ByteBufferWrapper (grizzly-framework 2.2.1 API)

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org.glassfish.grizzly.memory
Class ByteBufferWrapper

java.lang.Object
  org.glassfish.grizzly.memory.ByteBufferWrapper

All Implemented Interfaces:: java.lang.Comparable<Buffer>, WritableMessage, Buffer

Direct Known Subclasses:: ByteBufferManager.SmallByteBufferWrapper

public class ByteBufferWrapper
extends java.lang.Object
implements Buffer
extends java.lang.Object
implements Buffer

Buffer implementation, which uses the ByteBuffer underneath.

Author:: Ken Cavanaugh, John Vieten, Alexey Stashok
See Also:: Buffer, MemoryManager, ByteBuffer

Field Summary
`protected boolean`	`allowBufferDispose`
`static boolean`	`DEBUG_MODE`
`protected java.lang.Exception`	`disposeStackTrace`
`protected java.nio.ByteBuffer`	`visible`

Constructor Summary
`protected`	`ByteBufferWrapper()`
	`ByteBufferWrapper(java.nio.ByteBuffer underlyingByteBuffer)`

Method Summary
`boolean`	`allowBufferDispose()`
`void`	`allowBufferDispose(boolean allowBufferDispose)`
`ByteBufferWrapper`	`asReadOnlyBuffer()` Creates a new, read-only `Buffer` that shares this buffer's content.
`int`	`capacity()` Returns this buffer's capacity.
`ByteBufferWrapper`	`clear()` Clears this buffer.
`ByteBufferWrapper`	`compact()` Compacts this buffer (optional operation).
`int`	`compareTo(Buffer o)`
`void`	`dispose()` Notify the allocator that the space for this `Buffer` is no longer needed.
`ByteBufferWrapper`	`duplicate()` Creates a new `Buffer` that shares this buffer's content.
`boolean`	`equals(java.lang.Object obj)`
`ByteBufferWrapper`	`flip()` Flips this buffer.
`byte`	`get()` Relative get method.
`ByteBufferWrapper`	`get(byte[] dst)` Relative bulk get method.
`ByteBufferWrapper`	`get(byte[] dst, int offset, int length)` Relative bulk get method.
`Buffer`	`get(java.nio.ByteBuffer dst)` Relative bulk get method.
`Buffer`	`get(java.nio.ByteBuffer dst, int position, int length)` Relative bulk get method.
`byte`	`get(int index)` Absolute get method.
`char`	`getChar()` Relative get method for reading a char value.
`char`	`getChar(int index)` Absolute get method for reading a char value.
`double`	`getDouble()` Relative get method for reading a double value.
`double`	`getDouble(int index)` Absolute get method for reading a double value.
`float`	`getFloat()` Relative get method for reading a float value.
`float`	`getFloat(int index)` Absolute get method for reading a float value.
`int`	`getInt()` Relative get method for reading an int value.
`int`	`getInt(int index)` Absolute get method for reading an int value.
`long`	`getLong()` Relative get method for reading a long value.
`long`	`getLong(int index)` Absolute get method for reading a long value.
`short`	`getShort()` Relative get method for reading a short value.
`short`	`getShort(int index)` Absolute get method for reading a short value.
`int`	`hashCode()`
`boolean`	`hasRemaining()` Tells whether there are any elements between the current position and the limit.
`boolean`	`isComposite()`
`boolean`	`isDirect()` Tells whether or not this buffer is direct.
`boolean`	`isExternal()` Returns `true` if the message represents an external resource (for example `FileTransfer`), which is not loaded in memory.
`boolean`	`isReadOnly()` Tells whether or not this buffer is read-only.
`int`	`limit()` Returns this buffer's limit.
`ByteBufferWrapper`	`limit(int newLimit)` Sets this buffer's limit.
`ByteBufferWrapper`	`mark()` Sets this buffer's mark at its position.
`java.nio.ByteOrder`	`order()` Retrieves this buffer's byte order.
`ByteBufferWrapper`	`order(java.nio.ByteOrder bo)` Modifies this buffer's byte order.
`int`	`position()` Returns this buffer's position.
`ByteBufferWrapper`	`position(int newPosition)` Sets this buffer's position.
`protected void`	`prepareDispose()`
`ByteBufferWrapper`	`prepend(Buffer header)` Prepend data from header.position() to header.limit() to the current buffer.
`ByteBufferWrapper`	`put(Buffer src)` Relative bulk put method (optional operation).
`ByteBufferWrapper`	`put(Buffer src, int position, int length)` Relative bulk put method (optional operation).
`ByteBufferWrapper`	`put(byte b)` Relative put method (optional operation).
`ByteBufferWrapper`	`put(byte[] src)` Relative bulk put method (optional operation).
`ByteBufferWrapper`	`put(byte[] src, int offset, int length)` Relative bulk put method (optional operation).
`Buffer`	`put(java.nio.ByteBuffer src)` Relative bulk put method (optional operation).
