//$Id: OneToMany.java 7246 2005-06-20 20:32:36Z oneovthafew $package org.hibernate.mapping;import java.util.Iterator;import org.hibernate.FetchMode;import org.hibernate.MappingException;import org.hibernate.engine.Mapping;import org.hibernate.type.EntityType;import org.hibernate.type.Type;import org.hibernate.type.TypeFactory;/** * A mapping for a one-to-many association * @author Gavin King */public class OneToMany implements Value {	private String referencedEntityName;	private Table referencingTable;	private PersistentClass associatedClass;	private boolean embedded;	private boolean ignoreNotFound;	private EntityType getEntityType() {		return TypeFactory.manyToOne(				getReferencedEntityName(), 				null, 				false,				false,				isEmbedded(),				isIgnoreNotFound()			);	}	public OneToMany(PersistentClass owner) throws MappingException {		this.referencingTable = (owner==null) ? null : owner.getTable();	}	public PersistentClass getAssociatedClass() {		return associatedClass;	}    /**     * Associated entity on the many side     */	public void setAssociatedClass(PersistentClass associatedClass) {		this.associatedClass = associatedClass;	}	public void createForeignKey() {		// no foreign key element of for a one-to-many	}	public Iterator getColumnIterator() {		return associatedClass.getKey().getColumnIterator();	}	public int getColumnSpan() {		return associatedClass.getKey().getColumnSpan();	}	public FetchMode getFetchMode() {		return FetchMode.JOIN;	}    /**      * Table of the owner entity (the "one" side)     */	public Table getTable() {		return referencingTable;	}	public Type getType() {		return getEntityType();	}	public boolean isNullable() {		return false;	}	public boolean isSimpleValue() {		return false;	}	public boolean isAlternateUniqueKey() {		return false;	}	public boolean hasFormula() {		return false;	}		public boolean isValid(Mapping mapping) throws MappingException {		if (referencedEntityName==null) {			throw new MappingException("one to many association must specify the referenced entity");		}		return true;	}    public String getReferencedEntityName() {		return referencedEntityName;	}    /**      * Associated entity on the "many" side     */    	public void setReferencedEntityName(String referencedEntityName) {		this.referencedEntityName = referencedEntityName==null ? null : referencedEntityName.intern();	}	public void setTypeUsingReflection(String className, String propertyName) {}		public Object accept(ValueVisitor visitor) {		return visitor.accept(this);	}			public boolean[] getColumnInsertability() {		//TODO: we could just return all false...		throw new UnsupportedOperationException();	}		public boolean[] getColumnUpdateability() {		//TODO: we could just return all false...		throw new UnsupportedOperationException();	}		public boolean isEmbedded() {		return embedded;	}		public void setEmbedded(boolean embedded) {		this.embedded = embedded;	}	public boolean isIgnoreNotFound() {		return ignoreNotFound;	}	public void setIgnoreNotFound(boolean ignoreNotFound) {		this.ignoreNotFound = ignoreNotFound;	}	}