[appengine-java] Session and load balancing
I would like to know if GAE insures that requests attached to the same HttpSession are redirected on the same server instance, considering that it may not because of load balancing. -- 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: Session and load balancing
This is not needed and we can manage with session store, but developpers must be informed not to use static attributes, given that they are shared between server instances. If not, developments that works locally may not in production context. On 20 avr, 20:36, Nick Rudnik wrote: > Why would this be needed? The session implementation stores its data outside > of a specific jvm so every instance has access to all sessions. It is a very > excellent design decision not to have to connect a user to a single instance > for the life of a session. Instances can come and go as they please without > affecting any existing sessions. -- 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] Are GAE servers multicore ?
Hello, Are GAE servers multicore ? I mean, do we have gain of performance when using mutithreading ? -- 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] Select query using keys
Hello,
I have two beans that are associated :
@Entity
public class User {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Key key;
[...]
}
@Entity
public class Profil {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Key key;
private Key user;
[...]
}
I want to select a Profil by the user key :
User userBean = dao.getUser();
Query query = em.query("SELECT p FROM Profil p WHERE p.user = " +
userBean.getKey())
But my query throws an exception :
org.datanucleus.store.appengine.query.DatastoreQuery
$UnsupportedDatastoreFeatureException: Problem with query : Unsupported method while
parsing expression: InvokeExpression{[null].User(Literal{21})}
I tried with quotes :
Query query = em.query("SELECT p FROM Profil p WHERE p.user = ' " +
userBean.getKey() + " ' ")
But then, the query returns no result.
Thank you for your help :)
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[appengine-java] [Objectify] logical constraints and null values
Hello, Two questions : How can I filter a query with logical constraints (or, and) ? (where attribut = foo1 or attribut = foo2) And furthermore, how can I filter a query with null or non null values ? (where attribut is null / where attribut is not null) Thank you for your help :) -- 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: [Objectify] logical constraints and null values
Thanks guys :)
On 4 juil, 23:10, Bruno Fuster wrote:
> jMotta,
>
> You can make OR queries using lists.
> The datastore will run one query for each parameter and then join the
> results for you.
>
> Like I said: ofy.query(Obj.class).filter("name in", Arrays.asList("name1",
> "name2")).list();
>
> works like a champ :)
>
> Regards,
>
>
>
>
>
>
>
>
>
> On Mon, Jul 4, 2011 at 6:01 PM, jMotta wrote:
> > Until where I know, there is no feature to accomplish the OR, AND is
> > implicit when you add more filters.
>
> > IS NULL is equals to .filter("attr", null);
> > IS NOT NULL is equals to .filter("attr !=" null);
>
> > If you find something about doing OR, let us know! :)
>
> > *Jayr Motta*
> > Software Developer
> > *
> > *
> > I'm on
> > BlackBeltFactory.com<http://www.blackbeltfactory.com/ui#!User/jmotta/ref=jmotta>
> > !
>
> > On Mon, Jul 4, 2011 at 5:30 PM, hadf wrote:
>
> >> Hello,
>
> >> Two questions :
>
> >> How can I filter a query with logical constraints (or, and) ? (where
> >> attribut = foo1 or attribut = foo2)
> >> And furthermore, how can I filter a query with null or non null
> >> values ? (where attribut is null / where attribut is not null)
>
> >> Thank you for your help :)
>
> >> --
> >> You received this message because you are subscribed to the Google Groups
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> >> google-appengine-java@googlegroups.com.
> >> To unsubscribe from this group, send email to
> >> google-appengine-java+unsubscr...@googlegroups.com.
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> >>http://groups.google.com/group/google-appengine-java?hl=en.
>
> > --
> > You received this message because you are subscribed to the Google Groups
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>
> --
> Bruno Fuster
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[appengine-java] Image size is not properly detected by shadowbox.js or clearbox.js
Hello, I want to diplay my images in a lightbox like shadowbox or clearbox. These scripts work fine with a static image file, but not with dynamic serving resource like a Servlet or ImageService, so that the frame in wich the image is displayed doesn't fit the image. Does someone has encountered this problem yet ? -- 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] Does JSF Session Bean are supported ?
