ByteBufferUtils (Apache HBase - Common 1.7.2 API)

java.lang.Object
- org.apache.hadoop.hbase.util.ByteBufferUtils

已过时。
This class will become IA.Private in HBase 3.0. Downstream folks shouldn't use it.
```
@Deprecated
@InterfaceAudience.Public
@InterfaceStability.Evolving
public final class ByteBufferUtils
extends Object
```
Utility functions for working with byte buffers, such as reading/writing variable-length long numbers.

字段概要

字段
限定符和类型	字段和说明
`static int`	`NEXT_BIT_MASK` 已过时。
`static int`	`NEXT_BIT_SHIFT` 已过时。
`static boolean`	`UNSAFE_UNALIGNED` 已过时。
`static int`	`VALUE_MASK` 已过时。

方法概要

方法
限定符和类型	方法和说明
`static boolean`	`arePartsEqual(ByteBuffer buffer, int offsetLeft, int lengthLeft, int offsetRight, int lengthRight)` 已过时。 Check whether two parts in the same buffer are equal.
`static int`	`compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2)` 已过时。
`static int`	`compareTo(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2)` 已过时。
`static int`	`compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2)` 已过时。
`static void`	`copyBufferToStream(OutputStream out, ByteBuffer in, int offset, int length)` 已过时。 Copy data from a buffer to an output stream.
`static void`	`copyFromArrayToBuffer(ByteBuffer out, int outOffset, byte[] in, int inOffset, int length)` 已过时。 Copies bytes from given array's offset to length part into the given buffer.
`static void`	`copyFromBufferToArray(byte[] out, ByteBuffer in, int sourceOffset, int destinationOffset, int length)` 已过时。 Copies specified number of bytes from given offset of 'in' ByteBuffer to the array.
`static void`	`copyFromBufferToBuffer(ByteBuffer out, ByteBuffer in, int sourceOffset, int length)` 已过时。 Copy from one buffer to another from given offset.
`static void`	`copyFromBufferToBuffer(ByteBuffer out, ByteBuffer in, int sourceOffset, int destinationOffset, int length)` 已过时。 Copy from one buffer to another from given offset.
`static void`	`copyFromStreamToBuffer(ByteBuffer out, DataInputStream in, int length)` 已过时。 Copy the given number of bytes from the given stream and put it at the current position of the given buffer, updating the position in the buffer.
`static ByteBuffer`	`drainInputStreamToBuffer(InputStream is)` 已过时。 Copy from the InputStream to a new heap ByteBuffer until the InputStream is exhausted.
`static boolean`	`equals(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2)` 已过时。
`static void`	`extendLimit(ByteBuffer buffer, int numBytes)` 已过时。
`static int`	`findCommonPrefix(byte[] left, int leftOffset, int leftLength, byte[] right, int rightOffset, int rightLength)` 已过时。 Find length of common prefix in two arrays.
`static int`	`findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right, int rightOffset, int rightLength)` 已过时。 Find length of common prefix in two arrays.
`static int`	`findCommonPrefix(ByteBuffer buffer, int offsetLeft, int offsetRight, int limit)` 已过时。 Find length of common prefix of two parts in the buffer
`static int`	`intFitsIn(int value)` 已过时。 Check how many bytes is required to store value.
`static int`	`longFitsIn(long value)` 已过时。 Check how many bytes are required to store value.
`static void`	`moveBufferToStream(OutputStream out, ByteBuffer in, int length)` 已过时。 Copy the data to the output stream and update position in buffer.
`static int`	`putCompressedInt(OutputStream out, int value)` 已过时。 Put in buffer integer using 7 bit encoding.
`static void`	`putInt(ByteBuffer buffer, int val)` 已过时。 Put an int value out to the given ByteBuffer's current position in big-endian format.
`static int`	`putInt(ByteBuffer buffer, int index, int val)` 已过时。
`static void`	`putInt(OutputStream out, int value)` 已过时。 Put in output stream 32 bit integer (Big Endian byte order).
`static int`	`putLong(ByteBuffer buffer, int index, long val)` 已过时。
`static void`	`putLong(ByteBuffer buffer, long val)` 已过时。 Put a long value out to the given ByteBuffer's current position in big-endian format.
`static int`	`putLong(OutputStream out, long value, int fitInBytes)` 已过时。
`static int`	`putShort(ByteBuffer buffer, int index, short val)` 已过时。
`static void`	`putShort(ByteBuffer buffer, short val)` 已过时。 Put a short value out to the given ByteBuffer's current position in big-endian format.
`static int`	`readCompressedInt(ByteBuffer buffer)` 已过时。 Read integer from buffer coded in 7 bits and increment position.
`static int`	`readCompressedInt(InputStream input)` 已过时。 Read integer from stream coded in 7 bits and increment position.
`static long`	`readLong(ByteBuffer in, int fitInBytes)` 已过时。 Read long which was written to fitInBytes bytes and increment position.
`static long`	`readLong(InputStream in, int fitInBytes)` 已过时。 Read long which was written to fitInBytes bytes and increment position.
`static long`	`readVLong(ByteBuffer in)` 已过时。 Similar to `WritableUtils.readVLong(DataInput)` but reads from a `ByteBuffer`.
`static void`	`skip(ByteBuffer buffer, int length)` 已过时。 Increment position in buffer.
`static byte`	`toByte(ByteBuffer buffer, int offset)` 已过时。
`static byte[]`	`toBytes(ByteBuffer buffer, int startPosition)` 已过时。 Copy the bytes from position to limit into a new byte[] of the exact length and sets the position and limit back to their original values (though not thread safe).
`static byte[]`	`toBytes(ByteBuffer buffer, int offset, int length)` 已过时。 Copy the given number of bytes from specified offset into a new byte[]
`static int`	`toInt(ByteBuffer buffer)` 已过时。 Reads an int value at the given buffer's current position.
`static int`	`toInt(ByteBuffer buffer, int offset)` 已过时。 Reads an int value at the given buffer's offset.
`static long`	`toLong(ByteBuffer buffer, int offset)` 已过时。 Reads a long value at the given buffer's offset.
`static short`	`toShort(ByteBuffer buffer, int offset)` 已过时。 Reads a short value at the given buffer's offset.
`static void`	`writeVLong(ByteBuffer out, long i)` 已过时。 Similar to `WritableUtils.writeVLong(java.io.DataOutput, long)`, but writes to a `ByteBuffer`.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - VALUE_MASK
```
public static final int VALUE_MASK
```
    已过时。
    
