/*
*
* SchemaCrawler
* http://sourceforge.net/projects/schemacrawler
* Copyright (c) 2000-2013, 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.utility;
import schemacrawler.schema.Column;
/**
* SchemaCrawler utility methods.
*
* @author sfatehi
*/
public final class MetaDataUtility
{
public enum Connectivity
{
unknown,
zero_one,
zero_many,
one_one;
}
public static Connectivity getConnectivity(final Column fkColumn)
{
if (fkColumn == null)
{
return Connectivity.unknown;
}
boolean isColumnReference;
try
{
fkColumn.getColumnDataType();
isColumnReference = false;
}
catch (final Exception e)
{
isColumnReference = true;
}
if (isColumnReference)
{
return Connectivity.unknown;
}
if (fkColumn.isPartOfPrimaryKey() || fkColumn.isPartOfUniqueIndex())
{
return Connectivity.zero_one;
}
else
{
return Connectivity.zero_many;
}
}
private MetaDataUtility()
{
// Prevent instantiation
}
}