[appengine-java] Query for a Long id using getObjectById JDO
Hi all, I am a bit confused about how to retrieve an object using JDO. I am using GWT, and I am trying the new approach GWT 2.1 using DTO objects with request factory, which needs the entity objects to have their keys stored as Long. But as I read the documentation about keys, I have the following question. I want to retrieve an object, specifically a user, by searching him with his username. Before, using keys, I searched him using the getObjectById call. But now, when I have a Long id, what should I do? 1. Using a query, and have as a parameter the username 2. Using the getObjectById. The first is known, but is there an option to use the second, and pass as a parameter again the username as I do with KeyFactory. Because in documentation it says: If the class uses a key field that is an unencoded string ID (String) or numeric ID (Long), getObjectByID() can take the simple value as the key parameter: Employee e = pm.getObjectById(Employee.class, alfred.sm...@example.com); But what it means as a parameter in the Long situation, it needs the id number? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Simulating 500 error code
Is it possible in App engine Java to simulate on development mode (or production mode) the 500 internal server error ? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: 1.3.8 Console Logging Issue
I also have this problem. In addition, it seams that the new 1.3.8 version does not recognize the 1.3.7 local_db.bin development mode datastore (if i switch back it's ok) On Nov 3, 4:38 am, timzon jerome.bre...@gmail.com wrote: Dropping default log level (.level) to TRACE, INFO or FINEST doesn't fix the problem. log.info (with default INFO level) used to work before 1.3.8 upgrade and doesn't work after the upgrade. On Oct 29, 2:49 pm, Rajeev Dayal rda...@google.com wrote: Drop you launch configuration's log level down to TRACE. Do you see the messages now? On Fri, Oct 29, 2010 at 1:23 PM, John Bito j...@bobberinteractive.comwrote: Starred the issue: http://code.google.com/p/googleappengine/issues/detail?id=3969 -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2B unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Unable to start Dev Server : Failed startup of context com.google.apphosting.utils.jetty.DevAppEngineWebAppContext
Hi everyone,
Since one day I'm unable to start my app. She was running in Dev mode
with Eclipse plugin. But this morning, I got the following error who
start Jetty but give me only HTTP ERROR: 503 pages. I have just added
a jar and four classes but now, I have removed the jar and classes but
the error stay.
ATTENTION: Failed startup of context
com.google.apphosting.utils.jetty.devappenginewebappcont...@19f9d2{/,D:\MyApps\appenginetest\war}
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at
org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at
org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:185)
at
com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:147)
at
com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:219)
at
com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:164)
at
com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
at
com.google.appengine.tools.development.DevAppServerMain.init(DevAppServerMain.java:113)
at
com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)
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[appengine-java] JPA transaction not active in Spring unit test
hi all,
i am attempting to unit test my JPA code in a Spring unit test.
i read all the doco about gae unit tests.
i have this working in normal hibernate JPA with a specific tx
manager.
I cant see how the txManager is wired up.