I'm a newbie in JSF and AppEngine technology. I've created a simple form which redirect to a summary page that displays the form data. The trouble is that form data is lost during redirect as if session beans were not supported. So I would like to know how to deal with session data. Here is my JSF config : user fr.hadf.test.login.User session And my AppEngine config : true -- 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] Wildcard seem not working in url-pattern
Hello, I want to define a servlet like this : test fr.hadf.test.servlet.Test test /* But wildcard doesn't work when url-pattern is root / as defined in my web.xml So that my servlet is not requested when i request an url like "http:// foo.appspot.com/foo" but only if i request "http://foo.appspot.com/"; -- 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] Libraries in /war/WEB-INF/lib not in the classpath
Hello, I added libraries in the /war/WEB-INF/lib directory, but they are not in the classpath. If I add them in the project eclipse build-path, they are not accessible at runtime. -- 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: Libraries in /war/WEB-INF/lib not in the classpath
Thanks for your help didier. That's what I did. I put my jar in the /war/WEB-INF/lib directory and added it to the Eclipse build-path. But my jar is not loaded at runtime. On 30 sep, 14:17, Didier Durand wrote: > Hi, > > You have to do both > > - 1) put in the war so that you have the runtime code when you run on > Google App Engine > - 2) put them in your classpath so that your IDE can use the > definitions that they contain when compiling your own class > > regards > didier > > On Sep 30, 1:01 pm, hadf wrote: > > > Hello, > > > I added libraries in the /war/WEB-INF/lib directory, but they are not > > in the classpath. > > If I add them in the project eclipse build-path, they are not > > accessible at runtime. -- 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: Libraries in /war/WEB-INF/lib not in the classpath
Actually, my librarie contains a servlet, but it is not called when I request the url-pattern, so I have a 404 Error. It works fine in a Eclipse Web Project, but not in Google Web Application Project. On 1 oct, 05:22, Didier Durand wrote: > Hello, what do you mean "not loaded" ? You get exceptions ? > didier > > On Sep 30, 10:38 pm, hadf wrote: > > > Thanks for your help didier. > > > That's what I did. I put my jar in the /war/WEB-INF/lib directory and > > added it to the Eclipse build-path. But my jar is not loaded at > > runtime. > > > On 30 sep, 14:17, Didier Durand wrote: > > > > Hi, > > > > You have to do both > > > > - 1) put in the war so that you have the runtime code when you run on > > > Google App Engine > > > - 2) put them in your classpath so that your IDE can use the > > > definitions that they contain when compiling your own class > > > > regards > > > didier > > > > On Sep 30, 1:01 pm, hadf wrote: > > > > > Hello, > > > > > I added libraries in the /war/WEB-INF/lib directory, but they are not > > > > in the classpath. > > > > If I add them in the project eclipse build-path, they are not > > > > accessible at runtime. -- 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] appcfg doesn't update my static file
I try to update my application with appcfg command. The trouble is that appcfg doesn't update a static file so that my application uses an older version. I don't know if it the reason of the problem, I updated my application from a first directory, and now I try again from another directory. But the appengine-web.xml references the same application id. My static file is loaded only when init the main Servlet of my app. But I think that the new version of my app is in a different context so that the file is loaded again. -- 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] Many to many relation ship
Hello,
I read that many to many relation ship must resolved by using sets of
Key.
But what I don't understand is how do I specify the type the Key is
referencing.
I mean that if I have a many to many relation ship between Car and
User, how jpa or jdo knows that Car is associated to User ?
public class Car {
@OneToMany
private Set users; //this relation ship is untyped
}
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[appengine-java] Join selection between two entities in JPA
I have two entities :
@Entity
public class Modele {
private Long id;
private Long marque;
[...]
}
@Entity
public class Marque {
private Long id;
private String label;
[...]
}
My entities are not directly associated because I don't want to use
Key ids.
I want to retrieve Modele by label Marque. So I tried this request :
select modele from Modele modele, Marque marque
where modele.marque = marque.id
and marque.label = :marque
But I have a NullPointerException :
java.lang.NullPointerException
at
org.datanucleus.store.appengine.query.DatastoreQuery.getSortProperty(DatastoreQuery.java:
788)
at
org.datanucleus.store.appengine.query.JoinHelper.executeJoinQuery(JoinHelper.java:
64)
[...]
Can you help me to write my request please.
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[appengine-java] Re: Join selection between two entities in JPA
Thank you for your response SebaGra.
:'(
On 18 oct, 13:47, SebaGra wrote:
> As far as I know, join's are not available in GAE.
> Take a look at this:
>
> http://code.google.com/appengine/docs/java/datastore/relationships.html
>
> 2010/10/18 hadf
>
> > I have two entities :
>
> > @Entity
> > public class Modele {
> > private Long id;
> > private Long marque;
>
> > [...]
> > }
>
> > @Entity
> > public class Marque {
> > private Long id;
> > private String label;
>
> > [...]
> > }
>
> > My entities are not directly associated because I don't want to use
> > Key ids.
>
> > I want to retrieve Modele by label Marque. So I tried this request :
> > select modele from Modele modele, Marque marque
> > where modele.marque = marque.id
> > and marque.label = :marque
>
> > But I have a NullPointerException :
> > java.lang.NullPointerException
> > at
>
> > org.datanucleus.store.appengine.query.DatastoreQuery.getSortProperty(DatastoreQuery.java:
> > 788)
> > at
>
> > org.datanucleus.store.appengine.query.JoinHelper.executeJoinQuery(JoinHelper.java:
> > 64)
> > [...]
