/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
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
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.model.filterencoding;
import org.w3c.dom.Element;
/**
* Encapsulates the information of a comparison_ops entity (as defined in the
* Filter DTD).
*
* @author Markus Schneider
* @version 06.08.2002
*/
public abstract class ComparisonOperation extends AbstractOperation {
ComparisonOperation(int operationId) {
super(operationId);
}
/**
* Given a DOM-fragment, a corresponding Operation-object is built. This
* method recursively calls other buildFromDOM () - methods to validate the
* structure of the DOM-fragment.
*
* @throws FilterConstructionException
* if the structure of the DOM-fragment is invalid
*/
public static Operation buildFromDOM(Element element)
throws FilterConstructionException {
// check if root element's name is a known operator
String name = element.getLocalName();
int operatorId = OperationDefines.getIdByName(name);
ComparisonOperation operation = null;
switch (operatorId) {
case OperationDefines.PROPERTYISEQUALTO:
case OperationDefines.PROPERTYISLESSTHAN:
case OperationDefines.PROPERTYISGREATERTHAN:
case OperationDefines.PROPERTYISLESSTHANOREQUALTO:
case OperationDefines.PROPERTYISGREATERTHANOREQUALTO:
{
operation = (ComparisonOperation) PropertyIsCOMPOperation
.buildFromDOM(element);
break;
}
case OperationDefines.PROPERTYISLIKE:
{
operation = (ComparisonOperation) PropertyIsLikeOperation
.buildFromDOM(element);
break;
}
case OperationDefines.PROPERTYISNULL:
{
operation = (ComparisonOperation) PropertyIsNullOperation
.buildFromDOM(element);
break;
}
case OperationDefines.PROPERTYISBETWEEN:
{
operation = (ComparisonOperation) PropertyIsBetweenOperation
.buildFromDOM(element);
break;
}
default:
{
throw new FilterConstructionException("'" + name
+ "' is not a comparison operator!");
}
}
return operation;
}
}/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: ComparisonOperation.java,v $
Revision 1.5 2006/07/12 14:46:14 poth
comment footer added
********************************************************************** */