/*
* The JCS Conflation Suite (JCS) is a library of Java classes that
* can be used to build automated or semi-automated conflation solutions.
*
* Copyright (C) 2003 Vivid Solutions
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; 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.vividsolutions.jcs.conflate.polygonmatch;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jump.feature.Feature;
import com.vividsolutions.jump.feature.FeatureCollection;
import java.util.Iterator;
/**
* Base class of FeatureMatchers that compare the target to each candidate
* in turn -- the comparisons only use one candidate at a time.
*/
public abstract class IndependentCandidateMatcher implements FeatureMatcher {
public IndependentCandidateMatcher() {
}
@Override
public Matches match(Feature target, FeatureCollection candidates) {
Matches matches = new Matches(candidates.getFeatureSchema());
for (Iterator i = candidates.iterator(); i.hasNext(); ) {
Feature candidate = (Feature) i.next();
double score = match(target.getGeometry(), candidate.getGeometry());
if (score > 0) { matches.add(candidate, score); }
}
return matches;
}
/**
* Compares the target to the candidate feature. Called for each candidate
* feature by #match(Feature, FeatureCollection).
* @param target the feature to match
* @param candidate the feature to compare with the target
* @return a score from 0 to 1 indicating how well the candidate matches the
* target
*/
public abstract double match(Geometry target, Geometry candidate);
}