Re: [appengine-java] Re: After how much time of no traffic does GAE shut-down the instance
my GAE app too shutdown every tow minutes when no request! so when my app init that is terrible, because spring init need 15s! so my answer is: create a cron:every one minutes to run once,It's work very good!(every tow minutes don't keep my app online, It's still shutdown!) -- 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] Eclipse plugin failure after log4j added to the classpath (WEB-INF/lib)
*Check your Java Build Path of GAE App!* notice that:add your log4j lib into your app build path 2010/1/11 杨浩 > I have the slf4j + log4j in my GAE app, it's work fine! > war/WEB-INF/lib/slf4j-log4j12-1.5.10.jar > war/WEB-INF/lib/log4j-1.2.15.jar > you can try version 1.2.15 of log4j! > ^ ^ > -- 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] Eclipse plugin failure after log4j added to the classpath (WEB-INF/lib)
I have the slf4j + log4j in my GAE app, it's work fine! war/WEB-INF/lib/slf4j-log4j12-1.5.10.jar war/WEB-INF/lib/log4j-1.2.15.jar you can try version 1.2.15 of log4j! ^ ^ -- 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: Task Queue problems
在中国appspot的https无法正常工作，因为gfw屏蔽了这部分，你寻找一个https代理，然后再测试应该就没有问题了！ -- 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: App instance recycling and response times - is there solution?
create a cron:every one minutes to run for keep your app online in the GAE! I try it,and it is work very good! -- 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: App instance recycling and response times - is there solution?
治本只能等GAE的升级了，这样确实只能保证你的应用不会因为两分钟没有请求被关闭！ 不知道GAE收费版本是不是没有这个问题 2010/1/13 yjun hu > 治标不治本 > > On Wed, Jan 13, 2010 at 1:24 PM, 杨浩 wrote: > >> create a cron:every one minutes to run for keep your app online in the >> GAE! >> I try it,and it is work very good! >> >> > -- > dream or truth > > -- 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: Task Queue problems
代理 支持ssl： proxy.kerkgroep-hopjestad.com 3128 jwe219.internetdsl.tpnet.pl 3128 webmail.mwit.ac.th 80 我一般用第一个，他不是很稳定！ 2010/1/13 yjun hu > which proxy are u using now? > > 2010/1/12 杨浩 > >> 在中国appspot的https无法正常工作，因为gfw屏蔽了这部分，你寻找一个https代理，然后再测试应该就没有问题了！ >> > > > > -- > dream or truth > > -- 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: After how much time of no traffic does GAE shut-down the instance
the other talk about your problem!<https://groups.google.com/group/google-appengine-java/msg/2c425aa60b091f5d?dmode=print> GROUPS Title: App instance recycling and response times - is there solution? <https://groups.google.com/group/google-appengine-java/browse_thread/thread/bd5110b72b852e15/9f751301a9fb943c?q=App+instance+recycling+and+response+times+-+is+there+solution#9f751301a9fb943c> 2010/1/15 Ikai L (Google) > Hey everybody, > > 2 minutes is EXTREMELY aggressive. If you have evidence that your app is > being cycled out this quickly, can you let us know your app ID? There may be > something going on with your application. Our numbers indicate that even if > you are getting a minute amount of traffic, you shouldn't not be cycled out. > > In general we discourage using cron to ping your application. Cold startup > time is a very high priority for us. > > 2010/1/10 杨浩 > >> my GAE app too shutdown every tow minutes when no request! >> so when my app init that is terrible, because spring init need 15s! >> so my answer is: >> create a cron:every one minutes to run once,It's work very good!(every tow >> minutes don't keep my app online, It's still shutdown!) >> > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > -- 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: the inappropriate encoding occured when store chinese characters to datastore
In developer server:_ah/admin watch the datastore viewer is not encode utf8,so see ??? but in GAE server it's good! -- 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] java.security.AccessControlException: access denied java.net.NetPermission specifyStreamHandler
It's not enough information! Show the full stack trace,please! 2010/1/30 Andreas Blomqvist > Hi all > > I get this error: > > *java.security.AccessControlException: access denied > java.net.NetPermission specifyStreamHandler* > > when trying to connect to my GAE server. Anyone know how to grant > permissions in GAE? > > thanks > -- 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] AppCfg error
check your gae settings in the ant build file! Good luck! This is my gae set: #GAE setting gae.sdk.dir=/prog/eclipse/gae/eclipse/plugins/com.google.appengine.eclipse.sdkbundle.1.3.0_1.3.0.v200912141120/appengine-java-sdk-1.3.0 2010/1/30 Andreas Blomqvist > Hi > > I get this error when I try and deply to GAE. > > usage: dirname path > Exception in thread "main" java.lang.NoClassDefFoundError: > com/google/appengine/tools/admin/AppCfg > Caused by: java.lang.ClassNotFoundException: > com.google.appengine.tools.admin.AppCfg > at java.net.URLClassLoader$1.run(URLClassLoader.java:200) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:188) > at java.lang.ClassLoader.loadClass(ClassLoader.java:315) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330) > at java.lang.ClassLoader.loadClass(ClassLoader.java:250) > at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) > > Just installed the 1.3 SDK, and then this error began. Any thoughts? > -- 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] AppCfg error
