org.jboss.netty.buffer.AbstractChannelBuffer
org.jboss.netty.buffer.TruncatedChannelBuffer
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java.lang.Object
public class TruncatedChannelBuffer
A derived buffer which hides its parent's tail data beyond a certain index.
It is recommended to use ChannelBuffer.slice() and
ChannelBuffer.slice(int, int) instead of calling the constructor
explicitly.
| Constructor Summary | |
|---|---|
TruncatedChannelBuffer(ChannelBuffer buffer,
int length)
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| Method Summary | |
|---|---|
byte[] |
array()
Returns the backing byte array of this buffer. |
int |
arrayOffset()
Returns the offset of the first byte within the backing byte array of this buffer. |
int |
capacity()
Returns the number of bytes (octets) this buffer can contain. |
ChannelBuffer |
copy(int index,
int length)
Returns a copy of this buffer's sub-region. |
ChannelBuffer |
duplicate()
Returns a buffer which shares the whole region of this buffer. |
ChannelBufferFactory |
factory()
Returns the factory which creates a ChannelBuffer whose
type and default ByteOrder are same with this buffer. |
byte |
getByte(int index)
Gets a byte at the specified absolute index in this buffer. |
void |
getBytes(int index,
byte[] dst,
int dstIndex,
int length)
Transfers this buffer's data to the specified destination starting at the specified absolute index. |
void |
getBytes(int index,
ByteBuffer dst)
Transfers this buffer's data to the specified destination starting at the specified absolute index until the destination's position
reaches its limit. |
void |
getBytes(int index,
ChannelBuffer dst,
int dstIndex,
int length)
Transfers this buffer's data to the specified destination starting at the specified absolute index. |
int |
getBytes(int index,
GatheringByteChannel out,
int length)
Transfers this buffer's data to the specified channel starting at the specified absolute index. |
void |
getBytes(int index,
OutputStream out,
int length)
Transfers this buffer's data to the specified stream starting at the specified absolute index. |
int |
getInt(int index)
Gets a 32-bit integer at the specified absolute index in
this buffer. |
long |
getLong(int index)
Gets a 64-bit long integer at the specified absolute index in
this buffer. |
short |
getShort(int index)
Gets a 16-bit short integer at the specified absolute index in
this buffer. |
int |
getUnsignedMedium(int index)
Gets an unsigned 24-bit medium integer at the specified absolute index in this buffer. |
boolean |
hasArray()
Returns true if and only if this buffer has a backing byte array. |
boolean |
isDirect()
Returns true if and only if this buffer is backed by an
NIO direct buffer. |
ByteOrder |
order()
Returns the endianness of this buffer. |
void |
setByte(int index,
int value)
Sets the specified byte at the specified absolute index in this
buffer. |
void |
setBytes(int index,
byte[] src,
int srcIndex,
int length)
Transfers the specified source array's data to this buffer starting at the specified absolute index. |
void |
setBytes(int index,
ByteBuffer src)
Transfers the specified source buffer's data to this buffer starting at the specified absolute index until the source buffer's position
reaches its limit. |
void |
setBytes(int index,
ChannelBuffer src,
int srcIndex,
int length)
Transfers the specified source buffer's data to this buffer starting at the specified absolute index. |
int |
setBytes(int index,
InputStream in,
int length)
Transfers the content of the specified source stream to this buffer starting at the specified absolute index. |
int |
setBytes(int index,
ScatteringByteChannel in,
int length)
Transfers the content of the specified source channel to this buffer starting at the specified absolute index. |
void |
setInt(int index,
int value)
Sets the specified 32-bit integer at the specified absolute index in this buffer. |
void |
setLong(int index,
long value)
Sets the specified 64-bit long integer at the specified absolute index in this buffer. |
void |
setMedium(int index,
int value)
Sets the specified 24-bit medium integer at the specified absolute index in this buffer. |
void |
setShort(int index,
int value)
Sets the specified 16-bit short integer at the specified absolute index in this buffer. |
ChannelBuffer |
slice(int index,
int length)
Returns a slice of this buffer's sub-region. |
ByteBuffer |
toByteBuffer(int index,
int length)
Converts this buffer's sub-region into a NIO buffer. |
ChannelBuffer |
unwrap()
Returns this buffer's parent that this buffer is wrapping. |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public TruncatedChannelBuffer(ChannelBuffer buffer,
int length)
| Method Detail |
|---|
public ChannelBuffer unwrap()
WrappedChannelBuffer
unwrap in interface WrappedChannelBufferpublic ChannelBufferFactory factory()
ChannelBufferChannelBuffer whose
type and default ByteOrder are same with this buffer.
factory in interface ChannelBufferpublic ByteOrder order()
ChannelBuffer
order in interface ChannelBufferpublic boolean isDirect()
ChannelBuffertrue if and only if this buffer is backed by an
NIO direct buffer.
isDirect in interface ChannelBufferpublic int capacity()
ChannelBuffer
capacity in interface ChannelBufferpublic boolean hasArray()
ChannelBuffertrue if and only if this buffer has a backing byte array.
If this method returns true, you can safely call ChannelBuffer.array() and
ChannelBuffer.arrayOffset().
hasArray in interface ChannelBufferpublic byte[] array()
ChannelBuffer
array in interface ChannelBufferpublic int arrayOffset()
ChannelBuffer
arrayOffset in interface ChannelBufferpublic byte getByte(int index)
ChannelBufferindex in this buffer.
