[appengine-java] BackEnd Names
Hi, This is the piece of code where i am trying to get the backend name, which i am using in GAE but its actually returning null. BackendService service = BackendServiceFactory.getBackendService(); String currentBackendName = service.getCurrentBackend(); System.out.println(The current backend name is+currentBackendName); Any idea about how to retrieve the backend names in GAE. regards, Suresh -- 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-java@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: Use of com.google.appengine.repackaged
Hi All, I need to use JSONObject in my project. When i import com.google.appengine.repackaged.org.json.JSONObject; giving error as Use of com.google.appengine.repackaged may result in your app breaking without warning I got this error after i upgrade to appengine 1.6.1 sdk. 1.6.0 works fine. Please help me on this. On Jan 3, 3:59 pm, Jerome jerome.mou...@gmail.com wrote: Hello Ramesh, As Ikai was suggesting above, change your import to: import org.apache.commons.codec.binary.Base64; The method name in this class are a bit different from the repacked Google class, but the mapping is fairly straight forward. Cheers, Jerome On Jan 3, 9:49 am, ramesh chiluverirame...@gmail.com wrote: Hi, How can i resolve this issue. I am getting same issue after upgrading to app engine1.6.1 Thanks On Dec 20 2011, 2:13 am, Ikai Lan (Google) ika...@google.com wrote: I usually just use the Apache Commons one: http://commons.apache.org/codec/apidocs/org/apache/commons/codec/bina... -- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Mon, Dec 19, 2011 at 11:03 AM, Carter jcmas...@gmail.com wrote: After upgrading to1.6.1, we get this message: Use of com.google.appengine.repackaged may result in your app breaking without warning for our use of: import com.google.appengine.repackaged.com.google.common.util.Base64; Is there a preferred Base64 encoder we can use instead? -- 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-java@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-java@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: Use of com.google.appengine.repackaged
Hello chiluveriramesh1 me too. i have to use com.google.appengine.repackaged.org.json.JSONObject. anyway, i just don't care and deploy it. it still work fine. 2012/1/4 ramesh chiluverirame...@gmail.com: Hi All, I need to use JSONObject in my project. When i import com.google.appengine.repackaged.org.json.JSONObject; giving error as Use of com.google.appengine.repackaged may result in your app breaking without warning I got this error after i upgrade to appengine 1.6.1 sdk. 1.6.0 works fine. Please help me on this. On Jan 3, 3:59 pm, Jerome jerome.mou...@gmail.com wrote: Hello Ramesh, As Ikai was suggesting above, change your import to: import org.apache.commons.codec.binary.Base64; The method name in this class are a bit different from the repacked Google class, but the mapping is fairly straight forward. Cheers, Jerome On Jan 3, 9:49 am, ramesh chiluverirame...@gmail.com wrote: Hi, How can i resolve this issue. I am getting same issue after upgrading to app engine1.6.1 Thanks On Dec 20 2011, 2:13 am, Ikai Lan (Google) ika...@google.com wrote: I usually just use the Apache Commons one: http://commons.apache.org/codec/apidocs/org/apache/commons/codec/bina... -- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Mon, Dec 19, 2011 at 11:03 AM, Carter jcmas...@gmail.com wrote: After upgrading to1.6.1, we get this message: Use of com.google.appengine.repackaged may result in your app breaking without warning for our use of: import com.google.appengine.repackaged.com.google.common.util.Base64; Is there a preferred Base64 encoder we can use instead? -- 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-java@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-java@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-java@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] BackEnd Names cant able to retreive back
Hi, This is the piece of code where i am trying to get the backend name, which i am using in GAE but its actually returning null. BackendService service = BackendServiceFactory.getBackendService(); String currentBackendName = service.getCurrentBackend(); System.out.println(The current backend name is+currentBackendName); Any idea about how to retrieve the backend names in GAE. regards, Suresh -- 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-java@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] Full Text Search Status?
Any news/updates? :( -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine-java/-/NcoX-BGLD2MJ. To post to this group, send email to google-appengine-java@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] Full Text Search Status?
