AbstractChannelBuffer (The Netty Project API Reference (3.2.6.Final))

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org.jboss.netty.buffer
Class AbstractChannelBuffer

java.lang.Object
  org.jboss.netty.buffer.AbstractChannelBuffer

All Implemented Interfaces:: Comparable<ChannelBuffer>, ChannelBuffer

Direct Known Subclasses:: ByteBufferBackedChannelBuffer, CompositeChannelBuffer, DuplicatedChannelBuffer, DynamicChannelBuffer, HeapChannelBuffer, ReadOnlyChannelBuffer, SlicedChannelBuffer, TruncatedChannelBuffer

public abstract class AbstractChannelBuffer
extends Object
implements ChannelBuffer
extends Object
implements ChannelBuffer

A skeletal implementation of a buffer.

Version:: $Rev: 2211 $, $Date: 2010-03-04 15:34:00 +0900 (Thu, 04 Mar 2010) $
Author:: The Netty Project, Trustin Lee

Constructor Summary
`AbstractChannelBuffer()`

Method Summary
`int`	`bytesBefore(byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`bytesBefore(ChannelBufferIndexFinder indexFinder)` Locates the first place where the specified `indexFinder` returns `true`.
`int`	`bytesBefore(int length, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`bytesBefore(int length, ChannelBufferIndexFinder indexFinder)` Locates the first place where the specified `indexFinder` returns `true`.
`int`	`bytesBefore(int index, int length, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`bytesBefore(int index, int length, ChannelBufferIndexFinder indexFinder)` Locates the first place where the specified `indexFinder` returns `true`.
`protected void`	`checkReadableBytes(int minimumReadableBytes)` Throws an `IndexOutOfBoundsException` if the current readable bytes of this buffer is less than the specified value.
`void`	`clear()` Sets the `readerIndex` and `writerIndex` of this buffer to `0`.
`int`	`compareTo(ChannelBuffer that)` Compares the content of the specified buffer to the content of this buffer.
`ChannelBuffer`	`copy()` Returns a copy of this buffer's readable bytes.
`void`	`discardReadBytes()` Discards the bytes between the 0th index and `readerIndex`.
`void`	`ensureWritableBytes(int writableBytes)` Makes sure the number of the writable bytes is equal to or greater than the specified value.
`boolean`	`equals(Object o)` Determines if the content of the specified buffer is identical to the content of this array.
`void`	`getBytes(int index, byte[] dst)` Transfers this buffer's data to the specified destination starting at the specified absolute `index`.
`void`	`getBytes(int index, ChannelBuffer dst)` Transfers this buffer's data to the specified destination starting at the specified absolute `index` until the destination becomes non-writable.
`void`	`getBytes(int index, ChannelBuffer dst, int length)` Transfers this buffer's data to the specified destination starting at the specified absolute `index`.
`char`	`getChar(int index)` Gets a 2-byte UTF-16 character at the specified absolute `index` in this buffer.
`double`	`getDouble(int index)` Gets a 64-bit floating point number at the specified absolute `index` in this buffer.
`float`	`getFloat(int index)` Gets a 32-bit floating point number at the specified absolute `index` in this buffer.
`int`	`getMedium(int index)` Gets a 24-bit medium integer at the specified absolute `index` in this buffer.
`short`	`getUnsignedByte(int index)` Gets an unsigned byte at the specified absolute `index` in this buffer.
`long`	`getUnsignedInt(int index)` Gets an unsigned 32-bit integer at the specified absolute `index` in this buffer.
`int`	`getUnsignedShort(int index)` Gets an unsigned 16-bit short integer at the specified absolute `index` in this buffer.
`int`	`hashCode()` Returns a hash code which was calculated from the content of this buffer.
`int`	`indexOf(int fromIndex, int toIndex, byte value)` Locates the first occurrence of the specified `value` in this buffer.
`int`	`indexOf(int fromIndex, int toIndex, ChannelBufferIndexFinder indexFinder)` Locates the first place where the specified `indexFinder` returns `true`.
`void`	`markReaderIndex()` Marks the current `readerIndex` in this buffer.
`void`	`markWriterIndex()` Marks the current `writerIndex` in this buffer.
`boolean`	`readable()` Returns `true` if and only if `(this.writerIndex - this.readerIndex)` is greater than `0`.
`int`	`readableBytes()` Returns the number of readable bytes which is equal to `(this.writerIndex - this.readerIndex)`.
`byte`	`readByte()` Gets a byte at the current `readerIndex` and increases the `readerIndex` by `1` in this buffer.
`void`	`readBytes(byte[] dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `dst.length`).
`void`	`readBytes(byte[] dst, int dstIndex, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`void`	`readBytes(ByteBuffer dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` until the destination's position reaches its limit, and increases the `readerIndex` by the number of the transferred bytes.
`void`	`readBytes(ChannelBuffer dst)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` until the destination becomes non-writable, and increases the `readerIndex` by the number of the transferred bytes.
`ChannelBuffer`	`readBytes(ChannelBufferIndexFinder endIndexFinder)` Deprecated.
`void`	`readBytes(ChannelBuffer dst, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`void`	`readBytes(ChannelBuffer dst, int dstIndex, int length)` Transfers this buffer's data to the specified destination starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`int`	`readBytes(GatheringByteChannel out, int length)` Transfers this buffer's data to the specified stream starting at the current `readerIndex`.
`ChannelBuffer`	`readBytes(int length)` Transfers this buffer's data to a newly created buffer starting at the current `readerIndex` and increases the `readerIndex` by the number of the transferred bytes (= `length`).
`void`	`readBytes(OutputStream out, int length)` Transfers this buffer's data to the specified stream starting at the current `readerIndex`.
`char`	`readChar()` Gets a 2-byte UTF-16 character at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`double`	`readDouble()` Gets a 64-bit floating point number at the current `readerIndex` and increases the `readerIndex` by `8` in this buffer.
`int`	`readerIndex()` Returns the `readerIndex` of this buffer.
`void`	`readerIndex(int readerIndex)` Sets the `readerIndex` of this buffer.
`float`	`readFloat()` Gets a 32-bit floating point number at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`int`	`readInt()` Gets a 32-bit integer at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`long`	`readLong()` Gets a 64-bit integer at the current `readerIndex` and increases the `readerIndex` by `8` in this buffer.
`int`	`readMedium()` Gets a 24-bit medium integer at the current `readerIndex` and increases the `readerIndex` by `3` in this buffer.
