/* * This file is part of the GeoLatte project. * * GeoLatte 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 3 of the License, or * (at your option) any later version. * * GeoLatte 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 GeoLatte. If not, see <http://www.gnu.org/licenses/>. * * Copyright (C) 2010 - 2010 and Ownership of code is shared by: * Qmino bvba - Romeinsestraat 18 - 3001 Heverlee (http://www.qmino.com) * Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com) */ package org.geolatte.common.cql; import org.geolatte.common.transformer.Transformation; import org.geolatte.common.transformer.TransformationException; import java.text.ParseException; /** * <p> * A {@link org.geolatte.common.transformer.Transformation} that applies a cql filter to its input object and returns a Boolean indicating whether the input passed the filter. * </p> * <p> * <i>Creation-Date</i>: 01-Jul-2010<br> * <i>Creation-Time</i>: 11:08:26<br> * </p> * * @author Bert Vanhooff * @author <a href="http://www.qmino.com">Qmino bvba</a> * @since SDK1.5 */ public class CqlFilterTransformation<T> implements Transformation<T, Boolean> { private CqlFilter cqlFilter; /** * Initializes a <pre>CQLFilterTransformation</pre> using the given cql expression * @param cqlExpression The cql expression * @throws java.text.ParseException When the given cqlExpression could not be parsed. */ public CqlFilterTransformation(String cqlExpression) throws ParseException { cqlFilter = Cql.toFilter(cqlExpression); } /** * Checks whether the given input object passes the cql filter. * * @param input The object to evaluate * @return True if the given object passes the cql filter, false otherwise. */ public Boolean transform(T input) throws TransformationException { try { return cqlFilter.evaluate(input); } catch (ParseException e) { throw new TransformationException(e, input); } } }