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1   /**
2    * Copyright (c) 2008-2012, 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  package org.yaml.snakeyaml.nodes;
17  
18  import java.util.List;
19  
20  import org.yaml.snakeyaml.error.Mark;
21  
22  /**
23   * Represents a sequence.
24   * <p>
25   * A sequence is a ordered collection of nodes.
26   * </p>
27   */
28  public class SequenceNode extends CollectionNode {
29      final private List<Node> value;
30  
31      public SequenceNode(Tag tag, boolean resolved, List<Node> value, Mark startMark, Mark endMark,
32              Boolean flowStyle) {
33          super(tag, startMark, endMark, flowStyle);
34          if (value == null) {
35              throw new NullPointerException("value in a Node is required.");
36          }
37          this.value = value;
38          this.resolved = resolved;
39      }
40  
41      public SequenceNode(Tag tag, List<Node> value, Boolean flowStyle) {
42          this(tag, true, value, null, null, flowStyle);
43      }
44  
45      @Override
46      public NodeId getNodeId() {
47          return NodeId.sequence;
48      }
49  
50      /**
51       * Returns the elements in this sequence.
52       * 
53       * @return Nodes in the specified order.
54       */
55      public List<Node> getValue() {
56          return value;
57      }
58  
59      public void setListType(Class<? extends Object> listType) {
60          for (Node node : value) {
61              node.setType(listType);
62          }
63      }
64  
65      public String toString() {
66          return "<" + this.getClass().getName() + " (tag=" + getTag() + ", value=" + getValue()
67                  + ")>";
68      }
69  }