`Buffer`	`put(java.nio.ByteBuffer src, int position, int length)` Relative bulk put method (optional operation).
`ByteBufferWrapper`	`put(int index, byte b)` Absolute put method (optional operation).
`Buffer`	`put8BitString(java.lang.String s)` Relative bulk put method (optional operation).
`ByteBufferWrapper`	`putChar(char value)` Relative put method for writing a char value (optional operation).
`ByteBufferWrapper`	`putChar(int index, char value)` Absolute put method for writing a char value (optional operation).
`ByteBufferWrapper`	`putDouble(double value)` Relative put method for writing a double value (optional operation).
`ByteBufferWrapper`	`putDouble(int index, double value)` Absolute put method for writing a double value (optional operation).
`ByteBufferWrapper`	`putFloat(float value)` Relative put method for writing a float value (optional operation).
`ByteBufferWrapper`	`putFloat(int index, float value)` Absolute put method for writing a float value (optional operation).
`ByteBufferWrapper`	`putInt(int value)` Relative put method for writing an int value (optional operation).
`ByteBufferWrapper`	`putInt(int index, int value)` Absolute put method for writing an int value (optional operation).
`ByteBufferWrapper`	`putLong(int index, long value)` Absolute put method for writing a long value (optional operation).
`ByteBufferWrapper`	`putLong(long value)` Relative put method for writing a long value (optional operation).
`ByteBufferWrapper`	`putShort(int index, short value)` Absolute put method for writing a short value (optional operation).
`ByteBufferWrapper`	`putShort(short value)` Relative put method for writing a short value (optional operation).
`boolean`	`release()` Perform message specific actions to release resources held by the entity backing this `WritableMessage`.
`int`	`remaining()` Returns the number of elements between the current position and the limit.
`ByteBufferWrapper`	`reset()` Resets this buffer's position to the previously-marked position.
`ByteBufferWrapper`	`rewind()` Rewinds this buffer.
`void`	`shrink()` Disposes the buffer part, outside [position, limit] interval if possible.
`ByteBufferWrapper`	`slice()` Creates a new `Buffer` whose content is a shared subsequence of this buffer's content.
`ByteBufferWrapper`	`slice(int position, int limit)` Creates a new `Buffer` whose content is a shared subsequence of this buffer's content.
`Buffer`	`split(int splitPosition)` Split up the buffer into two parts: [0..splitPosition) and [splitPosition, capacity).
`BufferArray`	`toBufferArray()`
`BufferArray`	`toBufferArray(BufferArray array)`
`BufferArray`	`toBufferArray(BufferArray array, int position, int limit)`
`BufferArray`	`toBufferArray(int position, int limit)`
`java.nio.ByteBuffer`	`toByteBuffer()`
`java.nio.ByteBuffer`	`toByteBuffer(int position, int limit)`
`ByteBufferArray`	`toByteBufferArray()`
`ByteBufferArray`	`toByteBufferArray(ByteBufferArray array)`
`ByteBufferArray`	`toByteBufferArray(ByteBufferArray array, int position, int limit)`
`ByteBufferArray`	`toByteBufferArray(int position, int limit)`
`java.lang.String`	`toString()`
`java.lang.String`	`toStringContent()` Returns `Buffer` content as `String`, using default `Charset`
`java.lang.String`	`toStringContent(java.nio.charset.Charset charset)` Returns `Buffer` content as `String`
`java.lang.String`	`toStringContent(java.nio.charset.Charset charset, int position, int limit)` Returns `Buffer`'s chunk content as `String`
`void`	`trim()` Trim the buffer by reducing capacity to position, if possible.
`boolean`	`tryDispose()` Try to dispose `Buffer` if it's allowed.
`java.nio.ByteBuffer`	`underlying()` Return the underlying buffer
`protected ByteBufferWrapper`	`wrapByteBuffer(java.nio.ByteBuffer byteBuffer)`

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

Field Detail

DEBUG_MODE

public static volatile boolean DEBUG_MODE

visible

protected java.nio.ByteBuffer visible

allowBufferDispose

protected boolean allowBufferDispose

disposeStackTrace

protected java.lang.Exception disposeStackTrace

Constructor Detail

ByteBufferWrapper

protected ByteBufferWrapper()

ByteBufferWrapper

public ByteBufferWrapper(java.nio.ByteBuffer underlyingByteBuffer)

Method Detail

isComposite

public final boolean isComposite()

Specified by:: isComposite in interface Buffer

prepend

public ByteBufferWrapper prepend(Buffer header)

Description copied from interface: Buffer

Prepend data from header.position() to header.limit() to the current buffer. This will change the value returned by buffer()!

