Package org.hibernate.tuple.component

Source Code of org.hibernate.tuple.component.ComponentEntityModeToTuplizerMapping

/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.tuple.component;

import org.hibernate.tuple.EntityModeToTuplizerMapping;
import org.hibernate.tuple.Tuplizer;
import org.hibernate.mapping.Component;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.EntityMode;

import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.io.Serializable;

/**
* Handles mapping {@link EntityMode}s to {@link ComponentTuplizer}s.
* <p/>
* Most of the handling is really in the super class; here we just create
* the tuplizers and add them to the superclass
*
* @author Steve Ebersole
*/
class ComponentEntityModeToTuplizerMapping extends EntityModeToTuplizerMapping implements Serializable {

  // todo : move this to SF per HHH-3517; also see HHH-1907 and ComponentMetamodel
  private ComponentTuplizerFactory componentTuplizerFactory = new ComponentTuplizerFactory();

  public ComponentEntityModeToTuplizerMapping(Component component) {
    PersistentClass owner = component.getOwner();

    // create our own copy of the user-supplied tuplizer impl map
    Map userSuppliedTuplizerImpls = new HashMap();
    if ( component.getTuplizerMap() != null ) {
      userSuppliedTuplizerImpls.putAll( component.getTuplizerMap() );
    }

    // Build the dynamic-map tuplizer...
    Tuplizer dynamicMapTuplizer;
    String tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP );
    if ( tuplizerClassName == null ) {
      dynamicMapTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.MAP, component );
    }
    else {
      dynamicMapTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component );
    }

    // then the pojo tuplizer, using the dynamic-map tuplizer if no pojo representation is available
    tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO );
    Tuplizer pojoTuplizer;
    if ( owner.hasPojoRepresentation() && component.hasPojoRepresentation() ) {
      if ( tuplizerClassName == null ) {
        pojoTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.POJO, component );
      }
      else {
        pojoTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component );
      }
    }
    else {
      pojoTuplizer = dynamicMapTuplizer;
    }

    // then dom4j tuplizer, if dom4j representation is available
    Tuplizer dom4jTuplizer;
    tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J );
    if ( owner.hasDom4jRepresentation() ) {
      if ( tuplizerClassName == null ) {
        dom4jTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.DOM4J, component );
      }
      else {
        dom4jTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component );
      }
    }
    else {
      dom4jTuplizer = null;
    }

    // put the "standard" tuplizers into the tuplizer map first
    if ( pojoTuplizer != null ) {
      addTuplizer( EntityMode.POJO, pojoTuplizer );
    }
    if ( dynamicMapTuplizer != null ) {
      addTuplizer( EntityMode.MAP, dynamicMapTuplizer );
    }
    if ( dom4jTuplizer != null ) {
      addTuplizer( EntityMode.DOM4J, dom4jTuplizer );
    }

    // then handle any user-defined entity modes...
    if ( !userSuppliedTuplizerImpls.isEmpty() ) {
      Iterator itr = userSuppliedTuplizerImpls.entrySet().iterator();
      while ( itr.hasNext() ) {
        final Map.Entry entry = ( Map.Entry ) itr.next();
        final EntityMode entityMode = ( EntityMode ) entry.getKey();
        final String userTuplizerClassName = ( String ) entry.getValue();
        ComponentTuplizer tuplizer = componentTuplizerFactory.constructTuplizer( userTuplizerClassName, component );
        addTuplizer( entityMode, tuplizer );
      }
    }
  }
}
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