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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.issues.issue9;
17  
18  import org.yaml.snakeyaml.constructor.Constructor;
19  import org.yaml.snakeyaml.nodes.Node;
20  import org.yaml.snakeyaml.nodes.NodeId;
21  import org.yaml.snakeyaml.nodes.ScalarNode;
22  import org.yaml.snakeyaml.nodes.Tag;
23  
24  public class BeanConstructor extends Constructor {
25  
26      public BeanConstructor() {
27          super(BeanHolder.class);
28          yamlConstructors.put(new Tag(Bean1.class), new Bean1ScalarConstructor());
29          yamlConstructors.put(new Tag(BeanHolder.class), new BeanHolderScalarConstructor());
30      }
31  
32      private class Bean1ScalarConstructor extends ConstructScalar {
33          @Override
34          public Object construct(Node node) {
35              ScalarNode snode = (ScalarNode) node;
36              if (snode.getValue().length() == 0) {
37                  return new Bean1();
38              } else {
39                  return new Bean1(new Integer(snode.getValue()));
40              }
41          }
42      }
43  
44      private class BeanHolderScalarConstructor extends ConstructScalar {
45          @Override
46          public Object construct(Node node) {
47              if (node.getNodeId() == NodeId.scalar) {
48                  ScalarNode n = (ScalarNode) node;
49                  String value = n.getValue();
50                  int i = 3;
51                  if (value.length() != 0) {
52                      i = Integer.parseInt(value);
53                  }
54                  return new BeanHolder(new Bean1(i));
55              } else {
56                  return new BeanHolder();
57              }
58          }
59      }
60  }