however i get the following error
javax.persistence.TransactionRequiredException: This operation
requires a transaction yet it is not active
at
org.datanucleus.jpa.EntityManagerImpl.assertIsActive(EntityManagerImpl.java:
846)
at org.datanucleus.jpa.EntityManagerImpl.flush(EntityManagerImpl.java:
545)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.orm.jpa.ExtendedEntityManagerCreator
$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:
365)
at $Proxy29.flush(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
at java.lang.reflect.Method.invoke(Method.java:597)
the test is simple enuff
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { classpath:WEB-INF/entitymanager-
context.xml, classpath:WEB-INF/applicationContext.xml })
@TestExecutionListeners( { DependencyInjectionTestExecutionListener.class })
@TransactionConfiguration( defaultRollback=false,
transactionManager=transactionManager)
@Transactional
public abstract class MyTestCase {
private final LocalServiceTestHelper helper =
new LocalServiceTestHelper(new
LocalDatastoreServiceTestConfig());
@PersistenceContext
protected
EntityManager em;
@Test
public void findFriendsSimple() {
PositionUser user1 = new PositionUser();
user1.setFirstName(john);
user1.setLastName(smith);
user1.setGeohash(Geohash.encode(lat+=0.0001, lon));
em.persist(user1);
em.flush(); - throws here
PositionUser find = em.find(PositionUser.class,
user1.getKey());
assertEquals( john, find.getFirstName());
assertEquals( 2, find.getFriends().size() );
System.out.println(--running query now);
Query query = em.createNamedQuery(PositionUser.FIND_FRIENDS);
query.setParameter(userKey, user1.getKey());
List resultList = query.getResultList();
assertEquals( 2, resultList.size() );
}
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[appengine-java] AppWrench 1.3 released. Data store Refactorings, Improved Import/Export wizards, full JDO/JPA support
OnPositive Technologies is happy to announce final release of AppWrench 1.3, the first collection of powerful productivity tools created specifically for Google App Engine. AppWrench 1.3 introduces following majour improvement and features : * Powerfull Data store refactorings - allows to few click automation of most frequent batch operations with data store * Improved Import/Export wizards allows to import and export data in a few clicks * Improved JPA/JDO support, relation and blob visualization as well as other enchancements in our data store viewer functionality. * Multiple bug fixes and improvements in our AppEngine Profiler and Java Console tools. (Full change list is accessible at http://appwrench.onpositive.com/changes.page) The suite integrates into Eclipse 3.5+ and runs with the local App Engine development server for free. 7-day trial licenses are available to test the suite with the production servers. Requires App Engine SDK 1.2.6+. Learn more about AppWrench at http://appwrench.onpositive.com We are highly devoted to develop this product in a way the community wants, so please share your experience, ideas and suggestions on http://appwrench.zendesk.com Sincerely yours, Pavel Petrochenko, AppWrench development team. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Simulating 500 error code
def get(self) self.error(500) should work but never triwd myself Ice13ill napsal(a): Is it possible in App engine Java to simulate on development mode (or production mode) the 500 internal server error ? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Simulating 500 error code
i dont think that is java... On Wed, Nov 3, 2010 at 3:21 PM, Peter Ondruska peter.ondru...@gmail.comwrote: def get(self) self.error(500) should work but never triwd myself Ice13ill napsal(a): Is it possible in App engine Java to simulate on development mode (or production mode) the 500 internal server error ? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: 1.3.8 Console Logging Issue
No, I did not mean dropping it there - I meant changing it in the Web App Launch Configuration UI - edit your launch configuration (in Eclipse), and set the log level to TRACE. Does that help? On Tue, Nov 2, 2010 at 10:38 PM, timzon jerome.bre...@gmail.com wrote: Dropping default log level (.level) to TRACE, INFO or FINEST doesn't fix the problem. log.info (with default INFO level) used to work before 1.3.8 upgrade and doesn't work after the upgrade. On Oct 29, 2:49 pm, Rajeev Dayal rda...@google.com wrote: Drop you launch configuration's log level down to TRACE. Do you see the messages now? On Fri, Oct 29, 2010 at 1:23 PM, John Bito j...@bobberinteractive.com wrote: Starred the issue: http://code.google.com/p/googleappengine/issues/detail?id=3969 -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.comgoogle-appengine-java%2B unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] simple joins with multiple conditions
This page shows how to do simple joins http://gae-java-persistence.blogspot.com/2010/03/executing-simple-joins-across-owned.html However, is there a way to join the same child element twice to check for a child element that contains 2 specific items, like I'm trying to do here but failing/returning 0 results? javax.jdo.Query q5 = pm2.newQuery(select key from + Document.class.getName() + where + DocumentSearchKeyValues.contains(dskv) dskv.DocumentSearchKey_Value == 'key 3 - sample value' + DocumentSearchKeyValues.contains(dskv2) dskv2.DocumentSearchKey_Value == 'test key 2 - sample value' ); q5.declareVariables(DocumentSearchKeyValue.class.getName() + dskv; + DocumentSearchKeyValue.class.getName() + dskv2); ListKey q5_results = (ListKey) q5.execute(); -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Class not found in Eclipse
