Module org.elasticsearch.server

Package org.elasticsearch.index.codec

Class ForUtil

java.lang.Object

org.elasticsearch.index.codec.ForUtil

public final class ForUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BLOCK_SIZE
static final int	BLOCK_SIZE_SHIFT

Method Summary

Modifier and Type	Method	Description
static void	decode(int bitsPerValue, org.apache.lucene.store.DataInput in, long[] longs)	Decode an encoded input stream into an array of longs.
static void	decodeTo32(int bitsPerValue, org.apache.lucene.store.DataInput in, long[] longs)	Decodes an encoded input stream into an array of longs, such that each long contains two values, each represented with 32 bits.
static void	encode(long[] longs, int bitsPerValue, org.apache.lucene.store.DataOutput out)	Encode an array of longs into out.
static int	numBytes(int bitsPerValue)	Number of bytes required to encode an array of BLOCK_SIZE longs with bitsPerValue bits per value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

BLOCK_SIZE_SHIFT

public static final int BLOCK_SIZE_SHIFT

See Also:

• Constant Field Values

BLOCK_SIZE

public static final int BLOCK_SIZE

See Also:

• Constant Field Values

Method Details

encode

public static void encode(long[] longs,
 int bitsPerValue,
 org.apache.lucene.store.DataOutput out)
                   throws IOException

Encode an array of longs into out. The array size is expected to be a multiple of BLOCK_SIZE.

Throws:

IOException

numBytes

public static int numBytes(int bitsPerValue)

Number of bytes required to encode an array of BLOCK_SIZE longs with bitsPerValue bits per value.

decode

public static void decode(int bitsPerValue,
 org.apache.lucene.store.DataInput in,
 long[] longs)
                   throws IOException

Decode an encoded input stream into an array of longs. The array size is expected to be a multiple of BLOCK_SIZE.

Throws:

IOException

decodeTo32

public static void decodeTo32(int bitsPerValue,
 org.apache.lucene.store.DataInput in,
 long[] longs)
                       throws IOException

Decodes an encoded input stream into an array of longs, such that each long contains two values, each represented with 32 bits. Values [0..63] are encoded in the high-order bits of longs [0..63], and values [64..127] are encoded in the low-order bits of longs [0..63]. This representation allows subsequent operations to be performed on two values at a time. The size of the output array is expected to be a multiple of BLOCK_SIZE.

Throws:

IOException