    另请参阅:
    常量字段值
  - NEXT_BIT_SHIFT
```
public static final int NEXT_BIT_SHIFT
```
    已过时。
    
    另请参阅:
    常量字段值
  - NEXT_BIT_MASK
```
public static final int NEXT_BIT_MASK
```
    已过时。
    
    另请参阅:
    常量字段值
  - UNSAFE_UNALIGNED
```
public static final boolean UNSAFE_UNALIGNED
```
    已过时。
- 方法详细资料
  - writeVLong
```
public static void writeVLong(ByteBuffer out,
              long i)
```
    已过时。
    
    Similar to WritableUtils.writeVLong(java.io.DataOutput, long), but writes to a ByteBuffer.
  - readVLong
```
public static long readVLong(ByteBuffer in)
```
    已过时。
    
    Similar to WritableUtils.readVLong(DataInput) but reads from a ByteBuffer.
  - putCompressedInt
```
public static int putCompressedInt(OutputStream out,
                   int value)
                            throws IOException
```
    已过时。
    
    Put in buffer integer using 7 bit encoding. For each written byte: 7 bits are used to store value 1 bit is used to indicate whether there is next bit.
    
    参数:
    value - Int to be compressed.
    out - Where to put compressed data
    
    返回:
    Number of bytes written.
    
    抛出:
    
    IOException - on stream error
  - putInt
```
public static void putInt(OutputStream out,
          int value)
                   throws IOException
```
    已过时。
    
    Put in output stream 32 bit integer (Big Endian byte order).
    
