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/*
 * #%L
 * Talend ESB :: Camel Talend Job Component
 * %%
 * Copyright (C) 2011 - 2014 Talend Inc.
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

package org.talend.camel;

import java.util.Collection;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;

import routines.system.api.TalendESBJobFactory;

public class Activator implements BundleActivator {

    private static BundleContext context;

    @Override
    public void start(BundleContext ctx) throws Exception {
        Activator.context = ctx;
    }

    @Override
    public void stop(BundleContext ctx) throws Exception {
        Activator.context = null;
    }

    public static TalendESBJobFactory getJobService(String fullJobName) throws InvalidSyntaxException {
        if (context != null) {
            final String simpleName = fullJobName.substring(fullJobName.lastIndexOf('.') + 1);
            /*
             * read old version style first
             * see https://jira.talendforge.org/browse/TESB-12909
             */
            Collection> serviceReferences =
                    context.getServiceReferences(TalendESBJobFactory.class, "(&(name=" + simpleName + ")(type=job))");

            //if no old version style, then read fashion style
            if (null == serviceReferences || serviceReferences.isEmpty()) {
                serviceReferences =
                    context.getServiceReferences(TalendESBJobFactory.class, "(&(name=" + fullJobName + ")(type=job))");
            }

            if (null != serviceReferences && !serviceReferences.isEmpty()) {
                return context.getService(serviceReferences.iterator().next());
            }
        }
        return null;
    }

}