/*
 * 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
 * 
 *   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.apache.uima.tools.cvd;

import java.util.ArrayList;
import java.util.List;

/**
 * TODO: add type comment for <code>FSTreeNode</code>.
 * 
 * 
 */
public abstract class FSTreeNode {

  /** The children. */
  protected List<FSTreeNode> children = null;

  /**
   * Instantiates a new FS tree node.
   */
  public FSTreeNode() {
    // TODO Auto-generated constructor stub
  }

  /**
   * Removes the all children.
   */
  void removeAllChildren() {
    this.children = new ArrayList<>();
  }

  /**
   * Sets the children.
   *
   * @param children
   *          the new children
   */
  void setChildren(List<FSTreeNode> children) {
    this.children = children;
  }

  /**
   * Gets the children.
   *
   * @return the children
   */
  List<FSTreeNode> getChildren() {
    return this.children;
  }

  /**
   * Gets the child count.
   *
   * @return the child count
   */
  int getChildCount() {
    initChildren();
    if (this.children == null) {
      return 0;
    }
    return this.children.size();
  }

  /**
   * Inits the children.
   */
  protected abstract void initChildren();

}