    参数:
    out - Where to put integer.
    value - Value of integer.
    
    抛出:
    
    IOException - On stream error.
  - toByte
```
public static byte toByte(ByteBuffer buffer,
          int offset)
```
    已过时。
  - moveBufferToStream
```
public static void moveBufferToStream(OutputStream out,
                      ByteBuffer in,
                      int length)
                               throws IOException
```
    已过时。
    
    Copy the data to the output stream and update position in buffer.
    
    参数:
    out - the stream to write bytes to
    in - the buffer to read bytes from
    length - the number of bytes to copy
    
    抛出:
    
    IOException
  - copyBufferToStream
```
public static void copyBufferToStream(OutputStream out,
                      ByteBuffer in,
                      int offset,
                      int length)
                               throws IOException
```
    已过时。
    
    Copy data from a buffer to an output stream. Does not update the position in the buffer.
    
    参数:
    out - the stream to write bytes to
    in - the buffer to read bytes from
    offset - the offset in the buffer (from the buffer's array offset) to start copying bytes from
    length - the number of bytes to copy
    
    抛出:
    
    IOException
  - putLong
```
public static int putLong(OutputStream out,
          long value,
          int fitInBytes)
                   throws IOException
```
    已过时。
    
    抛出:
    
    IOException
  - longFitsIn
```
public static int longFitsIn(long value)
```
    已过时。
    
    Check how many bytes are required to store value.
    
    参数:
    value - Value which size will be tested.
    
    返回:
    How many bytes are required to store value.
  - intFitsIn
```
public static int intFitsIn(int value)
```
    已过时。
    
    Check how many bytes is required to store value.
    
    参数:
    value - Value which size will be tested.
    
    返回:
    How many bytes are required to store value.
  - readCompressedInt
```
public static int readCompressedInt(InputStream input)
                             throws IOException
```
    已过时。
    
    Read integer from stream coded in 7 bits and increment position.
    
    返回:
    the integer that has been read
    
    抛出:
    
    IOException
  - readCompressedInt
```
public static int readCompressedInt(ByteBuffer buffer)
```
    已过时。
    
    Read integer from buffer coded in 7 bits and increment position.
    
    返回:
    Read integer.
  - readLong
```
public static long readLong(InputStream in,
            int fitInBytes)
                     throws IOException
```
    已过时。
    
    Read long which was written to fitInBytes bytes and increment position.
    
    参数:
    fitInBytes - In how many bytes given long is stored.
    
    返回:
    The value of parsed long.
    
    抛出:
    
    IOException
  - readLong
```
public static long readLong(ByteBuffer in,
            int fitInBytes)
```
    已过时。
    
    Read long which was written to fitInBytes bytes and increment position.
    
    参数:
    fitInBytes - In how many bytes given long is stored.
    
    返回:
    The value of parsed long.
  - copyFromStreamToBuffer
```
public static void copyFromStreamToBuffer(ByteBuffer out,
                          DataInputStream in,
                          int length)
                                   throws IOException
```
    已过时。
    
    Copy the given number of bytes from the given stream and put it at the current position of the given buffer, updating the position in the buffer.
    
    参数:
    out - the buffer to write data to
    in - the stream to read data from
    length - the number of bytes to read/write
    
    抛出:
    
    IOException
  - drainInputStreamToBuffer
```
public static ByteBuffer drainInputStreamToBuffer(InputStream is)
                                           throws IOException
```
    已过时。
    
    Copy from the InputStream to a new heap ByteBuffer until the InputStream is exhausted.
    
    抛出:
    
    IOException
  - copyFromBufferToBuffer
```
public static void copyFromBufferToBuffer(ByteBuffer out,
                          ByteBuffer in,
                          int sourceOffset,
                          int length)
```
    已过时。
    
    Copy from one buffer to another from given offset.
    Note : This will advance the position marker of out but not change the position maker for in
    
    参数:
    out - destination buffer
    in - source buffer
    sourceOffset - offset in the source buffer
    length - how many bytes to copy
  - copyFromBufferToBuffer
```
public static void copyFromBufferToBuffer(ByteBuffer out,
                          ByteBuffer in,
                          int sourceOffset,
                          int destinationOffset,
                          int length)
```
    已过时。
    
    Copy from one buffer to another from given offset. This will be absolute positional copying and won't affect the position of any of the buffers.
    
