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.helper;
  
  import java.util.List;
  import org.activiti.engine.delegate.Expression;
  import org.activiti.engine.delegate.VariableScope;
  import org.activiti.engine.impl.bpmn.parser.FieldDeclaration;
  import org.activiti.engine.impl.cfg.DelegateExpressionFieldInjectionMode;
  import org.activiti.engine.impl.context.Context;
  
  /**
  
   */
  public class DelegateExpressionUtil {
  
      public static Object resolveDelegateExpression(Expression expression, VariableScope variableScope) {
          return resolveDelegateExpression(expression, variableScope, null);
      }
  
      public static Object resolveDelegateExpression(
          Expression expression,
          VariableScope variableScope,
          List<FieldDeclaration> fieldDeclarations
      ) {
          // Note: we can't cache the result of the expression, because the
          // execution can change: eg. delegateExpression='${mySpringBeanFactory.randomSpringBean()}'
          Object delegate = expression.getValue(variableScope);
  
          if (fieldDeclarations != null && fieldDeclarations.size() > 0) {
              DelegateExpressionFieldInjectionMode injectionMode =
                  Context.getProcessEngineConfiguration().getDelegateExpressionFieldInjectionMode();
              if (injectionMode.equals(DelegateExpressionFieldInjectionMode.COMPATIBILITY)) {
                  ClassDelegate.applyFieldDeclaration(fieldDeclarations, delegate, true);
              } else if (injectionMode.equals(DelegateExpressionFieldInjectionMode.MIXED)) {
                  ClassDelegate.applyFieldDeclaration(fieldDeclarations, delegate, false);
              }
          }
  
          return delegate;
      }
  }
  