org.griphyn.cPlanner.code.generator.condor.style
Class CondorStyleFactory

java.lang.Object
  org.griphyn.cPlanner.code.generator.condor.style.CondorStyleFactory

public class CondorStyleFactory
extends Object

A factory class to load the appropriate type of Condor Style impelementations. This factory class is different from other factories, in the sense that it must be instantiated first and intialized first before calling out to any of the Factory methods.

Version:

$Revision: 50 $

Author:

Karan Vahi

Field Summary

private static String	CONDOR_STYLE_IMPLEMENTING_CLASS The name of the class implementing the Condor Style.
static String	DEFAULT_PACKAGE_NAME The default package where the all the implementing classes are supposed to reside.
private static String	GLIDEIN_STYLE_IMPLEMENTING_CLASS The name of the class implementing the Condor GlideIN Style.
private static String	GLOBUS_STYLE_IMPLEMENTING_CLASS The name of the class implementing the CondorG Style.
private static Map	mImplementingClassNameTable A table that maps, VDS style keys to the names of the corresponding classes implementing the CondorStyle interface.
private Map	mImplementingClassTable A table that maps, VDS style keys to appropriate classes implementing the CondorStyle interface
private boolean	mInitialized A boolean indicating that the factory has been initialized.

Constructor Summary

CondorStyleFactory()
The default constructor.

Method Summary

private Object	get(String style) Returns the implementation from the implementing class table.
private static Map	implementingClassNameTable() Returns a table that maps, the VDS style keys to the names of implementing classes.
void	initialize(PegasusProperties properties, PoolInfoProvider siteCatalog) Initializes the Factory.
private CondorStyle	loadInstance(PegasusProperties properties, PoolInfoProvider siteCatalog, String className) This method loads the appropriate Condor Style using reflection.
CondorStyle	loadInstance(SubInfo job) This method loads the appropriate implementing CondorStyle as specified by the user at runtime.
private void	put(String style, Object implementation) Inserts an entry into the implementing class table.

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

The default package where the all the implementing classes are supposed to reside.

See Also:

Constant Field Values

CONDOR_STYLE_IMPLEMENTING_CLASS

private static final String CONDOR_STYLE_IMPLEMENTING_CLASS

The name of the class implementing the Condor Style.

See Also:

Constant Field Values

GLIDEIN_STYLE_IMPLEMENTING_CLASS

private static final String GLIDEIN_STYLE_IMPLEMENTING_CLASS

The name of the class implementing the Condor GlideIN Style.

See Also:

Constant Field Values

GLOBUS_STYLE_IMPLEMENTING_CLASS

private static final String GLOBUS_STYLE_IMPLEMENTING_CLASS

The name of the class implementing the CondorG Style.

See Also:

Constant Field Values

mImplementingClassNameTable

private static Map mImplementingClassNameTable

A table that maps, VDS style keys to the names of the corresponding classes implementing the CondorStyle interface.

mImplementingClassTable

private Map mImplementingClassTable

A table that maps, VDS style keys to appropriate classes implementing the CondorStyle interface

mInitialized

private boolean mInitialized

A boolean indicating that the factory has been initialized.

Constructor Detail

CondorStyleFactory

public CondorStyleFactory()

The default constructor.

Method Detail

initialize

public void initialize(PegasusProperties properties,
                       PoolInfoProvider siteCatalog)
                throws CondorStyleFactoryException

Initializes the Factory. Loads all the implementations just once.

Parameters:

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

siteCatalog - a handle to the Site Catalog being used.

Throws:

CondorStyleFactoryException - that nests any error that might occur during the instantiation of the implementation.

loadInstance

public CondorStyle loadInstance(SubInfo job)
                         throws CondorStyleFactoryException

This method loads the appropriate implementing CondorStyle as specified by the user at runtime. The CondorStyle is initialized and returned.

Parameters:

job - the job for which the corresponding style is required.

Throws:

CondorStyleFactoryException - that nests any error that might occur during the instantiation of the implementation.

loadInstance

private CondorStyle loadInstance(PegasusProperties properties,
                                 PoolInfoProvider siteCatalog,
                                 String className)
                          throws CondorStyleFactoryException

This method loads the appropriate Condor Style using reflection.

Parameters:

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

siteCatalog - a handle to the Site Catalog being used.

className - the name of the implementing class.

Returns:

the instance of the class implementing this interface.

Throws:

CondorStyleFactoryException - that nests any error that might occur during the instantiation of the implementation.

See Also:

DEFAULT_PACKAGE_NAME

get

private Object get(String style)

Returns the implementation from the implementing class table.

Parameters:

style - the VDS style

Returns:

implementation the class implementing that style, else null

put

private void put(String style,
                 Object implementation)

Inserts an entry into the implementing class table.

Parameters:

style - the VDS style

implementation - the class implementing that style.

implementingClassNameTable

private static Map implementingClassNameTable()

Returns a table that maps, the VDS style keys to the names of implementing classes.

Returns:

a Map indexed by VDS styles, and values as names of implementing classes.