This method does not modify readerIndex or writerIndex of
this buffer.
getByte in interface ChannelBufferpublic short getShort(int index)
ChannelBufferindex in
this buffer. This method does not modify readerIndex or
writerIndex of this buffer.
getShort in interface ChannelBufferpublic int getUnsignedMedium(int index)
ChannelBufferindex in this buffer. This method does not modify
readerIndex or writerIndex of this buffer.
getUnsignedMedium in interface ChannelBufferpublic int getInt(int index)
ChannelBufferindex in
this buffer. This method does not modify readerIndex or
writerIndex of this buffer.
getInt in interface ChannelBufferpublic long getLong(int index)
ChannelBufferindex in
this buffer. This method does not modify readerIndex or
writerIndex of this buffer.
getLong in interface ChannelBufferpublic ChannelBuffer duplicate()
ChannelBufferbuf.slice(0, buf.capacity()).
This method does not modify readerIndex or writerIndex of
this buffer.
duplicate in interface ChannelBuffer
public ChannelBuffer copy(int index,
int length)
ChannelBufferreaderIndex or writerIndex of
this buffer.
copy in interface ChannelBuffer
public ChannelBuffer slice(int index,
int length)
ChannelBufferreaderIndex or writerIndex of
this buffer.
slice in interface ChannelBuffer
public void getBytes(int index,
ChannelBuffer dst,
int dstIndex,
int length)
ChannelBufferindex.
This method does not modify readerIndex or writerIndex
of both the source (i.e. this) and the destination.
getBytes in interface ChannelBufferdstIndex - the first index of the destinationlength - the number of bytes to transfer
public void getBytes(int index,
byte[] dst,
int dstIndex,
int length)
ChannelBufferindex.
This method does not modify readerIndex or writerIndex
of this buffer.
getBytes in interface ChannelBufferdstIndex - the first index of the destinationlength - the number of bytes to transfer
public void getBytes(int index,
ByteBuffer dst)
ChannelBufferindex until the destination's position
reaches its limit.
This method does not modify readerIndex or writerIndex of
this buffer while the destination's position will be increased.
getBytes in interface ChannelBuffer
public void setByte(int index,
int value)
ChannelBufferindex in this
buffer. The 24 high-order bits of the specified value are ignored.
This method does not modify readerIndex or writerIndex of
this buffer.
setByte in interface ChannelBuffer
public void setShort(int index,
int value)
ChannelBufferindex in this buffer. The 16 high-order bits of the specified
value are ignored.
This method does not modify readerIndex or writerIndex of
this buffer.
setShort in interface ChannelBuffer
public void setMedium(int index,
int value)
ChannelBufferindex in this buffer. Please note that the most significant
byte is ignored in the specified value.
This method does not modify readerIndex or writerIndex of
this buffer.
setMedium in interface ChannelBuffer
public void setInt(int index,
int value)
ChannelBufferindex in this buffer.
This method does not modify readerIndex or writerIndex of
this buffer.
setInt in interface ChannelBuffer
public void setLong(int index,
long value)
ChannelBufferindex in this buffer.
This method does not modify readerIndex or writerIndex of
this buffer.
setLong in interface ChannelBuffer
public void setBytes(int index,
byte[] src,
int srcIndex,
int length)
ChannelBufferindex.
This method does not modify readerIndex or writerIndex of
this buffer.
setBytes in interface ChannelBuffer
public void setBytes(int index,
ChannelBuffer src,
int srcIndex,
int length)
ChannelBufferindex.
This method does not modify readerIndex or writerIndex
of both the source (i.e. this) and the destination.
setBytes in interface ChannelBuffersrcIndex - the first index of the sourcelength - the number of bytes to transfer
public void setBytes(int index,
ByteBuffer src)
ChannelBufferindex until the source buffer's position
reaches its limit.
This method does not modify readerIndex or writerIndex of
this buffer.
setBytes in interface ChannelBuffer
public void getBytes(int index,
OutputStream out,
int length)
throws IOException
ChannelBufferindex.
This method does not modify readerIndex or writerIndex of
this buffer.
getBytes in interface ChannelBufferlength - the number of bytes to transfer
IOException - if the specified stream threw an exception during I/O
public int getBytes(int index,
GatheringByteChannel out,
int length)
throws IOException
ChannelBufferindex.
This method does not modify readerIndex or writerIndex of
this buffer.
getBytes in interface ChannelBufferlength - the maximum number of bytes to transfer
IOException - if the specified channel threw an exception during I/O
public int setBytes(int index,
InputStream in,
int length)
throws IOException
ChannelBufferindex.
This method does not modify readerIndex or writerIndex of
this buffer.
setBytes in interface ChannelBufferlength - the number of bytes to transfer
-1 if the specified channel is closed.
IOException - if the specified stream threw an exception during I/O
public int setBytes(int index,
ScatteringByteChannel in,
int length)
throws IOException
ChannelBufferindex.
This method does not modify readerIndex or writerIndex of
this buffer.
setBytes in interface ChannelBufferlength - the maximum number of bytes to transfer
-1 if the specified channel is closed.
IOException - if the specified channel threw an exception during I/O
public ByteBuffer toByteBuffer(int index,
int length)
ChannelBufferreaderIndex or writerIndex of
this buffer.
toByteBuffer in interface ChannelBuffer
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