`short`	`readShort()` Gets a 16-bit short integer at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`ChannelBuffer`	`readSlice(ChannelBufferIndexFinder endIndexFinder)` Deprecated.
`ChannelBuffer`	`readSlice(int length)` Returns a new slice of this buffer's sub-region starting at the current `readerIndex` and increases the `readerIndex` by the size of the new slice (= `length`).
`short`	`readUnsignedByte()` Gets an unsigned byte at the current `readerIndex` and increases the `readerIndex` by `1` in this buffer.
`long`	`readUnsignedInt()` Gets an unsigned 32-bit integer at the current `readerIndex` and increases the `readerIndex` by `4` in this buffer.
`int`	`readUnsignedMedium()` Gets an unsigned 24-bit medium integer at the current `readerIndex` and increases the `readerIndex` by `3` in this buffer.
`int`	`readUnsignedShort()` Gets an unsigned 16-bit short integer at the current `readerIndex` and increases the `readerIndex` by `2` in this buffer.
`void`	`resetReaderIndex()` Repositions the current `readerIndex` to the marked `readerIndex` in this buffer.
`void`	`resetWriterIndex()` Repositions the current `writerIndex` to the marked `writerIndex` in this buffer.
`void`	`setBytes(int index, byte[] src)` Transfers the specified source array's data to this buffer starting at the specified absolute `index`.
`void`	`setBytes(int index, ChannelBuffer src)` Transfers the specified source buffer's data to this buffer starting at the specified absolute `index` until the source buffer becomes unreadable.
`void`	`setBytes(int index, ChannelBuffer src, int length)` Transfers the specified source buffer's data to this buffer starting at the specified absolute `index`.
`void`	`setChar(int index, int value)` Sets the specified 2-byte UTF-16 character at the specified absolute `index` in this buffer.
`void`	`setDouble(int index, double value)` Sets the specified 64-bit floating-point number at the specified absolute `index` in this buffer.
`void`	`setFloat(int index, float value)` Sets the specified 32-bit floating-point number at the specified absolute `index` in this buffer.
`void`	`setIndex(int readerIndex, int writerIndex)` Sets the `readerIndex` and `writerIndex` of this buffer in one shot.
`void`	`setZero(int index, int length)` Fills this buffer with `NUL (0x00)` starting at the specified absolute `index`.
`int`	`skipBytes(ChannelBufferIndexFinder firstIndexFinder)` Deprecated.
`void`	`skipBytes(int length)` Increases the current `readerIndex` by the specified `length` in this buffer.
`ChannelBuffer`	`slice()` Returns a slice of this buffer's readable bytes.
`ByteBuffer`	`toByteBuffer()` Converts this buffer's readable bytes into a NIO buffer.
`ByteBuffer[]`	`toByteBuffers()` Converts this buffer's readable bytes into an array of NIO buffers.
`ByteBuffer[]`	`toByteBuffers(int index, int length)` Converts this buffer's sub-region into an array of NIO buffers.
`String`	`toString()` Returns the string representation of this buffer.
`String`	`toString(Charset charset)` Decodes this buffer's readable bytes into a string with the specified character set name.
`String`	`toString(int index, int length, Charset charset)` Decodes this buffer's sub-region into a string with the specified character set.
`String`	`toString(int index, int length, String charsetName)` Deprecated.
`String`	`toString(int index, int length, String charsetName, ChannelBufferIndexFinder terminatorFinder)` Deprecated.
`String`	`toString(String charsetName)` Deprecated.
`String`	`toString(String charsetName, ChannelBufferIndexFinder terminatorFinder)` Deprecated.
`boolean`	`writable()` Returns `true` if and only if `(this.capacity - this.writerIndex)` is greater than `0`.
`int`	`writableBytes()` Returns the number of writable bytes which is equal to `(this.capacity - this.writerIndex)`.
`void`	`writeByte(int value)` Sets the specified byte at the current `writerIndex` and increases the `writerIndex` by `1` in this buffer.
`void`	`writeBytes(byte[] src)` Transfers the specified source array's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `src.length`).
`void`	`writeBytes(byte[] src, int srcIndex, int length)` Transfers the specified source array's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`void`	`writeBytes(ByteBuffer src)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` until the source buffer's position reaches its limit, and increases the `writerIndex` by the number of the transferred bytes.
`void`	`writeBytes(ChannelBuffer src)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` until the source buffer becomes unreadable, and increases the `writerIndex` by the number of the transferred bytes.
`void`	`writeBytes(ChannelBuffer src, int length)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`void`	`writeBytes(ChannelBuffer src, int srcIndex, int length)` Transfers the specified source buffer's data to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes (= `length`).
`int`	`writeBytes(InputStream in, int length)` Transfers the content of the specified stream to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes.
`int`	`writeBytes(ScatteringByteChannel in, int length)` Transfers the content of the specified channel to this buffer starting at the current `writerIndex` and increases the `writerIndex` by the number of the transferred bytes.
`void`	`writeChar(int value)` Sets the specified 2-byte UTF-16 character at the current `writerIndex` and increases the `writerIndex` by `2` in this buffer.
`void`	`writeDouble(double value)` Sets the specified 64-bit floating point number at the current `writerIndex` and increases the `writerIndex` by `8` in this buffer.
`void`	`writeFloat(float value)` Sets the specified 32-bit floating point number at the current `writerIndex` and increases the `writerIndex` by `4` in this buffer.
`void`	`writeInt(int value)` Sets the specified 32-bit integer at the current `writerIndex` and increases the `writerIndex` by `4` in this buffer.
`void`	`writeLong(long value)` Sets the specified 64-bit long integer at the current `writerIndex` and increases the `writerIndex` by `8` in this buffer.
`void`	`writeMedium(int value)` Sets the specified 24-bit medium integer at the current `writerIndex` and increases the `writerIndex` by `3` in this buffer.
`int`	`writerIndex()` Returns the `writerIndex` of this buffer.
`void`	`writerIndex(int writerIndex)` Sets the `writerIndex` of this buffer.
`void`	`writeShort(int value)` Sets the specified 16-bit short integer at the current `writerIndex` and increases the `writerIndex` by `2` in this buffer.
`void`	`writeZero(int length)` Fills this buffer with `NUL (0x00)` starting at the current `writerIndex` and increases the `writerIndex` by the specified `length`.