In general we don't release ETAs on APIs, so I don't have anything new to announce at this time. Hope you've noticed that we've moved to monthly releases, so if everything goes to plan, likely in one of the next few releases (though probably not the next one). -- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Wed, Jan 4, 2012 at 3:29 AM, Jaroslav Záruba jaroslav.zar...@gmail.comwrote: Any news/updates? :( -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine-java/-/NcoX-BGLD2MJ. To post to this group, send email to google-appengine-java@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-java@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] java.lang.OutOfMemoryError: PermGen space
I am trying to start backend service using push task queue. Here's my
backend configuration
?xml version=1.0 encoding=UTF-8?
backends
backend name=zipcodebuilder
classB1/class
options
dynamictrue/dynamic
/options
/backend
/backends
and here's my code for adding task queue.
try{
Queue queue = QueueFactory.getDefaultQueue();
TaskOptions options = TaskOptions.Builder
.withUrl(/zipcodebuilder)
.method(TaskOptions.Method.POST)
.param(buildAll, buildAll.toString())
.param(buildDatastore,
buildDatastore.toString())
.param(size, String.valueOf(size));
options = options.header(Host,
BackendServiceFactory.getBackendService().getBackendAddress(zipcodebuilder));
queue.add(options); // - Here PermGen space runs out
}
catch (Exception e) {
logger.severe(Failed to add zipcodebuilder task into
task queue:
+ e);
}
java.lang.OutOfMemoryError: PermGen space
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at
com.google.appengine.tools.development.DevAppServerClassLoader.loadClass(DevAppServerClassLoader.java:
87)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
at java.lang.Class.privateGetPublicMethods(Class.java:2547)
at java.lang.Class.getMethods(Class.java:1410)
at com.zeroturnaround.javarebel.pM.makeClassPublicMethodCache(JRebel:
420)
at com.zeroturnaround.javarebel.pM.getClassPublicMethodCache(JRebel:
177)
at com.zeroturnaround.javarebel.pM.getMethods(JRebel:570)
at java.lang.Class.getMethods(Class.java)
at
com.google.appengine.tools.development.ApiProxyLocalImpl.getDispatchMethod(ApiProxyLocalImpl.java:
411)
at com.google.appengine.tools.development.ApiProxyLocalImpl.access
$400(ApiProxyLocalImpl.java:46)
at com.google.appengine.tools.development.ApiProxyLocalImpl
$AsyncApiCall.callInternal(ApiProxyLocalImpl.java:490)
at com.google.appengine.tools.development.ApiProxyLocalImpl
$AsyncApiCall.call(ApiProxyLocalImpl.java:452)
at com.google.appengine.tools.development.ApiProxyLocalImpl
$AsyncApiCall.call(ApiProxyLocalImpl.java:430)
at java.util.concurrent.Executors$PrivilegedCallable
$1.run(Executors.java:463)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.Executors
$PrivilegedCallable.call(Executors.java:460)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor
$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor
$Worker.run(ThreadPoolExecutor.java:908)
Has anybody encounter this problem?
--
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-java@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] Conversion API - Adding Assets Example Wrongly Documented
Hi All, I am trying to produce pdf reports out of my html String as mentioned in below tutorial: http://code.google.com/appengine/docs/java/conversion/overview.html code // Create a conversion request from HTML to PNG. Asset asset = new Asset( text/html, bsome data/b.getBytes(), testfile.html); Document document = new Document(asset); /code My HTML String has few pictures to be embedded. Thus, I am trying Additional Functions (Adding Assets) example to add images as sub asset. But, example mentioned in tutorial is wrong. I am not able to add image as sub-asset in my main html string. There is no java api mentioned for the same! Has someone done this earlier using Java? (Example in python is correctly described) Cheers, Raj -- 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-java@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: JPA Manual Transaction Retry
I'm having the same problem...anyone know how to manually retry a transaction when using JPA on GAE? On Dec 30 2011, 9:36 pm, SaddleEDH saddle...@gmail.com wrote: Hi, I have a case where I want to manually retry a transaction in the case of failure...very similar to the example given on the java transaction page showing usage of the low level api...I have not been able to get this to work using JPA...it will never throw an exception when another user has changed the same entity group. I switched my code over to use the low level api and this works (basically I do just what is shown on the transaction page). While it works, the low level api has it disadvantages...one big one being that it can't update multiple entity groups in a single transaction...but maybe there is a way to do that that I am not aware of. Anyway, has anyone tried manual transaction retries with JPA? If so, any hints you can give me? Thanks! Jeff -- 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-java@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: JDO second level cache getting in the way...
