1 /*
2 * (c) Copyright 2006-2020 by rapiddweller GmbH & Volker Bergmann. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, is permitted under the terms of the
6 * GNU General Public License.
7 *
8 * For redistributing this software or a derivative work under a license other
9 * 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 rapiddweller GmbH & 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 com.rapiddweller.benerator.sample;
28
29 import com.rapiddweller.benerator.util.ThreadSafeGenerator;
30 import com.rapiddweller.benerator.wrapper.ProductWrapper;
31
32 /**
33 * Generator implementation that always returns the same value.<br/>
34 * <br/>
35 * Created: 08.06.2006 20:26:22
36 *
37 * @param <E> the type parameter
38 * @author Volker Bergmann
39 * @since 0.1
40 */
41 public class ConstantGenerator<E> extends ThreadSafeGenerator<E> {
42
43 /**
44 * The value to return
45 */
46 private E value;
47
48 private final Class<E> generatedType;
49
50 // constructors ----------------------------------------------------------------------------------------------------
51
52 /**
53 * Instantiates a new Constant generator.
54 */
55 public ConstantGenerator() {
56 this(null);
57 }
58
59 /**
60 * Initializes the generator to generate the specified value
61 *
62 * @param value the value
63 */
64 @SuppressWarnings("unchecked")
65 public ConstantGenerator(E value) {
66 this(value, (Class<E>) (value != null ? value.getClass() : Object.class));
67 }
68
69 /**
70 * Instantiates a new Constant generator.
71 *
72 * @param value the value
73 * @param generatedType the generated type
74 */
75 public ConstantGenerator(E value, Class<E> generatedType) {
76 this.value = value;
77 this.generatedType = generatedType;
78 }
79
80 // config properties -----------------------------------------------------------------------------------------------
81
82 /**
83 * Returns the property 'value'
84 *
85 * @return the value
86 */
87 public E getValue() {
88 return value;
89 }
90
91 /**
92 * Sets the property 'value'
93 *
94 * @param value the value
95 */
96 public void setValue(E value) {
97 this.value = value;
98 }
99
100 // Generator implementation ----------------------------------------------------------------------------------------
101
102 @Override
103 @SuppressWarnings("unchecked")
104 public Class<E> getGeneratedType() {
105 return (generatedType != null ?
106 generatedType :
107 (value != null ? (Class<E>) value.getClass() : (Class<E>) Object.class)
108 );
109 }
110
111 /**
112 * Returns the value of property 'value'
113 */
114 @Override
115 public ProductWrapper<E> generate(ProductWrapper<E> wrapper) {
116 return wrapper.wrap(value);
117 }
118
119 // java.lang.Object overrides --------------------------------------------------------------------------------------
120
121 @Override
122 public String toString() {
123 return getClass().getSimpleName() + '[' + value + ']';
124 }
125
126 }