after gae set,this is a e.x: 开始更新GAE... -- 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] java.security.AccessControlException: access denied java.net.NetPermission specifyStreamHandler
tware.htmlunit.WebClient.(WebClient.java:161) > [java] ... 29 more > [java] Jan 30, 2010 11:38:45 AM > com.google.apphosting.utils.jetty.JettyLogger warn > [java] WARNING: Nested in java.lang.ExceptionInInitializerError: > [java] java.security.AccessControlException: access denied > (java.net.NetPermission specifyStreamHandler) > [java] at > java.security.AccessControlContext.checkPermission(AccessControlContext.java:323) > [java] at > java.security.AccessController.checkPermission(AccessController.java:546) > [java] at > java.lang.SecurityManager.checkPermission(SecurityManager.java:532) > [java] at > com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:151) > [java] at java.net.URL.checkSpecifyHandler(URL.java:629) > [java] at java.net.URL.(URL.java:501) > [java] at > com.gargoylesoftware.htmlunit.util.UrlUtils.toUrlUnsafe(UrlUtils.java:91) > [java] at > com.gargoylesoftware.htmlunit.util.UrlUtils.toUrlSafe(UrlUtils.java:62) > [java] at > com.gargoylesoftware.htmlunit.WebClient.(WebClient.java:161) > [java] at > com.onecoder.fs.FSServlet.processRequest(FSServlet.java:93) > [java] at com.onecoder.fs.FSServlet.doGet(FSServlet.java:257) > [java] at > javax.servlet.http.HttpServlet.service(HttpServlet.java:693) > [java] at > javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > [java] at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) > [java] at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) > [java] at > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:51) > [java] at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > [java] at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) > [java] at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > [java] at > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:121) > [java] at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) > [java] at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) > [java] at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > [java] at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) > [java] at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) > [java] at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) > [java] at > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70) > [java] at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) > [java] at > com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:352) > [java] at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) > [java] at org.mortbay.jetty.Server.handle(Server.java:313) > [java] at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) > [java] at > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) > [java] at > org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) > [java] at > org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) > [java] at > org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > [java] at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) > [java] at > org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442) > > On 30 January 2010 12:40, 杨浩 wrote: > >> It's not enough information! >> Show the full stack trace,please! >> >> 2010/1/30 Andreas Blomqvist >> >> Hi all >>> >>> I get this error: >>> >>> *java.security.AccessControlException: access denied >>> java.net.NetPermission specifyStreamHandler* >>> >>> when trying to connect to my GAE server. Anyone know how to grant >>> permissions in GAE? >>&
Re: [appengine-java] Log4j in production GAE
I use slf4j! use slf4j-log4j when development! use slf4j-jdk log when GAE Server!(change slf4j-log4j to slf4j-jdk-log before GAE appcfg update war) 2010/2/2 Alex > Hello, > > Has anyone tried to use Log4j in production GAE? Is it supported? > > According to Java GAE docs, only java.util.logging is fully supported. > See http://code.google.com/appengine/docs/java/runtime.html#Logging > > [...] > Any logging framework (such as log4j) that logs to the output or > error streams will work. However, for more fine-grained control of the > Admin Console's log level display, the logging framework must use a > java.util.logging adapter. > [...] > > On the other hand, I see that log4j.properties is included into every > project created by GAE Eclipse plugin. > > I tried Log4j in a test application and Lo4j is working fine in > development environment. But it doesn't (just does nothing) when I > deploy my test application into live GAE server. > > Thanks in advance for any info, > Alex > -- 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: Google Plugin for Eclipse 1.3 plans
Where's the lastest plugin update sites for GAE Plugin? I will to test it! 2010/2/6 Philippe Marschall > Sounds like a good start. Ideally the maven eclipse plugin [1] could > be configured to automatically generate the configuration for the > Google Plugin and M2Eclipse [2] picking that up as well. Also an > archetype would help quick starting. I assume you're aware that you > get the most benefit out of that only when there are up to date Maven > artifacts wit good metadata in a publicly available repo, preferably > Maven central. > > [1] http://maven.apache.org/eclipse-plugin.html > [2] http://m2eclipse.sonatype.org/ > > Cheers > Philippe > -- 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] Error; Transaction is not active.