Perhaps I am thinking of JDO and JPA as being more similar than I should, but I've found that GAE doesn't really want you to think of your datastore in an OO manner either. It's a collection of documents and indexes. JDO (and JPA) encourage you to model your objects as you would in any sane system and then let you forget about the mapping to the underlying datastore as much as possible. That's awesome for most environments. But IMHO (and admittedly with only a few months of time trying to wrap my head around a JDO application I inherited, yes with the old plugin) this is not the best way to work with the GAE Datastore. I'm sure it works fine for many projects, but traversing large trees of objects one at a time is very costly in terms of performance. I've found that it's much more efficient to store the data you need from related objects in the parent directly or in another record using partial decomposition. That also makes using the memcache service to cache larger result sets much easier, and you don't wind up needing a lot of indexes to perform complex queries since you can search on records that have been created ahead of time. Yes, you can do this with JDO, but in my opinion JDO creates a layer of abstraction that you don't need and one that gets in the way. On Jan 3, 2:52 am, datanucleus andy_jeffer...@yahoo.com wrote: JDO was designed for relational data models, GAE was designed for the opposite. Please check your facts, perhaps by consulting people who actually designed the JDO standard, or by actually reading the JDO spec. It was designed to be datastore-agnostic. JPA on the other hand was not, with RDBMS syntax leaking through the query language. Use of version 2 of the GAE plugin (included as optional in 1.6.1 SDK) is recommended, fixing many shortcomings in the design of the original plugin -- 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-java@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: JDO second level cache getting in the way...
Many thanks, Rick, for bringing to my attention these apparently useful
alternatives! I hopefully will find time to try them.
Thanks,
Peter
On Mon, Jan 2, 2012 at 9:00 PM, Rick Mangi r...@broadcastr.com wrote:
Do yourself a big favor and run away from JDO + GAE screaming as fast
as you can. You're much better off using one of the thin wrappers
around the AppEngine Datastore like Objectify or Twig along with the
built in Memcache service.
JDO was designed for relational data models, GAE was designed for the
opposite. They don't play well together. You *can* get them to work,
and many have, but I have yet to find anyone who enjoyed the
experience.
best,
Rick
On Jan 1, 7:07 pm, The night manager peter.dunay.kov...@gmail.com
wrote:
Hi,
I am new to both GAE and JDO. I would be grateful if someone could
provide
guidance on a behavior I find rather counter-intuitive. In the following
code, I have to call pm.evictAll() to successfully/persistently change
properties (labels) on a freshly persisted object (bookmark):
PersistenceManager pm = PMF.get().getPersistenceManager();
try {
Bookmark bookmark = new Bookmark(url);
bookmark = pm.makePersistent(bookmark);
pm.evictAll();
Key k = bookmark.getKey();
bookmark = pm.getObjectById(Bookmark.class, k);
bookmark.addLabels(labels);
} finally {
pm.close();
}
I'd naively expect the above code to persistently adding labels to
bookmarkseven without calling
pm.evictAll()and with explicitly (re-)fetching the bookmark object. I'd
expect JDO to notice that the Bookmark instance has been dirtied and
pm.close() to persist the changes to the cached object.
I find it also counter-intuitive that pm.evict(bookmark) doesn't work --
the entire cache needs to be cleared for new labels on bookmark to get
persisted. (Even though pm.evict(Object) appears to expect a *
persistent-clean* object, which, in turn, appears to assume being in a
transaction...)
Any pointers on the reasons of this behavior will be gratefully
appreciated.
Peter
--
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-java@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-java@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: JDO second level cache getting in the way...
Many thanks, Andy, for the clarification. I am still not sure which of the following statements describes the best the behaviour I observe: it is (a) the intended behaviour, (b) not intended, just happens to be like this or (c) a bug. After regarding cache level: reading fleetingly through the JDO specification (3.0), nothing sticks out to indicate that the JDO implementation is supposed to manage any other cache than the second level cache. (void evictAll() itself is listed under the *11.8 Second-level cache management* section.) I am not sure what Level 1 cache may be...is it, perhaps, an artifact of the datanucleus implementation? Thanks Peter On Wed, Jan 4, 2012 at 6:04 AM, datanucleus andy_jeffer...@yahoo.comwrote: As for the problem of the original poster, evictAll is for the *Level1* cache (which will not be of any use since you aren't using transactions there). Calling addLabels is queued (doesn't go straight to the DB in the version you use there), and you don't then start a transaction. Simple thing to do to get around it would be pm.currentTransaction().begin(); pm.currentTransaction().commit(); after the addLabels. You can help yourself by looking at the log, since it explains way more than that (at DEBUG level). -- 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-java@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-java@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] Anybody else unable to use com.google.api.services.plus? Suggestions please!
