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.primitive.number;
28
29 import com.rapiddweller.common.ConversionException;
30 import com.rapiddweller.common.converter.NumberToNumberConverter;
31 import com.rapiddweller.common.converter.ThreadSafeConverter;
32
33 /**
34 * Quantizes integer numbers ({@link Byte}, {@link Short}, {@link Integer}, {@link Long})
35 * to be <code>min</code> plus an integral multiple of <code>granularity</code>.<br/><br/>
36 * Created: 15.03.2010 15:27:08
37 *
38 * @param <E> the type parameter
39 * @author Volker Bergmann
40 * @since 0.6.0
41 */
42 public class IntegralQuantizer<E extends Number> extends ThreadSafeConverter<E, E> {
43
44 private final long min;
45 private final long granularity;
46 private final NumberToNumberConverter<Long, E> converter;
47
48 /**
49 * Instantiates a new Integral quantizer.
50 *
51 * @param numberType the number type
52 * @param min the min
53 * @param granularity the granularity
54 */
55 public IntegralQuantizer(Class<E> numberType, Long min, long granularity) {
56 super(numberType, numberType);
57 this.min = (min != null ? min : 0L);
58 this.granularity = granularity;
59 this.converter = new NumberToNumberConverter<>(Long.class, numberType);
60 }
61
62 @Override
63 public E convert(E sourceValue) throws ConversionException {
64 long l = (sourceValue.longValue() - min) / granularity * granularity + min;
65 return converter.convert(l);
66 }
67
68 }