container-search/src/main/java/com/yahoo/prelude/fastsearch/IntegerField.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
 * Class representing a integer field in the result set
 *
 */
package com.yahoo.prelude.fastsearch;


import java.nio.ByteBuffer;

import com.yahoo.search.result.NanNumber;
import com.yahoo.data.access.Inspector;

/**
 * @author  <a href="mailto:borud@yahoo-inc.com">Bj\u00f8rn Borud</a>
 */
public class IntegerField extends DocsumField {
    static final int EMPTY_VALUE = Integer.MIN_VALUE;

    public IntegerField(String name) {
        super(name);
    }

    private Object convert(int value) {
        if (value == EMPTY_VALUE) {
            return NanNumber.NaN;
        } else {
            return Integer.valueOf(value);
        }
    }

    public Object decode(ByteBuffer b) {
        return convert(b.getInt());
    }

    public Object decode(ByteBuffer b, FastHit hit) {
        Object field = decode(b);
        hit.setField(name, field);
        return field;
    }

    public String toString() {
        return "field " + getName() + " type int";
    }

    public int getLength(ByteBuffer b) {
        int offset = b.position();
        final int bytelength = Integer.SIZE >> 3;
        b.position(offset + bytelength);
        return bytelength;
    }

    public Object convert(Inspector value) {
        return convert((int)value.asLong(EMPTY_VALUE));
    }
}