Is that file included in google-api-java-client-1.6.0-beta.zip? I see this: dependencies google-http-client-extensions-android2-1.6.0-beta.jar google-api-client-1.6.0-beta.jar google-http-client-extensions-android2-1.6.0-beta-sources.jar google-api-client-1.6.0-beta-sources.jar google-http-client-extensions-android3-1.6.0-beta.jar google-api-client-extensions-1.6.0-beta.jar google-http-client-extensions-android3-1.6.0-beta-sources.jar google-api-client-extensions-1.6.0-beta-sources.jar google-oauth-client-1.6.0-beta.jar google-api-client-extensions-android2-1.6.0-beta.jar google-oauth-client-1.6.0-beta-sources.jar google-api-client-extensions-android2-1.6.0-beta-sources.jar google-oauth-client-extensions-1.6.0-beta.jar google-http-client-1.6.0-beta.jar google-oauth-client-extensions-1.6.0-beta-sources.jar google-http-client-1.6.0-beta-sources.jar LICENSE google-http-client-extensions-1.6.0-beta.jar readme.html google-http-client-extensions-1.6.0-beta-sources.jar I dug out the GAE starter project for Google+ ( http://code.google.com/p/google-plus-java-starter/source/checkout) and did this: jar xvf google-api-services-plus-v1-1.2.4-beta-sources.jar created: com/ created: com/google/ created: com/google/api/ created: com/google/api/services/ created: com/google/api/services/plus/ created: com/google/api/services/plus/model/ inflated: com/google/api/services/plus/model/ActivityObjectResharers.java inflated: com/google/api/services/plus/model/Acl.java inflated: com/google/api/services/plus/model/PeopleFeed.java inflated: com/google/api/services/plus/model/Comment.java inflated: com/google/api/services/plus/model/ActivityActorImage.java inflated: com/google/api/services/plus/model/CommentInReplyTo.java inflated: com/google/api/services/plus/model/ActivityObjectPlusoners.java inflated: com/google/api/services/plus/model/PersonOrganizations.java inflated: com/google/api/services/plus/model/CommentFeed.java inflated: com/google/api/services/plus/model/CommentActor.java inflated: com/google/api/services/plus/model/ActivityObjectReplies.java inflated: com/google/api/services/plus/model/CommentObject.java inflated: com/google/api/services/plus/model/PlusAclentryResource.java inflated: com/google/api/services/plus/model/PersonName.java inflated: com/google/api/services/plus/model/ActivityObjectAttachmentsFullImage.java inflated: com/google/api/services/plus/model/PersonUrls.java inflated: com/google/api/services/plus/model/PersonEmails.java inflated: com/google/api/services/plus/model/ActivityProvider.java inflated: com/google/api/services/plus/model/ActivityObjectAttachments.java inflated: com/google/api/services/plus/model/ActivityObjectAttachmentsEmbed.java inflated: com/google/api/services/plus/model/PersonPlacesLived.java inflated: com/google/api/services/plus/model/Activity.java inflated: com/google/api/services/plus/model/ActivityObjectActor.java inflated: com/google/api/services/plus/model/ActivityObjectAttachmentsImage.java inflated: com/google/api/services/plus/model/ActivityFeed.java inflated: com/google/api/services/plus/model/ActivityObjectActorImage.java inflated: com/google/api/services/plus/model/CommentActorImage.java inflated: com/google/api/services/plus/model/ActivityActor.java inflated: com/google/api/services/plus/model/PersonImage.java inflated: com/google/api/services/plus/model/ActivityObject.java inflated: com/google/api/services/plus/model/Person.java inflated: com/google/api/services/plus/Plus.java inflated: com/google/api/services/plus/ApiClient.java It's an older version, but it looks like it's defined there. Where did you get the 1.3.0 version from? It could have been mispackaged. -- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Sat, Dec 31, 2011 at 1:24 AM, Jon mrjonandr...@gmail.com wrote: Anybody got any ideas why I'm getting class def not found errors when trying to use com.google.api.services.plus? I'm using the google-api-services-plus-v1-1.3.0-beta.jar ...Which is included in the google-api-java-client-1.6.0-beta.zip. All the other classes from that zip seem to build ok. My project is a non Maven project btw. Uncaught exception from servlet java.lang.NoClassDefFoundError: com/google/api/services/plus/Plus Maybe I'm missing some dependencies or maybe app engine is sandboxing it as it compiles fine? Any suggestions greatly appreciated! -- You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine-java/-/G0-Ks_v_CuwJ. To post to this group, send email to google-appengine-java@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
[appengine-java] Re: JDO second level cache getting in the way...
