/*
*
* SchemaCrawler
* http://sourceforge.net/projects/schemacrawler
* Copyright (c) 2000-2012, 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.tools.linter;
import schemacrawler.schema.ForeignKey;
import schemacrawler.schema.ForeignKeyColumnMap;
import schemacrawler.schema.Table;
import schemacrawler.tools.lint.BaseLinter;
import sf.util.DirectedGraph;
public class LinterTableCycles
extends BaseLinter
{
private DirectedGraph<Table> tablesGraph;
@Override
public String getDescription()
{
return getSummary();
}
@Override
public String getSummary()
{
return "cycles in table relationships";
}
@Override
protected void end()
{
if (tablesGraph == null)
{
throw new IllegalArgumentException("Not initialized");
}
if (tablesGraph.containsCycle())
{
addLint(getSummary(), Boolean.TRUE);
}
tablesGraph = null;
super.end();
}
@Override
protected void lint(final Table table)
{
if (table == null)
{
throw new IllegalArgumentException("No table provided");
}
if (tablesGraph == null)
{
throw new IllegalArgumentException("Not initialized");
}
tablesGraph.addVertex(table);
final ForeignKey[] foreignKeys = table.getForeignKeys();
for (final ForeignKey foreignKey: foreignKeys)
{
final ForeignKeyColumnMap[] columnPairs = foreignKey.getColumnPairs();
for (final ForeignKeyColumnMap columnPair: columnPairs)
{
tablesGraph.addDirectedEdge(columnPair.getPrimaryKeyColumn()
.getParent(), columnPair.getForeignKeyColumn().getParent());
}
}
}
@Override
protected void start()
{
super.start();
tablesGraph = new DirectedGraph<Table>();
}
}