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.wrapper;
28
29 import com.rapiddweller.benerator.Generator;
30 import com.rapiddweller.common.MathUtil;
31
32 import java.math.BigDecimal;
33 import java.math.MathContext;
34
35 /**
36 * Converts the {@link Number} products of another {@link Generator} to {@link BigDecimal}.<br/>
37 * <br/>
38 * Created at 23.06.2009 22:58:26
39 *
40 * @param <E> the type parameter
41 * @author Volker Bergmann
42 * @since 0.6.0
43 */
44 public class AsBigDecimalGeneratorWrapper<E extends Number> extends GeneratorWrapper<E, BigDecimal> {
45
46 private int fractionDigits;
47
48 /**
49 * Instantiates a new As big decimal generator wrapper.
50 *
51 * @param source the source
52 */
53 public AsBigDecimalGeneratorWrapper(Generator<E> source) {
54 this(source, null, null);
55 }
56
57 /**
58 * Instantiates a new As big decimal generator wrapper.
59 *
60 * @param source the source
61 * @param min the min
62 * @param granularity the granularity
63 */
64 public AsBigDecimalGeneratorWrapper(Generator<E> source, BigDecimal min, BigDecimal granularity) {
65 super(source);
66 if (granularity != null) {
67 this.fractionDigits = MathUtil.fractionDigits(granularity.doubleValue());
68 if (min != null) {
69 this.fractionDigits = Math.max(this.fractionDigits, MathUtil.fractionDigits(min.doubleValue()));
70 }
71 } else if (min != null) {
72 this.fractionDigits = MathUtil.fractionDigits(min.doubleValue());
73 } else {
74 this.fractionDigits = 0;
75 }
76 }
77
78 @Override
79 public Class<BigDecimal> getGeneratedType() {
80 return BigDecimal.class;
81 }
82
83 @Override
84 public ProductWrapper<BigDecimal> generate(ProductWrapper<BigDecimal> wrapper) {
85 ProductWrapper<E> tmp = generateFromSource();
86 if (tmp == null) {
87 return null;
88 }
89 E feed = tmp.unwrap();
90 double d = feed.doubleValue();
91 int prefixDigits = (Math.floor(d) == 0. ? 0 : MathUtil.prefixDigitCount(d));
92 MathContext mathcontext = new MathContext(prefixDigits + fractionDigits);
93 return wrapper.wrap(new BigDecimal(d, mathcontext));
94 }
95
96 }