edu.isi.pegasus.planner.catalog

Interface Catalog

All Known Subinterfaces:

ReplicaCatalog, SiteCatalog, TransformationCatalog, WorkCatalog

All Known Implementing Classes:

Abstract, Database, Database, Directory, File, FlushedCache, JDBCRC, MRC, OSGMM, Regex, SimpleFile, Text, XML, XML2

public interface Catalog

This interface create a common ancestor for all cataloging interfaces.

Version:

$Revision$

Author:

Jens-S. Vöckler, Yong Zhao

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DB_ALL_PREFIX The default DB Driver properties prefix.

Method Summary

Modifier and Type	Method and Description
void	close() Explicitely free resources before the garbage collection hits.
boolean	connect(java.util.Properties props) Establishes a link between the implementation and the thing the implementation is build upon.
boolean	isClosed() Predicate to check, if the connection with the catalog's implementation is still active.

Field Detail

DB_ALL_PREFIX

static final java.lang.String DB_ALL_PREFIX

The default DB Driver properties prefix.

See Also:

Constant Field Values

Method Detail

connect

boolean connect(java.util.Properties props)

Establishes a link between the implementation and the thing the implementation is build upon.

FIXME: The cause for failure is lost without exceptions.

Parameters:

props - contains all necessary data to establish the link.

Returns:

true if connected now, or false to indicate a failure.

close

void close()

Explicitely free resources before the garbage collection hits.

isClosed

boolean isClosed()

Predicate to check, if the connection with the catalog's implementation is still active. This helps determining, if it makes sense to call close().

Returns:

true, if the implementation is disassociated, false otherwise.

See Also:

close()