org.camunda.bpm.engine.cdi.CdiExpressionManager Maven / Gradle / Ivy

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/* 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.camunda.bpm.engine.cdi;

import org.camunda.bpm.engine.cdi.impl.el.CdiResolver;
import org.camunda.bpm.engine.impl.el.ExpressionManager;
import org.camunda.bpm.engine.impl.el.VariableContextElResolver;
import org.camunda.bpm.engine.impl.el.VariableScopeElResolver;
import org.camunda.bpm.engine.impl.javax.el.ArrayELResolver;
import org.camunda.bpm.engine.impl.javax.el.BeanELResolver;
import org.camunda.bpm.engine.impl.javax.el.CompositeELResolver;
import org.camunda.bpm.engine.impl.javax.el.ELResolver;
import org.camunda.bpm.engine.impl.javax.el.ListELResolver;
import org.camunda.bpm.engine.impl.javax.el.MapELResolver;

/**
 * {@link ExpressionManager} for resolving Cdi-managed beans.
 *
 * This {@link ExpressionManager} implementation performs lazy lookup of the
 * Cdi-BeanManager and can thus be configured using the spring-based
 * configuration of the process engine:
 *
 *  * <property name="expressionManager">
 *      <bean class="org.camunda.bpm.engine.test.cdi.CdiExpressionManager" />
 * </property>
 * 
 *
 * @author Daniel Meyer
 */
public class CdiExpressionManager extends ExpressionManager {

  @Override
  protected ELResolver createElResolver() {
    CompositeELResolver compositeElResolver = new CompositeELResolver();
    compositeElResolver.add(new VariableScopeElResolver());
    compositeElResolver.add(new VariableContextElResolver());

    compositeElResolver.add(new CdiResolver());

    compositeElResolver.add(new ArrayELResolver());
    compositeElResolver.add(new ListELResolver());
    compositeElResolver.add(new MapELResolver());
    compositeElResolver.add(new BeanELResolver());

    return compositeElResolver;
  }

}