/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* 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;
* version 2.1 of the License.
*
* 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.
*
* Created on 23 October 2002, 17:19
*/
package org.geotools.filter;
import org.opengis.filter.FilterFactory;
/**
* Abstract filter implementation provides or and and methods for child filters
* to use.
*
* @author Ian Turton, CCG
*
* @source $URL$
* @version $Id$
*/
public abstract class AbstractFilterImpl
extends org.geotools.filter.AbstractFilter {
protected AbstractFilterImpl(FilterFactory factory) {
super(factory);
}
/**
* Default implementation for OR - should be sufficient for most filters.
*
* @param filter Parent of the filter: must implement GMLHandlerGeometry.
*
* @return ORed filter.
*/
public Filter or(org.opengis.filter.Filter filter) {
try {
return (Filter) factory.or(this,filter);
} catch (IllegalFilterException ife) {
return (Filter) filter;
}
}
/**
* Default implementation for AND - should be sufficient for most filters.
*
* @param filter Parent of the filter: must implement GMLHandlerGeometry.
*
* @return ANDed filter.
*/
public Filter and(org.opengis.filter.Filter filter) {
try {
return (Filter) factory.and(this, filter);
} catch (IllegalFilterException ife) {
return (Filter) filter;
}
}
/**
* Default implementation for NOT - should be sufficient for most filters.
*
* @return NOTed filter.
*/
public Filter not() {
try {
return (Filter) factory.not( this );
} catch (IllegalFilterException ife) {
return this;
}
}
}