/*
*
* SchemaCrawler
* http://sourceforge.net/projects/schemacrawler
* Copyright (c) 2000-2010, Sualeh Fatehi.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
package schemacrawler.build;
import schemacrawler.schema.Column;
import schemacrawler.schema.ColumnMap;
import schemacrawler.schema.ForeignKeyColumnMap;
/**
* Represents a single column mapping from a primary key column to a
* foreign key column.
*
* @author Sualeh Fatehi
*/
final class ForeignKeyColumnMapMetadata
extends BaseColumnMap
implements ForeignKeyColumnMap
{
public final static class ForeignKeyColumnMapBuilder
extends BaseColumnMapBuilder
{
private int keySequence;
ForeignKeyColumnMap build()
{
return new ForeignKeyColumnMapMetadata(this);
}
public int getKeySequence()
{
return keySequence;
}
public void setKeySequence(final int keySequence)
{
this.keySequence = keySequence;
}
}
private static final long serialVersionUID = 3689073962672273464L;
private final Column foreignKeyColumn;
private final Column primaryKeyColumn;
private final int keySequence;
private ForeignKeyColumnMapMetadata(final ForeignKeyColumnMapBuilder builder)
{
super(builder);
primaryKeyColumn = builder.getPrimaryKeyColumn();
foreignKeyColumn = builder.getForeignKeyColumn();
keySequence = builder.keySequence;
}
/**
* {@inheritDoc}
*/
@Override
public int compareTo(final ColumnMap obj)
{
if (obj == null)
{
return -1;
}
final ForeignKeyColumnMap other = (ForeignKeyColumnMap) obj;
int comparison = 0;
if (comparison == 0)
{
comparison = getKeySequence() - other.getKeySequence();
}
// Note: For the primary key and foreign key columns, compare by
// name.
if (comparison == 0)
{
comparison = getPrimaryKeyColumn().getFullName().compareTo(other
.getPrimaryKeyColumn().getFullName());
}
if (comparison == 0)
{
comparison = getForeignKeyColumn().getFullName().compareTo(other
.getForeignKeyColumn().getFullName());
}
return comparison;
}
/**
* {@inheritDoc}
*
* @see schemacrawler.schema.ForeignKeyColumnMap#getForeignKeyColumn()
*/
public Column getForeignKeyColumn()
{
return foreignKeyColumn;
}
/**
* {@inheritDoc}
*
* @see schemacrawler.schema.ForeignKeyColumnMap#getKeySequence()
*/
public int getKeySequence()
{
return keySequence;
}
/**
* {@inheritDoc}
*
* @see schemacrawler.schema.ForeignKeyColumnMap#getPrimaryKeyColumn()
*/
public Column getPrimaryKeyColumn()
{
return primaryKeyColumn;
}
}