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com.tangosol.util
Class Unsafe

java.lang.Object
com.tangosol.util.Unsafe

public class Unsafe

extends java.lang.Object

A collection of "back-door" utilities and helpers used internally.

This class is not intended to be used externally and any usage of this class promises nothing more than un-deterministic behavior which may or may not remain consistent from release to release.

Author:

rhl 2012.12.20

Method Summary

int	getArrayOffset(Binary bin) Return the offset into the underlying byte[] for the specified Binary.
byte[]	getByteArray(Binary bin) Return the underlying byte[] for the specified Binary.
static Unsafe	getUnsafe() Return the singleton Unsafe instance.
Binary	newBinary(byte[] ab, int of, int cb) Return a new Binary instance backed by the specified byte[] beginning at the specified offset and of the specified length.

Method Detail

getUnsafe

public static Unsafe getUnsafe()

Return the singleton Unsafe instance. This method may only be called internally.

Returns:

the singleton instance

getByteArray

public byte[] getByteArray(Binary bin)

Return the underlying byte[] for the specified Binary.

Note: unlike the AbstractReadBuffer.toByteArray() method, this method does not create a copy of the underlying array; it is the caller's responsibility not to mutate the contents of the returned array.

Parameters:

bin - the binary

Returns:

the underlying byte[]

getArrayOffset

public int getArrayOffset(Binary bin)

Return the offset into the underlying byte[] for the specified Binary.

Parameters:

bin - the binary

Returns:

the offset into the underlying byte[]

newBinary

public Binary newBinary(byte[] ab,
                        int of,
                        int cb)

Return a new Binary instance backed by the specified byte[] beginning at the specified offset and of the specified length.

Note: unlike the analagous constructor, this method does not create a copy of the passed array; it is the caller's responsibility not to mutate the contents of the array.

Parameters:

ab - the byte array

of - the starting offset

cb - the length of the binary

Returns:

a new Binary based on the specified array

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