org.nuxeo.ecm.core.blob.binary

Class AbstractBinaryManager

java.lang.Object

org.nuxeo.ecm.core.blob.binary.AbstractBinaryManager

All Implemented Interfaces:

BinaryManager

Direct Known Subclasses:

CachingBinaryManager, GridFSBinaryManager, LocalBinaryManager

public abstract class AbstractBinaryManager
extends Object
implements BinaryManager

Abstract BinaryManager implementation that provides a few utilities

Author:

Florent Guillaume

Field Summary

Fields

Modifier and Type	Field and Description
protected String	blobProviderId
static int	DEFAULT_DEPTH
static String	DEFAULT_DIGEST
protected BinaryManagerRootDescriptor	descriptor
static HashMap<Integer,String>	DIGESTS_BY_LENGTH
protected BinaryGarbageCollector	garbageCollector
static int	MAX_BUF_SIZE
static String	MD5_DIGEST
static int	MD5_DIGEST_LENGTH
static int	MIN_BUF_SIZE
static String	SHA1_DIGEST
static int	SHA1_DIGEST_LENGTH
static String	SHA256_DIGEST
static int	SHA256_DIGEST_LENGTH

Fields inherited from interface org.nuxeo.ecm.core.blob.binary.BinaryManager

PROP_KEY, PROP_PATH

Constructor Summary

Constructors

Constructor and Description
AbstractBinaryManager()

Method Summary

Modifier and Type	Method and Description
Binary	getBinary(Blob blob) Saves the given blob into a Binary.
protected abstract Binary	getBinary(InputStream in) Creates a binary value from the given input stream.
abstract Binary	getBinary(String digest) Returns a Binary corresponding to the given digest.
protected String	getDefaultDigestAlgorithm() Gets the default message digest to use to hash binaries.
protected BinaryManagerRootDescriptor	getDescriptor(File configFile) Gets existing descriptor or creates a default one.
String	getDigestAlgorithm() Returns the digest algorithm used to store and digest binaries.
BinaryGarbageCollector	getGarbageCollector() Returns the Binary Garbage Collector that can be used for this binary manager.
void	initialize(String blobProviderId, Map<String,String> properties) Initializes the binary manager.
void	removeBinaries(Collection<String> digests) Remove definitively a set of binaries
protected String	storeAndDigest(InputStream in, OutputStream out)
static String	toHexString(byte[] data)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.nuxeo.ecm.core.blob.binary.BinaryManager

close

Field Detail

MD5_DIGEST

public static final String MD5_DIGEST

See Also:

Constant Field Values

SHA1_DIGEST

public static final String SHA1_DIGEST

See Also:

Constant Field Values

SHA256_DIGEST

public static final String SHA256_DIGEST

See Also:

Constant Field Values

MD5_DIGEST_LENGTH

public static final int MD5_DIGEST_LENGTH

See Also:

Constant Field Values

SHA1_DIGEST_LENGTH

public static final int SHA1_DIGEST_LENGTH

See Also:

Constant Field Values

SHA256_DIGEST_LENGTH

public static final int SHA256_DIGEST_LENGTH

See Also:

Constant Field Values

DIGESTS_BY_LENGTH

public static final HashMap<Integer,String> DIGESTS_BY_LENGTH

Since:

7.4

DEFAULT_DIGEST

public static final String DEFAULT_DIGEST

See Also:

Constant Field Values

DEFAULT_DEPTH

public static final int DEFAULT_DEPTH

See Also:

Constant Field Values

blobProviderId

protected String blobProviderId

descriptor

protected BinaryManagerRootDescriptor descriptor

garbageCollector

protected BinaryGarbageCollector garbageCollector

MIN_BUF_SIZE

public static final int MIN_BUF_SIZE

See Also:

Constant Field Values

MAX_BUF_SIZE

public static final int MAX_BUF_SIZE

See Also:

Constant Field Values

Constructor Detail

AbstractBinaryManager

public AbstractBinaryManager()

Method Detail

initialize

public void initialize(String blobProviderId,
                       Map<String,String> properties)
                throws IOException

Description copied from interface: BinaryManager

Initializes the binary manager.

Specified by:

initialize in interface BinaryManager

Parameters:

blobProviderId - the blob provider id for this binary manager

properties - initialization properties

Throws:

IOException

getBinary

protected abstract Binary getBinary(InputStream in)
                             throws IOException

Creates a binary value from the given input stream.

Throws:

IOException

getBinary

public Binary getBinary(Blob blob)
                 throws IOException

Description copied from interface: BinaryManager

Saves the given blob into a Binary.

Returns a Binary representing the stream. The Binary includes a digest that is a sufficient representation to persist it.

If the blob is a temporary FileBlob, then the temporary file may be reused as the final storage location after being moved.

Specified by:

getBinary in interface BinaryManager

Parameters:

blob - the blob

Returns:

the corresponding binary

Throws:

IOException

getBinary

public abstract Binary getBinary(String digest)

Description copied from interface: BinaryManager

Returns a Binary corresponding to the given digest.

A null is returned if the digest could not be found.

Specified by:

getBinary in interface BinaryManager

Parameters:

digest - the digest, or null

Returns:

the corresponding binary

removeBinaries

public void removeBinaries(Collection<String> digests)

Description copied from interface: BinaryManager

Remove definitively a set of binaries

Specified by:

removeBinaries in interface BinaryManager

Parameters:

digests - a set of digests, must not be null.

getDescriptor

protected BinaryManagerRootDescriptor getDescriptor(File configFile)
                                             throws IOException

Gets existing descriptor or creates a default one.

Throws:

IOException

storeAndDigest

protected String storeAndDigest(InputStream in,
                                OutputStream out)
                         throws IOException

Throws:

IOException

toHexString

public static String toHexString(byte[] data)

getGarbageCollector

public BinaryGarbageCollector getGarbageCollector()

Description copied from interface: BinaryManager

Returns the Binary Garbage Collector that can be used for this binary manager.

Several calls to this method will return the same GC, so that its status can be monitored using BinaryGarbageCollector.isInProgress().

Specified by:

getGarbageCollector in interface BinaryManager

Returns:

the binary GC

getDigestAlgorithm

public String getDigestAlgorithm()

Description copied from interface: BinaryManager

Returns the digest algorithm used to store and digest binaries.

Specified by:

getDigestAlgorithm in interface BinaryManager

getDefaultDigestAlgorithm

protected String getDefaultDigestAlgorithm()

Gets the default message digest to use to hash binaries.

Since:

6.0