/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.equation.ext;

import org.simantics.db.Resource;
import org.simantics.db.ReadGraph;
import org.simantics.db.exception.DatabaseException;
import org.simantics.equation.EquationResources;
import org.simantics.equation.solver.ExpressionSolver;
import org.simantics.equation.solver.Solver;

public class DoubleAssignSolver implements ExpressionSolver {

    public void evaluate(Solver solver, ReadGraph g, Resource t) throws DatabaseException {
        Resource source = g.getSingleObject(t, EquationResources.equationResource.HasSource);
        Resource target = g.getSingleObject(t, EquationResources.equationResource.HasTarget);

        double[] xs = (double[]) solver.getValue(g, source);
        double x = xs[0];

        solver.setValue(target, new double[] { x });
    }

}