Unfortunately, GPE does not handle the case of dependent projects correctly. You can either manually jar up the classes from SimpleJavaProject, and drop that JAR into your war/WEB-INF/lib folder for the Web Application Project, or you can define the output folder for SimpleJavaProject to be equal to the output path for your Web Applicaton Project. On Tue, Oct 26, 2010 at 4:38 PM, tleroy cont...@arobass.com wrote: Hello everybody, I use the appengine eclipse plugin, I have created a 'Web Application Project' and a 'Simple Java Project' linked to it. When I launch the Web Application Project, classes from the Simple project are not found. Where I have to configure the classpath? I tried in the '.lauch' file but it doesn't work. Could you help me? Merci. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Cannot get JPA to work - Yes I'm bad
So I'm trying to set up a REST server and I want to use JPA for persistence. But when I my app I get this error: javax.persistence.PersistenceException: Provider error. Provider: org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider at javax.persistence.Persistence.createFactory(Persistence.java:176) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 112) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 66) Caused by: javax.jdo.JDOFatalUserException: No available StoreManager found for the datastore URL key . Please make sure you have all relevant plugins in the CLASSPATH (e.g datanucleus-rdbms?, datanucleus- db4o?), and consider setting the persistence property datanucleus.storeManagerType to the type of store you are using e.g rdbms, db4o I've checked and double checked the web-inf/lib and follow everything I saw in : http://code.google.com/intl/fr-FR/appengine/docs/java/datastore/usingjpa.html Anyone know what probably cause this issue? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Unable to start Dev Server : Failed startup of context com.google.apphosting.utils.jetty.DevAppEngineWebAppContext
HI
On Wed, Nov 3, 2010 at 5:11 PM, Blaise Gervais gervai...@gmail.com wrote:
Hi everyone,
Since one day I'm unable to start my app. She was running in Dev mode with
Eclipse plugin. But this morning, I got the following error who start Jetty
but give me only HTTP ERROR: 503 pages. I have just added a jar and four
classes but now, I have removed the jar and classes but the error stay.
ATTENTION: Failed startup of context
com.google.apphosting.utils.jetty.devappenginewebappcont...@19f9d2
{/,D:\MyApps\appenginetest\war}
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at
com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:185)
at
com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:147)
at
com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:219)
at
com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:164)
at
com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
at
com.google.appengine.tools.development.DevAppServerMain.init(DevAppServerMain.java:113)
at
com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)
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Chander Mohan
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[appengine-java] Re: Cannot get JPA to work - Yes I'm bad
I'm using JDO now. Everythings ok On Nov 3, 2:04 pm, Patrick luss...@gmail.com wrote: So I'm trying to set up a REST server and I want to use JPA for persistence. But when I my app I get this error: javax.persistence.PersistenceException: Provider error. Provider: org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider at javax.persistence.Persistence.createFactory(Persistence.java:176) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 112) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 66) Caused by: javax.jdo.JDOFatalUserException: No available StoreManager found for the datastore URL key . Please make sure you have all relevant plugins in the CLASSPATH (e.g datanucleus-rdbms?, datanucleus- db4o?), and consider setting the persistence property datanucleus.storeManagerType to the type of store you are using e.g rdbms, db4o I've checked and double checked the web-inf/lib and follow everything I saw in :http://code.google.com/intl/fr-FR/appengine/docs/java/datastore/using... Anyone know what probably cause this issue? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Google App Engine Java on Linux PowerPC
You should be able to run the App Engine for Java SDK. That's the promise of Java, right? Interoperability across platforms that can run the JVM? -- 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 Tue, Nov 2, 2010 at 10:56 AM, Nicholas nick.sm...@gmail.com wrote: I have a Mac Pro G5 PowerPC running Ubuntu Linux. Can I run app engine java SDK and do development or is it only for x86 systems? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Query for a Long id using getObjectById JDO
After doing some reading, I realized that in GAE datastore, an entity is stored using the key value and a key name or ID. The key name has to be a string and the ID is long. The key name can be created by the application and can be created like this as an example: Key key = KeyFactory.createKey(Employee.class.getSimpleName(), alfred.sm...@example.com); The ID can only be created by the datastore, so we have to leave it with a null value. Now, when we want to retrieve-fetch an object from datastore, we have two different situations. First, if we had created the entityid with key name, we can retrieve the object by recreating the key with the above syntax and then search for the object using Employee e = pm.getObjectById(Employee.class, k); But if we have used the numeric ID, we can' t look for it using the KeyFactory, as usually humans don' t search an object using numbers, but easily remembered strings. So we have to use a query. In my question, I have to use a query. If I am somewhere wrong, please inform me. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Google App Engine Java on Linux PowerPC