Specified by:: prepend in interface Buffer

trim

public void trim()

Description copied from interface: Buffer

Trim the buffer by reducing capacity to position, if possible. May return without changing capacity. Also resets the position to 0, like reset().

Specified by:: trim in interface Buffer

shrink

public void shrink()

Description copied from interface: Buffer

Disposes the buffer part, outside [position, limit] interval if possible. May return without changing capacity. After shrink is called, position/limit/capacity values may have different values, than before, but still point to the same Buffer elements.

Specified by:: shrink in interface Buffer

isDirect

public boolean isDirect()

Description copied from interface: Buffer

Tells whether or not this buffer is direct.

Specified by:: isDirect in interface Buffer

Returns:: true if, and only if, this buffer is direct

allowBufferDispose

public final boolean allowBufferDispose()

Specified by:: allowBufferDispose in interface Buffer

allowBufferDispose

public final void allowBufferDispose(boolean allowBufferDispose)

Specified by:: allowBufferDispose in interface Buffer

tryDispose

public final boolean tryDispose()

Description copied from interface: Buffer

Try to dispose Buffer if it's allowed.

Specified by:: tryDispose in interface Buffer

dispose

public void dispose()

Description copied from interface: Buffer

Notify the allocator that the space for this Buffer is no longer needed. All calls to methods on a Buffer will fail after a call to dispose().

Specified by:: dispose in interface Buffer

prepareDispose

protected final void prepareDispose()

underlying

public java.nio.ByteBuffer underlying()

Description copied from interface: Buffer

Return the underlying buffer

Specified by:: underlying in interface Buffer

Returns:: the underlying buffer

capacity

public final int capacity()

Description copied from interface: Buffer

Returns this buffer's capacity.

Specified by:: capacity in interface Buffer

Returns:: The capacity of this buffer

position

public final int position()

Description copied from interface: Buffer

Returns this buffer's position.

Specified by:: position in interface Buffer

Returns:: The position of this buffer

position

public final ByteBufferWrapper position(int newPosition)

Description copied from interface: Buffer

Sets this buffer's position. If the mark is defined and larger than the new position then it is discarded.

Specified by:: position in interface Buffer

Parameters:: newPosition - The new position value; must be non-negative and no larger than the current limit
Returns:: This buffer

limit

public final int limit()

Description copied from interface: Buffer

Returns this buffer's limit.

Specified by:: limit in interface Buffer

Returns:: The limit of this buffer

limit

public final ByteBufferWrapper limit(int newLimit)

Description copied from interface: Buffer

Sets this buffer's limit. If the position is larger than the new limit then it is set to the new limit. If the mark is defined and larger than the new limit then it is discarded.

Specified by:: limit in interface Buffer

Parameters:: newLimit - The new limit value; must be non-negative and no larger than this buffer's capacity
Returns:: This buffer

mark

public final ByteBufferWrapper mark()

Description copied from interface: Buffer

Sets this buffer's mark at its position.

Specified by:: mark in interface Buffer

Returns:: This buffer

reset

public final ByteBufferWrapper reset()

Description copied from interface: Buffer

Resets this buffer's position to the previously-marked position.

Invoking this method neither changes nor discards the mark's value.

Specified by:: reset in interface Buffer

Returns:: This buffer

clear

public final ByteBufferWrapper clear()

Description copied from interface: Buffer

Clears this buffer. The position is set to zero, the limit is set to the capacity, and the mark is discarded.

Invoke this method before using a sequence of channel-read or put operations to fill this buffer. For example:

 buf.clear();     // Prepare buffer for reading
 in.read(buf);    // Read data

This method does not actually erase the data in the buffer, but it is named as if it did because it will most often be used in situations in which that might as well be the case.

Specified by:: clear in interface Buffer

Returns:: This buffer

flip

public final ByteBufferWrapper flip()

Description copied from interface: Buffer

Flips this buffer. The limit is set to the current position and then the position is set to zero. If the mark is defined then it is discarded.

After a sequence of channel-read or put operations, invoke this method to prepare for a sequence of channel-write or relative get operations. For example:

 buf.put(magic);    // Prepend header
 in.read(buf);      // Read data into rest of buffer
 buf.flip();        // Flip buffer
 out.write(buf);    // Write header + data to channel

This method is often used in conjunction with the compact method when transferring data from one place to another.

