[appengine-java] Extending GAE's Jetty config
Does GAE use JettyWebXmlConfiguration to allow for WebAppContext custom configuration - via jetty-web.xml? I see that class in appengine-local-runtime.jar, but is it part of Jetty' default Configuration instances? My guess would be no, as putting invalid jetty-web.xml in WEB-INF doesn't output any exception. This would be useful to allow for different extensions; e.g. custom injection support -- jsr299/CDI. -Ales -- 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: Extending GAE's Jetty config
OK, filled this here: * http://code.google.com/p/googleappengine/issues/detail?id=2943 On Mar 9, 8:21 pm, Don Schwarz wrote: > No, at the moment we specifically disable jetty-web.xml for security > purposes. Feel free to file a feature request in our issue tracker asking > us to re-enable it. > > On Tue, Mar 9, 2010 at 9:52 AM, alesj wrote: > > Does GAE use JettyWebXmlConfiguration to allow for WebAppContext > > custom configuration - via jetty-web.xml? > > I see that class in appengine-local-runtime.jar, but is it part of > > Jetty' default Configuration instances? > > My guess would be no, as putting invalid jetty-web.xml in WEB-INF > > doesn't output any exception. > > > This would be useful to allow for different extensions; e.g. custom > > injection support -- jsr299/CDI. > > > -Ales > > > -- > > 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] Using app's ELResolver class
I'm trying to use new EL api - version 2.2. - which knows how to deal
with parameterized invocations; e.g. #{FooBarDAO.getInfos('alesj')}.
Hence I'm bundling this new EL jars with my app.
At runtime I get this
java.lang.NoSuchMethodError: javax.el.ELResolver.invoke(Ljavax/el/
ELContext;Ljava/lang/Object;Ljava/lang/Object;[Ljava/lang/Class;[Ljava/
lang/Object;)Ljava/lang/Object;
at com.sun.el.parser.AstValue.getValue(AstValue.java:111)
at com.sun.el.parser.AstValue.getValue(AstValue.java:163)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:
219)
at
org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:
71)
at
com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:
71)
which lead me to this finding (cl is the ClassLoader of my servlet)
Class elc = cl.loadClass("javax.el.ELResolver");
String info =
elc.getProtectionDomain().getCodeSource().getLocation().toExternalForm();
System.out.println("info = " + info);
// info ==> file:/foobar/appengine-java-sdk-1.3.2/lib/shared/
geronimo-el_1.0_spec-1.0.1.jar
This looks wrong per web CL spec, which is children first (or current
CL first, then parent CL).
Any reason for this?
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[appengine-java] Re: Using app's ELResolver class
While this finds the right jar
URL url = cl.getResource("META-INF/maven/javax.el/el-api/
pom.properties");
String info = url.toExternalForm();
System.out.println("info = " + info);
// jar:file:/foobar/projects/foobar/trunk/server/target/
foobar-server-0.0.1-SNAPSHOT/WEB-INF/lib/el-api-2.2.jar!/META-INF/
maven/javax.el/el-api/pom.properties
So we know the resources are there.
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[appengine-java] Re: Using app's ELResolver class
I tried all sorts of things -- implementing my own child-first
classloader,
then passing it around as Thread.getContextClassLoader,
creating my listeners and servlets with it, but w/o success.
The issue is, that JSF is already installed/deployed as part of custom
Jetty/GAE initialization,
hence my "wrapped" FacesServlet wasn't able to find proper factories --
> breaking at initialization.
Not wanting to go deeper into JSF, I stopped there.
Even if we by-passed this factory lookup, my guess is we would
encounter other EL related problems,
as I would suspect that GAE's EL classes would sometimes leak into our
code --> CCE.
On Apr 7, 8:21 pm, Joel Weight wrote:
> I ran into this a few months ago when first getting jsf 2 going.
> Unfortunately I didn't find a resolution and wound up on the old EL
> version, so if you figure something out, please let us know.