you can run app engine on power PC On Wed, Nov 3, 2010 at 11:30 PM, Ikai Lan (Google) ikai.l+gro...@google.comikai.l%2bgro...@google.com wrote: You should be able to run the App Engine for Java SDK. That's the promise of Java, right? Interoperability across platforms that can run the JVM? -- 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 Tue, Nov 2, 2010 at 10:56 AM, Nicholas nick.sm...@gmail.com wrote: I have a Mac Pro G5 PowerPC running Ubuntu Linux. Can I run app engine java SDK and do development or is it only for x86 systems? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: Query for a Long id using getObjectById JDO
Both following syntaxes are ok for JDO : Key key1 = KeyFactory.createKey(YourClass.class.getSimpleName(), 12345L); //using Long Key key2 = KeyFactory.createKey(YourClass.class.getSimpleName(), yourtextid); //using String It's up to you to define how you want your entities to be recorded : 1. Either you let the datastore generate a key for you when recording a new entity = its key will be based on a Long 2. Or you 'force' the key with your own stringID or your own longID From: giannisdag pascoua...@gmail.com Reply-To: google-appengine-java@googlegroups.com Date: Wed, 3 Nov 2010 11:24:10 -0700 (PDT) To: google-appengine-java@googlegroups.com Subject: [appengine-java] Re: Query for a Long id using getObjectById JDO After doing some reading, I realized that in GAE datastore, an entity is stored using the key value and a key name or ID. The key name has to be a string and the ID is long. The key name can be created by the application and can be created like this as an example: Key key = KeyFactory.createKey(Employee.class.getSimpleName(), alfred.sm...@example.com); The ID can only be created by the datastore, so we have to leave it with a null value. Now, when we want to retrieve-fetch an object from datastore, we have two different situations. First, if we had created the entityid with key name, we can retrieve the object by recreating the key with the above syntax and then search for the object using Employee e = pm.getObjectById(Employee.class, k); But if we have used the numeric ID, we can' t look for it using the KeyFactory, as usually humans don' t search an object using numbers, but easily remembered strings. So we have to use a query. In my question, I have to use a query. If I am somewhere wrong, please inform me. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Cannot get JPA to work - Yes I'm bad
Hi, You could also give a try to Objectify if you're looking for something much simpler than JPA/JDO although highly efficient. regards didier On Nov 3, 5:57 pm, Patrick luss...@gmail.com wrote: I'm using JDO now. Everythings ok On Nov 3, 2:04 pm, Patrick luss...@gmail.com wrote: So I'm trying to set up a REST server and I want to use JPA for persistence. But when I my app I get this error: javax.persistence.PersistenceException: Provider error. Provider: org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider at javax.persistence.Persistence.createFactory(Persistence.java:176) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 112) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java: 66) Caused by: javax.jdo.JDOFatalUserException: No available StoreManager found for the datastore URL key . Please make sure you have all relevant plugins in the CLASSPATH (e.g datanucleus-rdbms?, datanucleus- db4o?), and consider setting the persistence property datanucleus.storeManagerType to the type of store you are using e.g rdbms, db4o I've checked and double checked the web-inf/lib and follow everything I saw in :http://code.google.com/intl/fr-FR/appengine/docs/java/datastore/using... Anyone know what probably cause this issue? -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Mapper Blobstore bytes read limit
This behavior doesn't seem right. No, the entire blob should not be getting read. We'll look into this. Do you have any more details? Could tasks be getting retried? -- 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 Tue, Nov 2, 2010 at 9:42 AM, Cyrille Vincey crll...@gmail.com wrote: I've been testing Ikai's bulkload mapper (see url below) with a pretty big csv file (200 Mb). It works great, and I encourage most of you to consider implementing this for entity uploads. Yet, I do face one last issue with an unexpected quota : blobstore bytes read. This quota cannot be tuned via the billing settings, and it's not clear whether it limits the speed of my process or not when it's reached. See ? Yep, it's a lot of bytes read… Could someone confirm that the blob csv file is *NOT* fully fetched each time the mapper iterates on a new line ? (ikai's post) http://ikaisays.com/2010/08/11/using-the-app-engine-mapper-for-bulk-data-import / -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.comgoogle-appengine-java%2bunsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en. Capture d¹écran 2010-11-02 à 17 .17.25.png
[appengine-java] Re: Fwd: BlobstoreService not compatible with HTML5 multiple file upload?
