Package com.sleepycat.util

Class ClassResolver

java.lang.Object

com.sleepycat.util.ClassResolver

public class ClassResolver
extends java.lang.Object

Implements policies for loading user-supplied classes. The resolveClass(java.lang.String, java.lang.ClassLoader) method should be used to load all user-supplied classes, and the ClassResolver.Stream class should be used as a replacement for ObjectInputStream to deserialize instances of user-supplied classes.

The ClassLoader specified as a param should be the one configured using EnvironmentConfig.setClassLoader. This loader is used, if non-null. If the loader param is null, but a non-null thread-context loader is available, the latter is used. If the loader param and thread-context loader are both null, or if they fail to load a class by throwing ClassNotFoundException, then the default Java mechanisms for determining the class loader are used.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ClassResolver.Stream	A specialized ObjectInputStream that supports use of a user-specified ClassLoader.

Constructor Summary

Constructors

Constructor	Description
ClassResolver()

Method Summary

Modifier and Type	Method	Description
static java.lang.Class	resolveClass(java.lang.String className, java.lang.ClassLoader classLoader)	A specialized Class.forName method that supports use of a user-specified ClassLoader.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassResolver

public ClassResolver()

Method Detail

resolveClass

public static java.lang.Class resolveClass(java.lang.String className,
                                           java.lang.ClassLoader classLoader)
                                    throws java.lang.ClassNotFoundException

A specialized Class.forName method that supports use of a user-specified ClassLoader. If the loader param and thread-context loader are both null, of if they throw ClassNotFoundException, then Class.forName is called and the "current loader" (the one used to load JE) will be used.

Parameters:

className - the class name.

classLoader - the ClassLoader.

Returns:

the Class.

Throws:

java.lang.ClassNotFoundException - if the class is not found.