/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* 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
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.revolsys.geometry.test.geomop;
import com.revolsys.geometry.model.Geometry;
import com.revolsys.geometry.test.testrunner.Result;
/**
* A {@link GeometryOperation} which executes the original operation
* and returns that result,
* but also executes a separate operation (which could be multiple operations).
* The side operations can throw exceptions if they do not compute
* correct results. This relies on the availability of
* another reliable implementation to provide the expected result.
* <p>
* This class can be used via the <tt>-geomop</tt> command-line option
* or by the <tt><geometryOperation></tt> XML test file setting.
*
* @author mbdavis
*
*/
public abstract class TeeGeometryOperation implements GeometryOperation {
private GeometryMethodOperation chainOp = new GeometryMethodOperation();
public TeeGeometryOperation() {
}
/**
* Creates a new operation which chains to the given {@link GeometryMethodOperation}
* for non-intercepted methods.
*
* @param chainOp the operation to chain to
*/
public TeeGeometryOperation(final GeometryMethodOperation chainOp) {
this.chainOp = chainOp;
}
@Override
public Class getReturnType(final String opName) {
return this.chainOp.getReturnType(opName);
}
/**
* Invokes the named operation
*
* @param opName
* @param geometry
* @param args
* @return the result
* @throws Exception
* @see GeometryOperation#invoke
*/
@Override
public Result invoke(final String opName, final Geometry geometry, final Object[] args)
throws Exception {
runTeeOp(opName, geometry, args);
return this.chainOp.invoke(opName, geometry, args);
}
protected abstract void runTeeOp(String opName, Geometry geometry, Object[] args);
}