[JBoss Seam] - How to get a child/reference entity to load when the parent
by todd.nash＠gmail.com
I have created a user registration page following the example included with the seam booking example. The only difference is that my User entity has a reference to another entity called account. The user is mapped to an account.
My User class looks like this:
/**
| * User
| */
| @Entity
| @Table( name = "t_user", uniqueConstraints = @UniqueConstraint( columnNames = "username" ) )
| public class User implements java.io.Serializable
| {
| private int id;
| private Account account;
|
| [...]
|
|
| @Id
| @Column( name = "id", unique = true, nullable = false )
| @NotNull
| public int getId()
| {
| return this.id;
| }
|
| public void setId( int id )
| {
| this.id = id;
| }
|
| @ManyToOne( fetch = FetchType.LAZY )
| @JoinColumn( name = "account_id" )
| public Account getAccount()
| {
| return this.account;
| }
|
| public void setAccount( Account account )
| {
| this.account = account;
| }
|
| [...]
| }
My Registration class looks like this:
| @Stateless
| @Name("register")
| public class RegisterAction implements Register
| {
| @In
| private User user;
|
| @PersistenceContext
| private EntityManager em;
|
| @Logger
| private Log log;
|
| public String register()
| {
| List existing = em.createQuery(
| "select username from User where username=#{user.username}")
| .getResultList();
|
| if (existing.size()==0)
| {
| em.persist(user);
| log.info("Registered new user #{user.username}");
| return "/registered.xhtml";
| }
| else
| {
| FacesMessages.instance().add("User #{user.username} already exists");
| return null;
| }
| }
|
| }
Pretty straight forward. However when the JSF page is loaded and the user clicks on the register button after adding their information, I get a null pointer exception for Account because Seam instantiates the user component, and returns the resulting User entity bean instance to JSF after storing it in the Seam session context, but the Account component is never created.
I tried instantiating the Account class within my register class and setting the value on the User, but that resulted in a datasource exception when i persisted the user.
I have tried using the UserHome session bean, but the Account class is never added to the User class.
How do I go about instantiating and setting the Account on User?
I am missing something obvious here (could be because it is Friday and I am on my 70th hour). Any help would be appreciated.
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18 years, 4 months
[Beginners Corner] - Having occasional SocketExceptions when talking to JBoss 4.2
by eightmd
I tried to post this earlier but didn't see it show up. I apologize if it gets posted twice.
I'm not exactly new to JBoss but I've never dug down very deep into it. I've looked around and haven't been able to answer my question so any help would beappreciated.
I'm running some tests with my application in JBoss using httpClient 3.0.1 to send the URLs to Apache 2.2.6, which routes them to JBoss 4.2.2GA. Java release is 1.5.0.10. My client machine is running Linux 2.6.15.4 Fedora Core 3. The server running JBoss is running Linux 2.6.18-1.2869.fc6. I am running my testin Eclipse 3.1.0.
My test client is getting about 10% errors. Most of them are java.net.ConnectException: Connection refused but some are java.net.SocketException: Connection reset. When I look in the JBoss log I see it's getting some ClientAbortException: java.net.SocketException: Broken pipe.
Obviously JBoss is listening on the port and performs most of the requests. I am not hitting the server all that hard. My test client will see this happen when it sends a request every 5 seconds. The requests involve uploading a file. Maximum threads I'm allowing for JBoss is 200 and its only using around 18. I think Apache has around 200 but I'm not sure.
It looks like the server thinks the client is closing the connection at times. Looks like the client is getting the connection reset by the server (connection reset), and the server is not listening sometimes (connection refused).
If anyone has any ideas that I should try please let me know. Thanks in advance.
Server and client stack traces follow.
