hu.bme.mit.trainbenchmark.benchmark.eclipseocl.queries.EclipseOclQuery.java Source code

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/*******************************************************************************
 * Copyright (c) 2010-2015, Benedek Izso, Gabor Szarnyas, Istvan Rath and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Benedek Izso - initial API and implementation
 *   Gabor Szarnyas - initial API and implementation
 *******************************************************************************/
package hu.bme.mit.trainbenchmark.benchmark.eclipseocl.queries;

import java.io.File;
import java.io.IOException;
import java.util.Collection;

import org.apache.commons.io.FileUtils;
import org.eclipse.ocl.ParserException;
import org.eclipse.ocl.ecore.OCL;
import org.eclipse.ocl.ecore.OCL.Helper;
import org.eclipse.ocl.ecore.OCL.Query;
import org.eclipse.ocl.ecore.OCLExpression;

import hu.bme.mit.trainbenchmark.benchmark.emf.driver.EmfDriver;
import hu.bme.mit.trainbenchmark.benchmark.emf.matches.EmfMatch;
import hu.bme.mit.trainbenchmark.benchmark.operations.ModelQuery;
import hu.bme.mit.trainbenchmark.constants.RailwayQuery;
import hu.bme.mit.trainbenchmark.railway.RailwayContainer;
import hu.bme.mit.trainbenchmark.railway.RailwayPackage;

public abstract class EclipseOclQuery<TMatch extends EmfMatch> extends ModelQuery<TMatch, EmfDriver> {

    protected Collection<TMatch> matches;
    protected OCL ocl;
    protected Query queryEvaluator;
    protected RailwayContainer container;

    public EclipseOclQuery(final EmfDriver driver, final String workspaceDir, final RailwayQuery query)
            throws IOException, ParserException {
        super(query, driver);

        final String oclQueryDefinition = FileUtils.readFileToString(new File(
                workspaceDir + "/trainbenchmark-tool-eclipseocl/src/main/resources/queries/" + query + ".ocl"));

        ocl = OCL.newInstance();
        final Helper helper = ocl.createOCLHelper();
        helper.setContext(RailwayPackage.eINSTANCE.getRailwayContainer());
        final OCLExpression expression = helper.createQuery(oclQueryDefinition);
        queryEvaluator = ocl.createQuery(expression);
    }

}