01: /*
02: * (c) Copyright 2006 by Volker Bergmann. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, is permitted under the terms of the
06: * GNU General Public License.
07: *
08: * For redistributing this software or a derivative work under a license other
09: * than the GPL-compatible Free Software License as defined by the Free
10: * Software Foundation or approved by OSI, you must first obtain a commercial
11: * license to this software product from Volker Bergmann.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
14: * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
15: * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
16: * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
17: * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24: * POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: package org.databene.benerator.sample;
28:
29: import org.databene.benerator.LightweightGenerator;
30: import org.databene.benerator.InvalidGeneratorSetupException;
31:
32: /**
33: * Generator implementation that always returns the same value.<br/>
34: * <br/>
35: * Created: 08.06.2006 20:26:22
36: */
37: public class ConstantGenerator<E> extends LightweightGenerator<E> {
38:
39: /** The value to return */
40: private E value;
41:
42: // constructors ----------------------------------------------------------------------------------------------------
43:
44: public ConstantGenerator() {
45: this (null);
46: }
47:
48: /** Initializes the generator to generate the specified value */
49: public ConstantGenerator(E value) {
50: this .value = value;
51: }
52:
53: // config properties -----------------------------------------------------------------------------------------------
54:
55: /** convenience setter for generic setup */
56: public void setValues(E[] value) {
57: if (value.length != 0)
58: throw new InvalidGeneratorSetupException(
59: "The number of values must be 1 for the "
60: + getClass().getSimpleName());
61: this .value = value[0];
62: }
63:
64: /** Returns the property 'value' */
65: public E getValue() {
66: return value;
67: }
68:
69: /** Sets the property 'value' */
70: public void setValue(E value) {
71: this .value = value;
72: }
73:
74: // Generator implementation ----------------------------------------------------------------------------------------
75:
76: public Class<E> getGeneratedType() {
77: return (Class<E>) value.getClass();
78: }
79:
80: /** Returns the value of property 'value' */
81: public E generate() {
82: return value;
83: }
84:
85: // java.lang.Object overrides --------------------------------------------------------------------------------------
86:
87: public String toString() {
88: return getClass().getSimpleName() + '[' + value + ']';
89: }
90:
91: }
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