First it 's work ok!
but after tx.commit() the transaction is complete,so you must call
tx.begin() to start a transaction before tx.commit()!
Or invoke the tx.commit out of the while block!
I'm sorray for my English!
2010/2/10 Acerezo
>
> Hello all, I can´t delete records of a table
>
> I'm using this code:
>
> PersistenceManager pm =
> PersistenceManagerHelper.getPersistenceManager();
>
> Transaction tx = pm.currentTransaction();
> tx.begin();
> Extent ex = pm.getExtent(Robot.class, true);
> Iterator iter = ex.iterator();
> while (iter.hasNext())
> {
> Robot obj = (Robot)iter.next();
> pm.deletePersistent(obj);
> tx.commit();
> }
>
> And always delete only two records after I get this message in the
> log:
>
> Transaction is not active. You either need to define a transaction
> around this, or run your PersistenceManagerFactory with
> 'NontransactionalRead' and 'NontransactionalWrite' set to 'true'
>
>
> Anyone can help me, please?
>
> Thanks.
>
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Re: [appengine-java] Error; Transaction is not active.
Yes!
2010/2/10 Andrés Cerezo
> I don´t understand very well I think you are telling me:
>
> Transaction tx = pm.currentTransaction();
> // tx.begin(); old
> Extent ex = pm.getExtent(Robot.class, true);
> Iterator iter = ex.iterator();
> while (iter.hasNext())
> {
> tx.begin(); // new
> Robot obj = (Robot)iter.next();
> pm.deletePersistent(obj);
> tx.commit();
> }
>
> isn´t?
>
> 2010/2/10 杨浩 :
> > First it 's work ok!
> > but after tx.commit() the transaction is complete,so you must call
> > tx.begin() to start a transaction before tx.commit()!
> >
> > Or invoke the tx.commit out of the while block!
> >
> > I'm sorray for my English!
> >
> > 2010/2/10 Acerezo
> >>
> >> Hello all, I can´t delete records of a table
> >>
> >> I'm using this code:
> >>
> >> PersistenceManager pm =
> >> PersistenceManagerHelper.getPersistenceManager();
> >>
> >> Transaction tx = pm.currentTransaction();
> >> tx.begin();
> >> Extent ex = pm.getExtent(Robot.class, true);
> >> Iterator iter = ex.iterator();
> >> while (iter.hasNext())
> >> {
> >> Robot obj = (Robot)iter.next();
> >> pm.deletePersistent(obj);
> >> tx.commit();
> >> }
> >>
> >> And always delete only two records after I get this message in the
> >> log:
> >>
> >> Transaction is not active. You either need to define a transaction
> >> around this, or run your PersistenceManagerFactory with
> >> 'NontransactionalRead' and 'NontransactionalWrite' set to 'true'
> >>
> >>
> >> Anyone can help me, please?
> >>
> >> Thanks.
> >
> > --
> > 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.
>
>
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Re: [appengine-java] How to clear logs?
Now,there is not found the document about the logs! Thanks Andrés Cerezo! My solustion: deploy another version as the default, and del the old version! so the logs may be clear all! 2010/2/10 Andrés Cerezo > I've the same problem that you and looking in the documentation of > google, I read that the logs can't be deleted. > -- 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] How to use junit test in the newest SDK1.3.1
Thanks for your help! ^ ^
It's OK!
Where's the download of the appengine-testing.jar sources?
It's a security?
Thanks!
在 2010年2月11日 上午8:25，Ikai L (Google) 写道：
> We've got a more simple interface for you now. Take a look:
>
> http://code.google.com/appengine/docs/java/tools/localunittesting.html
>
> 2010/2/10 时空之蕊
>
> I found the class
>> com.google.appengine.tools.development.ApiProxyLocalImpl is not
>> public,but before 1.3.1 it's public!
>> In the JUnit document:
>>
>> import java.io.File;
>> import com.google.appengine.tools.development.ApiProxyLocalImpl;
>> import com.google.apphosting.api.ApiProxy;
>>
>> ApiProxy.setDelegate(new ApiProxyLocalImpl(new File(".")){});
>>
>> So I can't new a ApiProxyLocalImpl instance!
>> Any body know how to use JUnit?
>> Thanks :)
>>
>
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Re: [appengine-java] How to use junit test in the newest SDK1.3.1
Hello Ikai L(Google)!
Thank you!