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.jboss.netty.buffer.ChannelBuffer
`array, arrayOffset, capacity, copy, duplicate, factory, getByte, getBytes, getBytes, getBytes, getBytes, getBytes, getInt, getLong, getShort, getUnsignedMedium, hasArray, isDirect, order, setByte, setBytes, setBytes, setBytes, setBytes, setBytes, setInt, setLong, setMedium, setShort, slice, toByteBuffer`

Constructor Detail

AbstractChannelBuffer

public AbstractChannelBuffer()

Method Detail

readerIndex

public int readerIndex()

Description copied from interface: ChannelBuffer

Returns the readerIndex of this buffer.

Specified by:: readerIndex in interface ChannelBuffer

readerIndex

public void readerIndex(int readerIndex)

Description copied from interface: ChannelBuffer

Sets the readerIndex of this buffer.

Specified by:: readerIndex in interface ChannelBuffer

writerIndex

public int writerIndex()

Description copied from interface: ChannelBuffer

Returns the writerIndex of this buffer.

Specified by:: writerIndex in interface ChannelBuffer

writerIndex

public void writerIndex(int writerIndex)

Description copied from interface: ChannelBuffer

Sets the writerIndex of this buffer.

Specified by:: writerIndex in interface ChannelBuffer

setIndex

public void setIndex(int readerIndex,
                     int writerIndex)

Description copied from interface: ChannelBuffer

Sets the readerIndex and writerIndex of this buffer in one shot. This method is useful when you have to worry about the invocation order of ChannelBuffer.readerIndex(int) and ChannelBuffer.writerIndex(int) methods. For example, the following code will fail:

 // Create a buffer whose readerIndex, writerIndex and capacity are
 // 0, 0 and 8 respectively.
 ChannelBuffer buf = ChannelBuffers.buffer(8);

 // IndexOutOfBoundsException is thrown because the specified
 // readerIndex (2) cannot be greater than the current writerIndex (0).
 buf.readerIndex(2);
 buf.writerIndex(4);

The following code will also fail:

 // Create a buffer whose readerIndex, writerIndex and capacity are
 // 0, 8 and 8 respectively.
 ChannelBuffer buf = ChannelBuffers.wrappedBuffer(new byte[8]);

 // readerIndex becomes 8.
 buf.readLong();

 // IndexOutOfBoundsException is thrown because the specified
 // writerIndex (4) cannot be less than the current readerIndex (8).
 buf.writerIndex(4);
 buf.readerIndex(2);

By contrast, ChannelBuffer.setIndex(int, int) guarantees that it never throws an IndexOutOfBoundsException as long as the specified indexes meet basic constraints, regardless what the current index values of the buffer are:

 // No matter what the current state of the buffer is, the following
 // call always succeeds as long as the capacity of the buffer is not
 // less than 4.
 buf.setIndex(2, 4);

Specified by:: setIndex in interface ChannelBuffer

clear

public void clear()

Description copied from interface: ChannelBuffer

Sets the readerIndex and writerIndex of this buffer to 0. This method is identical to setIndex(0, 0).

Please note that the behavior of this method is different from that of NIO buffer, which sets the limit to the capacity of the buffer.

Specified by:: clear in interface ChannelBuffer

readable

public boolean readable()

Description copied from interface: ChannelBuffer

Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0.