>
> > Can you help me to write my request please.
>
> > --
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> > .
> > For more options, visit this group at
> >http://groups.google.com/group/google-appengine-java?hl=en.
>
>
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[appengine-java] [Eclipse Plugin] Problem with refreshing static files
I have a CSS file main.css in my war directory. I've modified it, but the trouble is that when I execute my project in Eclipse as a WebApplication, the server delivers the old version of the file. All works fine with the appserver command. I searched in the workspace, and even in my hole homedir, but there is a single file main.css. If the server delivers an old version, is there a cache directory ? But where it is ? And how to refresh this cache ? I tried to clean the project in Eclipse, but with no result. I had the same problem few weeks ago with the web.xml file. Can you help me please. -- 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: Problem with refreshing static files
Mmmhh I thought it works fine with appserver command, but I have the same problem finally. On 21 oct, 19:42, hadf wrote: > I have a CSS file main.css in my war directory. I've modified it, but > the trouble is that when I execute my project in Eclipse as a > WebApplication, the server delivers the old version of the file. All > works fine with the appserver command. > > I searched in the workspace, and even in my hole homedir, but there is > a single file main.css. If the server delivers an old version, is > there a cache directory ? But where it is ? And how to refresh this > cache ? I tried to clean the project in Eclipse, but with no result. I > had the same problem few weeks ago with the web.xml file. > > Can you help me please. -- 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: Problem with refreshing static files
Ok, I found the reason of my problem. The cache is the browser cache. http://code.google.com/intl/fr/appengine/docs/java/config/appconfig.html#expiration On 21 oct, 21:09, hadf wrote: > Mmmhh I thought it works fine with appserver command, but I have the > same problem finally. > > On 21 oct, 19:42, hadf wrote: > > > I have a CSS file main.css in my war directory. I've modified it, but > > the trouble is that when I execute my project in Eclipse as a > > WebApplication, the server delivers the old version of the file. All > > works fine with the appserver command. > > > I searched in the workspace, and even in my hole homedir, but there is > > a single file main.css. If the server delivers an old version, is > > there a cache directory ? But where it is ? And how to refresh this > > cache ? I tried to clean the project in Eclipse, but with no result. I > > had the same problem few weeks ago with the web.xml file. > > > Can you help me please. > > -- 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: Problem with refreshing static files
Arggg !! I thougth the problem was due to the browser cache, but even if I delete it, my application steel use the old version of my css. I don't understand, because if I connect to the URL of the stylesheet, I can see the last version. On 21 oct, 21:28, hadf wrote: > Ok, I found the reason of my problem. The cache is the browser cache. > > http://code.google.com/intl/fr/appengine/docs/java/config/appconfig.h... > > On 21 oct, 21:09, hadf wrote: > > > Mmmhh I thought it works fine with appserver command, but I have the > > same problem finally. > > > On 21 oct, 19:42, hadf wrote: > > > > I have a CSS file main.css in my war directory. I've modified it, but > > > the trouble is that when I execute my project in Eclipse as a > > > WebApplication, the server delivers the old version of the file. All > > > works fine with the appserver command. > > > > I searched in the workspace, and even in my hole homedir, but there is > > > a single file main.css. If the server delivers an old version, is > > > there a cache directory ? But where it is ? And how to refresh this > > > cache ? I tried to clean the project in Eclipse, but with no result. I > > > had the same problem few weeks ago with the web.xml file. > > > > Can you help me please. > > -- 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: Problem with refreshing static files
Sorry, it's OK, the problem was due to my CSS. On 22 oct, 13:04, hadf wrote: > Arggg !! > > I thougth the problem was due to the browser cache, but even if I > delete it, my application steel use the old version of my css. > > I don't understand, because if I connect to the URL of the stylesheet, > I can see the last version. > > On 21 oct, 21:28, hadf wrote: > > > Ok, I found the reason of my problem. The cache is the browser cache. > > >http://code.google.com/intl/fr/appengine/docs/java/config/appconfig.h... > > > On 21 oct, 21:09, hadf wrote: > > > > Mmmhh I thought it works fine with appserver command, but I have the > > > same problem finally. > > > > On 21 oct, 19:42, hadf wrote: > > > > > I have a CSS file main.css in my war directory. I've modified it, but > > > > the trouble is that when I execute my project in Eclipse as a > > > > WebApplication, the server delivers the old version of the file. All > > > > works fine with the appserver command. > > > > > I searched in the workspace, and even in my hole homedir, but there is > > > > a single file main.css. If the server delivers an old version, is > > > > there a cache directory ? But where it is ? And how to refresh this > > > > cache ? I tried to clean the project in Eclipse, but with no result. I > > > > had the same problem few weeks ago with the web.xml file. > > > > > Can you help me please. > > -- 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.