This is the stack trace from the JBoss server log:
23:37:01,973 ERROR [STDERR] ClientAbortException: java.net.SocketException: Broken pipe
23:37:01,974 ERROR [STDERR] at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358)
23:37:01,974 ERROR [STDERR] at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434)
23:37:01,974 ERROR [STDERR] at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:349)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83)
23:37:01,974 ERROR [STDERR] at com.convera.ews.commons.EWSUtils.sendDocument(EWSUtils.java:194)
23:37:01,974 ERROR [STDERR] at com.convera.ews.core.servlet.ExcaliburWSAdminServlet.doRequest(ExcaliburWSAdminServlet.java:323)
23:37:01,974 ERROR [STDERR] at com.convera.ews.core.servlet.ExcaliburWSAdminServlet.doGet(ExcaliburWSAdminServlet.java:684)
23:37:01,974 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
23:37:01,974 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
23:37:01,974 ERROR [STDERR] at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
23:37:01,974 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
23:37:01,975 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
23:37:01,975 ERROR [STDERR] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
23:37:01,975 ERROR [STDERR] at com.convera.ews.logging.valves.EWSAccessLogValve.invoke(EWSAccessLogValve.java:492)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
23:37:01,975 ERROR [STDERR] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
23:37:01,975 ERROR [STDERR] at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
23:37:01,975 ERROR [STDERR] at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)
23:37:01,975 ERROR [STDERR] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
23:37:01,975 ERROR [STDERR] at java.lang.Thread.run(Thread.java:595)
23:37:01,976 ERROR [STDERR] Caused by: java.net.SocketException: Broken pipe
23:37:01,976 ERROR [STDERR] at java.net.SocketOutputStream.socketWrite0(Native Method)
23:37:01,976 ERROR [STDERR] at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
23:37:01,976 ERROR [STDERR] at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
23:37:01,976 ERROR [STDERR] at org.apache.coyote.ajp.AjpProcessor$SocketOutputBuffer.doWrite(AjpProcessor.java:1210)
23:37:01,976 ERROR [STDERR] at org.apache.coyote.Response.doWrite(Response.java:560)
23:37:01,976 ERROR [STDERR] at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)
23:37:01,976 ERROR [STDERR] ... 30 more
This is 2 different stack traces from my client machine:
java.net.SocketException: Connection reset
ERROR: java.net.SocketException Connection reset
Executing GET for https://wsf-6.newco.com/ews/upload/20/deployStatus
Error while trying to get active job count. Error count = 808
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at com.sun.net.ssl.internal.ssl.InputRecord.readFully(InputRecord.java:284)
at com.sun.net.ssl.internal.ssl.InputRecord.read(InputRecord.java:319)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:720)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1025)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:619)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:827)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:1975)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:993)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:397)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)
at com.convera.ews.ApplicationTransfer.executeGet(ApplicationTransfer.java:383)
at com.convera.ews.ApplicationTransfer.executeAction(ApplicationTransfer.java:205)
at com.convera.ews.UploadDeployTest.checkForClearQueue(UploadDeployTest.java:450)
at com.convera.ews.UploadDeployTest.testBasedOnItems(UploadDeployTest.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Other stack trace ................
java.net.ConnectException: Connection refused
06:43:55,325 INFO [main] (HttpMethodDirector.java:438) - I/O exception (java.net.ConnectException) caught when processing request: Connection refused
06:43:55,326 INFO [main] (HttpMethodDirector.java:444) - Retrying request
06:43:55,327 INFO [main] (HttpMethodDirector.java:438) - I/O exception (java.net.ConnectException) caught when processing request: Connection refused
06:43:55,327 INFO [main] (HttpMethodDirector.java:444) - Retrying request
06:43:55,328 INFO [main] (HttpMethodDirector.java:438) - I/O exception (java.net.ConnectException) caught when processing request: Connection refused
06:43:55,328 INFO [main] (HttpMethodDirector.java:444) - Retrying request
ERROR: java.net.ConnectException Connection refused
Executing GET for https://wsf-6.newco.com/ews/upload/20/deployStatus
Error while trying to get active job count. Error count = 799
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:507)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:546)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.(SSLSocketImpl.java:390)
at com.sun.net.ssl.internal.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:121)
at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:81)
at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:126)
at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)
at com.convera.ews.ApplicationTransfer.executeGet(ApplicationTransfer.java:383)
at com.convera.ews.ApplicationTransfer.executeAction(ApplicationTransfer.java:205)
at com.convera.ews.UploadDeployTest.checkForClearQueue(UploadDeployTest.java:450)
at com.convera.ews.UploadDeployTest.testBasedOnItems(UploadDeployTest.java:329)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
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18 years, 4 months