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DoubleTypeOps xref
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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.giraph.types.ops;
19  
20  import org.apache.giraph.types.ops.collections.array.WDoubleArrayList;
21  import org.apache.hadoop.io.DoubleWritable;
22  
23  import java.io.DataInput;
24  import java.io.IOException;
25  
26  // AUTO-GENERATED class via class:
27  // org.apache.giraph.generate.GeneratePrimitiveClasses
28  
29  /** TypeOps implementation for working with DoubleWritable type */
30  public enum DoubleTypeOps implements
31      PrimitiveTypeOps<DoubleWritable>, NumericTypeOps<DoubleWritable> {
32    /** Singleton instance */
33    INSTANCE;
34  
35    @Override
36    public Class<DoubleWritable> getTypeClass() {
37      return DoubleWritable.class;
38    }
39  
40    @Override
41    public DoubleWritable create() {
42      return new DoubleWritable();
43    }
44  
45    @Override
46    public DoubleWritable createCopy(DoubleWritable from) {
47      return new DoubleWritable(from.get());
48    }
49  
50    @Override
51    public void set(DoubleWritable to, DoubleWritable from) {
52      to.set(from.get());
53    }
54  
55    @Override
56    public WDoubleArrayList createArrayList() {
57      return new WDoubleArrayList();
58    }
59  
60    @Override
61    public WDoubleArrayList createArrayList(int capacity) {
62      return new WDoubleArrayList(capacity);
63    }
64  
65    @Override
66    public WDoubleArrayList readNewArrayList(DataInput in) throws IOException {
67      return WDoubleArrayList.readNew(in);
68    }
69  
70    @Override
71    public DoubleWritable createZero() {
72      return new DoubleWritable(0);
73    }
74  
75    @Override
76    public DoubleWritable createOne() {
77      return new DoubleWritable(1);
78    }
79  
80    @Override
81    public DoubleWritable createMinNegativeValue() {
82      return new DoubleWritable(Double.NEGATIVE_INFINITY);
83    }
84  
85    @Override
86    public DoubleWritable createMaxPositiveValue() {
87      return new DoubleWritable(Double.POSITIVE_INFINITY);
88    }
89  
90    @Override
91    public void plusInto(DoubleWritable value, DoubleWritable increment) {
92      value.set(value.get() + increment.get());
93    }
94  
95    @Override
96    public void multiplyInto(DoubleWritable value, DoubleWritable multiplier) {
97      value.set(value.get() * multiplier.get());
98    }
99  
100   @Override
101   public void negate(DoubleWritable value) {
102     value.set(-value.get());
103   }
104 
105   @Override
106   public int compare(DoubleWritable value1, DoubleWritable value2) {
107     return Double.compare(value1.get(), value2.get());
108   }
109 }