DynamicChannelBuffer (Netty API Reference (3.10.6.Final))

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

All Implemented Interfaces:

Comparable<ChannelBuffer>, ChannelBuffer
```
public class DynamicChannelBuffer
extends AbstractChannelBuffer
```
A dynamic capacity buffer which increases its capacity as needed. It is recommended to use ChannelBuffers.dynamicBuffer(int) instead of calling the constructor explicitly.

Constructor Summary

Constructors
Constructor and Description
`DynamicChannelBuffer(ByteOrder endianness, int estimatedLength)`
`DynamicChannelBuffer(ByteOrder endianness, int estimatedLength, ChannelBufferFactory factory)`
`DynamicChannelBuffer(int estimatedLength)`

Method Summary

Methods
Modifier and Type	Method and Description
`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.
`void`	`ensureWritableBytes(int minWritableBytes)` Makes sure the number of the writable bytes is equal to or greater than the specified value.
`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.
`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, 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, 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`	`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.
`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 org.jboss.netty.buffer.AbstractChannelBuffer
bytesBefore, bytesBefore, bytesBefore, bytesBefore, bytesBefore, bytesBefore, checkReadableBytes, clear, compareTo, copy, discardReadBytes, equals, getBytes, getBytes, getBytes, getChar, getDouble, getFloat, getMedium, getUnsignedByte, getUnsignedInt, getUnsignedShort, hashCode, indexOf, indexOf, markReaderIndex, markWriterIndex, readable, readableBytes, readByte, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readBytes, readChar, readDouble, readerIndex, readerIndex, readFloat, readInt, readLong, readMedium, readShort, readSlice, readUnsignedByte, readUnsignedInt, readUnsignedMedium, readUnsignedShort, resetReaderIndex, resetWriterIndex, setBytes, setBytes, setBytes, setChar, setDouble, setFloat, setIndex, setZero, skipBytes, slice, toByteBuffer, toByteBuffers, toByteBuffers, toString, toString, toString, writable, writableBytes, writeBytes, writeBytes, writeBytes, writeChar, writeDouble, writeFloat, writerIndex, writerIndex

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

- Constructor Detail
  - DynamicChannelBuffer
```
public DynamicChannelBuffer(int estimatedLength)
```
  - DynamicChannelBuffer
```
public DynamicChannelBuffer(ByteOrder endianness,
                    int estimatedLength)
```
  - DynamicChannelBuffer
```
public DynamicChannelBuffer(ByteOrder endianness,
                    int estimatedLength,
                    ChannelBufferFactory factory)
```
- Method Detail
  - ensureWritableBytes
```
public void ensureWritableBytes(int minWritableBytes)
```
    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
    
    Overrides:
    
    ensureWritableBytes in class AbstractChannelBuffer
    
    Parameters:
    minWritableBytes - the expected minimum number of writable bytes
  - factory
```
public ChannelBufferFactory factory()
```
    Description copied from interface: ChannelBuffer
    
    Returns the factory which creates a ChannelBuffer whose type and default ByteOrder are same with this buffer.
  - order
```
public ByteOrder order()
```
    Description copied from interface: ChannelBuffer
    
    Returns the endianness of this buffer.
  - isDirect
```
public boolean isDirect()
```
    Description copied from interface: ChannelBuffer
    
    Returns true if and only if this buffer is backed by an NIO direct buffer.
  - capacity
```
public int capacity()
```
    Description copied from interface: ChannelBuffer
    
    Returns the number of bytes (octets) this buffer can contain.
  - hasArray
```
public boolean hasArray()
```
    Description copied from interface: ChannelBuffer
    
    Returns true 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().
  - array
```
public byte[] array()
```
    Description copied from interface: ChannelBuffer
    
    Returns the backing byte array of this buffer.
  - arrayOffset
```
public int arrayOffset()
```
    Description copied from interface: ChannelBuffer
    
    Returns the offset of the first byte within the backing byte array of this buffer.
  - getByte
```
public byte getByte(int index)
```
    Description copied from interface: ChannelBuffer
    
    Gets a byte at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - getShort
```
public short getShort(int index)
```
    Description copied from interface: ChannelBuffer
    
    Gets a 16-bit short integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - getUnsignedMedium
```
public int getUnsignedMedium(int index)
```
    Description copied from interface: ChannelBuffer
    
    Gets an unsigned 24-bit medium integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - getInt
```
public int getInt(int index)
```
    Description copied from interface: ChannelBuffer
    
    Gets a 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - getLong
```
public long getLong(int index)
```
    Description copied from interface: ChannelBuffer
    
    Gets a 64-bit long integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - getBytes
```
public void getBytes(int index,
            byte[] dst,
            int dstIndex,
            int length)
```
    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.
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - getBytes
```
public void getBytes(int index,
            ChannelBuffer dst,
            int dstIndex,
            int length)
```
    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 both the source (i.e. this) and the destination.
    
    dstIndex - the first index of the destination
    length - the number of bytes to transfer
  - getBytes
```
public void getBytes(int index,
            ByteBuffer dst)
```
    Description copied from interface: ChannelBuffer
    
    Transfers this buffer's data to the specified destination starting at the specified absolute index 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
```
public int getBytes(int index,
           GatheringByteChannel out,
           int length)
             throws IOException
```
    Description copied from interface: ChannelBuffer
    