    参数:
    in -
    out -
    sourceOffset -
    destinationOffset -
    length -
  - findCommonPrefix
```
public static int findCommonPrefix(ByteBuffer buffer,
                   int offsetLeft,
                   int offsetRight,
                   int limit)
```
    已过时。
    
    Find length of common prefix of two parts in the buffer
    
    参数:
    buffer - Where parts are located.
    offsetLeft - Offset of the first part.
    offsetRight - Offset of the second part.
    limit - Maximal length of common prefix.
    
    返回:
    Length of prefix.
  - findCommonPrefix
```
public static int findCommonPrefix(byte[] left,
                   int leftOffset,
                   int leftLength,
                   byte[] right,
                   int rightOffset,
                   int rightLength)
```
    已过时。
    
    Find length of common prefix in two arrays.
    
    参数:
    left - Array to be compared.
    leftOffset - Offset in left array.
    leftLength - Length of left array.
    right - Array to be compared.
    rightOffset - Offset in right array.
    rightLength - Length of right array.
  - findCommonPrefix
```
public static int findCommonPrefix(ByteBuffer left,
                   int leftOffset,
                   int leftLength,
                   ByteBuffer right,
                   int rightOffset,
                   int rightLength)
```
    已过时。
    
    Find length of common prefix in two arrays.
    
    参数:
    left - ByteBuffer to be compared.
    leftOffset - Offset in left ByteBuffer.
    leftLength - Length of left ByteBuffer.
    right - ByteBuffer to be compared.
    rightOffset - Offset in right ByteBuffer.
    rightLength - Length of right ByteBuffer.
  - arePartsEqual
```
public static boolean arePartsEqual(ByteBuffer buffer,
                    int offsetLeft,
                    int lengthLeft,
                    int offsetRight,
                    int lengthRight)
```
    已过时。
    
    Check whether two parts in the same buffer are equal.
    
    参数:
    buffer - In which buffer there are parts
    offsetLeft - Beginning of first part.
    lengthLeft - Length of the first part.
    offsetRight - Beginning of the second part.
    lengthRight - Length of the second part.
    
    返回:
    True if equal
  - skip
```
public static void skip(ByteBuffer buffer,
        int length)
```
    已过时。
    
    Increment position in buffer.
    
    参数:
    buffer - In this buffer.
    length - By that many bytes.
  - extendLimit
```
public static void extendLimit(ByteBuffer buffer,
               int numBytes)
```
    已过时。
  - toBytes
```
public static byte[] toBytes(ByteBuffer buffer,
             int startPosition)
```
    已过时。
    
    Copy the bytes from position to limit into a new byte[] of the exact length and sets the position and limit back to their original values (though not thread safe).
    
    参数:
    buffer - copy from here
    startPosition - put buffer.get(startPosition) into byte[0]
    
    返回:
    a new byte[] containing the bytes in the specified range
  - toBytes
```
public static byte[] toBytes(ByteBuffer buffer,
             int offset,
             int length)
```
    已过时。
    
    Copy the given number of bytes from specified offset into a new byte[]
    
    参数:
    buffer -
    offset -
    length -
    
    返回:
    a new byte[] containing the bytes in the specified range
  - compareTo
```
public static int compareTo(ByteBuffer buf1,
            int o1,
            int l1,
            ByteBuffer buf2,
            int o2,
            int l2)
```
    已过时。
  - equals
```
public static boolean equals(ByteBuffer buf1,
             int o1,
             int l1,
             byte[] buf2,
             int o2,
             int l2)
```
    已过时。
  - compareTo
```
public static int compareTo(byte[] buf1,
            int o1,
            int l1,
            ByteBuffer buf2,
            int o2,
            int l2)
```
    已过时。
  - compareTo
```
public static int compareTo(ByteBuffer buf1,
            int o1,
            int l1,
            byte[] buf2,
            int o2,
            int l2)
```
    已过时。
  - toShort
```
public static short toShort(ByteBuffer buffer,
            int offset)
```
    已过时。
    
    Reads a short value at the given buffer's offset.
    