>
> Thanks,
> Joel
>
> On Wed, Apr 7, 2010 at 5:10 AM, alesj wrote:
> > While this finds the right jar
>
> > URL url = cl.getResource("META-INF/maven/javax.el/el-api/
> > pom.properties");
> > String info = url.toExternalForm();
> > System.out.println("info = " + info);
> > // jar:file:/foobar/projects/foobar/trunk/server/target/
> > foobar-server-0.0.1-SNAPSHOT/WEB-INF/lib/el-api-2.2.jar!/META-INF/
> > maven/javax.el/el-api/pom.properties
>
> > So we know the resources are there.
>
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[appengine-java] urlfetch and embedded gae usage error
When running (embedded) GAE via appengine-tools-api API
DevAppServerFactory factory = new DevAppServerFactory();
server = factory.createDevAppServer(appLocation,
containerConfig.getBindAddress(), containerConfig.getBindHttpPort());
Map properties = System.getProperties();
//noinspection unchecked
server.setServiceProperties(properties);
server.start();
I get a known error, although I don't understand the reason behind it.
Running this test code
URL url = new URL("http://localhost:8080/test";);
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
OutputStream out = conn.getOutputStream();
FooBar ping = new FooBar();
out.write(SerializationFactory.serialize(ping));
out.flush();
out.close();
InputStream in = conn.getInputStream(); // <-- ERROR
produces
com.google.apphosting.api.ApiProxy$CallNotFoundException: The API
package 'urlfetch' or call 'Fetch()' was not found.
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:95)
at
com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java:
34)
at
com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler
$Connection.fetchResponse(URLFetchServiceStreamHandler.java:404)
at
com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler
$Connection.getInputStream(URLFetchServiceStreamHandler.java:283)
I found this old post, but I don't see how to enable this to fix my
problem.
e.g. when, how, where to setup this, ...
*
http://groups.google.com/group/google-appengine-java/browse_thread/thread/9512c09af2e969bc/e55ed5e2456865b9?lnk=gst&q=%27urlfetch%27+or+call+%27Fetch%28%29%27+was+not+found#e55ed5e2456865b9
Any idea what can be done to make this exception go away? :-)
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[appengine-java] Re: urlfetch and embedded gae usage error
> The URL fetch API service has not been registered. You might need to > set the environment and/or ApiProxy.Delegate. Why is it not registered? I tried setting up the Delegate, but to no effect. I probably did it too late? -- 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: urlfetch and embedded gae usage error
> See an example here which allows running GAE from a normal main() method > > http://code.google.com/p/remote-datastore/source/browse/src/main/java... How should appId and warPath look like? (I see here are "no-local-appid-set" ands ".") Or what's their purpose? -- 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: urlfetch and embedded gae usage error
In which jar are these classes located? import com.google.appengine.tools.development.ApiProxyLocal; import com.google.appengine.tools.development.ApiProxyLocalFactory; import com.google.appengine.tools.development.LocalServerEnvironment; -- 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: urlfetch and embedded gae usage error
OK, found it Skywalker:impl alesj$ jar -tf appengine-local-runtime.jar | grep ServerEnv com/google/appengine/tools/development/LocalServerEnvironment.class On Aug 9, 4:52 pm, alesj wrote: > In which jar are these classes located? > > import com.google.appengine.tools.development.ApiProxyLocal; > import com.google.appengine.tools.development.ApiProxyLocalFactory; > import com.google.appengine.tools.development.LocalServerEnvironment; -- 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: urlfetch and embedded gae usage error
I've added this just after the server is started, but no luck. :-(