Specified by:: flip in interface Buffer

Returns:: This buffer

rewind

public final ByteBufferWrapper rewind()

Description copied from interface: Buffer

Rewinds this buffer. The position is set to zero and the mark is discarded.

Invoke this method before a sequence of channel-write or get operations, assuming that the limit has already been set appropriately. For example:

 out.write(buf);    // Write remaining data
 buf.rewind();      // Rewind buffer
 buf.get(array);    // Copy data into array

Specified by:: rewind in interface Buffer

Returns:: This buffer

remaining

public final int remaining()

Description copied from interface: Buffer

Returns the number of elements between the current position and the limit.

Specified by:: remaining in interface WritableMessage
Specified by:: remaining in interface Buffer

Returns:: The number of elements remaining in this buffer

hasRemaining

public final boolean hasRemaining()

Description copied from interface: Buffer

Tells whether there are any elements between the current position and the limit.

Specified by:: hasRemaining in interface WritableMessage
Specified by:: hasRemaining in interface Buffer

Returns:: true if, and only if, there is at least one element remaining in this buffer

isReadOnly

public boolean isReadOnly()

Description copied from interface: Buffer

Tells whether or not this buffer is read-only.

Specified by:: isReadOnly in interface Buffer

Returns:: true if, and only if, this buffer is read-only

split

public Buffer split(int splitPosition)

Description copied from interface: Buffer

Split up the buffer into two parts: [0..splitPosition) and [splitPosition, capacity). This Buffer will represent the first part: [0..splitPosition) and returned Buffer will represent the second part: [splitPosition, capacity).

Specified by:: split in interface Buffer

Parameters:: splitPosition - position of split.
Returns:: the Buffer, which represents split part [splitPosition, capacity)

slice

public ByteBufferWrapper slice()

Description copied from interface: Buffer

Creates a new Buffer whose content is a shared subsequence of this buffer's content.

The content of the new buffer will start at this buffer's current position. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.

The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.

Specified by:: slice in interface Buffer

Returns:: The new Buffer

slice

public ByteBufferWrapper slice(int position,
                               int limit)

Description copied from interface: Buffer

Creates a new Buffer whose content is a shared subsequence of this buffer's content.

The content of the new buffer will start at passed position and end at passed limit. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffer's position, limit, and mark values will be independent.

Specified by:: slice in interface Buffer

Returns:: The new Buffer

duplicate

public ByteBufferWrapper duplicate()

Description copied from interface: Buffer

Creates a new Buffer that shares this buffer's content.

The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffer's position, limit, and mark values will be independent.

The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.

Specified by:: duplicate in interface Buffer

Returns:: The new Buffer

asReadOnlyBuffer

public ByteBufferWrapper asReadOnlyBuffer()

Description copied from interface: Buffer

Creates a new, read-only Buffer that shares this buffer's content.

The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer; the new buffer itself, however, will be read-only and will not allow the shared content to be modified. The two buffer's position, limit, and mark values will be independent.

The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer.

If this buffer is itself read-only then this method behaves in exactly the same way as the duplicate method.

Specified by:: asReadOnlyBuffer in interface Buffer

Returns:: The new, read-only Buffer

get

public byte get()

Description copied from interface: Buffer

Relative get method. Reads the byte at this buffer's current position, and then increments the position.

Specified by:: get in interface Buffer

Returns:: The byte at the buffer's current position

get

public byte get(int index)

Description copied from interface: Buffer

Absolute get method. Reads the byte at the given index.

Specified by:: get in interface Buffer

Parameters:: index - The index from which the byte will be read
Returns:: The byte at the given index

put

public ByteBufferWrapper put(byte b)

Description copied from interface: Buffer

Relative put method (optional operation).

Writes the given byte into this buffer at the current position, and then increments the position.

Specified by:: put in interface Buffer

Parameters:: b - The byte to be written
Returns:: This buffer

put

public ByteBufferWrapper put(int index,
                             byte b)

Description copied from interface: Buffer

Absolute put method (optional operation).

Writes the given byte into this buffer at the given index.

Specified by:: put in interface Buffer

Parameters:: index - The index at which the byte will be written; b - The byte value to be written
Returns:: This buffer

get

public ByteBufferWrapper get(byte[] dst)

Description copied from interface: Buffer

Relative bulk get method.

This method transfers bytes from this buffer into the given destination array. An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocation

     src.get(a, 0, a.length)

Specified by:: get in interface Buffer

Returns:: This buffer

get

public ByteBufferWrapper get(byte[] dst,
                             int offset,
                             int length)

Description copied from interface: Buffer

Relative bulk get method.

This method transfers bytes from this buffer into the given destination array. If there are fewer bytes remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no bytes are transferred and a BufferUnderflowException is thrown.

