content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.activiti.engine.impl.bpmn.listener;
  
  import org.activiti.engine.delegate.DelegateExecution;
  import org.activiti.engine.delegate.ExecutionListener;
  import org.activiti.engine.delegate.Expression;
  import org.activiti.engine.impl.context.Context;
  import org.activiti.engine.impl.scripting.ScriptingEngines;
  
  public class ScriptExecutionListener implements ExecutionListener {
  
      private static final long serialVersionUID = 1L;
  
      protected Expression script;
  
      protected Expression language;
  
      protected Expression resultVariable;
  
      @Override
      public void notify(DelegateExecution execution) {
          validateParameters();
  
          ScriptingEngines scriptingEngines = Context.getProcessEngineConfiguration().getScriptingEngines();
          Object result = scriptingEngines.evaluate(script.getExpressionText(), language.getExpressionText(), execution);
  
          if (resultVariable != null) {
              execution.setVariable(resultVariable.getExpressionText(), result);
          }
      }
  
      protected void validateParameters() {
          if (script == null) {
              throw new IllegalArgumentException("The field 'script' should be set on the ExecutionListener");
          }
  
          if (language == null) {
              throw new IllegalArgumentException("The field 'language' should be set on the ExecutionListener");
          }
      }
  
      public void setScript(Expression script) {
          this.script = script;
      }
  
      public void setLanguage(Expression language) {
          this.language = language;
      }
  
      public void setResultVariable(Expression resultVariable) {
          this.resultVariable = resultVariable;
      }
  }
  