ApiProxy.Environment env = new DelegatingEnvironment(new
DummyEnvironment())
{
@Override
public String getAppId()
{
return archive.getName();
}
};
ApiProxyLocalFactory aplf = new ApiProxyLocalFactory();
ApiProxy.Delegate delegate = aplf.create(new
DummyLocalServerEnvironment(appLocation, containerConfig));
ApiProxy.setEnvironmentForCurrentThread(env);
ApiProxy.setDelegate(delegate);
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[appengine-java] Re: urlfetch and embedded gae usage error
OK, got a bit further. After adding dummy Environment and Delegate, I now get this: com.google.appengine.repackaged.com.google.protobuf.UninitializedMessageException: Message missing required fields: StatusCode at com.google.appengine.repackaged.com.google.protobuf.AbstractMessage $Builder.newUninitializedMessageException(AbstractMessage.java:522) at com.google.appengine.api.urlfetch.URLFetchServicePb $URLFetchResponse$Builder.build(URLFetchServicePb.java:2034) at com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java: 49) at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler $Connection.fetchResponse(URLFetchServiceStreamHandler.java:404) at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler $Connection.getInputStream(URLFetchServiceStreamHandler.java:283) at java.net.URL.openStream(URL.java:1010) I guess the dummy Delegate needs to be smarter. :) Again, do we know what's the reason the Environment and Delegate are not set in this embedded GAE usage? -- 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] EL update or CL fix
It's been a while since I reported this odd ClassLoading (and EL) behavior: * http://groups.google.com/group/google-appengine-java/browse_thread/thread/e9c9578f034dd1f9 Any plans on fixing this? Or, are there perhaps valid reasons why EL is included in GAE distribution AND loaded by the app's CL? -- 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: EL update or CL fix
Related post: * http://groups.google.com/group/google-appengine-java/browse_thread/thread/67c8c345d386eaec -- 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] JPA query + missing the obvious?
I have this query:
Query query = getEM().createQuery("select s from Subscription s
where s.clientId = ?1 and s.topicId = ?2");
query.setParameter(1, client.getId());
query.setParameter(2, topic.getId());
return getSingleResult(query);
I'm pretty sure it should return some results - the proper data is
persisted before this,
but yet, I don't get any results.
Which obvious thing am I missing?
My entity class:
@Entity
public class Subscription extends AbstractEntity
{
private static long serialVersionUID = 1l;
private Long clientId;
private Long topicId;
public Long getClientId()
{
return clientId;
}
public void setClientId(Long client)
{
this.clientId = client;
}
public Long getTopicId()
{
return topicId;
}
public void setTopicId(Long topicId)
{
this.topicId = topicId;
}
}
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[appengine-java] Re: JPA query + missing the obvious?
A missing info -- the matching data is persisted before, in a separate/ different transaction. -- 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: JPA query + missing the obvious?
Experimenting a bit more, I'm now even more confused ...
Set set = new HashSet();
Query query = getEM().createQuery("select s from Subscription s
where s.clientId = ?1");
Long cid = client.getId();
query.setParameter(1, cid);
List list = query.getResultList(); // <-- not empty
set.addAll(list);
query = getEM().createQuery("select s from Subscription s where
s.topicId = ?1");
Long tid = topic.getId();
query.setParameter(1, tid);
list = query.getResultList(); // <-- same results as
before -- as we have proper "intersection" data
set.addAll(list);
query = getEM().createQuery("select s from Subscription s where
s.clientId = ?1 and s.topicId = ?2");
query.setParameter(1, cid);
query.setParameter(2, tid);
list = query.getResultList(); // <- no results?!?
