org.apache.http.impl.nio.reactor

Class SessionInputBufferImpl

java.lang.Object

org.apache.http.nio.util.ExpandableBuffer

org.apache.http.impl.nio.reactor.SessionInputBufferImpl

All Implemented Interfaces:

SessionInputBuffer, BufferInfo

@NotThreadSafe
public class SessionInputBufferImpl
extends ExpandableBuffer
implements SessionInputBuffer

Default implementation of SessionInputBuffer based on the ExpandableBuffer class.

The following parameters can be used to customize the behavior of this class:

• CoreProtocolPNames.HTTP_ELEMENT_CHARSET

Since:

4.0

Field Summary

Fields inherited from class org.apache.http.nio.util.ExpandableBuffer

buffer, INPUT_MODE, OUTPUT_MODE

Constructor Summary

Constructors

Constructor and Description
SessionInputBufferImpl(int buffersize, int linebuffersize, ByteBufferAllocator allocator, HttpParams params)
SessionInputBufferImpl(int buffersize, int linebuffersize, HttpParams params)

Method Summary

Methods

Modifier and Type	Method and Description
int	fill(ReadableByteChannel channel) Makes an attempt to fill the buffer with data from the given ReadableByteChannel.
int	read() Reads one byte from the buffer.
int	read(ByteBuffer dst) Reads a sequence of bytes from this buffer into the destination buffer.
int	read(ByteBuffer dst, int maxLen) Reads a sequence of bytes from this buffer into the destination buffer, up to the given maximum limit.
int	read(WritableByteChannel dst) Reads a sequence of bytes from this buffer into the destination channel.
int	read(WritableByteChannel dst, int maxLen) Reads a sequence of bytes from this buffer into the destination channel, up to the given maximum limit.
String	readLine(boolean endOfStream) Attempts to transfer a complete line of characters up to a line delimiter from this buffer to a newly created string.
boolean	readLine(CharArrayBuffer linebuffer, boolean endOfStream) Attempts to transfer a complete line of characters up to a line delimiter from this buffer to the destination buffer.

Methods inherited from class org.apache.http.nio.util.ExpandableBuffer

available, capacity, clear, ensureCapacity, expand, getMode, hasData, length, setInputMode, setOutputMode, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.http.nio.reactor.SessionInputBuffer

hasData, length

Constructor Detail

SessionInputBufferImpl

public SessionInputBufferImpl(int buffersize,
                      int linebuffersize,
                      ByteBufferAllocator allocator,
                      HttpParams params)

SessionInputBufferImpl

public SessionInputBufferImpl(int buffersize,
                      int linebuffersize,
                      HttpParams params)

Method Detail

fill

public int fill(ReadableByteChannel channel)
         throws IOException

Description copied from interface: SessionInputBuffer

Makes an attempt to fill the buffer with data from the given ReadableByteChannel.

Specified by:

fill in interface SessionInputBuffer

Parameters:

channel - the source channel

Returns:

The number of bytes read, possibly zero, or -1 if the channel has reached end-of-stream.

Throws:

IOException - in case of an I/O error.

read

public int read()

Description copied from interface: SessionInputBuffer

Reads one byte from the buffer. If the buffer is empty this method can throw a runtime exception. The exact type of runtime exception thrown by this method depends on implementation.

Specified by:

read in interface SessionInputBuffer

Returns:

one byte

read

public int read(ByteBuffer dst,
       int maxLen)

Description copied from interface: SessionInputBuffer

Reads a sequence of bytes from this buffer into the destination buffer, up to the given maximum limit. The exact number of bytes transferred depends on availability of data in this buffer and capacity of the destination buffer, but cannot be more than maxLen value.

Specified by:

read in interface SessionInputBuffer

Parameters:

dst - the destination buffer.

maxLen - the maximum number of bytes to be read.

Returns:

The number of bytes read, possibly zero.

read

public int read(ByteBuffer dst)

Description copied from interface: SessionInputBuffer

Reads a sequence of bytes from this buffer into the destination buffer. The exact number of bytes transferred depends on availability of data in this buffer and capacity of the destination buffer.

Specified by:

read in interface SessionInputBuffer

Parameters:

dst - the destination buffer.

Returns:

The number of bytes read, possibly zero.

read

public int read(WritableByteChannel dst,
       int maxLen)
         throws IOException

Description copied from interface: SessionInputBuffer

Reads a sequence of bytes from this buffer into the destination channel, up to the given maximum limit. The exact number of bytes transferred depends on availability of data in this buffer, but cannot be more than maxLen value.

Specified by:

read in interface SessionInputBuffer

Parameters:

dst - the destination channel.

maxLen - the maximum number of bytes to be read.

Returns:

The number of bytes read, possibly zero.

Throws:

IOException - in case of an I/O error.

read

public int read(WritableByteChannel dst)
         throws IOException

Description copied from interface: SessionInputBuffer

Reads a sequence of bytes from this buffer into the destination channel. The exact number of bytes transferred depends on availability of data in this buffer.

Specified by:

read in interface SessionInputBuffer

Parameters:

dst - the destination channel.

Returns:

The number of bytes read, possibly zero.

Throws:

IOException - in case of an I/O error.

readLine

public boolean readLine(CharArrayBuffer linebuffer,
               boolean endOfStream)
                 throws CharacterCodingException

Description copied from interface: SessionInputBuffer

Attempts to transfer a complete line of characters up to a line delimiter from this buffer to the destination buffer. If a complete line is available in the buffer, the sequence of chars is transferred to the destination buffer the method returns true. The line delimiter itself is discarded. If a complete line is not available in the buffer, this method returns false without transferring anything to the destination buffer. If endOfStream parameter is set to true this method assumes the end of stream has been reached and the content currently stored in the buffer should be treated as a complete line.

The choice of a char encoding and line delimiter sequence is up to the specific implementations of this interface.

Specified by:

readLine in interface SessionInputBuffer

Parameters:

linebuffer - the destination buffer.

Returns:

true if a sequence of chars representing a complete line has been transferred to the destination buffer, false otherwise.

Throws:

CharacterCodingException - in case a character encoding or decoding error occurs.

readLine

public String readLine(boolean endOfStream)
                throws CharacterCodingException

Description copied from interface: SessionInputBuffer

Attempts to transfer a complete line of characters up to a line delimiter from this buffer to a newly created string. If a complete line is available in the buffer, the sequence of chars is transferred to a newly created string. The line delimiter itself is discarded. If a complete line is not available in the buffer, this method returns null. If endOfStream parameter is set to true this method assumes the end of stream has been reached and the content currently stored in the buffer should be treated as a complete line.

The choice of a char encoding and line delimiter sequence is up to the specific implementations of this interface.

Specified by:

readLine in interface SessionInputBuffer

Returns:

a string representing a complete line, if available. null otherwise.

Throws:

CharacterCodingException - in case a character encoding or decoding error occurs.