Specified by:: readable in interface ChannelBuffer

writable

public boolean writable()

Description copied from interface: ChannelBuffer

Returns true if and only if (this.capacity - this.writerIndex) is greater than 0.

Specified by:: writable in interface ChannelBuffer

readableBytes

public int readableBytes()

Description copied from interface: ChannelBuffer

Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex).

Specified by:: readableBytes in interface ChannelBuffer

writableBytes

public int writableBytes()

Description copied from interface: ChannelBuffer

Returns the number of writable bytes which is equal to (this.capacity - this.writerIndex).

Specified by:: writableBytes in interface ChannelBuffer

markReaderIndex

public void markReaderIndex()

Description copied from interface: ChannelBuffer

Marks the current readerIndex in this buffer. You can reposition the current readerIndex to the marked readerIndex by calling ChannelBuffer.resetReaderIndex(). The initial value of the marked readerIndex is 0.

Specified by:: markReaderIndex in interface ChannelBuffer

resetReaderIndex

public void resetReaderIndex()

Description copied from interface: ChannelBuffer

Repositions the current readerIndex to the marked readerIndex in this buffer.

Specified by:: resetReaderIndex in interface ChannelBuffer

markWriterIndex

public void markWriterIndex()

Description copied from interface: ChannelBuffer

Marks the current writerIndex in this buffer. You can reposition the current writerIndex to the marked writerIndex by calling ChannelBuffer.resetWriterIndex(). The initial value of the marked writerIndex is 0.

Specified by:: markWriterIndex in interface ChannelBuffer

resetWriterIndex

public void resetWriterIndex()

Description copied from interface: ChannelBuffer

Repositions the current writerIndex to the marked writerIndex in this buffer.

Specified by:: resetWriterIndex in interface ChannelBuffer

discardReadBytes

public void discardReadBytes()

Description copied from interface: ChannelBuffer

Discards the bytes between the 0th index and readerIndex. It moves the bytes between readerIndex and writerIndex to the 0th index, and sets readerIndex and writerIndex to 0 and oldWriterIndex - oldReaderIndex respectively.

Please refer to the class documentation for more detailed explanation.

Specified by:: discardReadBytes in interface ChannelBuffer

ensureWritableBytes

public void ensureWritableBytes(int writableBytes)

Description copied from interface: ChannelBuffer

Makes sure the number of the writable bytes is equal to or greater than the specified value. If there is enough writable bytes in this buffer, this method returns with no side effect. Otherwise:

a non-dynamic buffer will throw an IndexOutOfBoundsException.
a dynamic buffer will expand its capacity so that the number of the writable bytes becomes equal to or greater than the specified value. The expansion involves the reallocation of the internal buffer and consequently memory copy.

Specified by:: ensureWritableBytes in interface ChannelBuffer

Parameters:: writableBytes - the expected minimum number of writable bytes

getUnsignedByte

public short getUnsignedByte(int index)

Description copied from interface: ChannelBuffer

Gets an unsigned byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getUnsignedByte in interface ChannelBuffer

getUnsignedShort

public int getUnsignedShort(int index)

Description copied from interface: ChannelBuffer

Gets an unsigned 16-bit short integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getUnsignedShort in interface ChannelBuffer

getMedium

public int getMedium(int index)

Description copied from interface: ChannelBuffer

Gets a 24-bit medium integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getMedium in interface ChannelBuffer

getUnsignedInt

public long getUnsignedInt(int index)

Description copied from interface: ChannelBuffer

Gets an unsigned 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getUnsignedInt in interface ChannelBuffer

getChar

public char getChar(int index)

Description copied from interface: ChannelBuffer

Gets a 2-byte UTF-16 character at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getChar in interface ChannelBuffer

getFloat

public float getFloat(int index)

Description copied from interface: ChannelBuffer

Gets a 32-bit floating point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getFloat in interface ChannelBuffer

getDouble

public double getDouble(int index)

Description copied from interface: ChannelBuffer

Gets a 64-bit floating point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: getDouble in interface ChannelBuffer

getBytes

public void getBytes(int index,
                     byte[] dst)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer

Specified by:: getBytes in interface ChannelBuffer

getBytes

public void getBytes(int index,
                     ChannelBuffer dst)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the specified absolute index until the destination becomes non-writable. This method is basically same with ChannelBuffer.getBytes(int, ChannelBuffer, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ChannelBuffer.getBytes(int, ChannelBuffer, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).

Specified by:: getBytes in interface ChannelBuffer

getBytes

public void getBytes(int index,
                     ChannelBuffer dst,
                     int length)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the specified absolute index. This method is basically same with ChannelBuffer.getBytes(int, ChannelBuffer, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ChannelBuffer.getBytes(int, ChannelBuffer, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).

Specified by:: getBytes in interface ChannelBuffer

length - the number of bytes to transfer

setChar

public void setChar(int index,
                    int value)

Description copied from interface: ChannelBuffer

Sets the specified 2-byte UTF-16 character at the specified absolute index 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.

