package org.hibernate.test.usercollection.parameterized;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.List;
import org.hibernate.usertype.UserCollectionType;
import org.hibernate.usertype.ParameterizedType;
import org.hibernate.collection.PersistentCollection;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.EntityMode;
/**
* Our Hibernate type-system extension for defining our specialized collection
* contract.
*
* @author Holger Brands
* @author Steve Ebersole
*/
public class DefaultableListType implements UserCollectionType, ParameterizedType {
private String defaultValue;
public Object instantiate(int anticipatedSize) {
DefaultableListImpl list = anticipatedSize < 0 ? new DefaultableListImpl() : new DefaultableListImpl( anticipatedSize );
list.setDefaultValue( defaultValue );
return list;
}
public PersistentCollection instantiate(
SessionImplementor session,
CollectionPersister persister) {
return new PersistentDefaultableList( session );
}
public PersistentCollection wrap(SessionImplementor session, Object collection) {
if ( session.getEntityMode() == EntityMode.DOM4J ) {
throw new IllegalStateException( "dom4j not supported" );
}
else {
return new PersistentDefaultableList( session, ( List ) collection );
}
}
public Iterator getElementsIterator(Object collection) {
return ( ( DefaultableList ) collection ).iterator();
}
public boolean contains(Object collection, Object entity) {
return ( ( DefaultableList ) collection ).contains( entity );
}
public Object indexOf(Object collection, Object entity) {
int index = ( ( DefaultableList ) collection ).indexOf( entity );
return index >= 0 ? new Integer( index ) : null;
}
public Object replaceElements(
Object original,
Object target,
CollectionPersister persister,
Object owner,
Map copyCache,
SessionImplementor session) {
DefaultableList result = ( DefaultableList ) target;
result.clear();
result.addAll( ( DefaultableList ) original );
return result;
}
public void setParameterValues(Properties parameters) {
defaultValue = parameters.getProperty( "default" );
}
}
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