set.addAll(list);
return getSingleResult(set);
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[appengine-java] memcache and id parsing error
Any idea why this happens? javax.servlet.ServletContext log: unavailable com.google.appengine.api.memcache.InvalidValueException: IO exception parsing value of '1' at com.google.appengine.api.memcache.MemcacheServiceImpl.get(MemcacheServiceImpl.java: 289) at com.google.appengine.api.memcache.stdimpl.GCache.get(GCache.java: 158) at org.datanucleus.cache.javaxcache.JavaxCacheLevel2Cache.get(JavaxCacheLevel2Cache.java: 116) at org.datanucleus.ObjectManagerImpl.getObjectFromCache(ObjectManagerImpl.java: 3658) at org.datanucleus.ObjectManagerImpl.findObjectUsingAID(ObjectManagerImpl.java: 2123) at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: 555) at org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: 520) at org.datanucleus.store.appengine.query.DatastoreQuery.access $300(DatastoreQuery.java:110) at org.datanucleus.store.appengine.query.DatastoreQuery $6.apply(DatastoreQuery.java:638) at org.datanucleus.store.appengine.query.DatastoreQuery $6.apply(DatastoreQuery.java:630) at org.datanucleus.store.appengine.query.LazyResult.resolveNext(LazyResult.java: 94) at org.datanucleus.store.appengine.query.LazyResult $LazyAbstractListIterator.computeNext(LazyResult.java:215) at org.datanucleus.store.appengine.query.AbstractIterator.tryToComputeNext(AbstractIterator.java: 132) at org.datanucleus.store.appengine.query.AbstractIterator.hasNext(AbstractIterator.java: 127) at org.datanucleus.store.appengine.query.LazyResult $AbstractListIterator.hasNext(LazyResult.java:169) -- 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: memcache and id parsing error
Is there a way to clear memcache from admin console? On Oct 17, 3:26 pm, alesj wrote: > Any idea why this happens? > > javax.servlet.ServletContext log: unavailable > com.google.appengine.api.memcache.InvalidValueException: IO exception > parsing value of '1' > at > com.google.appengine.api.memcache.MemcacheServiceImpl.get(MemcacheServiceImpl.java: > 289) > at com.google.appengine.api.memcache.stdimpl.GCache.get(GCache.java: > 158) > at > org.datanucleus.cache.javaxcache.JavaxCacheLevel2Cache.get(JavaxCacheLevel2Cache.java: > 116) > at > org.datanucleus.ObjectManagerImpl.getObjectFromCache(ObjectManagerImpl.java: > 3658) > at > org.datanucleus.ObjectManagerImpl.findObjectUsingAID(ObjectManagerImpl.java: > 2123) > at > org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: > 555) > at > org.datanucleus.store.appengine.query.DatastoreQuery.entityToPojo(DatastoreQuery.java: > 520) > at org.datanucleus.store.appengine.query.DatastoreQuery.access > $300(DatastoreQuery.java:110) > at org.datanucleus.store.appengine.query.DatastoreQuery > $6.apply(DatastoreQuery.java:638) > at org.datanucleus.store.appengine.query.DatastoreQuery > $6.apply(DatastoreQuery.java:630) > at > org.datanucleus.store.appengine.query.LazyResult.resolveNext(LazyResult.java: > 94) > at org.datanucleus.store.appengine.query.LazyResult > $LazyAbstractListIterator.computeNext(LazyResult.java:215) > at > org.datanucleus.store.appengine.query.AbstractIterator.tryToComputeNext(AbstractIterator.java: > 132) > at > org.datanucleus.store.appengine.query.AbstractIterator.hasNext(AbstractIterator.java: > 127) > at org.datanucleus.store.appengine.query.LazyResult > $AbstractListIterator.hasNext(LazyResult.java:169) -- 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: memcache and id parsing error
> Any idea why this happens? To answer things myself. This one is actually pretty obvious, if the error reporting would be less confusing / better. It's a plain simple issue of forgetting to change serialVersionUID when changing entity's class signature. -- 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: JPA query + missing the obvious?
Again, to answer things myself.
This one looks like a bug in JPA query parameter setting,
or I'm using it the wrong way -- what's the index start, 0 or 1?
(I would expect if I set ?1, then I should use 1 as parameter index,
right?)
The query works correctly if you use named version of parameter
setting.
e.g. setParameter("some_id", id) vs. setParamter(1, id)
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[appengine-java] MailService::sendToAdmins, what should To look like?