Specified by:: setChar in interface ChannelBuffer

setFloat

public void setFloat(int index,
                     float value)

Description copied from interface: ChannelBuffer

Sets the specified 32-bit floating-point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: setFloat in interface ChannelBuffer

setDouble

public void setDouble(int index,
                      double value)

Description copied from interface: ChannelBuffer

Sets the specified 64-bit floating-point number at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: setDouble in interface ChannelBuffer

setBytes

public void setBytes(int index,
                     byte[] src)

Description copied from interface: ChannelBuffer

Transfers the specified source array's data to this buffer starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: setBytes in interface ChannelBuffer

setBytes

public void setBytes(int index,
                     ChannelBuffer src)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the specified absolute index until the source buffer becomes unreadable. This method is basically same with ChannelBuffer.setBytes(int, ChannelBuffer, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ChannelBuffer.setBytes(int, ChannelBuffer, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).

Specified by:: setBytes in interface ChannelBuffer

setBytes

public void setBytes(int index,
                     ChannelBuffer src,
                     int length)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the specified absolute index. This method is basically same with ChannelBuffer.setBytes(int, ChannelBuffer, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ChannelBuffer.setBytes(int, ChannelBuffer, int, int) does not. This method does not modify readerIndex or writerIndex of the source buffer (i.e. this).

Specified by:: setBytes in interface ChannelBuffer

length - the number of bytes to transfer

setZero

public void setZero(int index,
                    int length)

Description copied from interface: ChannelBuffer

Fills this buffer with NUL (0x00) starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: setZero in interface ChannelBuffer

length - the number of NULs to write to the buffer

readByte

public byte readByte()

Description copied from interface: ChannelBuffer

Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Specified by:: readByte in interface ChannelBuffer

readUnsignedByte

public short readUnsignedByte()

Description copied from interface: ChannelBuffer

Gets an unsigned byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Specified by:: readUnsignedByte in interface ChannelBuffer

readShort

public short readShort()

Description copied from interface: ChannelBuffer

Gets a 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.

Specified by:: readShort in interface ChannelBuffer

readUnsignedShort

public int readUnsignedShort()

Description copied from interface: ChannelBuffer

Gets an unsigned 16-bit short integer at the current readerIndex and increases the readerIndex by 2 in this buffer.

Specified by:: readUnsignedShort in interface ChannelBuffer

readMedium

public int readMedium()

Description copied from interface: ChannelBuffer

Gets a 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.

Specified by:: readMedium in interface ChannelBuffer

readUnsignedMedium

public int readUnsignedMedium()

Description copied from interface: ChannelBuffer

Gets an unsigned 24-bit medium integer at the current readerIndex and increases the readerIndex by 3 in this buffer.

Specified by:: readUnsignedMedium in interface ChannelBuffer

readInt

public int readInt()

Description copied from interface: ChannelBuffer

Gets a 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.

Specified by:: readInt in interface ChannelBuffer

readUnsignedInt

public long readUnsignedInt()

Description copied from interface: ChannelBuffer

Gets an unsigned 32-bit integer at the current readerIndex and increases the readerIndex by 4 in this buffer.

Specified by:: readUnsignedInt in interface ChannelBuffer

readLong

public long readLong()

Description copied from interface: ChannelBuffer

Gets a 64-bit integer at the current readerIndex and increases the readerIndex by 8 in this buffer.

Specified by:: readLong in interface ChannelBuffer

readChar

public char readChar()

Description copied from interface: ChannelBuffer

Gets a 2-byte UTF-16 character at the current readerIndex and increases the readerIndex by 2 in this buffer.

Specified by:: readChar in interface ChannelBuffer

readFloat

public float readFloat()

Description copied from interface: ChannelBuffer

Gets a 32-bit floating point number at the current readerIndex and increases the readerIndex by 4 in this buffer.

Specified by:: readFloat in interface ChannelBuffer

readDouble

public double readDouble()

Description copied from interface: ChannelBuffer

Gets a 64-bit floating point number at the current readerIndex and increases the readerIndex by 8 in this buffer.

Specified by:: readDouble in interface ChannelBuffer

readBytes

public ChannelBuffer readBytes(int length)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to a newly created buffer starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length). The returned buffer's readerIndex and writerIndex are 0 and length respectively.

Specified by:: readBytes in interface ChannelBuffer

Parameters:: length - the number of bytes to transfer
Returns:: the newly created buffer which contains the transferred bytes

readBytes

@Deprecated
public ChannelBuffer readBytes(ChannelBufferIndexFinder endIndexFinder)

Deprecated.

Specified by:: readBytes in interface ChannelBuffer

readSlice

public ChannelBuffer readSlice(int length)

Description copied from interface: ChannelBuffer

Returns a new slice of this buffer's sub-region starting at the current readerIndex and increases the readerIndex by the size of the new slice (= length).

Specified by:: readSlice in interface ChannelBuffer

Parameters:: length - the size of the new slice
Returns:: the newly created slice

readSlice

@Deprecated
public ChannelBuffer readSlice(ChannelBufferIndexFinder endIndexFinder)

Deprecated.

Specified by:: readSlice in interface ChannelBuffer

readBytes

public void readBytes(byte[] dst,
                      int dstIndex,
                      int length)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length).

Specified by:: readBytes in interface ChannelBuffer

dstIndex - the first index of the destination

length - the number of bytes to transfer

readBytes

public void readBytes(byte[] dst)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= dst.length).

Specified by:: readBytes in interface ChannelBuffer

readBytes

public void readBytes(ChannelBuffer dst)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex until the destination becomes non-writable, and increases the readerIndex by the number of the transferred bytes. This method is basically same with ChannelBuffer.readBytes(ChannelBuffer, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes while ChannelBuffer.readBytes(ChannelBuffer, int, int) does not.