    Transfers this buffer's data to the specified channel starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    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
  - getBytes
```
public void getBytes(int index,
            OutputStream out,
            int length)
              throws IOException
```
    Description copied from interface: ChannelBuffer
    
    Transfers this buffer's data to the specified stream starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    length - the number of bytes to transfer
    
    Throws:
    
    IOException - if the specified stream threw an exception during I/O
  - setByte
```
public void setByte(int index,
           int value)
```
    Description copied from interface: ChannelBuffer
    
    Sets the specified byte at the specified absolute index 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.
  - setShort
```
public void setShort(int index,
            int value)
```
    Description copied from interface: ChannelBuffer
    
    Sets the specified 16-bit short integer 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.
  - setMedium
```
public void setMedium(int index,
             int value)
```
    Description copied from interface: ChannelBuffer
    
    Sets the specified 24-bit medium integer at the specified absolute index 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.
  - setInt
```
public void setInt(int index,
          int value)
```
    Description copied from interface: ChannelBuffer
    
    Sets the specified 32-bit integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - setLong
```
public void setLong(int index,
           long value)
```
    Description copied from interface: ChannelBuffer
    
    Sets the specified 64-bit long integer at the specified absolute index in this buffer. This method does not modify readerIndex or writerIndex of this buffer.
  - setBytes
```
public void setBytes(int index,
            byte[] src,
            int srcIndex,
            int length)
```
    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.
  - setBytes
```
public void setBytes(int index,
            ChannelBuffer src,
            int srcIndex,
            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 does not modify readerIndex or writerIndex of both the source (i.e. this) and the destination.
    
    srcIndex - the first index of the source
    length - the number of bytes to transfer
  - setBytes
```
public void setBytes(int index,
            ByteBuffer 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's position reaches its limit. This method does not modify readerIndex or writerIndex of this buffer.
  - setBytes
```
public int setBytes(int index,
           InputStream in,
           int length)
             throws IOException
```
    Description copied from interface: ChannelBuffer
    
    Transfers the content of the specified source stream to this buffer starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    length - the number of bytes to transfer
    
    Returns:
    the actual number of bytes read in from the specified channel. -1 if the specified channel is closed.
    
    Throws:
    
    IOException - if the specified stream threw an exception during I/O
  - setBytes
```
public int setBytes(int index,
           ScatteringByteChannel in,
           int length)
             throws IOException
```
    Description copied from interface: ChannelBuffer
    
    Transfers the content of the specified source channel to this buffer starting at the specified absolute index. This method does not modify readerIndex or writerIndex of this buffer.
    
    length - the maximum number of bytes to transfer
    
    Returns:
    the actual number of bytes read in from the specified channel. -1 if the specified channel is closed.
    
    Throws:
    
    IOException - if the specified channel threw an exception during I/O
  - 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
    
    Overrides:
    
    writeByte in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeShort in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeMedium in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeInt in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeLong in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeBytes in class AbstractChannelBuffer
    
    srcIndex - the first index of the source
    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
    
    Overrides:
    
    writeBytes in class AbstractChannelBuffer
    
    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
    
    Overrides:
    
    writeBytes in class AbstractChannelBuffer
  - 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
    
    Overrides:
    
    writeBytes in class AbstractChannelBuffer
    
    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
    
    Overrides:
    
    writeBytes in class AbstractChannelBuffer
    
    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
    
    Overrides:
    
    writeZero in class AbstractChannelBuffer
    
    Parameters:
    length - the number of NULs to write to the buffer
  - duplicate
```
public ChannelBuffer duplicate()
```
    Description copied from interface: ChannelBuffer
    
    Returns a buffer which shares the whole region of this buffer. 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(0, buf.capacity()). This method does not modify readerIndex or writerIndex of this buffer.
  - copy
```
public ChannelBuffer copy(int index,
                 int length)
```
    Description copied from interface: ChannelBuffer
    
    Returns a copy of this buffer's sub-region. Modifying the content of the returned buffer or this buffer does not affect each other at all. This method does not modify readerIndex or writerIndex of this buffer.
  - slice
```
public ChannelBuffer slice(int index,
                  int length)
```
    Description copied from interface: ChannelBuffer
    
    Returns a slice of this buffer's sub-region. Modifying the content of the returned buffer or this buffer affects each other's content while they maintain separate indexes and marks. This method does not modify readerIndex or writerIndex of this buffer.
  - toByteBuffer
```
public ByteBuffer toByteBuffer(int index,
                      int length)
```
    Description copied from interface: ChannelBuffer
    
    Converts this buffer's sub-region 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 does not modify readerIndex or writerIndex of this buffer.

Class DynamicChannelBuffer

Constructor Summary

Method Summary

Methods inherited from class org.jboss.netty.buffer.AbstractChannelBuffer

Methods inherited from class java.lang.Object

Constructor Detail

DynamicChannelBuffer

DynamicChannelBuffer

DynamicChannelBuffer

Method Detail

ensureWritableBytes

factory

order

isDirect

capacity

hasArray

array

arrayOffset

getByte

getShort

getUnsignedMedium

getInt

getLong

getBytes

getBytes

getBytes

getBytes

getBytes

setByte

setShort

setMedium

setInt

setLong

setBytes

setBytes

setBytes

setBytes

setBytes

writeByte

writeShort

writeMedium

writeInt

writeLong

writeBytes

writeBytes

writeBytes

writeBytes

writeBytes

writeZero

duplicate

copy

slice

toByteBuffer