In the demo:
http://code.google.com/appengine/docs/java/tools/localunittesting.html
I have a idea about the JUnit4 testcase!
defined a Basic TestCase:
public class *GAETestCase* {
protected final LocalServiceTestHelper gaeHelper = new
LocalServiceTestHelper(new LocalDatastoreServiceTestConfig());
@Before
public *final* void *setUpForGAEEvn*() throws Exception {
gaeHelper.setUp();
}
@After
public *final* void *tearDownForGAEEvn*() throws Exception {
gaeHelper.tearDown();
}
}
public class OtherTestCase extends *GAETestCase* {
……
@Test
public void myTest() {
……
}
}
the another testcase OtherTestCase extends GAETestCase,
so It's will never forget invoke the *LocalServiceTestHelper.setUp* and *
LocalServiceTestHelper.tearDown* method!
(Krishna Caldas forgot to invoke *
LocalServiceTestHelper.setUp and **LocalServiceTestHelper.tearDown*,others
may be will forget invoke it!)
在 2010年2月11日 上午8:25，Ikai L (Google) 写道：
> We've got a more simple interface for you now. Take a look:
>
> http://code.google.com/appengine/docs/java/tools/localunittesting.html
>
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Re: [appengine-java] AppCfg error
you can see:Using Apache Ant<http://code.google.com/appengine/docs/java/tools/ant.html> 在 2010年2月16日 上午5:40，Andreas Blomqvist 写道： > Hi > > Still has this problem. Using Netbeans 6.8 on SnowLeopard 10.6 (OSX) > What build file are you refering to? The build-impl.xml or the > ant-deploy.xml ? > > Thanks > > > 2010/1/30 杨浩 > >> after gae set,this is a e.x: >> >> >> 开始更新GAE... >> >> >> > -- 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] How to delete all entities of a kind with the datastore viewer
in the admin console:clike the next 20 entity,then change the brower's location.href set *size=200* and *offset=0*, enter^ ^ The offset's max is *1000* Good luck！ 2010/3/12 Spines > I'm only able to delete 20 entities at a time, I have over 500 > entities of a certain kind. Is there a way I can delete them all from > the admin console? > -- 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: How to delete all entities of a kind with the datastore viewer
*In my store,have more than 100,000 entities here,but i find delete(limit
400) it's cost > 26s*
my datas is wrong so i must delete all entities of the kind(no index in the
kind)!
*1. first i use:*
Query q = pm.newQuery(query);
q.setRange(0, 400);
int count = 0;
try {
resultList = (List) q.execute();
for (T t : resultList) {
pm.deletePersistent(t);
count++;
}
return count;
} finally {
q.closeAll();
}
I found that:every time it's delete only few entity(<100)!(I watch 200
entities of the kind with GAE Datastore Viewer)
*2 second i use:*
UtilGAE.howTimer(true),return how time cost with a threadlocal var store a
start millionseconds,arg is a flag(true if cost time>26second throw a
IllegalStateException("it's cost more than limit 26s");
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
Query query = new
Query(Section.class.getSimpleName()).setKeysOnly();
int count = 0;
try {
Iterable iter =
ds.prepare(query).asIterable(FetchOptions.Builder.withLimit(400));
logger.info("query cost time：{}s",
UtilGAE.howTimer(true)/1000d);
for (Entity entity : iter) {
Key key = entity.getKey();
ds.delete(entity.getKey());
count++;
UtilGAE.howTimer(true);
}
if (count != 0) throw new IllegalStateException("next continue
to delete...");
} finally {
logger.info("delete：{},cost time:{}s", count,
UtilGAE.howTimer()/1000d);
}
so it's work fine(it's real delete entity from my store) and a most of cost
time in the 26s!
I say there have most of limited in the GAE Stored!you must to be carefull
when you have a larger datastore!
2010/3/12 Toby
> Hello,
>
> deleting 500 should not take a lot of time. Did you try the
> deletePersistentAll method?
>Query q = pm.newQuery(persistentClass);
>q.deletePersistentAll();
>
> otherwise what I do is using the task queue. I delete 1000 entities
> and then put a task in the queue to delete another 1000. In that case
> you can not use the deletePersistentAll. You need to query by object
> type and limit:
>
>Query q = pm.newQuery(query);
>q.setRange(0, size);
>
>try {
>resultList = (List) q.execute();
>resultSize = resultList.size();
>for (T t : resultList) {
>pm.deletePersistent(t);
>}
>return resultSize;
>} finally {
>q.closeAll();
>}
>
> since I return the size I see how much records where affected. If it
> is less than 1000 I know that I can stop doing the queuing.
> This is a bit difficult to set up but works fine. I believe there is
> not better way to do that but I am happy about any other suggestions.
>
> Cheers,
> Toby
>
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