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Posted to user@cayenne.apache.org by tristan <tr...@yahoo.com> on 2009/06/19 12:11:18 UTC
Client doesn't work with Cayenne Web Service
I've developed a small application with Apache Cayenne using Cayenne Web Service. The application was developed on Eclipse using the Jetty plugin. This was the only way to make it work, so I can start writing code.
The problem is when I try to deploy the application using a standalone Jetty server, the client java application throws an exception for this code (and any example from online documentation): ClientConnection connection = new HessianConnection(
"http://localhost:8080/reselleri/cayenne-service");
DataChannel channel = new ClientChannel(connection);
ObjectContext context = new CayenneContext(channel);
SelectQuery select = new SelectQuery(Administrator.class);
// this is where the exception is thrown !
List rezultat = context.performQuery(select);
If I run the server web service inside Eclipse Jetty Plugin, it works perfectly:
INFO QueryLogger: Detected and installed adapter: org.apache.cayenne.dba.derby.DerbyAdapter
INFO QueryLogger: SELECT t0.denumire, t0.parola, t0.username, t0.id FROM ADMINISTRATOR t0 - prepared in 47 ms.
INFO QueryLogger: === returned 2 rows. - took 1344 ms.
If I run the service with standalone Jetty or Tomcat (I've tried many versions, even for Cayenne+dependencies, it' the same) the client won't work, as you can see in the exception output below. I can mention that while running Tomcat/Jetty, I don't have problems running servlets using Cayenne on server side. Only the client has problems. It seems that for some reason, the cayenne web service+client works only with Jetty plugin. What can I do ?
Thank you very much for your attention.
TristanBelow is the stdout from client, the connection is fine, but I can't perform queries.19.06.2009 12:21:08 org.apache.cayenne.remote.hessian.HessianConnection connect
INFO: Connecting to [http://localhost:8080/reselleri/cayenne-service] - dedicated session.
19.06.2009 12:21:09 org.apache.cayenne.remote.hessian.HessianConnection connect
INFO: === Connected, session: org.apache.cayenne.remote.RemoteSession@1de3f2d[sessionId=863r7x7r6ilu] - took 1125 ms.
19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
INFO: --- Message 0: Bootstrap
19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
INFO: === Message 0: Bootstrap done - took 391 ms.
19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
INFO: --- Message 1: Query
com.caucho.hessian.io.HessianProtocolException:
at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java)
at $Proxy0.processMessage(Unknown Source)
at org.apache.cayenne.remote.hessian.HessianConnection.doSendMessage(HessianConnection.java:140)
at org.apache.cayenne.remote.BaseConnection.sendMessage(BaseConnection.java:73)
at org.apache.cayenne.remote.ClientChannel.send(ClientChannel.java:242)
at org.apache.cayenne.remote.ClientChannel.onQuery(ClientChannel.java:88)
at org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
at org.apache.cayenne.CayenneContextQueryAction.execute(CayenneContextQueryAction.java:47)
at org.apache.cayenne.CayenneContext.onQuery(CayenneContext.java:290)
at org.apache.cayenne.CayenneContext.performQuery(CayenneContext.java:279)
at com.distributie.client.FormPrincipal.Connect(FormPrincipal.java:170)
at com.distributie.client.FormPrincipal.<init>(FormPrincipal.java:145)
----------skipped lines ------------
Re: Client doesn't work with Cayenne Web Service
Posted by Andrey Razumovsky <ra...@gmail.com>.
Check your Hessian version. I think last time I worked with it I had Hessian
3.0.20
2009/6/19 tristan <tr...@yahoo.com>
> I've developed a small application with Apache Cayenne using Cayenne Web
> Service. The application was developed on Eclipse using the Jetty plugin.
> This was the only way to make it work, so I can start writing code.
> The problem is when I try to deploy the application using a standalone
> Jetty server, the client java application throws an exception for this code
> (and any example from online documentation): ClientConnection connection
> = new HessianConnection(
> "http://localhost:8080/reselleri/cayenne-service");
> DataChannel channel = new ClientChannel(connection);
> ObjectContext context = new CayenneContext(channel);
>
> SelectQuery select = new SelectQuery(Administrator.class);
> // this is where the exception is thrown !
> List rezultat = context.performQuery(select);
>
> If I run the server web service inside Eclipse Jetty Plugin, it works
> perfectly:
>
> INFO QueryLogger: Detected and installed adapter:
> org.apache.cayenne.dba.derby.DerbyAdapter
> INFO QueryLogger: SELECT t0.denumire, t0.parola, t0.username, t0.id FROM
> ADMINISTRATOR t0 - prepared in 47 ms.
> INFO QueryLogger: === returned 2 rows. - took 1344 ms.
>
>
> If I run the service with standalone Jetty or Tomcat (I've tried many
> versions, even for Cayenne+dependencies, it' the same) the client won't
> work, as you can see in the exception output below. I can mention that while
> running Tomcat/Jetty, I don't have problems running servlets using Cayenne
> on server side. Only the client has problems. It seems that for some reason,
> the cayenne web service+client works only with Jetty plugin. What can I do
> ?
>
> Thank you very much for your attention.
>
> TristanBelow is the stdout from client, the connection is fine, but I can't
> perform queries.19.06.2009 12:21:08
> org.apache.cayenne.remote.hessian.HessianConnection connect
> INFO: Connecting to [http://localhost:8080/reselleri/cayenne-service] -
> dedicated session.
> 19.06.2009 12:21:09 org.apache.cayenne.remote.hessian.HessianConnection
> connect
> INFO: === Connected, session:
> org.apache.cayenne.remote.RemoteSession@1de3f2d[sessionId=863r7x7r6ilu] -
> took 1125 ms.
> 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
> INFO: --- Message 0: Bootstrap
> 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
> INFO: === Message 0: Bootstrap done - took 391 ms.
> 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage
> INFO: --- Message 1: Query
> com.caucho.hessian.io.HessianProtocolException:
> at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java)
> at $Proxy0.processMessage(Unknown Source)
> at
> org.apache.cayenne.remote.hessian.HessianConnection.doSendMessage(HessianConnection.java:140)
> at
> org.apache.cayenne.remote.BaseConnection.sendMessage(BaseConnection.java:73)
> at org.apache.cayenne.remote.ClientChannel.send(ClientChannel.java:242)
> at
> org.apache.cayenne.remote.ClientChannel.onQuery(ClientChannel.java:88)
> at
> org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217)
> at
> org.apache.cayenne.CayenneContextQueryAction.execute(CayenneContextQueryAction.java:47)
> at org.apache.cayenne.CayenneContext.onQuery(CayenneContext.java:290)
> at
> org.apache.cayenne.CayenneContext.performQuery(CayenneContext.java:279)
> at com.distributie.client.FormPrincipal.Connect(FormPrincipal.java:170)
> at com.distributie.client.FormPrincipal.<init>(FormPrincipal.java:145)
> ----------skipped lines ------------
>
>
>
>