javax.rules
Class RuleServiceProvider

java.lang.Object
  javax.rules.RuleServiceProvider

public abstract class RuleServiceProvider

extends java.lang.Object

This class provides access to the RuleRuntime and RuleAdministrator implementation supplied by your rule engine vendor when running under J2SE.

This class should be used in environments without a JNDI provider - typically when writing standalone J2SE clients. Within the J2EE environment the RuleServiceProvider implementation class provided by your rule engine vendor should be retrieved using a JNDI lookup.

This class should be constructed using the RuleServiceProviderManager.getRuleServiceProvider method.

See Also:

RuleRuntime, RuleAdministrator, RuleServiceProviderManager

Constructor Summary

RuleServiceProvider()

Method Summary

protected static java.lang.Object	createInstance(java.lang.String className) Create an instance of the specified class.
abstract RuleAdministrator	getRuleAdministrator() Returns a class instance of RuleAdministrator
abstract RuleRuntime	getRuleRuntime() Returns a class instance of RuleRuntime
void	setClassLoader(java.lang.ClassLoader classLoader) Associates a ClassLoader instance with this class.

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleServiceProvider

public RuleServiceProvider()

Method Detail

getRuleRuntime

public abstract RuleRuntime getRuleRuntime()
                                    throws ConfigurationException

Returns a class instance of RuleRuntime

Returns:

an instance of RuleRuntime

Throws:

ConfigurationException - if a specified RuleRuntime class cannot be instantiated.

getRuleAdministrator

public abstract RuleAdministrator getRuleAdministrator()
                                                throws ConfigurationException

Returns a class instance of RuleAdministrator

Returns:

an instance of RuleAdministrator

Throws:

ConfigurationException - if a specified RuleAdministrator class cannot be instantiated.

setClassLoader

public void setClassLoader(java.lang.ClassLoader classLoader)

Associates a ClassLoader instance with this class. The ClassLoader will be used to instantiate your rule engine provider's implementation classes.

createInstance

protected static java.lang.Object createInstance(java.lang.String className)
                                          throws java.lang.ClassNotFoundException,
                                                 java.lang.InstantiationException,
                                                 java.lang.IllegalAccessException

Create an instance of the specified class. Create the instance through the classloader if one has been set, otherwize use the system classloader. Implementors specializing this implementation can overide this method.

Parameters:

className - the fully qualified class name

Returns:

a class instance given a class name.

Throws:

java.lang.ClassNotFoundException

java.lang.InstantiationException

java.lang.IllegalAccessException