Reading this: * http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/mail/MailService.html#sendToAdmins%28com.google.appengine.api.mail.MailService.Message%29 I'm not able to gather what the "to" property should look like in Message. >From the javadoc, I would expect it to be "" - empty string. Using that MailService.Message msg = new MailService.Message(sender, "", subject, textBody); mailService.sendToAdmins(msg); throws me this exception java.lang.IllegalArgumentException: Bad Request: Unexpected recipients Tried putting null there (into "to") -- I get NPE. So, what's the right value or way to have this working? -- 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: MailService::sendToAdmins, what should To look like?
The solution is here: MailService.Message msg = new MailService.Message(); msg.setSender(sender); msg.setSubject(subject); msg.setTextBody(textBody); mailService.sendToAdmins(msg); On Oct 18, 12:11 am, alesj wrote: > Reading this: > *http://code.google.com/appengine/docs/java/javadoc/com/google/appengi... > > I'm not able to gather what the "to" property should look like in > Message. > From the javadoc, I would expect it to be "" - empty string. > > Using that > > MailService.Message msg = new MailService.Message(sender, "", > subject, textBody); > mailService.sendToAdmins(msg); > > throws me this exception > > java.lang.IllegalArgumentException: Bad Request: Unexpected recipients > > Tried putting null there (into "to") -- I get NPE. > > So, what's the right value or way to have this working? -- 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: Recommended maximum number of entities in an entity group
I think you're confusing entity *group* with actual entities stored in datastore, as I doubt you'll have thousands of related entities. --> http://code.google.com/appengine/docs/java/datastore/transactions.html#Using_Transactions see "Entity groups" On Oct 20, 7:39 pm, "nicanor.babula" wrote: > Hi everbody, > > I have a question regarding the datastore best-practices. > > The appengine's official documentation says that is not a good > practice to put too many entities in the same entity group. What does > "too many" mean in this case? Hundreds? Thousands? Milions? > > Thanks in advance, > Cristian Babula. -- 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] Phantom JPA entity
We have a simple Java web app - using JPA with 2nd level cache enabled. We're running 2 instances of this app simultaneously -- test env and real production. Atm the two instances don't diff much; both use the same persistence- unit name, same cache name, same entities, ... OK, the application name in the app engine (appengone- web.xml#application) is of course different. org.datanucleus.store.appengine.jpa.DatastorePersistenceProvider When running our app in production, we sometimes get "phantom" entity results. e.g. we see an entity result that matches (is equal to) some result we put in out test app instance. Searching for this, let me to this old post: * http://stackoverflow.com/questions/3033286/appengine-datastore-phantom-entity-inconsistent-state which might be similar. Is this a know issue? Or are we missing something to do a proper split? e.g. too much of the "same" stuff -- PU name, cache name, ...? Thanks for any info. -- 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: Memcache: can't get it working
http://code.google.com/appengine/docs/java/memcache/overview.html
>> Values can expire from the memcache at any time, and may be expired prior to
>> the expiration deadline set for the value.
All looks fine, but like it says, cached value can go away at any
time.
Which is probably what's happening in your case.
On Nov 5, 1:45 pm, Lennart Benoot wrote:
> Hi all,
>
> I'm trying to implement Memcache but without success so far. I have
> difficulties finding examples containing fully working code so I tried
> to construct based on what I could find. Here's the code to get a
> reference to the cache:
>
> cache= CacheManager.getInstance().getCache("fourturemark");
> if (cache == null) {
> cache =
> CacheManager.getInstance().getCacheFactory().createCache(Collections.emptyMap());
> CacheManager.getInstance().registerCache("fourturemark", cache);
>
> }
>
> If I'm right, this code should return the cache in case it already
> exists. However, based on performance, I see that data stored in cache
> is reloaded from resource instead of cache.
>
> Any idea what I'm doing wrong here?
>
> BR,
> Lennart
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