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1   package org.apache.commons.digester3.annotations.handlers;
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.lang.reflect.Method;
23  
24  import org.apache.commons.digester3.annotations.AnnotationHandler;
25  import org.apache.commons.digester3.annotations.rules.SetTop;
26  import org.apache.commons.digester3.binder.RulesBinder;
27  
28  /**
29   * {@link SetTop} handler.
30   *
31   * @since 3.0
32   */
33  public final class SetTopHandler
34      implements AnnotationHandler<SetTop, Method>
35  {
36  
37      /**
38       * {@inheritDoc}
39       */
40      public void handle( SetTop annotation, Method element, RulesBinder rulesBinder )
41      {
42          if ( element.getParameterTypes().length != 1 )
43          {
44              rulesBinder.addError( "Methods annotated with digester annotation rule @%s must have just one argument",
45                                    SetTop.class.getName() );
46              return;
47          }
48  
49          rulesBinder
50              .forPattern( annotation.pattern() )
51              .withNamespaceURI( annotation.namespaceURI().length() > 0 ? annotation.namespaceURI() : null )
52              .setTop( element.getName() )
53              .withParameterType( element.getParameterTypes()[0] )
54              .fireOnBegin( annotation.fireOnBegin() );
55      }
56  
57  }