Specified by:: readBytes in interface ChannelBuffer

readBytes

public void readBytes(ChannelBuffer dst,
                      int length)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length). This method is basically same with ChannelBuffer.readBytes(ChannelBuffer, int, int), except that this method increases the writerIndex of the destination by the number of the transferred bytes (= length) while ChannelBuffer.readBytes(ChannelBuffer, int, int) does not.

Specified by:: readBytes in interface ChannelBuffer

readBytes

public void readBytes(ChannelBuffer dst,
                      int dstIndex,
                      int length)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex and increases the readerIndex by the number of the transferred bytes (= length).

Specified by:: readBytes in interface ChannelBuffer

dstIndex - the first index of the destination

length - the number of bytes to transfer

readBytes

public void readBytes(ByteBuffer dst)

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified destination starting at the current readerIndex until the destination's position reaches its limit, and increases the readerIndex by the number of the transferred bytes.

Specified by:: readBytes in interface ChannelBuffer

readBytes

public int readBytes(GatheringByteChannel out,
                     int length)
              throws IOException

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified stream starting at the current readerIndex.

Specified by:: readBytes in interface ChannelBuffer

length - the maximum number of bytes to transfer
Returns:: the actual number of bytes written out to the specified channel
Throws:: IOException - if the specified channel threw an exception during I/O

readBytes

public void readBytes(OutputStream out,
                      int length)
               throws IOException

Description copied from interface: ChannelBuffer

Transfers this buffer's data to the specified stream starting at the current readerIndex.

Specified by:: readBytes in interface ChannelBuffer

length - the number of bytes to transfer
Throws:: IOException - if the specified stream threw an exception during I/O

skipBytes

public void skipBytes(int length)

Description copied from interface: ChannelBuffer

Increases the current readerIndex by the specified length in this buffer.

Specified by:: skipBytes in interface ChannelBuffer

skipBytes

@Deprecated
public int skipBytes(ChannelBufferIndexFinder firstIndexFinder)

Deprecated.

Specified by:: skipBytes in interface ChannelBuffer

writeByte

public void writeByte(int value)

Description copied from interface: ChannelBuffer

Sets the specified byte at the current writerIndex and increases the writerIndex by 1 in this buffer. The 24 high-order bits of the specified value are ignored.

Specified by:: writeByte in interface ChannelBuffer

writeShort

public void writeShort(int value)

Description copied from interface: ChannelBuffer

Sets the specified 16-bit short integer at the current writerIndex and increases the writerIndex by 2 in this buffer. The 16 high-order bits of the specified value are ignored.

Specified by:: writeShort in interface ChannelBuffer

writeMedium

public void writeMedium(int value)

Description copied from interface: ChannelBuffer

Sets the specified 24-bit medium integer at the current writerIndex and increases the writerIndex by 3 in this buffer.

Specified by:: writeMedium in interface ChannelBuffer

writeInt

public void writeInt(int value)

Description copied from interface: ChannelBuffer

Sets the specified 32-bit integer at the current writerIndex and increases the writerIndex by 4 in this buffer.

Specified by:: writeInt in interface ChannelBuffer

writeLong

public void writeLong(long value)

Description copied from interface: ChannelBuffer

Sets the specified 64-bit long integer at the current writerIndex and increases the writerIndex by 8 in this buffer.

Specified by:: writeLong in interface ChannelBuffer

writeChar

public void writeChar(int value)

Description copied from interface: ChannelBuffer

Sets the specified 2-byte UTF-16 character at the current writerIndex and increases the writerIndex by 2 in this buffer. The 16 high-order bits of the specified value are ignored.

Specified by:: writeChar in interface ChannelBuffer

writeFloat

public void writeFloat(float value)

Description copied from interface: ChannelBuffer

Sets the specified 32-bit floating point number at the current writerIndex and increases the writerIndex by 4 in this buffer.

Specified by:: writeFloat in interface ChannelBuffer

writeDouble

public void writeDouble(double value)

Description copied from interface: ChannelBuffer

Sets the specified 64-bit floating point number at the current writerIndex and increases the writerIndex by 8 in this buffer.

Specified by:: writeDouble in interface ChannelBuffer

writeBytes

public void writeBytes(byte[] src,
                       int srcIndex,
                       int length)

Description copied from interface: ChannelBuffer

Transfers the specified source array's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length).

Specified by:: writeBytes in interface ChannelBuffer

srcIndex - the first index of the source

length - the number of bytes to transfer

writeBytes

public void writeBytes(byte[] src)

Description copied from interface: ChannelBuffer

Transfers the specified source array's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= src.length).

Specified by:: writeBytes in interface ChannelBuffer

writeBytes

public void writeBytes(ChannelBuffer src)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the current writerIndex until the source buffer becomes unreadable, and increases the writerIndex by the number of the transferred bytes. This method is basically same with ChannelBuffer.writeBytes(ChannelBuffer, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes while ChannelBuffer.writeBytes(ChannelBuffer, int, int) does not.

Specified by:: writeBytes in interface ChannelBuffer

writeBytes

public void writeBytes(ChannelBuffer src,
                       int length)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length). This method is basically same with ChannelBuffer.writeBytes(ChannelBuffer, int, int), except that this method increases the readerIndex of the source buffer by the number of the transferred bytes (= length) while ChannelBuffer.writeBytes(ChannelBuffer, int, int) does not.