Otherwise, this method copies length bytes from this buffer into the given array, starting at the current position of this buffer and at the given offset in the array. The position of this buffer is then incremented by length.

In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop

     for (int i = off; i < off + len; i++)
         dst[i] = src.get();

except that it first checks that there are sufficient bytes in this buffer and it is potentially much more efficient.

Specified by:: get in interface Buffer

Parameters:: dst - The array into which bytes are to be written; offset - The offset within the array of the first byte to be written; must be non-negative and no larger than dst.length; length - The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.length - offset
Returns:: This buffer

put

public ByteBufferWrapper put(Buffer src)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

This method transfers the bytes remaining in the given source buffer into this buffer. If there are more bytes remaining in the source buffer than in this buffer, that is, if src.remaining() > remaining(), then no bytes are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies n = src.remaining() bytes from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.

In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop

     while (src.hasRemaining())
         dst.put(src.get());

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put in interface Buffer

Parameters:: src - The source buffer from which bytes are to be read; must not be this buffer
Returns:: This buffer

put

public ByteBufferWrapper put(Buffer src,
                             int position,
                             int length)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

This method transfers the "length" bytes from the given source buffer into this buffer. If this buffer has less bytes remaining than length, that is, if length > remaining(), then no bytes are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies n = length bytes from the given postion in the source buffer into this buffer, starting from the current buffer position. The positions of this buffer is then incremented by length.

In other words, an invocation of this method of the form dst.put(src, position, length) has exactly the same effect as the loop

     for (int i = 0; i < length; i++)
         dst.put(src.get(i + position));

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put in interface Buffer

Parameters:: src - The source buffer from which bytes are to be read; must not be this buffer; position - starting position in the source buffer; length - number of bytes to be copied
Returns:: This buffer

get

public Buffer get(java.nio.ByteBuffer dst)

Description copied from interface: Buffer

Relative bulk get method.

This method transfers bytes from this buffer into the given destination ByteBuffer. An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocation

     src.get(a, 0, a.remaining())

Specified by:: get in interface Buffer

Returns:: This buffer

get

public Buffer get(java.nio.ByteBuffer dst,
                  int position,
                  int length)

Description copied from interface: Buffer

Relative bulk get method.

This method transfers bytes from this buffer into the given destination ByteBuffer. If there are fewer bytes remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no bytes are transferred and a BufferUnderflowException is thrown.

Otherwise, this method copies length bytes from this buffer into the given ByteBuffer, starting at the current position of this buffer and at the given offset in the ByteBuffer. The position of this buffer is then incremented by length.

In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop

     for (int i = off; i < off + len; i++)
         dst.put(i) = src.get();

except that it first checks that there are sufficient bytes in this buffer and it is potentially much more efficient.

Specified by:: get in interface Buffer

Parameters:: dst - The ByteBuffer into which bytes are to be written; position - The offset within the ByteBuffer of the first byte to be written; must be non-negative and no larger than dst.remaining(); length - The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.remaining() - offset
Returns:: This buffer

put

public Buffer put(java.nio.ByteBuffer src)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

Otherwise, this method copies n = src.remaining() bytes from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.

In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop

     while (src.hasRemaining())
         dst.put(src.get());

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put in interface Buffer

Parameters:: src - The source buffer from which bytes are to be read; must not be this buffer
Returns:: This buffer

put

public Buffer put(java.nio.ByteBuffer src,
                  int position,
                  int length)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

In other words, an invocation of this method of the form dst.put(src, position, length) has exactly the same effect as the loop

     for (int i = 0; i < length; i++)
         dst.put(src.get(i + position));

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put in interface Buffer

Parameters:: src - The source buffer from which bytes are to be read; must not be this buffer; position - starting position in the source buffer; length - number of bytes to be copied
Returns:: This buffer

put

public ByteBufferWrapper put(byte[] src)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

This method transfers the entire content of the given source byte array into this buffer. An invocation of this method of the form dst.put(a) behaves in exactly the same way as the invocation

     dst.put(a, 0, a.length)

Specified by:: put in interface Buffer

Returns:: This buffer

put

public ByteBufferWrapper put(byte[] src,
                             int offset,
                             int length)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

This method transfers bytes into this buffer from the given source array. If there are more bytes to be copied from the array than remain in this buffer, that is, if length > remaining(), then no bytes are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies length bytes from the given array into this buffer, starting at the given offset in the array and at the current position of this buffer. The position of this buffer is then incremented by length.

