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

Classes in this File	Line Coverage	Branch Coverage	Complexity
StringExpression	73%	100%	1.4;1.4

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		/** <p><code>StringExpression</code> returns the current context object as a string.</p>
19		*
20		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
21		* @version $Revision: 155402 $
22		*/
23	182	public class StringExpression implements Expression {
24
25		/** We only need only <code>StringExpression</code> */
26	182	private static final StringExpression singleton = new StringExpression();
27
28		/**
29		* Gets the singleton
30		* @return the singleton <code>StringExpression</code> instance
31		*/
32		public static StringExpression getInstance() {
33	429	return singleton;
34		}
35
36		/** Base constructor. Should this be private? */
37	182	public StringExpression() {
38	182	}
39
40		/** Return the context bean as a string
41		*
42		* @param context evaluate expression against this context
43		* @return the <code>toString()</code> representation of the context bean
44		*/
45		public Object evaluate(Context context) {
46	1339	Object value = context.getBean();
47	1339	if ( value != null ) {
48	1339	return value.toString();
49		}
50	0	return null;
51		}
52
53		/**
54		* Do nothing
55		* @see org.apache.commons.betwixt.expression.Expression
56		*/
57		public void update(Context context, String newValue) {
58		// do nothing
59	0	}
60
61		/**
62		* Returns something useful for logging.
63		* @return the (short) class name
64		*/
65		public String toString() {
66	0	return "StringExpression";
67		}
68
69		}