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1   /**
2    * Copyright (c) 2008-2011, http://www.snakeyaml.org
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.yaml.snakeyaml.nodes;
18  
19  import java.util.List;
20  
21  import org.yaml.snakeyaml.error.Mark;
22  
23  /**
24   * Represents a sequence.
25   * <p>
26   * A sequence is a ordered collection of nodes.
27   * </p>
28   */
29  public class SequenceNode extends CollectionNode {
30      final private List<Node> value;
31  
32      public SequenceNode(Tag tag, boolean resolved, List<Node> value, Mark startMark, Mark endMark,
33              Boolean flowStyle) {
34          super(tag, startMark, endMark, flowStyle);
35          if (value == null) {
36              throw new NullPointerException("value in a Node is required.");
37          }
38          this.value = value;
39          this.resolved = resolved;
40      }
41  
42      public SequenceNode(Tag tag, List<Node> value, Boolean flowStyle) {
43          this(tag, true, value, null, null, flowStyle);
44      }
45  
46      @Override
47      public NodeId getNodeId() {
48          return NodeId.sequence;
49      }
50  
51      /**
52       * Returns the elements in this sequence.
53       * 
54       * @return Nodes in the specified order.
55       */
56      public List<Node> getValue() {
57          return value;
58      }
59  
60      public void setListType(Class<? extends Object> listType) {
61          for (Node node : value) {
62              node.setType(listType);
63          }
64      }
65  
66      public String toString() {
67          return "<" + this.getClass().getName() + " (tag=" + getTag() + ", value=" + getValue()
68                  + ")>";
69      }
70  }