/**
 * <copyright>
 * 
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * 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:
 * Thales Corporate Services S.A.S - initial API and implementation
 * 
 * </copyright>
 */

package org.eclipse.egf.pattern.execution;

import org.eclipse.egf.model.pattern.BundleAccessor;
import org.eclipse.egf.pattern.EGFPatternPlugin;
import org.eclipse.egf.pattern.query.IQuery;
import org.eclipse.egf.pattern.query.QueryKind;
import org.osgi.framework.Bundle;

/**
 * @author Thomas Guiu
 * 
 */
public class QueryHelper {

    public static IQuery load(BundleAccessor accessor, String queryId) {
        try {
            QueryKind queryKind = IQuery.INSTANCE.getQueryKind(queryId);
            Bundle bundle = accessor.getBundle(queryKind.getPlatformBundle().getBundleId());
            Class<?> loadClass = bundle.loadClass(IQuery.INSTANCE.getQueryClassName(queryId));
            return (IQuery) loadClass.newInstance();
        } catch (Exception e) {
            EGFPatternPlugin.getDefault().logError(e);
            throw new QueryException(e);
        }
    }

    static class QueryException extends RuntimeException {

        private static final long serialVersionUID = 1L;

        public QueryException(Exception e) {
            super(e);
        }

    }

}