[Hibernate-issues] [Hibernate-JIRA] Created: (HB-513) QueryException using composite elements

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  A new issue has been created in JIRA.

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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-513


Here is an overview of the issue:
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        Key: HB-513
    Summary: QueryException using composite elements
       Type: Bug

     Status: Unassigned
   Priority: Minor

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.1 rc1

   Assignee: 
   Reporter: Matt Read

    Created: Mon, 1 Dec 2003 4:14 PM
    Updated: Mon, 1 Dec 2003 4:14 PM
Environment: Hibernate 2.1rc1
Sun JDK 1.4.2_01 on Windows XP

Description:
See also: http://forum.hibernate.org/viewtopic.php?t=924854

I've tried to make this as simple as possible but I can't find any guidelines on exactly what that means. I've included everything I think is needed to recreate the problem but I can probably make up a standalone jar if absolutely necessary. Let me know if this would be useful.

Here's 2 Java classes with XDoclet markup, EntityA is a standard entity and AssocationForA is a component used in the many-to-many assocation from Entity to itself.

/*
 * Created on 17-Nov-2003
 *
 */
package gatt.example;

import java.util.HashSet;
import java.util.Set;

/**
 * @hibernate.class       table="EntityA"
 *                        proxy = "gatt.example.EntityA"
 * 
 */
public class EntityA {

    long id;
	protected Set association = new HashSet();
    
    /**
     * @return
     * 
     * @hibernate.id    column="id"
     *                  generator-class="increment"
     *                  unsaved-value="0"
     * 
     */
    public long getId() {
        return id;
    }
    
    public void setId(long id) {
        this.id = id;
    }

	/**
	 * 
	 * @hibernate.set                       cascade="all"
	 *                                      lazy="true"
	 *                                      table="Association_To_Self"
	 * @hibernate.collection-key            column="entityA_id"
	 * @hibernate.collection-composite-element class="gatt.example.AssociationForA" 
	 * 
	 * @return
	 */
	public Set getAssociation() {

		return association;

	}
	
	/**
	 * 
	 * @param associationForA
	 */
	public void setAssociation(Set associationForA) {
		this.association = associationForA;
	}

}

/*
 * Created on 17-Nov-2003
 *
 */
package gatt.example;

import java.util.Date;

/**
 * @hibernate.component
 * 
 * @author Gatt
 *
 */
public class AssociationForA {

	protected Date date;
	protected EntityA reverseAssociation;
	
	/**
	 * @hibernate.property
	 * 
	 * @return Returns the date.
	 */
	public Date getDate() {
		return date;
	}

	/**
	 * @param date The date to set.
	 */
	public void setDate(Date date) {
		this.date = date;
	}
	
	/**
	 * @hibernate.many-to-one column="association_id"
	 * 						  not-null="true"
	 *                        cascade="save-update"
	 * 
	 * @return Returns the associated instance.
	 */
	public EntityA getReverseAssociation() {
		return reverseAssociation;
	}
	
	/**
	 * @param attackedBy The attackedBy to set.
	 */
	public void setReverseAssociation(EntityA reverseAssociation) {
		this.reverseAssociation = reverseAssociation;
	}
}


Here is the generated mapping file:


<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 2.0//EN" 
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">

<hibernate-mapping>
    <class
        name="gatt.example.EntityA"
        table="EntityA"
        proxy="gatt.example.EntityA"
        dynamic-update="false"
        dynamic-insert="false"
    >

        <id
            name="id"
            column="id"
            type="long"
            unsaved-value="0"
        >
            <generator class="increment">
            </generator>
        </id>

        <set
            name="association"
            table="Association_To_Self"
            lazy="true"
            inverse="false"
            cascade="all"
            sort="unsorted"
        >

              <key
                  column="entityA_id"
              />

              <composite-element
                  class="gatt.example.AssociationForA"
              >
        <property
            name="date"
            type="java.util.Date"
            update="true"
            insert="true"
            column="date"
        />

        <many-to-one
            name="reverseAssociation"
            class="gatt.example.EntityA"
            cascade="save-update"
            outer-join="auto"
            update="true"
            insert="true"
            column="association_id"
            not-null="true"
        />

              </composite-element>

        </set>

        <!--
            To add non XDoclet property mappings, create a file named
                hibernate-properties-EntityA.xml
            containing the additional properties and place it in your merge dir.
        -->

    </class>

</hibernate-mapping>



And here is the test class:


/*
 * Created on Dec 1, 2003
 *  
 */
package gatt.example;

import gatt.util.hibernate.HibernateFilter;
import junit.framework.TestCase;
import net.sf.hibernate.Query;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;

/**
 * @author Gatt
 *  
 */
public class EntityATest extends TestCase {

	public static void main(String[] args) {
		junit.textui.TestRunner.run(EntityATest.class);
	}

	protected void setUp() throws Exception {
		super.setUp();
	}

	protected void tearDown() throws Exception {
		super.tearDown();
	}

	/**
	 * Constructor for EntityATest.
	 * 
	 * @param arg0
	 */
	public EntityATest(String arg0) {
		super(arg0);
	}

	public void testQuery() {

		try {
			SessionFactory sf = HibernateFilter.getSessionFactory();
			Session session = sf.openSession();

			// get the number of associations
			Query query = session.createQuery("select count(assoc) from EntityA entityA "
					+ "join entityA.association assoc");
			int count = ((Integer) query.iterate().next()).intValue();
			
		} catch (Exception e) {
			e.printStackTrace();
		}

	}
}


And finally the error:


net.sf.hibernate.QueryException: could not resolve property: id of: gatt.example.AssociationForA [select count(assoc) from gatt.example.EntityA entityA join entityA.association assoc]
	at net.sf.hibernate.persister.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:38)
	at net.sf.hibernate.collection.AbstractCollectionPersister.toType(AbstractCollectionPersister.java:678)
	at net.sf.hibernate.hql.PathExpressionParser.getPropertyType(PathExpressionParser.java:244)
	at net.sf.hibernate.hql.PathExpressionParser.end(PathExpressionParser.java:283)
	at net.sf.hibernate.hql.ParserHelper.parse(ParserHelper.java:30)
	at net.sf.hibernate.hql.SelectParser.token(SelectParser.java:140)
	at net.sf.hibernate.hql.ClauseParser.token(ClauseParser.java:87)
	at net.sf.hibernate.hql.ClauseParser.end(ClauseParser.java:114)
	at net.sf.hibernate.hql.PreprocessingParser.end(PreprocessingParser.java:143)
	at net.sf.hibernate.hql.ParserHelper.parse(ParserHelper.java:30)
	at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:152)
	at net.sf.hibernate.hql.QueryTranslator.compile(QueryTranslator.java:141)
	at net.sf.hibernate.impl.SessionFactoryImpl.getQuery(SessionFactoryImpl.java:287)
	at net.sf.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1488)
	at net.sf.hibernate.impl.SessionImpl.iterate(SessionImpl.java:1518)
	at net.sf.hibernate.impl.QueryImpl.iterate(QueryImpl.java:33)
	at gatt.example.EntityATest.testQuery(EntityATest.java:49)
	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:324)
	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:395)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:279)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:171)



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