits);
                  sd.setReturningVisits(visits-newVisits);
                  sd.setPageViews(pageViews);
                  sd.setUniquePageViews(getUniquePageViews(as, site, date));
                  sd.setBounces(bounces);
                  sd.setTimeOnSite(timeOnSite);

              } catch(Exception e) {
                  e.printStackTrace();
              }
              return sd;
          }

  Then I do the simple JDO to persist the sd object. But it doesn't even
  get there because I get the Timeout while fetching exception.

  Thanks!
  Eyal

  On Nov 8, 6:33 pm, Didier Durand durand.did...@gmail.com wrote:

   Hi Eyal,

   Can you detail (i.e post code samples) on what you do with Analytics
   (I need to be able to update the application's datastore with a feed
   from Analytics.) and how you want to do it.

   It's too vague as of now.

   regards

   didier

   On Nov 8, 4:41 pm, Eyal twoworldsf...@gmail.com wrote:

Hi Didier,

Thanks for your reply. Here's the problem, though: when I run it as a
web application I'm getting a timeout error. I've already posted this
issue on the Analytics dev group at (http://groups.google.com/group/
google-analytics-data-export-api/browse_thread/thread/
3f9956a25d718b59) but so far no one responded.

Do you have experience integrating analytics into app engine? I'm sure
it can be done but I've been trying to get it to work for 2 days now
with absolutely no progress. If you, or anyone can help me out I'm
sure my company will be willing to pay for this service.

Thanks,
Eyal

On Nov 8, 5:17 pm, Didier Durand durand.did...@gmail.com wrote:

 Eyal,

 Now it's clear = you MUST run the application as a Web Application to
 be able to activate the App Engine environment with the Datastore that
 you need for JDO.

 Then you MUST activate the local dev env for App Engine on your
 machine : see my previous answer with the link.

 If you don't do both actions above, it can not work as you wish.

 regards
 didier

 On Nov 8, 1:39 pm, Eyal twoworldsf...@gmail.com wrote:

  On my dev, when running As A Java Application. If I try to run it 
  as
  a Web Application I get a Timeout exception, because the Analytics
  feed takes too long to respond...

  Thanks for looking into this, Didier!

[appengine-java] Re: No API environment is registered for this thread

Hi Didier,

It takes about 8-9 seconds to return with a reply as a java
application for one query. I'm going to need a lot more than one
query, though, so some of my fetch requests will take much longer. But
in any case the timeout exception hits even before the 8-9 seconds,
and even when I increase the connect and read timeouts to 10 secs as
above.

Thanks,
Eyal

On Nov 9, 7:38 am, Didier Durand durand.did...@gmail.com wrote:
 Hi Eyal,

 Independently of App Engine, how many seconds does it take to get an
 answer to your request to Google Analytics (as given above) when you
 run is as a Java application ? A servlet cannot last more than 30s
 in App Engine, so knwoing your timing is important.
 But, from my experience, you should get the answer in a matter of a
 few seconds at most.

 Let us know
 didier

 On Nov 8, 6:32 pm, Eyal twoworldsf...@gmail.com wrote:







  Just to complete the picture here's the initialization of the
  AnalyticsService:

              AnalyticsService as = new
  AnalyticsService(gaExportAPI_acctSample_v1.0);
              as.setUserCredentials(CLIENT_USERNAME, CLIENT_PASS);

  Thanks again,
  Eyal

  On Nov 8, 7:27 pm, Eyal twoworldsf...@gmail.com wrote:

   Hi Didier,

   Sure, here is an example method:

           public SiteBasicData getSiteBasicData(AnalyticsService as, Site 
   site,
   DateTime date) {
           SiteBasicData sd = new SiteBasicData();
           as.setConnectTimeout(1);
           as.setReadTimeout(1);
               DataFeed dataFeed = null;
               try {
                           DataQuery query = new DataQuery(new 
   URL(https://www.google.com/
   analytics/feeds/data));
                       DateTimeFormatter fmt = 
   DateTimeFormat.forPattern(-MM-
   dd);
                       query.setStartDate(date.toString(fmt));
                       query.setEndDate(date.toString(fmt));

   query.setMetrics(ga:visitors,ga:visits,ga:pageviews,ga:newVisits,ga:bounce
s,ga:timeOnSite);
                       query.setMaxResults(50);
                       query.setIds(site.getTableID());

                       dataFeed = as.getFeed(query.getUrl(), DataFeed.class);

                   DataEntry entry = dataFeed.getEntries().get(0);
                   DecimalFormat dfDouble = new DecimalFormat(.##);
                   DecimalFormat dfZero = new DecimalFormat(#);

                   int visits =
   Integer.parseInt(entry.stringValueOf(ga:visits));
                   int uniques =
   Integer.parseInt(entry.stringValueOf(ga:visitors));
                   int newVisits =
   Integer.parseInt(entry.stringValueOf(ga:newVisits));
                   int pageViews =
   Integer.parseInt(entry.stringValueOf(ga:pageviews));
                   int bounces =
   Integer.parseInt(entry.stringValueOf(ga:bounces));
                   int timeOnSite =
   Integer.parseInt(entry.stringValueOf(ga:timeOnSite));

                   sd.setSite(site);
                   sd.setDate(date);
                   sd.setVisitors(visits);
                   sd.setUniqueVisitors(uniques);
                   sd.setNewVisits(newVisits);
                   sd.setReturningVisits(visits-newVisits);
                   sd.setPageViews(pageViews);
                   sd.setUniquePageViews(getUniquePageViews(as, site, date));
                   sd.setBounces(bounces);
                   sd.setTimeOnSite(timeOnSite);

               } catch(Exception e) {
                   e.printStackTrace();
               }
               return sd;
           }

   Then I do the simple JDO to persist the sd object. But it doesn't even
   get there because I get the Timeout while fetching exception.

   Thanks!
   Eyal

   On Nov 8, 6:33 pm, Didier Durand durand.did...@gmail.com wrote:

Hi Eyal,

Can you detail (i.e post code samples) on what you do with Analytics
(I need to be able to update the application's datastore with a feed
from Analytics.) and how you want to do it.

It's too vague as of now.

regards

didier

On Nov 8, 4:41 pm, Eyal twoworldsf...@gmail.com wrote:

 Hi Didier,

 Thanks for your reply. Here's the problem, though: when I run it as a
 web application I'm getting a timeout error. I've already posted this
 issue on the Analytics dev group at (http://groups.google.com/group/
 google-analytics-data-export-api/browse_thread/thread/
 3f9956a25d718b59) but so far no one responded.

 Do you have experience integrating analytics into app engine? I'm sure
 it can be done but I've been trying to get it to work for 2 days now
 with absolutely no progress. If you, or anyone can help me out I'm
 sure my company will be willing to pay for this service.

 Thanks,
 Eyal

 On Nov 8, 5:17 pm, Didier Durand durand.did...@gmail.com wrote:

  Eyal,

  Now it's clear = you MUST run the application as a Web Application 
  to
  be able to activate the App Engine environment with the Datastore

[appengine-java] Re: No API environment is registered for this thread