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1   package org.apache.commons.digester3.xmlrules;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import static java.lang.String.format;
23  
24  import org.apache.commons.digester3.binder.LinkedRuleBuilder;
25  import org.apache.commons.digester3.binder.NodeCreateRuleProvider;
26  import org.apache.commons.digester3.binder.NodeCreateRuleProvider.NodeType;
27  import org.apache.commons.digester3.binder.RulesBinder;
28  import org.xml.sax.Attributes;
29  
30  /**
31   * 
32   */
33  final class NodeCreateRule
34      extends AbstractXmlRule
35  {
36  
37      public NodeCreateRule( RulesBinder targetRulesBinder, PatternStack patternStack )
38      {
39          super( targetRulesBinder, patternStack );
40      }
41  
42      /**
43       * {@inheritDoc}
44       */
45      @Override
46      protected void bindRule( LinkedRuleBuilder linkedRuleBuilder, Attributes attributes )
47          throws Exception
48      {
49          NodeCreateRuleProvider nodeProvider = linkedRuleBuilder.createNode();
50  
51          String nodeType = attributes.getValue( "type" );
52          if ( nodeType != null && nodeType.length() > 0 )
53          {
54              if ( "element".equals( nodeType ) )
55              {
56                  nodeProvider.ofType( NodeType.ELEMENT );
57              }
58              else if ( "fragment".equals( nodeType ) )
59              {
60                  nodeProvider.ofType( NodeType.DOCUMENT_FRAGMENT );
61              }
62              else
63              {
64                  throw new RuntimeException( format(
65                      "Unrecognized node type: %s. This attribute is optional or can have a value of element|fragment.",
66                      nodeType ) );
67              }
68          }
69      }
70  
71  }