/*
*
* 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.Column;
import schemacrawler.schema.Table;
import schemacrawler.schema.View;
import schemacrawler.tools.lint.BaseLinter;
public class LinterUselessSurrogateKey
extends BaseLinter
{
@Override
public String getDescription()
{
return getSummary();
}
@Override
public String getSummary()
{
return "useless surrogate key";
}
@Override
protected void lint(final Table table)
{
if (table == null)
{
throw new IllegalArgumentException("No table provided");
}
if (hasUselessSurrogateKey(table))
{
addLint(table, getSummary(), table.getPrimaryKey());
}
}
private boolean hasUselessSurrogateKey(final Table table)
{
if (!(table instanceof View) && table.getPrimaryKey() != null)
{
boolean hasUselessSurrogateKey = true;
for (final Column column: table.getColumns())
{
if (column.isPartOfPrimaryKey())
{
continue;
}
if (!column.isPartOfForeignKey())
{
hasUselessSurrogateKey = false;
break;
}
}
return hasUselessSurrogateKey;
}
return false;
}
}