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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.issues.issue9;
18  
19  import org.yaml.snakeyaml.constructor.Constructor;
20  import org.yaml.snakeyaml.nodes.Node;
21  import org.yaml.snakeyaml.nodes.NodeId;
22  import org.yaml.snakeyaml.nodes.ScalarNode;
23  import org.yaml.snakeyaml.nodes.Tag;
24  
25  public class BeanConstructor extends Constructor {
26  
27      public BeanConstructor() {
28          super(BeanHolder.class);
29          yamlConstructors.put(new Tag(Bean1.class), new Bean1ScalarConstructor());
30          yamlConstructors.put(new Tag(BeanHolder.class), new BeanHolderScalarConstructor());
31      }
32  
33      private class Bean1ScalarConstructor extends ConstructScalar {
34          @Override
35          public Object construct(Node node) {
36              ScalarNode snode = (ScalarNode) node;
37              if (snode.getValue().length() == 0) {
38                  return new Bean1();
39              } else {
40                  return new Bean1(new Integer(snode.getValue()));
41              }
42          }
43      }
44  
45      private class BeanHolderScalarConstructor extends ConstructScalar {
46          @Override
47          public Object construct(Node node) {
48              if (node.getNodeId() == NodeId.scalar) {
49                  ScalarNode n = (ScalarNode) node;
50                  String value = n.getValue();
51                  int i = 3;
52                  if (value.length() != 0) {
53                      i = Integer.parseInt(value);
54                  }
55                  return new BeanHolder(new Bean1(i));
56              } else {
57                  return new BeanHolder();
58              }
59          }
60      }
61  }