Hi folks,
I have some strange problem with linkFilter. My code:
@Entity
@Table(name="writer")
public class Writer {
@Id
@GeneratedValue
@Column(name="id")
private Integer key;
@Column(name="name")
private String name;
@OneToMany(mappedBy="writer")
private Set<Book> books;
//.. getter and setter for properties
}
@Entity
@Table(name="book")
public class Book {
@Id
@GeneratedValue
@Column(name="id")
protected Long id;
@Column(name="title")
protected String title;
@Column(name="pages")
protected Integer pages;
@Enumerated(EnumType.STRING)
protected BookCategory category;
@ManyToOne
@JoinColumn(name="writer_id")
protected Writer writer;
//..getter and setter for properties
}
These both classes are JPA entities. Without LinkFilter it works fine, but if I add com.sun.jersey.server.linking.LinkFilter to my filter change, and call WriterResource, which returns Writer instance, I get an error:
Dec 17, 2012 9:22:01 PM com.sun.jersey.server.impl.application.WebApplicationImpl _handleRequest
SEVERE: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
java.lang.ClassCastException: java.lang.reflect.Constructor cannot be cast to org.hibernate.tuple.entity.Dom4jEntityTuplizer$BasicEntityNameResolver
at org.hibernate.tuple.entity.Dom4jEntityTuplizer$BasicEntityNameResolver.equals(Dom4jEntityTuplizer.java:224)
at java.util.HashMap.getEntry(HashMap.java:448)
at java.util.HashMap.containsKey(HashMap.java:434)
at java.util.HashSet.contains(HashSet.java:201)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:85)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:107)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:107)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:107)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processMember(RefProcessor.java:120)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:113)
at com.sun.jersey.server.linking.impl.RefProcessor.processLinks(RefProcessor.java:72)
at com.sun.jersey.server.linking.LinkFilter.filter(LinkFilter.java:78)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1432)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1360)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1350)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
at com.google.inject.persist.PersistFilter.doFilter(PersistFilter.java:89)
at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
If I comment out books property in Writer class with OneToMany relationship — no problem, linkFilter works as expected. Did LinkFilter has some problem with relationships or with JPA?
Thanks for help,
Artem.