/* 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.
 */
package org.flowable.cdi.impl;

import org.flowable.common.engine.api.FlowableException;
import org.flowable.engine.ProcessEngine;
import org.flowable.engine.ProcessEngines;

/**
 * {@link ProcessEngineLookup} for looking up or building a local {@link ProcessEngine} using the provided processEngineName ( {@link ProcessEngines#NAME_DEFAULT} is used as default value). Can be
 * used for looking up existing {@link ProcessEngine}s in the same ClassLoader as this Class.
 * <p>
 * Use this Strategy if you want to build and manage a {@link ProcessEngine} local to your application.
 * <p>
 * Note: Requires an "flowable.cfg.xml" to be available on the classpath.
 * 
 * @author Daniel Meyer
 */
public class LocalProcessEngineLookup implements org.flowable.cdi.spi.ProcessEngineLookup {

    @Override
    public int getPrecedence() {
        return 10;
    }

    protected String processEngineName = ProcessEngines.NAME_DEFAULT;

    @Override
    public ProcessEngine getProcessEngine() {
        return ProcessEngines.getProcessEngine(getProcessEngineName());
    }

    public String getProcessEngineName() {
        return processEngineName;
    }

    public void setProcessEngineName(String processEngineName) {
        this.processEngineName = processEngineName;
    }

    @Override
    public void ungetProcessEngine() {
        try {
            ProcessEngines.getProcessEngine(getProcessEngineName()).close();
        } catch (Exception e) {
            throw new FlowableException("Unable to close the local ProcessEngine", e);
        }
    }
}