In other words, an invocation of this method of the form dst.put(src, off, len) has exactly the same effect as the loop

     for (int i = off; i < off + len; i++)
         dst.put(a[i]);

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put in interface Buffer

Parameters:: src - The array from which bytes are to be read; offset - The offset within the array of the first byte to be read; must be non-negative and no larger than array.length; length - The number of bytes to be read from the given array; must be non-negative and no larger than array.length - offset
Returns:: This buffer

put8BitString

public Buffer put8BitString(java.lang.String s)

Description copied from interface: Buffer

Relative bulk put method (optional operation).

This method transfers bytes into this buffer from the given 8-bit source String. If the source String.length() is bigger than this buffer's remaining, that is, if length() > remaining(), then no bytes are transferred and a BufferOverflowException is thrown.

Otherwise, this method copies length bytes from the given String into this buffer.

In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop

     for (int i = 0; i < s.length(); i++)
         dst.put((byte) s.charAt(i));

except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.

Specified by:: put8BitString in interface Buffer

Parameters:: s - The String from which bytes are to be read
Returns:: This buffer

compact

public ByteBufferWrapper compact()

Description copied from interface: Buffer

Compacts this buffer (optional operation).

The bytes between the buffer's current position and its limit, if any, are copied to the beginning of the buffer. That is, the byte at index p = position() is copied to index zero, the byte at index p + 1 is copied to index one, and so forth until the byte at index limit() - 1 is copied to index n = limit() - 1 - p. The buffer's position is then set to n+1 and its limit is set to its capacity. The mark, if defined, is discarded.

The buffer's position is set to the number of bytes copied, rather than to zero, so that an invocation of this method can be followed immediately by an invocation of another relative put method.

Invoke this method after writing data from a buffer in case the write was incomplete. The following loop, for example, copies bytes from one channel to another via the buffer buf:

 buf.clear();          // Prepare buffer for use
 for (;;) {
     if (in.read(buf) < 0 && !buf.hasRemaining())
         break;        // No more bytes to transfer
     buf.flip();
     out.write(buf);
     buf.compact();    // In case of partial write
 }

Specified by:: compact in interface Buffer

Returns:: This buffer

order

public java.nio.ByteOrder order()

Description copied from interface: Buffer

Retrieves this buffer's byte order.

The byte order is used when reading or writing multibyte values, and when creating buffers that are views of this Buffer. The order of a newly-created Buffer is always BIG_ENDIAN.

Specified by:: order in interface Buffer

Returns:: This buffer's byte order

order

public ByteBufferWrapper order(java.nio.ByteOrder bo)

Description copied from interface: Buffer

Modifies this buffer's byte order.

Specified by:: order in interface Buffer

Parameters:: bo - The new byte order, either BIG_ENDIAN or LITTLE_ENDIAN
Returns:: This buffer

getChar

public char getChar()

Description copied from interface: Buffer

Relative get method for reading a char value.

Reads the next two bytes at this buffer's current position, composing them into a char value according to the current byte order, and then increments the position by two.

Specified by:: getChar in interface Buffer

Returns:: The char value at the buffer's current position

getChar

public char getChar(int index)

Description copied from interface: Buffer

Absolute get method for reading a char value.

Reads two bytes at the given index, composing them into a char value according to the current byte order.

Specified by:: getChar in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The char value at the given index

putChar

public ByteBufferWrapper putChar(char value)

Description copied from interface: Buffer

Relative put method for writing a char value (optional operation).

Writes two bytes containing the given char value, in the current byte order, into this buffer at the current position, and then increments the position by two.

Specified by:: putChar in interface Buffer

Parameters:: value - The char value to be written
Returns:: This buffer

putChar

public ByteBufferWrapper putChar(int index,
                                 char value)

Description copied from interface: Buffer

Absolute put method for writing a char value (optional operation).

Writes two bytes containing the given char value, in the current byte order, into this buffer at the given index.

Specified by:: putChar in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The char value to be written
Returns:: This buffer

getShort

public short getShort()

Description copied from interface: Buffer

Relative get method for reading a short value.

Reads the next two bytes at this buffer's current position, composing them into a short value according to the current byte order, and then increments the position by two.

Specified by:: getShort in interface Buffer

Returns:: The short value at the buffer's current position

getShort

public short getShort(int index)

Description copied from interface: Buffer

Absolute get method for reading a short value.

Reads two bytes at the given index, composing them into a short value according to the current byte order.

Specified by:: getShort in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The short value at the given index

putShort

public ByteBufferWrapper putShort(short value)

Description copied from interface: Buffer

Relative put method for writing a short value (optional operation).

Writes two bytes containing the given short value, in the current byte order, into this buffer at the current position, and then increments the position by two.

Specified by:: putShort in interface Buffer

Parameters:: value - The short value to be written
Returns:: This buffer

putShort

public ByteBufferWrapper putShort(int index,
                                  short value)

Description copied from interface: Buffer

Absolute put method for writing a short value (optional operation).

