Package org.hibernate.mapping

Source Code of org.hibernate.mapping.DenormalizedTable

/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.mapping;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.hibernate.internal.util.collections.JoinedIterator;

/**
* @author Gavin King
*/
public class DenormalizedTable extends Table {
 
  private final Table includedTable;
 
  public DenormalizedTable(Table includedTable) {
    this.includedTable = includedTable;
    includedTable.setHasDenormalizedTables();
  }
 
  @Override
    public void createForeignKeys() {
    includedTable.createForeignKeys();
    Iterator iter = includedTable.getForeignKeyIterator();
    while ( iter.hasNext() ) {
      ForeignKey fk = (ForeignKey) iter.next();
      createForeignKey(
          Constraint.generateName( fk.generatedConstraintNamePrefix(), this, fk.getColumns() ),
          fk.getColumns(),
          fk.getReferencedEntityName(),
          fk.getReferencedColumns()
        );
    }
  }

  @Override
    public Column getColumn(Column column) {
    Column superColumn = super.getColumn( column );
    if (superColumn != null) {
      return superColumn;
    }
    else {
      return includedTable.getColumn( column );
    }
  }

  @Override
    public Iterator getColumnIterator() {
    return new JoinedIterator(
        includedTable.getColumnIterator(),
        super.getColumnIterator()
      );
  }

  @Override
    public boolean containsColumn(Column column) {
    return super.containsColumn(column) || includedTable.containsColumn(column);
  }

  @Override
    public PrimaryKey getPrimaryKey() {
    return includedTable.getPrimaryKey();
  }

  @Override
    public Iterator getUniqueKeyIterator() {
    Iterator iter = includedTable.getUniqueKeyIterator();
    while ( iter.hasNext() ) {
      UniqueKey uk = (UniqueKey) iter.next();
      createUniqueKey( uk.getColumns() );
    }
    return getUniqueKeys().values().iterator();
  }

  @Override
    public Iterator getIndexIterator() {
    List indexes = new ArrayList();
    Iterator iter = includedTable.getIndexIterator();
    while ( iter.hasNext() ) {
      Index parentIndex = (Index) iter.next();
      Index index = new Index();
      index.setName( getName() + parentIndex.getName() );
      index.setTable(this);
      index.addColumns( parentIndex.getColumnIterator() );
      indexes.add( index );
    }
    return new JoinedIterator(
        indexes.iterator(),
        super.getIndexIterator()
      );
  }

}
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