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   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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
   *
   *    https://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
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   ****************************************************************/
  
  package org.apache.cayenne.template.parser;
  
  /**
   * @since 4.1
   */
  public abstract class SimpleNode implements Node {
  
      protected Node parent;
      protected Node[] children;
      protected int id;
  
      public SimpleNode(int i) {
          id = i;
      }
  
      @Override
      public void jjtSetParent(Node n) {
          parent = n;
      }
  
      @Override
      public Node jjtGetParent() {
          return parent;
      }
  
      @Override
      public void jjtAddChild(Node n, int i) {
          if (children == null) {
              children = new Node[i + 1];
          } else if (i >= children.length) {
              Node c[] = new Node[i + 1];
              System.arraycopy(children, 0, c, 0, children.length);
              children = c;
          }
          children[i] = n;
      }
  
      @Override
      public Node jjtGetChild(int i) {
          return children[i];
      }
  
      @Override
      public int jjtGetNumChildren() {
          return (children == null) ? 0 : children.length;
      }
  
      @Override
      public String toString() {
          return SQLTemplateParserTreeConstants.jjtNodeName[id];
      }
  
      public String toString(String prefix) {
          return prefix + toString();
      }
  
      /**
       * Override this method if you want to customize how the node dumps out its children.
       */
      public void dump(String prefix) {
          System.out.println(toString(prefix));
          if (children != null) {
              for (Node aChildren : children) {
                  SimpleNode n = (SimpleNode) aChildren;
                  if (n != null) {
                      n.dump(prefix + " ");
                  }
              }
          }
      }
  }
  