Package org.apache.derby.iapi.services.loader

Interface ClassFactory

All Known Implementing Classes:

DatabaseClasses, ReflectClassesJava2

public interface ClassFactory

A class factory module to handle application classes and generated classes.

Method Summary

Modifier and Type	Method	Description
ClassInspector	getClassInspector()	Return a ClassInspector object
int	getClassLoaderVersion()	Return the in-memory "version" of the class manager.
boolean	isApplicationClass(java.lang.Class theClass)	Was the passed in class loaded by a ClassManager.
java.lang.Class	loadApplicationClass(java.io.ObjectStreamClass classDescriptor)	Load an application class, or a class that is potentially an application class.
java.lang.Class	loadApplicationClass(java.lang.String className)	Load an application class, or a class that is potentially an application class.
GeneratedClass	loadGeneratedClass(java.lang.String fullyQualifiedName, ByteArray classDump)	Add a generated class to the class manager's class repository.
void	notifyModifyClasspath(java.lang.String classpath)	Notify the class manager that the classpath has been modified.
void	notifyModifyJar(boolean reload)	Notify the class manager that a jar file has been modified.

Method Detail

loadGeneratedClass

GeneratedClass loadGeneratedClass(java.lang.String fullyQualifiedName,
                                  ByteArray classDump)
                           throws StandardException

Add a generated class to the class manager's class repository.

Throws:

StandardException - Standard Derby error policy

getClassInspector

ClassInspector getClassInspector()

Return a ClassInspector object

loadApplicationClass

java.lang.Class loadApplicationClass(java.lang.String className)
                              throws java.lang.ClassNotFoundException

Load an application class, or a class that is potentially an application class.

Throws:

java.lang.ClassNotFoundException - Class cannot be found, or a SecurityException or LinkageException was thrown loading the class.

loadApplicationClass

java.lang.Class loadApplicationClass(java.io.ObjectStreamClass classDescriptor)
                              throws java.lang.ClassNotFoundException

Load an application class, or a class that is potentially an application class.

Throws:

java.lang.ClassNotFoundException - Class cannot be found, or a SecurityException or LinkageException was thrown loading the class.

isApplicationClass

boolean isApplicationClass(java.lang.Class theClass)

Was the passed in class loaded by a ClassManager.

Returns:

true if the class was loaded by a Derby class manager, false it is was loaded by the system class loader, or another class loader.

notifyModifyJar

void notifyModifyJar(boolean reload)
              throws StandardException

Notify the class manager that a jar file has been modified.

Parameters:

reload - Restart any attached class loader

Throws:

StandardException - thrown on error

notifyModifyClasspath

void notifyModifyClasspath(java.lang.String classpath)
                    throws StandardException

Notify the class manager that the classpath has been modified.

Throws:

StandardException - thrown on error

getClassLoaderVersion

int getClassLoaderVersion()

Return the in-memory "version" of the class manager. The version is bumped everytime the classes are re-loaded.