    参数:
    buffer -
    offset -
    
    返回:
    short value at offset
  - toInt
```
public static int toInt(ByteBuffer buffer)
```
    已过时。
    
    Reads an int value at the given buffer's current position. Also advances the buffer's position
  - toInt
```
public static int toInt(ByteBuffer buffer,
        int offset)
```
    已过时。
    
    Reads an int value at the given buffer's offset.
    
    参数:
    buffer -
    offset -
    
    返回:
    int value at offset
  - toLong
```
public static long toLong(ByteBuffer buffer,
          int offset)
```
    已过时。
    
    Reads a long value at the given buffer's offset.
    
    参数:
    buffer -
    offset -
    
    返回:
    long value at offset
  - putInt
```
public static void putInt(ByteBuffer buffer,
          int val)
```
    已过时。
    
    Put an int value out to the given ByteBuffer's current position in big-endian format. This also advances the position in buffer by int size.
    
    参数:
    buffer - the ByteBuffer to write to
    val - int to write out
  - putInt
```
public static int putInt(ByteBuffer buffer,
         int index,
         int val)
```
    已过时。
  - putShort
```
public static void putShort(ByteBuffer buffer,
            short val)
```
    已过时。
    
    Put a short value out to the given ByteBuffer's current position in big-endian format. This also advances the position in buffer by short size.
    
    参数:
    buffer - the ByteBuffer to write to
    val - short to write out
  - putShort
```
public static int putShort(ByteBuffer buffer,
           int index,
           short val)
```
    已过时。
  - putLong
```
public static void putLong(ByteBuffer buffer,
           long val)
```
    已过时。
    
    Put a long value out to the given ByteBuffer's current position in big-endian format. This also advances the position in buffer by long size.
    
    参数:
    buffer - the ByteBuffer to write to
    val - long to write out
  - putLong
```
public static int putLong(ByteBuffer buffer,
          int index,
          long val)
```
    已过时。
  - copyFromArrayToBuffer
```
public static void copyFromArrayToBuffer(ByteBuffer out,
                         int outOffset,
                         byte[] in,
                         int inOffset,
                         int length)
```
    已过时。
    
    Copies bytes from given array's offset to length part into the given buffer. Puts the bytes to buffer's given position. This doesn't affact the position of buffer.
    
    参数:
    out -
    in -
    inOffset -
    length -
  - copyFromBufferToArray
```
public static void copyFromBufferToArray(byte[] out,
                         ByteBuffer in,
                         int sourceOffset,
                         int destinationOffset,
                         int length)
```
    已过时。
    
    Copies specified number of bytes from given offset of 'in' ByteBuffer to the array. This doesn't affact the position of buffer.
    
    参数:
    out -
    in -
    sourceOffset -
    destinationOffset -
    length -

类 ByteBufferUtils

字段概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

VALUE_MASK

NEXT_BIT_SHIFT

NEXT_BIT_MASK

UNSAFE_UNALIGNED

方法详细资料

writeVLong

readVLong

putCompressedInt

putInt

toByte

moveBufferToStream

copyBufferToStream

putLong

longFitsIn

intFitsIn

readCompressedInt

readCompressedInt

readLong

readLong

copyFromStreamToBuffer

drainInputStreamToBuffer

copyFromBufferToBuffer

copyFromBufferToBuffer

findCommonPrefix

findCommonPrefix

findCommonPrefix

arePartsEqual

skip

extendLimit

toBytes

toBytes

compareTo

equals

compareTo

compareTo

toShort

toInt

toInt

toLong

putInt

putInt

putShort

putShort

putLong

putLong

copyFromArrayToBuffer

copyFromBufferToArray