org.camunda.bpm.engine.impl.scripting.engine.VariableScopeResolver 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.engine.impl.scripting.engine;
import static org.camunda.bpm.engine.impl.util.EnsureUtil.ensureNotNull;
import java.util.Set;
import org.camunda.bpm.engine.delegate.VariableScope;
import org.camunda.bpm.engine.impl.pvm.runtime.ExecutionImpl;
/**
* Bindings implementation using an {@link ExecutionImpl} as 'back-end'.
*
* @author Tom Baeyens
* @author Joram Barrez
*/
public class VariableScopeResolver implements Resolver {
protected VariableScope variableScope;
protected String variableScopeKey;
public VariableScopeResolver(VariableScope variableScope) {
ensureNotNull("variableScope", variableScope);
variableScopeKey = variableScope.getVariableScopeKey();
this.variableScope = variableScope;
}
public boolean containsKey(Object key) {
return variableScopeKey.equals(key) || variableScope.hasVariable((String) key);
}
public Object get(Object key) {
if (variableScopeKey.equals(key)) {
return variableScope;
}
return variableScope.getVariable((String) key);
}
public Set keySet() {
// get variable names will return a new set instance
Set variableNames = variableScope.getVariableNames();
variableNames.add(variableScopeKey);
return variableNames;
}
}