gov.bnl.star.offline.scheduler.catalog
Class FileCatalog

java.lang.Object
  gov.bnl.star.offline.scheduler.catalog.FileCatalog

Direct Known Subclasses:

StarCatalog

Deprecated. please see gov.bnl.star.offline.scheduler.dataset.* for replacements. Represent the file catalog interface. To make the scheduler interoperate with other file catalog, just implement this interface in a new class.

public abstract class FileCatalog
extends java.lang.Object

Version:

$Revision: 1.11 $ $Date: 2006/11/21 00:41:31 $

Author:

Gabriele Carcassi

Constructor Summary

FileCatalog()
Deprecated.

Method Summary

abstract java.util.Iterator	executeQuery(java.lang.String query) Deprecated. Executes the query and returns all the results.
abstract java.util.Iterator	executeQuery(java.lang.String query, int nExpectedResults) Deprecated. Executes the query with an estimate on the number of results.
abstract java.util.Iterator	executeQuery(java.lang.String query, int start, int limit) Deprecated. Executes the query with the star/limit syntax.
static FileCatalog	getCatalog() Deprecated. Gets the default file catalog Class.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileCatalog

public FileCatalog()

Deprecated.

Method Detail

getCatalog

public static FileCatalog getCatalog()

Deprecated.

Gets the default file catalog Class.

Returns:

the file catalog

executeQuery

public abstract java.util.Iterator executeQuery(java.lang.String query)

Deprecated.

Executes the query and returns all the results.

Parameters:

query - the query to be executed

Returns:

a PhysicalFile iterator

executeQuery

public abstract java.util.Iterator executeQuery(java.lang.String query,
                                                int nExpectedResults)

Deprecated.

Executes the query with an estimate on the number of results. The catalog should be able to make some optimizations in this case.

Parameters:

query - the query to be executed

nExpectedResults - an estimate of input files that are required

Returns:

a PhysicalFile iterator

executeQuery

public abstract java.util.Iterator executeQuery(java.lang.String query,
                                                int start,
                                                int limit)

Deprecated.

Executes the query with the star/limit syntax.

Parameters:

query - the query to be executed

start - the offset from which start to read

limit - the number of records returned

Returns:

a PhysicalFile iterator