org.camunda.bpm.application.impl.ProcessApplicationScriptEnvironment Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.application.impl;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import org.camunda.bpm.application.ProcessApplicationInterface;
import org.camunda.bpm.engine.impl.scripting.ExecutableScript;
import org.camunda.bpm.engine.impl.scripting.engine.ScriptEngineResolver;
/**
* @author Roman Smirnov
*
*/
public class ProcessApplicationScriptEnvironment {
protected ProcessApplicationInterface processApplication;
protected ScriptEngineResolver processApplicationScriptEngineResolver;
protected Map> environmentScripts = new HashMap>();
public ProcessApplicationScriptEnvironment(ProcessApplicationInterface processApplication) {
this.processApplication = processApplication;
}
/**
* Returns an instance of {@link ScriptEngine} for the given scriptEngineName.
*
* Iff the given parameter cache is set true,
* then the instance {@link ScriptEngine} will be cached.
*
* @param scriptEngineName the name of the {@link ScriptEngine} to return
* @param cache a boolean value which indicates whether the {@link ScriptEngine} should
* be cached or not.
*
* @return a {@link ScriptEngine}
*/
public ScriptEngine getScriptEngineForName(String scriptEngineName, boolean cache) {
if(processApplicationScriptEngineResolver == null) {
synchronized (this) {
if(processApplicationScriptEngineResolver == null) {
processApplicationScriptEngineResolver = new ScriptEngineResolver(new ScriptEngineManager(getProcessApplicationClassloader()));
}
}
}
return processApplicationScriptEngineResolver.getScriptEngine(scriptEngineName, cache);
}
/**
* Returns a map of cached environment scripts per script language.
*/
public Map> getEnvironmentScripts() {
return environmentScripts;
}
protected ClassLoader getProcessApplicationClassloader() {
return processApplication.getProcessApplicationClassloader();
}
}