On Tue, Oct 27, 2009 at 4:02 PM, Rick Curtis <[email protected]> wrote:
> Larry - > > I haven't used Intellij before so please excuse me if it seems that I'm > fumbling through the dark here... > > Do you see any information logged during the build process or prior to > running your application that has the following key "openjpa.Enhance"? Is > there any text that our enhancer ran, but didn't do any work (Search for > "enhance") ? I'm not seeing any reference to "enhance" in the build stage. The only JPA reference I've seen is text that says "Validating Persistence Module" or something to that effect. > What JPA operation were you invoking when you encounter the > exception above (ie : em.persist() ) ? Hopefully this gets us going in the > right direction. > > Yes, em.persist(); > Since you are new to OpenJPA, take a look at a blog post [1] I wrote a > while > back which talks about the enhancement process. > > [1] > http://webspherepersistence.blogspot.com/2009/02/openjpa-enhancement.html > > Thanks, > Rick > > On Tue, Oct 27, 2009 at 2:40 PM, Larry White <[email protected]> wrote: > > > Hi, > > > > I'm working on my first OpenJPA app using the plugin for Intellij Idea 8. > > I'm getting the error: > > > > <openjpa-1.2.1-r752877:753278 nonfatal user error> > > org.apache.openjpa.persistence.ArgumentException: Attempt to cast > instance > > "com.deathrayresearch.server.model.product.prod...@1c7e2da" to > > PersistenceCapable failed. Ensure that it has been enhanced. > > > > I don't know enough about the technology or the plug-in to know even > > generally what's going wrong. My understanding is that the plugin > performs > > the enhancement during each build, but I'm not seeing any errors during > the > > build process to indicate that it failed. > > > > FWIW, I have not created a table for "Product", under the assumption that > > it > > would be generated from the entity class definition. > > > > My entity class and persistence.xml are below. > > > > Thanks for your help > > > > ----------------------------------------------------- > > package com.deathrayresearch.server.model.product; > > import javax.persistence.*; > > import java.io.Serializable; > > > > @Entity > > public class Product implements Serializable { > > > > @Id > > @GeneratedValue(strategy = GenerationType.IDENTITY) > > private long id; > > > > @Basic > > @Column(nullable = false, length = 30) > > private String name; > > > > @Basic > > @Column(nullable = true, length = 30) > > private String description; > > > > public Product() { > > } > > > > public Product(String description, String name) { > > this.description = description; > > this.name = name; > > } > > > > public long getId() { > > return id; > > } > > > > public void setId(long id) { > > this.id = id; > > } > > > > public String getDescription() { > > return description; > > } > > > > public void setDescription(String description) { > > this.description = description; > > } > > > > public String getName() { > > return name; > > } > > > > public void setName(String name) { > > this.name = name; > > } > > } > > > > -------------------------------------------------- > > > > <?xml version="1.0" encoding="UTF-8"?> > > <persistence xmlns="http://java.sun.com/xml/ns/persistence"; > version="1.0"> > > > > <persistence-unit name="worldview"> > > > > > > > <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> > > <properties> > > <property name="openjpa.ConnectionURL" > > value="jdbc:postgresql:worldview"/> > > <property name="openjpa.ConnectionDriverName" > > value="org.postgresql.Driver"/> > > <property name="openjpa.ConnectionUserName" value="postgres"/> > > <property name="openjpa.ConnectionPassword" value="foobar"/> > > <property name="openjpa.Log" value="DefaultLevel=TRACE, > > Tool=INFO"/> > > </properties> > > </persistence-unit> > > >
