org.ptolemy.classloading

Interface ModelElementClassProvider

All Known Implementing Classes:

DefaultModelElementClassProvider, PackageBasedModelElementClassProvider

public interface ModelElementClassProvider

Get the classes for different types of model elements.

Most important cases are actors and directors. But also dedicated port or parameter classes can be offered via implementations of this interface.

Since:

Ptolemy II 11.0

Version:

$Id$

Author:

ErwinDL

Pt.AcceptedRating:

Yellow (ErwinDL)

Pt.ProposedRating:

Yellow (ErwinDL)

Method Summary

Modifier and Type	Method and Description
java.lang.Class<? extends NamedObj>	getClass(java.lang.String className, VersionSpecification versionSpec) Return the requested class for the requested version (if specified).

Method Detail

getClass

java.lang.Class<? extends NamedObj> getClass(java.lang.String className,
                                             VersionSpecification versionSpec)
                                      throws java.lang.ClassNotFoundException

Return the requested class for the requested version (if specified). If this provider doesn't have this class available, it should throw a ClassNotFoundException. (Optionally, it could also just return null, for those dvp-ers who don't like exceptions. ;-) )

Parameters:

className - typically a fully qualified Java class name. Mandatory non-null.

versionSpec - optional constraint on desired version for the class that must be provided. If null, no version constraint is imposed.

Returns:

the concrete class of the NamedObj matching the given className.

Throws:

java.lang.ClassNotFoundException - if this provider can not provide the requested class for the requested version (if specified)

See Also:

VersionSpecification