com.ibm.itim.policy.join
Class JoinClassCache

java.lang.Object
  com.ibm.itim.policy.join.JoinClassCache

public class JoinClassCache
extends java.lang.Object

This class serves as a "mini", short-lived cache. It is to be "newed" by each instance of JoinDirector For performance reasons - all public methods in the join class would have to be synchronized - single global instance of this class should probably not be servicing multiple threads busy joining attributes at the same time. It is to avoid them step over each other's data kept in fields of cached class instances.

Constructor Summary

JoinClassCache()

Method Summary

JoinInterface

getInstance(java.lang.String className) will return the only instance of join class if requested for the first time - new instance will be created first

Methods inherited from class java.lang.Object

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

Constructor Detail

JoinClassCache

public JoinClassCache()

Method Detail

getInstance

public JoinInterface getInstance(java.lang.String className)
                          throws java.lang.ClassNotFoundException,
                                 java.lang.InstantiationException,
                                 java.lang.IllegalAccessException

will return the only instance of join class if requested for the first time - new instance will be created first

Parameters:

className - name of the class to return an instance of

Returns:

return instance of policy join class

Throws:

java.lang.ClassNotFoundException - if class not found on the classpath

java.lang.InstantiationException - if couldn't instantiate the class

java.lang.IllegalAccessException - when java access security rule was violated