org.jboss.dna.graph.properties.basic
Class InMemoryBinary

java.lang.Object
  org.jboss.dna.graph.properties.basic.InMemoryBinary

All Implemented Interfaces:

Serializable, Comparable<Binary>, Binary

@Immutable
public class InMemoryBinary
extends Object
implements Binary

An implementation of Binary that keeps the binary data in-memory.

Author:

Randall Hauch

See Also:

Serialized Form

Field Summary

protected static Set<String>	ALGORITHMS_NOT_FOUND_AND_LOGGED
protected static byte[]	EMPTY_CONTENT

Constructor Summary

InMemoryBinary(byte[] bytes)

Method Summary

void	acquire() Acquire any resources for this data.
int	compareTo(Binary o)
boolean	equals(Object obj)
byte[]	getBytes() Get the contents of this data as a byte array.
byte[]	getHash() Get the SHA-1 hash of the contents.
protected byte[]	getHash(String digestName) Get the hash of the contents, using the digest identified by the supplied name.
long	getSize() Get the length of this binary data.
InputStream	getStream() Get the contents of this data as a stream.
void	release() Release any acquired resources.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ALGORITHMS_NOT_FOUND_AND_LOGGED

protected static final Set<String> ALGORITHMS_NOT_FOUND_AND_LOGGED

EMPTY_CONTENT

protected static final byte[] EMPTY_CONTENT

Constructor Detail

InMemoryBinary

public InMemoryBinary(byte[] bytes)

Method Detail

getSize

public long getSize()

Get the length of this binary data.

Specified by:

getSize in interface Binary

Returns:

the number of bytes in this binary data

See Also:

Binary.acquire()

getHash

public byte[] getHash()

Get the SHA-1 hash of the contents. This hash can be used to determine whether two Binary instances contain the same content.

Repeatedly calling this method should generally be efficient, as it most implementations will compute the hash only once.

Specified by:

getHash in interface Binary

Returns:

the hash of the contents as a byte array, or an empty array if the hash could not be computed.

See Also:

Binary.getHash()

getHash

protected byte[] getHash(String digestName)
                  throws NoSuchAlgorithmException

Get the hash of the contents, using the digest identified by the supplied name.

Parameters:

digestName - the name of the hashing function (or message digest) that should be used

Returns:

the hash of the contents as a byte array

Throws:

NoSuchAlgorithmException - if the supplied algorithm could not be found

getBytes

public byte[] getBytes()

Get the contents of this data as a byte array.

Specified by:

getBytes in interface Binary

Returns:

the data as an array

See Also:

Binary.acquire()

getStream

public InputStream getStream()

Get the contents of this data as a stream.

Specified by:

getStream in interface Binary

Returns:

the stream to this data's contents

See Also:

Binary.acquire()

acquire

public void acquire()

Acquire any resources for this data. This method must be called before any other method on this object.

Specified by:

acquire in interface Binary

See Also:

Binary.release()

release

public void release()

Release any acquired resources. This method must be called after a client is finished with this value.

Specified by:

release in interface Binary

See Also:

Binary.acquire()

compareTo

public int compareTo(Binary o)

Specified by:

compareTo in interface Comparable<Binary>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object