Package org.hibernate.collection.internal

Source Code of org.hibernate.collection.internal.PersistentMapElementHolder

/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008-2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors.  All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA  02110-1301  USA
*/
package org.hibernate.collection.internal;

import java.io.Serializable;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.type.Type;
import org.hibernate.type.XmlRepresentableType;

import org.dom4j.Element;

/**
* Wraps a collection of DOM sub-elements as a Map
*
* @author Gavin King
*
* @deprecated To be removed in 5.  Removed as part of removing the notion of DOM entity-mode.  See Jira issues
* <a href="https://hibernate.onjira.com/browse/HHH-7782">HHH-7782</a> and
* <a href="https://hibernate.onjira.com/browse/HHH-7783">HHH-7783</a> for more information.
*/
@SuppressWarnings({"UnusedDeclaration", "deprecation"})
@Deprecated
public class PersistentMapElementHolder extends PersistentIndexedElementHolder {

  /**
   * Constructs a PersistentMapElementHolder.
   *
   * @param session The session
   * @param element The owning DOM element
   */
  public PersistentMapElementHolder(SessionImplementor session, Element element) {
    super( session, element );
  }

  /**
   * Constructs a PersistentMapElementHolder.
   *
   * @param session The session
   * @param persister The collection persister
   * @param key The collection key (fk value)
   */
  public PersistentMapElementHolder(SessionImplementor session, CollectionPersister persister, Serializable key) {
    super( session, persister, key );
  }

  @Override
  @SuppressWarnings("unchecked")
  public void initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner) {
    final Type elementType = persister.getElementType();
    final Type indexType = persister.getIndexType();
    final String indexNodeName = getIndexAttributeName( persister );

    final Serializable[] cached = (Serializable[]) disassembled;
    int i = 0;
    while ( i < cached.length ) {
      final Object index = indexType.assemble( cached[i++], getSession(), owner );
      final Object object = elementType.assemble( cached[i++], getSession(), owner );

      final Element subElement = element.addElement( persister.getElementNodeName() );
      elementType.setToXMLNode( subElement, object, persister.getFactory() );

      final String indexString = ( (XmlRepresentableType) indexType ).toXMLString( index, persister.getFactory() );
      setIndex( subElement, indexNodeName, indexString );
    }
  }

  @Override
  @SuppressWarnings("unchecked")
  public Serializable disassemble(CollectionPersister persister) throws HibernateException {
    final Type elementType = persister.getElementType();
    final Type indexType = persister.getIndexType();
    final String indexNodeName = getIndexAttributeName( persister );

    final List elements =  element.elements( persister.getElementNodeName() );
    final int length = elements.size();
    final Serializable[] result = new Serializable[length*2];
    int i = 0;
    while ( i < length*2 ) {
      final Element elem = (Element) elements.get( i/2 );
      final Object object = elementType.fromXMLNode( elem, persister.getFactory() );
      final String indexString = getIndex( elem, indexNodeName, i );
      final Object index = ( (XmlRepresentableType) indexType ).fromXMLString( indexString, persister.getFactory() );
      result[i++] = indexType.disassemble( index, getSession(), null );
      result[i++] = elementType.disassemble( object, getSession(), null );
    }
    return result;
  }
}
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