Writes two bytes containing the given short value, in the current byte order, into this buffer at the given index.

Specified by:: putShort in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The short value to be written
Returns:: This buffer

getInt

public int getInt()

Description copied from interface: Buffer

Relative get method for reading an int value.

Reads the next four bytes at this buffer's current position, composing them into an int value according to the current byte order, and then increments the position by four.

Specified by:: getInt in interface Buffer

Returns:: The int value at the buffer's current position

getInt

public int getInt(int index)

Description copied from interface: Buffer

Absolute get method for reading an int value.

Reads four bytes at the given index, composing them into a int value according to the current byte order.

Specified by:: getInt in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The int value at the given index

putInt

public ByteBufferWrapper putInt(int value)

Description copied from interface: Buffer

Relative put method for writing an int value (optional operation).

Writes four bytes containing the given int value, in the current byte order, into this buffer at the current position, and then increments the position by four.

Specified by:: putInt in interface Buffer

Parameters:: value - The int value to be written
Returns:: This buffer

putInt

public ByteBufferWrapper putInt(int index,
                                int value)

Description copied from interface: Buffer

Absolute put method for writing an int value (optional operation).

Writes four bytes containing the given int value, in the current byte order, into this buffer at the given index.

Specified by:: putInt in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The int value to be written
Returns:: This buffer

getLong

public long getLong()

Description copied from interface: Buffer

Relative get method for reading a long value.

Reads the next eight bytes at this buffer's current position, composing them into a long value according to the current byte order, and then increments the position by eight.

Specified by:: getLong in interface Buffer

Returns:: The long value at the buffer's current position

getLong

public long getLong(int index)

Description copied from interface: Buffer

Absolute get method for reading a long value.

Reads eight bytes at the given index, composing them into a long value according to the current byte order.

Specified by:: getLong in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The long value at the given index

putLong

public ByteBufferWrapper putLong(long value)

Description copied from interface: Buffer

Relative put method for writing a long value (optional operation).

Writes eight bytes containing the given long value, in the current byte order, into this buffer at the current position, and then increments the position by eight.

Specified by:: putLong in interface Buffer

Parameters:: value - The long value to be written
Returns:: This buffer

putLong

public ByteBufferWrapper putLong(int index,
                                 long value)

Description copied from interface: Buffer

Absolute put method for writing a long value (optional operation).

Writes eight bytes containing the given long value, in the current byte order, into this buffer at the given index.

Specified by:: putLong in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The long value to be written
Returns:: This buffer

getFloat

public float getFloat()

Description copied from interface: Buffer

Relative get method for reading a float value.

Reads the next four bytes at this buffer's current position, composing them into a float value according to the current byte order, and then increments the position by four.

Specified by:: getFloat in interface Buffer

Returns:: The float value at the buffer's current position

getFloat

public float getFloat(int index)

Description copied from interface: Buffer

Absolute get method for reading a float value.

Reads four bytes at the given index, composing them into a float value according to the current byte order.

Specified by:: getFloat in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The float value at the given index

putFloat

public ByteBufferWrapper putFloat(float value)

Description copied from interface: Buffer

Relative put method for writing a float value (optional operation).

Writes four bytes containing the given float value, in the current byte order, into this buffer at the current position, and then increments the position by four.

Specified by:: putFloat in interface Buffer

Parameters:: value - The float value to be written
Returns:: This buffer

putFloat

public ByteBufferWrapper putFloat(int index,
                                  float value)

Description copied from interface: Buffer

Absolute put method for writing a float value (optional operation).

Writes four bytes containing the given float value, in the current byte order, into this buffer at the given index.

Specified by:: putFloat in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The float value to be written
Returns:: This buffer

getDouble

public double getDouble()

Description copied from interface: Buffer

Relative get method for reading a double value.

Reads the next eight bytes at this buffer's current position, composing them into a double value according to the current byte order, and then increments the position by eight.

Specified by:: getDouble in interface Buffer

Returns:: The double value at the buffer's current position

getDouble

public double getDouble(int index)

Description copied from interface: Buffer

Absolute get method for reading a double value.

Reads eight bytes at the given index, composing them into a double value according to the current byte order.

Specified by:: getDouble in interface Buffer

Parameters:: index - The index from which the bytes will be read
Returns:: The double value at the given index

putDouble

public ByteBufferWrapper putDouble(double value)

Description copied from interface: Buffer

Relative put method for writing a double value (optional operation).

Writes eight bytes containing the given double value, in the current byte order, into this buffer at the current position, and then increments the position by eight.