Specified by:: writeBytes in interface ChannelBuffer

length - the number of bytes to transfer

writeBytes

public void writeBytes(ChannelBuffer src,
                       int srcIndex,
                       int length)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes (= length).

Specified by:: writeBytes in interface ChannelBuffer

srcIndex - the first index of the source

length - the number of bytes to transfer

writeBytes

public void writeBytes(ByteBuffer src)

Description copied from interface: ChannelBuffer

Transfers the specified source buffer's data to this buffer starting at the current writerIndex until the source buffer's position reaches its limit, and increases the writerIndex by the number of the transferred bytes.

Specified by:: writeBytes in interface ChannelBuffer

writeBytes

public int writeBytes(InputStream in,
                      int length)
               throws IOException

Description copied from interface: ChannelBuffer

Transfers the content of the specified stream to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes.

Specified by:: writeBytes in interface ChannelBuffer

length - the number of bytes to transfer
Returns:: the actual number of bytes read in from the specified stream
Throws:: IOException - if the specified stream threw an exception during I/O

writeBytes

public int writeBytes(ScatteringByteChannel in,
                      int length)
               throws IOException

Description copied from interface: ChannelBuffer

Transfers the content of the specified channel to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes.

Specified by:: writeBytes in interface ChannelBuffer

length - the maximum number of bytes to transfer
Returns:: the actual number of bytes read in from the specified channel
Throws:: IOException - if the specified channel threw an exception during I/O

writeZero

public void writeZero(int length)

Description copied from interface: ChannelBuffer

Fills this buffer with NUL (0x00) starting at the current writerIndex and increases the writerIndex by the specified length.

Specified by:: writeZero in interface ChannelBuffer

Parameters:: length - the number of NULs to write to the buffer

copy

public ChannelBuffer copy()

Description copied from interface: ChannelBuffer

Returns a copy of this buffer's readable bytes. Modifying the content of the returned buffer or this buffer does not affect each other at all. This method is identical to buf.copy(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: copy in interface ChannelBuffer

slice

public ChannelBuffer slice()

Description copied from interface: ChannelBuffer

Returns a slice of this buffer's readable bytes. Modifying the content of the returned buffer or this buffer affects each other's content while they maintain separate indexes and marks. This method is identical to buf.slice(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: slice in interface ChannelBuffer

toByteBuffer

public ByteBuffer toByteBuffer()

Description copied from interface: ChannelBuffer

Converts this buffer's readable bytes into a NIO buffer. The returned buffer might or might not share the content with this buffer, while they have separate indexes and marks. This method is identical to buf.toByteBuffer(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: toByteBuffer in interface ChannelBuffer

toByteBuffers

public ByteBuffer[] toByteBuffers()

Description copied from interface: ChannelBuffer

Converts this buffer's readable bytes into an array of NIO buffers. The returned buffers might or might not share the content with this buffer, while they have separate indexes and marks. This method is identical to buf.toByteBuffers(buf.readerIndex(), buf.readableBytes()). This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: toByteBuffers in interface ChannelBuffer

toByteBuffers

public ByteBuffer[] toByteBuffers(int index,
                                  int length)

Description copied from interface: ChannelBuffer

Converts this buffer's sub-region into an array of NIO buffers. The returned buffers might or might not share the content with this buffer, while they have separate indexes and marks. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: toByteBuffers in interface ChannelBuffer

toString

public String toString(Charset charset)

Description copied from interface: ChannelBuffer

Decodes this buffer's readable bytes into a string with the specified character set name. This method is identical to buf.toString(buf.readerIndex(), buf.readableBytes(), charsetName). This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: toString in interface ChannelBuffer

toString

public String toString(int index,
                       int length,
                       Charset charset)

Description copied from interface: ChannelBuffer

Decodes this buffer's sub-region into a string with the specified character set. This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: toString in interface ChannelBuffer

toString

@Deprecated
public String toString(int index,
                                  int length,
                                  String charsetName,
                                  ChannelBufferIndexFinder terminatorFinder)

Deprecated.

Specified by:: toString in interface ChannelBuffer

toString

@Deprecated
public String toString(int index,
                                  int length,
                                  String charsetName)

Deprecated.

Specified by:: toString in interface ChannelBuffer

toString

@Deprecated
public String toString(String charsetName,
                                  ChannelBufferIndexFinder terminatorFinder)

Deprecated.

Specified by:: toString in interface ChannelBuffer

toString

@Deprecated
public String toString(String charsetName)

Deprecated.

Specified by:: toString in interface ChannelBuffer

indexOf

public int indexOf(int fromIndex,
                   int toIndex,
                   byte value)

Description copied from interface: ChannelBuffer

Locates the first occurrence of the specified value in this buffer. The search takes place from the specified fromIndex (inclusive) to the specified toIndex (exclusive).

If fromIndex is greater than toIndex, the search is performed in a reversed order.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: indexOf in interface ChannelBuffer

Returns:: the absolute index of the first occurrence if found. -1 otherwise.

indexOf

public int indexOf(int fromIndex,
                   int toIndex,
                   ChannelBufferIndexFinder indexFinder)

Description copied from interface: ChannelBuffer

Locates the first place where the specified indexFinder returns true. The search takes place from the specified fromIndex (inclusive) to the specified toIndex (exclusive).

