org.apache.hadoop.record

クラス Utils

java.lang.Object

org.apache.hadoop.record.Utils

非推奨です。

Replaced by Avro.

@Deprecated
 @InterfaceAudience.Public
 @InterfaceStability.Stable
public class Utils
extends Object

Various utility functions for Hadoop record I/O runtime.

フィールドのサマリー

フィールド

修飾子とタイプ	フィールドと説明
static char[]	hexchars 非推奨です。

メソッドのサマリー

修飾子とタイプ	メソッドと説明
static int	compareBytes(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) 非推奨です。 Lexicographic order of binary data.
static int	getVIntSize(long i) 非推奨です。 Get the encoded length if an integer is stored in a variable-length format
static double	readDouble(byte[] bytes, int start) 非推奨です。 Parse a double from a byte array.
static float	readFloat(byte[] bytes, int start) 非推奨です。 Parse a float from a byte array.
static int	readVInt(byte[] bytes, int start) 非推奨です。 Reads a zero-compressed encoded integer from a byte array and returns it.
static int	readVInt(DataInput in) 非推奨です。 Reads a zero-compressed encoded integer from a stream and returns it.
static long	readVLong(byte[] bytes, int start) 非推奨です。 Reads a zero-compressed encoded long from a byte array and returns it.
static long	readVLong(DataInput in) 非推奨です。 Reads a zero-compressed encoded long from a stream and return it.
static void	writeVInt(DataOutput stream, int i) 非推奨です。 Serializes an int to a binary stream with zero-compressed encoding.
static void	writeVLong(DataOutput stream, long i) 非推奨です。 Serializes a long to a binary stream with zero-compressed encoding.

クラスから継承されたメソッド java.lang.Object

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

フィールドの詳細

hexchars

public static final char[] hexchars

非推奨です。

メソッドの詳細

readFloat

public static float readFloat(byte[] bytes,
                              int start)

非推奨です。

Parse a float from a byte array.

readDouble

public static double readDouble(byte[] bytes,
                                int start)

非推奨です。

Parse a double from a byte array.

readVLong

public static long readVLong(byte[] bytes,
                             int start)
                      throws IOException

非推奨です。

Reads a zero-compressed encoded long from a byte array and returns it.

パラメータ:

bytes - byte array with decode long

start - starting index

戻り値:

deserialized long

例外:

IOException

readVInt

public static int readVInt(byte[] bytes,
                           int start)
                    throws IOException

非推奨です。

Reads a zero-compressed encoded integer from a byte array and returns it.

パラメータ:

bytes - byte array with the encoded integer

start - start index

戻り値:

deserialized integer

例外:

IOException

readVLong

public static long readVLong(DataInput in)
                      throws IOException

非推奨です。

Reads a zero-compressed encoded long from a stream and return it.

パラメータ:

in - input stream

戻り値:

deserialized long

例外:

IOException

readVInt

public static int readVInt(DataInput in)
                    throws IOException

非推奨です。

Reads a zero-compressed encoded integer from a stream and returns it.

パラメータ:

in - input stream

戻り値:

deserialized integer

例外:

IOException

getVIntSize

public static int getVIntSize(long i)

非推奨です。

Get the encoded length if an integer is stored in a variable-length format

戻り値:

the encoded length

writeVLong

public static void writeVLong(DataOutput stream,
                              long i)
                       throws IOException

非推奨です。

Serializes a long to a binary stream with zero-compressed encoding. For -112 <= i <= 127, only one byte is used with the actual value. For other values of i, the first byte value indicates whether the long is positive or negative, and the number of bytes that follow. If the first byte value v is between -113 and -120, the following long is positive, with number of bytes that follow are -(v+112). If the first byte value v is between -121 and -128, the following long is negative, with number of bytes that follow are -(v+120). Bytes are stored in the high-non-zero-byte-first order.

パラメータ:

stream - Binary output stream

i - Long to be serialized

例外:

IOException

writeVInt

public static void writeVInt(DataOutput stream,
                             int i)
                      throws IOException

非推奨です。

Serializes an int to a binary stream with zero-compressed encoding.

パラメータ:

stream - Binary output stream

i - int to be serialized

例外:

IOException

compareBytes

public static int compareBytes(byte[] b1,
                               int s1,
                               int l1,
                               byte[] b2,
                               int s2,
                               int l2)

非推奨です。

Lexicographic order of binary data.