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

Classes in this File	Line Coverage	Branch Coverage	Complexity
ConstantExpression	36%	N/A	1.0;1

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>ConstantExpression</code> represents a constant expression.</p>
19		*
20		* <p> In other words, {@link #evaluate} returns a value independent of the context. </p>
21		*
22		* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
23		* @version $Revision: 155402 $
24		*/
25		public class ConstantExpression implements Expression {
26
27		/** The value of this expression */
28		private Object value;
29
30		/** Base constructor
31		*/
32	0	public ConstantExpression() {
33	0	}
34
35		/**
36		* Convenience constructor sets <code>value</code> property.
37		* @param value the Object which is the constant value for this expression
38		*/
39	169	public ConstantExpression(Object value) {
40	169	this.value = value;
41	169	}
42
43		/**
44		* Evaluate expression against given context.
45		*
46		* @param context evaluate expression against this context
47		* @return current value of <code>value</code> property
48		*/
49		public Object evaluate(Context context) {
50	91	return value;
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		* Gets the constant value of this expression
63		* @return this expression's constant value
64		*/
65		public Object getValue() {
66	0	return value;
67		}
68
69		/**
70		* Sets the constant value of this expression
71		* @param value the constant value for this expression
72		*/
73		public void setValue(Object value) {
74	0	this.value = value;
75	0	}
76
77		/**
78		* Returns something useful for logging
79		* @return something useful for logging
80		*/
81		public String toString() {
82	0	return "ConstantExpression [value=" + value + "]";
83		}
84		}