[hibernate-issues] [Hibernate-JIRA] Created: (ANN-491) Collection mapped with javax.persistence.MapKey isn't loaded properly.

[Magnus Heino (JIRA)]

Collection mapped with javax.persistence.MapKey isn't loaded properly.
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         Key: ANN-491
         URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-491
     Project: Hibernate Annotations
        Type: Bug

    Versions: 3.2.0.ga    
    Reporter: Magnus Heino


http://forum.hibernate.org/viewtopic.php?t=966948

Add this test to IndexedCollectionTest.java:

	public void testMapKeyLoad() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Software hibernate = new Software();
		hibernate.setName( "Hibernate" );
		Version v1 = new Version();
		v1.setCodeName( "HumbaHumba" );
		v1.setNumber( "1.0" );
		v1.setSoftware( hibernate );
		hibernate.addVersion(v1);
		s.persist(hibernate);
		s.persist(v1);
		tx.commit();
		s.clear();
		tx = s.beginTransaction();
		hibernate = (Software) s.get( Software.class, "Hibernate" );
		Version v2 = new Version();
		v2.setCodeName( "HumbaHumba" );
		v2.setNumber( "2.0" );
		v2.setSoftware( hibernate );
		hibernate.addVersion(v2);
		assertEquals("One loaded persisted version, and one just added", 2, hibernate.getVersions().size() );
		tx.commit();
		s.clear();
		tx = s.beginTransaction();
		hibernate = (Software) s.get( Software.class, "Hibernate" );
		for ( Version v : hibernate.getVersions().values() ) {
			s.delete( v );
		}
		s.delete( hibernate );
		tx.commit();
		s.close();	
	}



And modify Software.java to look like this:

//$Id: Software.java 9795 2006-04-26 06:41:18Z epbernard $
package org.hibernate.test.annotations.indexcoll;

import java.util.HashMap;
import java.util.Map;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.MapKey;
import javax.persistence.OneToMany;

/**
 * @author Emmanuel Bernard
 */
@Entity
public class Software {
	private String name;
	private Map<String, Version> versions;

	public Software() {
		this.versions = new HashMap<String, Version>();
	}
	
	@Id
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	@OneToMany(mappedBy = "software")
	@MapKey(name = "codeName")
	public Map<String, Version> getVersions() {
		return versions;
	}

	public void setVersions(Map<String, Version> versions) {
		this.versions = versions;
	}
	
	public void addVersion(Version version) {
		this.getVersions().put(version.getCodeName(), version);
	}
}


AFAIK addVersion should be able to do this.version.put too if you read the spec, but it doesn't work with the getter as it is now either.

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