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.repository;
  
  import java.io.Serializable;
  
  /**
   * Represents a diagram node.
   *
  
   */
  public abstract class DiagramElement implements Serializable {
  
      private static final long serialVersionUID = 1L;
  
      protected String id;
  
      public DiagramElement() {}
  
      public DiagramElement(String id) {
          this.id = id;
      }
  
      /**
       * Id of the diagram element.
       */
      public String getId() {
          return id;
      }
  
      public void setId(String id) {
          this.id = id;
      }
  
      @Override
      public String toString() {
          return "id=" + getId();
      }
  
      public abstract boolean isNode();
  
      public abstract boolean isEdge();
  }
  