org.wso2.carbon.rule.kernel.engine
Class RuleEngine

java.lang.Object
  org.wso2.carbon.rule.kernel.engine.RuleEngine

public class RuleEngine
extends Object

this class is the layer in between top layers (i.e web service layer and the mediation layer) and the rule back end runtime. This class is used to create the sessions which does the data binding work.

Constructor Summary

RuleEngine(org.wso2.carbon.rule.common.RuleSet ruleSet, ClassLoader factClassLoader)
Creates a Rule Engine Object.

Method Summary

RuleSession	createSession(int type) creates a session to be used with a pirticular service invocation.
void	loadRuleBackendRuntime()

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleEngine

public RuleEngine(org.wso2.carbon.rule.common.RuleSet ruleSet,
                  ClassLoader factClassLoader)
           throws org.wso2.carbon.rule.common.exception.RuleConfigurationException

Creates a Rule Engine Object. Rule engine object is kept per mediator and per service. When creating the rule Engine it has to pass the Backe end runtime factory and the class loader to load the fact classes properly.

Parameters:

ruleSet - - rule set specified either in the web service descriptor file or rule mediator file.

factClassLoader - - class loader which other pojo classes may exists.

Throws:

org.wso2.carbon.rule.common.exception.RuleConfigurationException - - if there is a problem with the configuration

Method Detail

loadRuleBackendRuntime

public void loadRuleBackendRuntime()
                            throws org.wso2.carbon.rule.common.exception.RuleConfigurationException

Throws:

org.wso2.carbon.rule.common.exception.RuleConfigurationException

createSession

public RuleSession createSession(int type)
                          throws org.wso2.carbon.rule.common.exception.RuleRuntimeException

creates a session to be used with a pirticular service invocation.

Parameters:

type - - whther it is stateful or state less

Returns:

- session created

Throws:

org.wso2.carbon.rule.common.exception.RuleRuntimeException - - if problem occurs when creating session