BeanPropertySqlParameterSource


1   /*
2    * Copyright 2002-2006 the original author or authors.
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.springframework.jdbc.core.namedparam;
18  
19  import org.springframework.beans.BeanWrapper;
20  import org.springframework.beans.BeanWrapperImpl;
21  import org.springframework.beans.NotReadablePropertyException;
22  
23  /**
24   * SqlParameterSource implementation that obtains parameter values
25   * from bean properties of a given JavaBean object. The names of
26   * the bean properties have to match the parameter names.
27   *
28   * <p>Uses a Spring BeanWrapper for bean property access underneath.
29   *
30   * @author Thomas Risberg
31   * @author Juergen Hoeller
32   * @since 2.0
33   * @see NamedParameterJdbcTemplate
34   * @see org.springframework.beans.BeanWrapper
35   */
36  public class BeanPropertySqlParameterSource extends AbstractSqlParameterSource {
37  
38      private final BeanWrapper beanWrapper;
39  
40  
41      /**
42       * Create a new BeanPropertySqlParameterSource for the given bean.
43       * @param object the bean instance to wrap
44       */
45      public BeanPropertySqlParameterSource(Object   object) {
46          this.beanWrapper = new BeanWrapperImpl(object);
47      }
48  
49  
50      public boolean hasValue(String   paramName) {
51          return this.beanWrapper.isReadableProperty(paramName);
52      }
53  
54      public Object   getValue(String   paramName) throws IllegalArgumentException   {
55          try {
56              return this.beanWrapper.getPropertyValue(paramName);
57          }
58          catch (NotReadablePropertyException ex) {
59              throw new IllegalArgumentException  (ex.getMessage());
60          }
61      }
62  
63  }
64
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