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.cfg;
  
  import org.activiti.engine.delegate.DelegateHelper;
  
  public enum DelegateExpressionFieldInjectionMode {
      /**
       * This is the pre version 5.21 mode: field expressions are allowed and the
       * only way to inject values.
       *
       * Using the
       * {@link DelegateHelper#getField(org.activiti.engine.delegate.DelegateExecution, String)}
       * method is not possible when using this mode, unless the Expressions are still defined
       * as members of the delegate (otherwise an exception will be thrown). In that case, they
       * should not be used, but rather the DelegateHelper methods should be used.
       */
      COMPATIBILITY,
  
      /**
       * Allows injection when using delegateExpressions but will not throw an exception
       * when the fields are not defined on the delegate. This allows for mixed behaviours
       * where some delegates have injection (for example because they are not singletons)
       * and some don't.
       */
      MIXED,
  
      /**
       * (Advised mode, as it is the safest)
       *
       * Disables field injection when using delegateExpressions, no field injection will happen.
       */
      DISABLED,
  }
  