Specified by:: putDouble in interface Buffer

Parameters:: value - The double value to be written
Returns:: This buffer

putDouble

public ByteBufferWrapper putDouble(int index,
                                   double value)

Description copied from interface: Buffer

Absolute put method for writing a double value (optional operation).

Writes eight bytes containing the given double value, in the current byte order, into this buffer at the given index.

Specified by:: putDouble in interface Buffer

Parameters:: index - The index at which the bytes will be written; value - The double value to be written
Returns:: This buffer

hashCode

public int hashCode()

Overrides:: hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:: equals in class java.lang.Object

compareTo

public int compareTo(Buffer o)

Specified by:: compareTo in interface java.lang.Comparable<Buffer>

toString

public java.lang.String toString()

Overrides:: toString in class java.lang.Object

toStringContent

public java.lang.String toStringContent()

Description copied from interface: Buffer

Returns Buffer content as String, using default Charset

Specified by:: toStringContent in interface Buffer

Returns:: String representation of this Buffer content.

toStringContent

public java.lang.String toStringContent(java.nio.charset.Charset charset)

Description copied from interface: Buffer

Returns Buffer content as String

Specified by:: toStringContent in interface Buffer

Parameters:: charset - the Charset, which will be use for byte[] -> String transformation.
Returns:: String representation of this Buffer content.

toStringContent

public java.lang.String toStringContent(java.nio.charset.Charset charset,
                                        int position,
                                        int limit)

Description copied from interface: Buffer

Returns Buffer's chunk content as String

Specified by:: toStringContent in interface Buffer

Parameters:: charset - the Charset, which will be use for byte[] -> String transformation.; position - the first byte offset in the Buffer (inclusive); limit - the last byte offset in the Buffer (exclusive)
Returns:: String representation of part of this Buffer.

toByteBuffer

public final java.nio.ByteBuffer toByteBuffer()

Specified by:: toByteBuffer in interface Buffer

toByteBuffer

public final java.nio.ByteBuffer toByteBuffer(int position,
                                              int limit)

Specified by:: toByteBuffer in interface Buffer

toByteBufferArray

public final ByteBufferArray toByteBufferArray()

Specified by:: toByteBufferArray in interface Buffer

toByteBufferArray

public final ByteBufferArray toByteBufferArray(int position,
                                               int limit)

Specified by:: toByteBufferArray in interface Buffer

toByteBufferArray

public final ByteBufferArray toByteBufferArray(ByteBufferArray array)

Specified by:: toByteBufferArray in interface Buffer

toByteBufferArray

public final ByteBufferArray toByteBufferArray(ByteBufferArray array,
                                               int position,
                                               int limit)

Specified by:: toByteBufferArray in interface Buffer

toBufferArray

public final BufferArray toBufferArray()

Specified by:: toBufferArray in interface Buffer

toBufferArray

public final BufferArray toBufferArray(int position,
                                       int limit)

Specified by:: toBufferArray in interface Buffer

toBufferArray

public final BufferArray toBufferArray(BufferArray array)

Specified by:: toBufferArray in interface Buffer

toBufferArray

public final BufferArray toBufferArray(BufferArray array,
                                       int position,
                                       int limit)

Specified by:: toBufferArray in interface Buffer

release

public boolean release()

Description copied from interface: WritableMessage

Perform message specific actions to release resources held by the entity backing this WritableMessage.

Specified by:: release in interface WritableMessage

isExternal

public boolean isExternal()

Returns true if the message represents an external resource (for example FileTransfer), which is not loaded in memory. False, if the message is located in memory (like Buffer).

Specified by:: isExternal in interface WritableMessage

wrapByteBuffer

protected ByteBufferWrapper wrapByteBuffer(java.nio.ByteBuffer byteBuffer)

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org.glassfish.grizzly.memory Class ByteBufferWrapper

DEBUG_MODE

visible

allowBufferDispose

disposeStackTrace

ByteBufferWrapper

ByteBufferWrapper

isComposite

prepend

trim

shrink

isDirect

allowBufferDispose

allowBufferDispose

tryDispose

dispose

prepareDispose

underlying

capacity

position

position

limit

limit

mark

reset

clear

flip

rewind

remaining

hasRemaining

isReadOnly

split

slice

slice

duplicate

asReadOnlyBuffer

get

get

put

put

get

get

put

put

get

get

put

put

put

put

put8BitString

compact

order

order

getChar

getChar

putChar

putChar

getShort

getShort

putShort

putShort

getInt

getInt

putInt

putInt

getLong

getLong

putLong

putLong

getFloat

getFloat

putFloat

putFloat

getDouble

getDouble

putDouble

putDouble

hashCode

equals

org.glassfish.grizzly.memory
Class ByteBufferWrapper