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;
28
29 import com.rapiddweller.benerator.Consumer;
30 import com.rapiddweller.benerator.consumer.AbstractConsumer;
31 import com.rapiddweller.common.Accessor;
32 import com.rapiddweller.common.Converter;
33 import com.rapiddweller.common.StringUtil;
34 import com.rapiddweller.common.accessor.FeatureAccessor;
35 import com.rapiddweller.common.converter.NumberToNumberConverter;
36 import com.rapiddweller.script.PrimitiveType;
37 import com.rapiddweller.script.math.ArithmeticEngine;
38
39 /**
40 * {@link Consumer} implementation which sums up the values of a 'feature' of all objects it consumes
41 * and return the sum as 'sum' property of type 'type'.<br/><br/>
42 * Created: 03.04.2010 07:41:42
43 *
44 * @author Volker Bergmann
45 * @since 0.6.0
46 */
47 public class AddingConsumer extends AbstractConsumer {
48
49 private Accessor<Object, Number> accessor;
50
51 private Converter<Number, ? extends Number> converter;
52
53 private Number sum;
54
55 /**
56 * Instantiates a new Adding consumer.
57 */
58 public AddingConsumer() {
59 this(null, null);
60 }
61
62 /**
63 * Instantiates a new Adding consumer.
64 *
65 * @param feature the feature
66 * @param type the type
67 */
68 public AddingConsumer(String feature, String type) {
69 setFeature(feature);
70 setType(type);
71 }
72
73 /**
74 * Sets feature.
75 *
76 * @param feature the feature
77 */
78 public void setFeature(String feature) {
79 this.accessor = (feature != null ? new FeatureAccessor<>(feature, true) : null);
80 }
81
82 /**
83 * Sets type.
84 *
85 * @param typeName the type name
86 */
87 @SuppressWarnings({"unchecked", "rawtypes"})
88 public void setType(String typeName) {
89 if (StringUtil.isEmpty(typeName)) {
90 typeName = "double";
91 }
92 Class<? extends Number> numberType = (Class<? extends Number>) PrimitiveType.getInstance(typeName).getJavaType();
93 this.converter = new NumberToNumberConverter(Number.class, numberType);
94 this.sum = converter.convert(0);
95 }
96
97 /**
98 * Gets sum.
99 *
100 * @return the sum
101 */
102 public Number getSum() {
103 return this.sum;
104 }
105
106 @Override
107 public void startProductConsumption(Object object) {
108 Number addend = converter.convert(accessor.getValue(object));
109 this.sum = (Number) ArithmeticEngine.defaultInstance().add(sum, addend);
110 }
111
112 }