Sorry to keep this thread alive but does anyone know of a work around for the HTML5 multi-file upload problem? To summarise HTML5 allows you to upload multiple files at the same time. Unfortunately on most browsers it gives all the files the same name. Therefore the app engine api MapString, BlobKey blobs = blobstoreService.getUploadedBlobs(req) only returns one blob key as all the others get overwritten due to the unique keys constraint of java.util.Map. For example is it possible to determine which blobs were uploaded by manually parsing the headers of HttpServletRequest? I wonder how blobstoreService.getUploadedBlobs(req) does it? I had a look and couldn't find anything obvious in the HttpServletRequest object that would allow me to link back to the blobs that were uploaded. I suppose I could add some nasty applet or flash upload tool to the page but I would rather not do that. Any ideas? Best wishes, Dan On Oct 24, 6:03 am, Mike! michael.d.en...@gmail.com wrote: It's my #1 request too, but GAE doesn't support any multiple file upload...I'm guessing that it's not far off though since the blobstore interface returns a Map of blobs Mike! On Oct 23, 3:55 pm, Dan Dubois uvico...@gmail.com wrote: Has anyone figured out a way around this problem yet? Best wishes, Dan -- Forwarded message -- From: Dan Dubois uvico...@gmail.com Date: Aug 12, 10:41 pm Subject: BlobstoreService not compatible withHTML5multiple file upload? To: Google App Engine for Java I see this issue has already been raised:http://code.google.com/p/ googleappengine/issues/detail?id=3351 On Aug 10, 1:12 pm, Dan Dubois uvico...@gmail.com wrote: It might be nice for blobstoreService.getUploadedBlobs(req) to return a com.google.common.collect.MultimapString, BlobKey but it is probably too late to change that method of the API. On Aug 10, 1:06 pm, Dan Dubois uvico...@gmail.com wrote: Dear All, I would like to upload multiple files to my Blobstore usingHTML5's multiple file upload feature. input type=file multiple name=myfiles However, on Safari at least, I imagine each file that is uploaded will be attributed with the same name myfiles. Therefore MapString, BlobKey blobs = blobstoreService.getUploadedBlobs(req); does not work as Map keys must be unique so only one Map.Entry will be in the Map as the others will get overwritten. I can see on my dev server that all my files are actually uploaded to the Datastore. Is there a way around this? I guess either Safari hasn't implemented multiple ofHTML5properly or the BlobstoreService API needs to be changed to cater for the new HTML5feature... Best wishes, Dan -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Install portal on Google App Engine
Hi, it is possible to install a portal like Liferay or Jetspeed on Google App Engine? If so, can someone give me a link to a tutorial etc.. Greetings, Robert -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: 500 Errors on blobstore upload, perhaps related to oauth?
