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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 java.util.StringTokenizer;
23  
24  import org.apache.commons.digester3.binder.LinkedRuleBuilder;
25  import org.apache.commons.digester3.binder.ObjectCreateBuilder;
26  import org.apache.commons.digester3.binder.RulesBinder;
27  import org.xml.sax.Attributes;
28  
29  /**
30   *
31   */
32  final class ObjectCreateRule
33      extends AbstractXmlRule
34  {
35  
36      public ObjectCreateRule( RulesBinder targetRulesBinder, PatternStack patternStack )
37      {
38          super( targetRulesBinder, patternStack );
39      }
40  
41      /**
42       * {@inheritDoc}
43       */
44      @Override
45      protected void bindRule( LinkedRuleBuilder linkedRuleBuilder, Attributes attributes )
46          throws Exception
47      {
48          ObjectCreateBuilder builder = linkedRuleBuilder.createObject()
49              .ofType( attributes.getValue( "classname" ) )
50              .ofTypeSpecifiedByAttribute( attributes.getValue( "attrname" ) );
51  
52          String paramTypesStr = attributes.getValue( "paramtypes" );
53          if ( paramTypesStr != null && paramTypesStr.length() > 0 )
54          {
55              StringTokenizer tokens = new StringTokenizer( paramTypesStr, " \t\n\r," );
56              String[] paramTypeNames = new String[tokens.countTokens()];
57              int counter = 0;
58              while ( tokens.hasMoreTokens() )
59              {
60                  paramTypeNames[counter++] = tokens.nextToken();
61              }
62              builder.usingConstructor( paramTypeNames );
63          }
64          String paramsStr = attributes.getValue( "params" );
65          if ( paramsStr != null && paramsStr.length() > 0 )
66          {
67              StringTokenizer tokens = new StringTokenizer( paramTypesStr, " \t\n\r," );
68              Object[] params = new Object[tokens.countTokens()];
69              int counter = 0;
70              while ( tokens.hasMoreTokens() )
71              {
72                  params[counter++] = tokens.nextToken();
73              }
74              builder.usingDefaultConstructorArguments( params );
75          }
76      }
77  
78  }