org.camunda.bpm.engine.impl.dmn.el.ProcessEngineJuelElExpression Maven / Gradle / Ivy
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* 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.dmn.el;
import org.camunda.bpm.dmn.engine.impl.spi.el.ElExpression;
import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.el.JuelExpressionManager;
import org.camunda.bpm.impl.juel.jakarta.el.ELContext;
import org.camunda.bpm.impl.juel.jakarta.el.ValueExpression;
import org.camunda.bpm.engine.variable.context.VariableContext;
/**
* @author Daniel Meyer
*
*/
public class ProcessEngineJuelElExpression implements ElExpression {
protected final JuelExpressionManager expressionManager;
protected final ValueExpression valueExpression;
public ProcessEngineJuelElExpression(JuelExpressionManager expressionManager, ValueExpression expression) {
this.expressionManager = expressionManager;
this.valueExpression = expression;
}
public Object getValue(VariableContext variableContext) {
if(Context.getCommandContext() == null) {
throw new ProcessEngineException("Expression can only be evaluated inside the context of the process engine");
}
ELContext context = expressionManager.createElContext(variableContext);
return valueExpression.getValue(context);
}
}