@Rick, JDO doesn't encourage you to do anything, nor impose it. Perhaps its just that some will, upon using it, think in a particular way because they used a similar API before, and they're used to their good old RDBMS handling things for them so assume the same is true ... and it isn't as you say. Doesn't mean they can't bundle things together with JDO to minimise query impact also. @Peter, You observe behaviour in a very old version of software, and nontransactional operations in that version did things differently (though still comparable to the likes of Hibernate). The v2 version of Googles plugin makes use of recent software and all nontransactional persists/deletes are atomic. Obviously you could just put things in a transaction and you'd be fine too. Read about caches here http://www.datanucleus.org/products/accessplatform_3_0/jdo/cache.html -- 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-java@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] DataStoreFactory and KeyFactory
Hi All, Is we need any additional lib to be included in the classpath to use the DataStoreFactory and KeyFactory in GAE? I am trying to use the both but it fires an exception like this java.lang.NoClassDefFoundError: com/google/appengine/api/datastore/ KeyFactory Regards, Suresh -- 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-java@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] File content getting truncated while uploading the same in blob store
Hi,
I am using experimental version of blob store API, to upload the file
retrieved as byte[] through a web service.
Following is the code I am using to upload the byte[] to blob store.
public BlobKey writeFileToBlobStore(String mimeType,byte[]
fileContent) {
// Get a file service
FileService fileService = FileServiceFactory.getFileService();
AppEngineFile file = null;
try {
file = fileService.createNewBlobFile(mimeType);
boolean lock = true;
FileWriteChannel writeChannel = null;
if(fileContent == null){
LOGGER.log(Level.INFO,File Content is null...);
} else {
writeChannel = fileService.openWriteChannel(file, lock);
writeChannel.write(ByteBuffer.wrap(fileContent));
writeChannel.closeFinally();
}
} catch (IOException e) {
LOGGER.log(Level.SEVERE,e.getMessage(),e);
}
return fileService.getBlobKey(file);
}
Using the code above the file gets uploaded successfully without any
exception to blobstore.
But strangely the size of file is lesser that the one which was
actually sent across through web service. And hence it gives error
while opening the file.
I have experienced this thing while uploading the ms office files i.e.
word doc and excel file.
If I try uploading some text file with larger text then the text file
gets displayed,but the content at the end is truncated.
The size of files I tried uploading were upto 450 kb (i.e. less then
32 MB restriction given by blob store API).
Kindly help me out in the same and let me know if anything is missing
out in the code, or it is some restriction of the experimental version
of the API?
I am in need of getting this work very urgently, so any help would be
highly appreciated.
Thanks in advance,
Nirzari
--
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-java@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] Problem with Backend service development on local env
As I reported in my previous post: https://groups.google.com/group/google-appengine-java/browse_thread/thread/3486790b7f5fd061, I am having this PermGen issue consistently now. I think that it's really related to local dev environment support for Backend service. Please take a look at following stacktrace. It originated from BackendServersFilter. If I disabled Backend Service on my local dev, I don't have PermGen issue. java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java: 141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: 176) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.codehaus.jackson.util.BufferRecycler.init(BufferRecycler.java: 48) at org.codehaus.jackson.JsonFactory._getBufferRecycler(JsonFactory.java: 601) at org.codehaus.jackson.JsonFactory._createContext(JsonFactory.java: 532) at org.codehaus.jackson.JsonFactory.createJsonGenerator(JsonFactory.java: 458) at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.writeInternal(MappingJacksonHttpMessageConverter.java: 148) at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java: 181) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter $ServletHandlerMethodInvoker.writeWithMessageConverters(AnnotationMethodHandlerAdapter.java: 975) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter $ServletHandlerMethodInvoker.handleResponseBody(AnnotationMethodHandlerAdapter.java: 933) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter $ServletHandlerMethodInvoker.getModelAndView(AnnotationMethodHandlerAdapter.java: 882) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java: 428) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java: 414) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java: 790) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java: 719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java: 644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java: 549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1166) at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java: 97) Jan 5, 2012 2:32:18 AM com.google.apphosting.utils.jetty.JettyLogger warn WARNING: /saveItem java.lang.OutOfMemoryError: PermGen space at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java: 141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: 176) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at com.google.apphosting.api.DatastorePb $PutResponse.clinit(DatastorePb.java:11932) at com.google.appengine.api.datastore.AsyncDatastoreServiceImpl.doBatchPutBySize(AsyncDatastoreServiceImpl.java: 523) at com.google.appengine.api.datastore.AsyncDatastoreServiceImpl.put(AsyncDatastoreServiceImpl.java: 466) at
