co.paralleluniverse.common.io

Class Persistables

java.lang.Object

co.paralleluniverse.common.io.Persistables

public final class Persistables
extends Object

Provides utility methods for working with Persistables and/or ByteBuffers.

Method Summary

Methods

Modifier and Type	Method and Description
static ByteBuffer	copyOf(ByteBuffer buffer) Returns a newly-allocated copy of a given ByteBuffer's remaining contents.
static Persistable	persistable(ByteBuffer buffer) Converts a ByteBuffer into a Persistable.
static Persistable	persistable(Streamable streamable) Converts a Streamable into a Persistable.
static ByteBuffer	slice(ByteBuffer buffer, int length) Returns a newly allocated ByteBuffer.slice(), starting from the current position, of a given ByteBuffer.
static ByteBuffer	slice(ByteBuffer buffer, int start, int length) Returns a newly allocated ByteBuffer.slice() of a given ByteBuffer.
static byte[]	toByteArray(ByteBuffer buffer) Returns an array containing a ByteBuffer's remaining contents.

Methods inherited from class java.lang.Object

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

Method Detail

persistable

public static Persistable persistable(Streamable streamable)

Converts a Streamable into a Persistable.

Parameters:

streamable - A Streamable object.

Returns:

A Persistable representation of the given object.

persistable

public static Persistable persistable(ByteBuffer buffer)

Converts a ByteBuffer into a Persistable.

Parameters:

buffer - The buffer

Returns:

A Persistable wrapper for the buffer.

toByteArray

public static byte[] toByteArray(ByteBuffer buffer)

Returns an array containing a ByteBuffer's remaining contents.
Upon returning from this method, the buffer's position will remain unchanged.

Parameters:

buffer - The buffer to write into the array.

Returns:

A newly allocated array of size buffer.remaining() containing the buffer's contents.

copyOf

public static ByteBuffer copyOf(ByteBuffer buffer)

Returns a newly-allocated copy of a given ByteBuffer's remaining contents.
Upon return from this method, the original buffer's position will be unchanged, and the returned buffer's position will be 0.

This method is not thread-safe.

Parameters:

buffer - The buffer to copy.

Returns:

A copy of the buffer's remaining contents.

slice

public static ByteBuffer slice(ByteBuffer buffer,
               int start,
               int length)

Returns a newly allocated ByteBuffer.slice() of a given ByteBuffer. The slice and the original buffer will share their contents.
Upon return from this method, the original buffer's position will be unchanged, and the returned buffer's position will be 0.

This method is not thread-safe.

Parameters:

buffer - The buffer to slice.

start - The position of the slice's start in the given buffer.

length - The length in bytes of the slice.

Returns:

A slice of the buffer.

See Also:

ByteBuffer.slice()

slice

public static ByteBuffer slice(ByteBuffer buffer,
               int length)

Returns a newly allocated ByteBuffer.slice(), starting from the current position, of a given ByteBuffer. The slice and the original buffer will share their contents.
Upon return from this method, the original buffer's position will have advanced by length, and the returned buffer's position will be 0.

This method is not thread-safe.

Parameters:

buffer - The buffer to slice.

length - The length in bytes of the slice.

Returns:

A slice of the buffer.

See Also:

ByteBuffer.slice()