/*
This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2010 Servoy BV
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option) any
later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along
with this program; if not, see http://www.gnu.org/licenses or write to the Free
Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*/
package com.servoy.j2db.query;
import java.util.ArrayList;
import java.util.List;
import com.servoy.j2db.util.serialize.ReplacedObject;
/**
* Query condition consisting of conditions to be OR-ed.
* @author rgansevles
*
*/
public final class OrCondition extends AndOrCondition
{
public OrCondition()
{
super();
}
public OrCondition(List<ISQLCondition> conditions)
{
super(conditions);
}
@Override
public String getInfix()
{
return "or"; //$NON-NLS-1$
}
@Override
public ISQLCondition negate()
{
// apply De Morgan's laws
List<ISQLCondition> nconditions = new ArrayList<ISQLCondition>(conditions.size());
for (int i = 0; i < conditions.size(); i++)
{
nconditions.add((ISQLCondition)conditions.get(i).negate());
}
return new AndCondition(nconditions);
}
/**
* Combine 2 conditions in an OrCondition.
* @param c1
* @param c2
* @return
*/
public static ISQLCondition or(ISQLCondition c1, ISQLCondition c2)
{
if (c1 == null)
{
return c2;
}
if (c2 == null)
{
return c1;
}
OrCondition or = new OrCondition();
or.addCondition(c1);
or.addCondition(c2);
return or;
}
///////// serialization ////////////////
public OrCondition(ReplacedObject s)
{
super(s);
}
}