edu.isi.pegasus.planner.partitioner
Class PartitionerFactory

java.lang.Object
  edu.isi.pegasus.planner.partitioner.PartitionerFactory

public class PartitionerFactory
extends Object

A Factory class to load the right type of partitioner at runtime, as specified by the Properties. Each invocation, results in a new partitioner being loaded.

Version:

$Revision: 2576 $

Author:

Karan Vahi

Field Summary

static String	DEFAULT_PACKAGE_NAME Package to prefix "just" class names with.
static String	DEFAULT_PARTITIONING_CLASS The name of the class that does level based partitioning.
static String	HORIZONTAL_PARTITIONING_CLASS The name of the class that does horizontal based partitioning.
static String	LABEL_BASED_PARTITIONING_CLASS The name of the class that does label based partitioning.
static String	LEVEL_BASED_PARTITIONING_CLASS The name of the class that does level based partitioning.
private static String[]	PARTITIONING_CLASSES An array of known partitioning classes.

Constructor Summary

PartitionerFactory()

Method Summary

static Partitioner

loadInstance(PegasusProperties properties, GraphNode root, Map graph, String className) Loads the implementing class corresponding to the type specified by the user.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PACKAGE_NAME

public static final String DEFAULT_PACKAGE_NAME

Package to prefix "just" class names with.

See Also:

Constant Field Values

LEVEL_BASED_PARTITIONING_CLASS

public static final String LEVEL_BASED_PARTITIONING_CLASS

The name of the class that does level based partitioning.

See Also:

Constant Field Values

LABEL_BASED_PARTITIONING_CLASS

public static final String LABEL_BASED_PARTITIONING_CLASS

The name of the class that does label based partitioning.

See Also:

Constant Field Values

HORIZONTAL_PARTITIONING_CLASS

public static final String HORIZONTAL_PARTITIONING_CLASS

The name of the class that does horizontal based partitioning.

See Also:

Constant Field Values

DEFAULT_PARTITIONING_CLASS

public static final String DEFAULT_PARTITIONING_CLASS

The name of the class that does level based partitioning.

See Also:

Constant Field Values

PARTITIONING_CLASSES

private static final String[] PARTITIONING_CLASSES

An array of known partitioning classes.

Constructor Detail

PartitionerFactory

public PartitionerFactory()

Method Detail

loadInstance

public static Partitioner loadInstance(PegasusProperties properties,
                                       GraphNode root,
                                       Map graph,
                                       String className)
                                throws PartitionerFactoryException

Loads the implementing class corresponding to the type specified by the user. The properties object passed should not be null.

Parameters:

properties - the PegasusProperties object containing all the properties required by Pegasus.

root - the dummy root node of the graph.

graph - the map containing all the nodes of the graph keyed by the logical id of the nodes.

className - the name of the implementing class.

Returns:

the instance of the class implementing this interface.

Throws:

PartitionerFactoryException - that nests any error that might occur during the instantiation

See Also:

DEFAULT_PACKAGE_NAME