If fromIndex is greater than toIndex, the search is performed in a reversed order.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: indexOf in interface ChannelBuffer

Returns:: the absolute index where the specified indexFinder returned true. -1 if the indexFinder did not return true at all.

bytesBefore

public int bytesBefore(byte value)

Description copied from interface: ChannelBuffer

Locates the first occurrence of the specified value in this buffer. The search takes place from the current readerIndex (inclusive) to the current writerIndex (exclusive).

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the current readerIndex and the first occurrence if found. -1 otherwise.

bytesBefore

public int bytesBefore(ChannelBufferIndexFinder indexFinder)

Description copied from interface: ChannelBuffer

Locates the first place where the specified indexFinder returns true. The search takes place from the current readerIndex (inclusive) to the current writerIndex.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the current readerIndex and the first place where the indexFinder returned true. -1 if the indexFinder did not return true at all.

bytesBefore

public int bytesBefore(int length,
                       byte value)

Description copied from interface: ChannelBuffer

Locates the first occurrence of the specified value in this buffer. The search starts from the current readerIndex (inclusive) and lasts for the specified length.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the current readerIndex and the first occurrence if found. -1 otherwise.

bytesBefore

public int bytesBefore(int length,
                       ChannelBufferIndexFinder indexFinder)

Description copied from interface: ChannelBuffer

Locates the first place where the specified indexFinder returns true. The search starts the current readerIndex (inclusive) and lasts for the specified length.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the current readerIndex and the first place where the indexFinder returned true. -1 if the indexFinder did not return true at all.

bytesBefore

public int bytesBefore(int index,
                       int length,
                       byte value)

Description copied from interface: ChannelBuffer

Locates the first occurrence of the specified value in this buffer. The search starts from the specified index (inclusive) and lasts for the specified length.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the specified index and the first occurrence if found. -1 otherwise.

bytesBefore

public int bytesBefore(int index,
                       int length,
                       ChannelBufferIndexFinder indexFinder)

Description copied from interface: ChannelBuffer

Locates the first place where the specified indexFinder returns true. The search starts the specified index (inclusive) and lasts for the specified length.

This method does not modify readerIndex or writerIndex of this buffer.

Specified by:: bytesBefore in interface ChannelBuffer

Returns:: the number of bytes between the specified index and the first place where the indexFinder returned true. -1 if the indexFinder did not return true at all.

hashCode

public int hashCode()

Description copied from interface: ChannelBuffer

Returns a hash code which was calculated from the content of this buffer. If there's a byte array which is equal to this array, both arrays should return the same value.

Specified by:: hashCode in interface ChannelBuffer
Overrides:: hashCode in class Object

equals

public boolean equals(Object o)

Description copied from interface: ChannelBuffer

Determines if the content of the specified buffer is identical to the content of this array. 'Identical' here means:

the size of the contents of the two buffers are same and
every single byte of the content of the two buffers are same.

Please note that it does not compare ChannelBuffer.readerIndex() nor ChannelBuffer.writerIndex(). This method also returns false for null and an object which is not an instance of ChannelBuffer type.

Specified by:: equals in interface ChannelBuffer
Overrides:: equals in class Object

compareTo

public int compareTo(ChannelBuffer that)

Description copied from interface: ChannelBuffer

Compares the content of the specified buffer to the content of this buffer. Comparison is performed in the same manner with the string comparison functions of various languages such as strcmp, memcmp and String.compareTo(String).

Specified by:: compareTo in interface Comparable<ChannelBuffer>
Specified by:: compareTo in interface ChannelBuffer

toString

public String toString()

Description copied from interface: ChannelBuffer

Returns the string representation of this buffer. This method does not necessarily return the whole content of the buffer but returns the values of the key properties such as ChannelBuffer.readerIndex(), ChannelBuffer.writerIndex() and ChannelBuffer.capacity().

Specified by:: toString in interface ChannelBuffer
Overrides:: toString in class Object

checkReadableBytes

protected void checkReadableBytes(int minimumReadableBytes)

Throws an IndexOutOfBoundsException if the current readable bytes of this buffer is less than the specified value.

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org.jboss.netty.buffer Class AbstractChannelBuffer

AbstractChannelBuffer

readerIndex

readerIndex

writerIndex

writerIndex

setIndex

clear

readable

writable

readableBytes

writableBytes

markReaderIndex

resetReaderIndex

markWriterIndex

resetWriterIndex

discardReadBytes

ensureWritableBytes

getUnsignedByte

getUnsignedShort

getMedium

getUnsignedInt

getChar

getFloat

getDouble

getBytes

getBytes

getBytes

setChar

setFloat

setDouble

setBytes

setBytes

setBytes

setZero

readByte

readUnsignedByte

readShort

readUnsignedShort

readMedium

readUnsignedMedium

readInt

readUnsignedInt

readLong

readChar

readFloat

readDouble

readBytes

readBytes

readSlice

readSlice

readBytes

readBytes

readBytes

readBytes

readBytes

readBytes

readBytes

readBytes

skipBytes

skipBytes

writeByte

writeShort

writeMedium

writeInt

writeLong

writeChar

writeFloat

writeDouble

writeBytes

writeBytes

writeBytes

writeBytes

writeBytes

writeBytes

writeBytes

writeBytes

writeZero

copy

slice

org.jboss.netty.buffer
Class AbstractChannelBuffer