org.apache.any23.writer

Class WriterFactoryRegistry

java.lang.Object

org.apache.any23.writer.WriterFactoryRegistry

public class WriterFactoryRegistry
extends Object

Registry class for WriterFactorys.

Author:

Michele Mostarda (mostarda@fbk.eu), Hans Brende (hansbrende@apache.org)

Constructor Summary

Constructors

Constructor and Description
WriterFactoryRegistry()

Method Summary

Modifier and Type	Method and Description
static String	getIdentifier(WriterFactory writerClass) Reads the identifier specified for the given WriterFactory.
List<String>	getIdentifiers()
static WriterFactoryRegistry	getInstance()
static String	getMimeType(WriterFactory writerClass) Reads the MIME Type specified for the given WriterFactory.
Collection<String>	getMimeTypes()
WriterFactory	getWriterByIdentifier(String id) Returns the WriterFactory identified by id.
FormatWriter	getWriterInstanceByIdentifier(String id, OutputStream os) Deprecated. since 2.3. Use getWriterByIdentifier(String) in combination with TripleWriterFactory.getTripleWriter(OutputStream, Settings) instead.
List<WriterFactory>	getWriters()
Collection<WriterFactory>	getWritersByMimeType(String mimeType) Returns all the writers matching the specified mimeType.
boolean	hasIdentifier(String id) Verifies if a WriterFactory with given id identifier has been registered.
void	register(WriterFactory f) Registers a new WriterFactory to the registry.

Methods inherited from class java.lang.Object

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

Constructor Detail

WriterFactoryRegistry

public WriterFactoryRegistry()

Method Detail

getIdentifier

public static String getIdentifier(WriterFactory writerClass)

Reads the identifier specified for the given WriterFactory.

Parameters:

writerClass - writer class.

Returns:

identifier.

getMimeType

public static String getMimeType(WriterFactory writerClass)

Reads the MIME Type specified for the given WriterFactory.

Parameters:

writerClass - writer class.

Returns:

MIME type.

getInstance

public static WriterFactoryRegistry getInstance()

Returns:

the WriterFactoryRegistry singleton instance.

register

public void register(WriterFactory f)

Registers a new WriterFactory to the registry.

Parameters:

f - the writer factory to be registered.

Throws:

IllegalArgumentException - if the id or the mimetype are null or empty strings or if the identifier has been already defined.

hasIdentifier

public boolean hasIdentifier(String id)

Verifies if a WriterFactory with given id identifier has been registered.

Parameters:

id - identifier.

Returns:

true if the identifier has been registered, false otherwise.

getIdentifiers

public List<String> getIdentifiers()

Returns:

the list of all the specified identifiers.

getMimeTypes

public Collection<String> getMimeTypes()

Returns:

the list of MIME types covered by the registered WriterFactory instances.

getWriters

public List<WriterFactory> getWriters()

Returns:

the list of all the registered WriterFactory instances.

getWriterByIdentifier

public WriterFactory getWriterByIdentifier(String id)

Returns the WriterFactory identified by id.

Parameters:

id - the writer identifier.

Returns:

the WriterFactory matching the id or null if not found.

getWritersByMimeType

public Collection<WriterFactory> getWritersByMimeType(String mimeType)

Returns all the writers matching the specified mimeType.

Parameters:

mimeType - a MIMEType.

Returns:

a list of matching writers or an empty list.

getWriterInstanceByIdentifier

@Deprecated
public FormatWriter getWriterInstanceByIdentifier(String id,
                                                              OutputStream os)

Deprecated. since 2.3. Use getWriterByIdentifier(String) in combination with TripleWriterFactory.getTripleWriter(OutputStream, Settings) instead.

Returns an instance of FormatWriter ready to write on the given OutputStream.

Parameters:

id - the identifier of the FormatWriter to instantiate.

os - the output stream.

Returns:

the not null FormatWriter instance.

Throws:

NullPointerException - if the id doesn't match any registered writer.