Coverage Report - org.apache.commons.betwixt.expression.MethodUpdater

Classes in this File	Line Coverage	Branch Coverage	Complexity
MethodUpdater	56%	100%	1.5714285714285714;1.571

1		/*
2		* Copyright 2001-2004 The Apache Software Foundation.
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		package org.apache.commons.betwixt.expression;
17
18
19		import java.lang.reflect.Method;
20
21		import org.apache.commons.logging.Log;
22		import org.apache.commons.logging.LogFactory;
23
24		/** <p><code>MethodUpdater</code> updates the current bean context
25		* by calling a WriteMethod with the String value from the XML attribute
26		* or element.</p>
27		*
28		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
29		* @version $Revision: 231498 $
30		*/
31	832	public class MethodUpdater extends TypedUpdater {
32
33		/** Logger */
34	832	private static Log log = LogFactory.getLog( MethodUpdater.class );
35
36		/**
37		* Programmatically set log
38		* @param aLog the implementation to which this class should log
39		*/
40		public static void setLog( Log aLog ) {
41	0	log = aLog;
42	0	}
43
44		/** The method to call on the bean */
45		private Method method;
46		/** Base constructor */
47	0	public MethodUpdater() {
48	0	}
49
50		/**
51		* Convenience constructor sets method property
52		* @param method the Method to be invoked on the context's bean in the update
53		*/
54	17472	public MethodUpdater(Method method) {
55	17472	setMethod( method );
56	17472	}
57
58		/**
59		* Gets the method which will be invoked by the update
60		*
61		* @return the Method to be invoked by the update
62		*/
63		public Method getMethod() {
64	0	return method;
65		}
66
67		/**
68		* Sets the constant value of this expression
69		* @param method the Method to be invoked by the update
70		*/
71		public void setMethod(Method method) {
72	17472	this.method = method;
73	17472	Class[] types = method.getParameterTypes();
74	17472	if ( types == null || types.length <= 0 ) {
75	0	throw new IllegalArgumentException( "The Method must have at least one parameter" );
76		}
77	17472	setValueType(types[0]);
78	17472	}
79
80		// Implementation methods
81		//-------------------------------------------------------------------------
82
83
84
85		/**
86		* Returns something useful for logging.
87		* @return something useful for logging
88		*/
89		public String toString() {
90	39	return "MethodUpdater [method=" + method + "]";
91		}
92
93		/**
94		* Updates the bean by method invocation.
95		* @since 0.7
96		*/
97		protected void executeUpdate(Context context, Object bean, Object newValue) throws Exception {
98	7423	if ( log.isDebugEnabled() ) {
99	0	log.debug(
100	0	"Calling setter method: " + method.getName() + " on bean: " + bean
101	0	+ " with new value: " + newValue
102		);
103		}
104	7423	Object[] arguments = { newValue };
105		try
106		{
107	7423	method.invoke( bean, arguments );
108		}
109	0	catch (IllegalAccessException e)
110		{
111	0	method.setAccessible(true);
112	0	method.invoke( bean, arguments );
113		}
114	7423	}
115		}