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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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java.lang.Objectcom.tangosol.util.Base
com.tangosol.io.AbstractReadBuffer
com.tangosol.io.MultiBufferReadBuffer
public class MultiBufferReadBuffer
The MultiBufferReadBuffer is a ReadBuffer implementation that presents a view across any number of underlying ReadBuffer objects, as if they were appended end-to-end into a single ReadBuffer.
Nested Class Summary | |
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class |
MultiBufferReadBuffer.MultiBufferInput
An implementation of the BufferInput interface that is backed by a series of the underlying ReadBuffer BufferInput objects. |
Nested classes/interfaces inherited from class com.tangosol.io.AbstractReadBuffer |
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AbstractReadBuffer.AbstractBufferInput |
Nested classes/interfaces inherited from interface com.tangosol.io.ReadBuffer |
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ReadBuffer.BufferInput |
Field Summary |
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Fields inherited from class com.tangosol.io.AbstractReadBuffer |
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NO_BINARY, NO_BYTES |
Constructor Summary | |
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MultiBufferReadBuffer(ReadBuffer[] abuf)
Construct a MultiBufferReadBuffer from an array of underlying ReadBuffer objects. |
Method Summary | |
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byte |
byteAt(int of)
Returns the byte at the specified offset. |
void |
copyBytes(int ofBegin,
int ofEnd,
byte[] abDest,
int ofDest)
Copies bytes from this ReadBuffer into the destination byte array. |
protected ReadBuffer |
getBuffer(int iBuffer)
Obtain the specified buffer. |
protected int |
getBufferCount()
Determine the number of ReadBuffer objects that contain the data presented by this MultiBufferReadBuffer. |
protected int |
getBufferIndexByOffset(int of)
Determine which underlying ReadBuffer contains the specified offset. |
protected int |
getBufferOffset(int iBuffer)
Determine the offset of the specified buffer. |
protected ReadBuffer.BufferInput |
instantiateBufferInput()
Factory method: Instantiate a BufferInput object to read data from the ReadBuffer. |
protected ReadBuffer |
instantiateReadBuffer(int of,
int cb)
Factory method: Instantiate a ReadBuffer for a portion of this ReadBuffer. |
int |
length()
Determine the length of the buffer. |
Methods inherited from class com.tangosol.io.AbstractReadBuffer |
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checkBounds, clone, equals, getBufferInput, getReadBuffer, toBinary, toBinary, toByteArray, toByteArray |
Constructor Detail |
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public MultiBufferReadBuffer(ReadBuffer[] abuf)
abuf
- an array of ReadBuffer objects from which to construct
this MultiBufferReadBufferMethod Detail |
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public int length()
public byte byteAt(int of)
0
to length() - 1
. The first byte
of the sequence is at offset 0
, the next at offset
1
, and so on, as for array indexing.
of
- the offset (index) of the byte
public void copyBytes(int ofBegin, int ofEnd, byte[] abDest, int ofDest)
The first byte to be copied is at offset ofBegin
;
the last byte to be copied is at offset ofEnd-1
(thus the total number of bytes to be copied is ofEnd -
ofBegin
). The bytes are copied into the subarray of
abDest
starting at offset ofDest
and ending at index:
ofDest + (ofEnd - ofBegin) - 1
This method is the ReadBuffer equivalent of
String.getChars(int, int, char[], int)
. It allows the caller
to extract a chunk of bytes into the caller's own array.
ofBegin
- offset of the first byte in the ReadBuffer to copyofEnd
- offset after the last byte in the ReadBuffer to copyabDest
- the destination byte arrayofDest
- the offset in the destination byte array to copy the
first byte toprotected ReadBuffer instantiateReadBuffer(int of, int cb)
instantiateReadBuffer
in class AbstractReadBuffer
of
- the beginning index, inclusivecb
- the number of bytes to include in the resulting ReadBuffer
protected ReadBuffer.BufferInput instantiateBufferInput()
instantiateBufferInput
in class AbstractReadBuffer
protected int getBufferCount()
protected int getBufferOffset(int iBuffer)
iBuffer
- an index 0 <= iBuffer < getBufferCount()
protected ReadBuffer getBuffer(int iBuffer)
iBuffer
- an index 0 <= iBuffer < getBufferCount()
protected int getBufferIndexByOffset(int of)
of
- an offset into this MultiBufferReadBuffer
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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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