After investigating further, things get more confusing. I guess the oauth stuff in the upload URL is as it should be, since disabling oauth in my app did not change the presence of the oauth stuff in the upload URL. After watching the exchange between my client and GAE app with fiddler, I realized that the 500 that was being returned was coming from my GAE code and not the blobservice, and it contained an exception that my GAE app produces when the blobstore calls the on- success URL that is supplied to the blobstoreService.createUploadUrl(). The exception is caused by the blobstoreService.getUploadedBlobs() call returning an empty map. What's confusing me is that evidently the blobstore is failing for some reason, and yet it is still calling the on-success URL within my app. Is this the expected behavior when a blobstore upload fails? It would be great to get some sort of meaningful error from the blobstore, instead of just having the failure passed on to my app in the form of an empty map. On Nov 2, 9:59 pm, tempy fay...@gmail.com wrote: Hello, I have yet to get the blobstore functioning correctly in my app. My code works in development, but not in production. I use the built-in oauth support and have an installed app connecting to the GAE app. The installed app requests an upload URL from an endpoint that is secured by oauth, and I was surprised to see that BlobStoreService.CreateUploadURL() produces a URL that has all the oauth stuff in it. Here is the URL it produced: http://MYAPPo.appspot.com/_ah/upload/?oauth_token=1%2FTRaFrr7-6m5... When my installed app then tried to POST to this URL, it gets a 500. The Blobstore then proceeds to call my GAE app with the URL I supplied to CreateUploadURL(), and passes along all the parameters that the client app sent to the Blobstore, but (as expected) without a Blobstore key. I don't see any blobs in the blob viewer. I wonder if the oauth code is somehow at fault here, but other than that I don't really know where to start diagnosing this. Thanks, Mike -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: Fwd: BlobstoreService not compatible with HTML5 multiple file upload?
Hi Dan, Just an idea: can't you change the file names (via javascript) on the browser before upload starts to make them all different ? regards didier On Nov 3, 9:00 pm, Dan Dubois uvico...@gmail.com wrote: Sorry to keep this thread alive but does anyone know of a work around for the HTML5 multi-file upload problem? To summarise HTML5 allows you to upload multiple files at the same time. Unfortunately on most browsers it gives all the files the same name. Therefore the app engine api MapString, BlobKey blobs = blobstoreService.getUploadedBlobs(req) only returns one blob key as all the others get overwritten due to the unique keys constraint of java.util.Map. For example is it possible to determine which blobs were uploaded by manually parsing the headers of HttpServletRequest? I wonder how blobstoreService.getUploadedBlobs(req) does it? I had a look and couldn't find anything obvious in the HttpServletRequest object that would allow me to link back to the blobs that were uploaded. I suppose I could add some nasty applet or flash upload tool to the page but I would rather not do that. Any ideas? Best wishes, Dan On Oct 24, 6:03 am, Mike! michael.d.en...@gmail.com wrote: It's my #1 request too, but GAE doesn't support any multiple file upload...I'm guessing that it's not far off though since the blobstore interface returns a Map of blobs Mike! On Oct 23, 3:55 pm, Dan Dubois uvico...@gmail.com wrote: Has anyone figured out a way around this problem yet? Best wishes, Dan -- Forwarded message -- From: Dan Dubois uvico...@gmail.com Date: Aug 12, 10:41 pm Subject: BlobstoreService not compatible withHTML5multiple file upload? To: Google App Engine for Java I see this issue has already been raised:http://code.google.com/p/ googleappengine/issues/detail?id=3351 On Aug 10, 1:12 pm, Dan Dubois uvico...@gmail.com wrote: It might be nice for blobstoreService.getUploadedBlobs(req) to return a com.google.common.collect.MultimapString, BlobKey but it is probably too late to change that method of the API. On Aug 10, 1:06 pm, Dan Dubois uvico...@gmail.com wrote: Dear All, I would like to upload multiple files to my Blobstore usingHTML5's multiple file upload feature. input type=file multiple name=myfiles However, on Safari at least, I imagine each file that is uploaded will be attributed with the same name myfiles. Therefore MapString, BlobKey blobs = blobstoreService.getUploadedBlobs(req); does not work as Map keys must be unique so only one Map.Entry will be in the Map as the others will get overwritten. I can see on my dev server that all my files are actually uploaded to the Datastore. Is there a way around this? I guess either Safari hasn't implemented multiple ofHTML5properly or the BlobstoreService API needs to be changed to cater for the new HTML5feature... Best wishes, Dan -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
