org.jboss.byteman.rule.helper

Interface HelperAdapter

All Known Implementing Classes:

InterpretedHelper

public interface HelperAdapter

This interface defines the methods which need to be added to a helper class in order for it to plug in to the rule system. In the case of the default helper class, Helper, this interface is implemented by a pre-defined subclass, InterpretedHelper which interprets the rule parse tree. Given any user-supplied helper class the rule compiler can generate a HelperAdapter class which interprets the rule tree and invokes builtin methods using reflection. The compiler can also generate a HelperAdapter whose bind(), test() and fire() methods are compiled from bytecode derived from the parse trees of, respectively, the rule's event, condition and action. Bytecode compilation is applicable to rules which employ the default helper as well as rules which employ user-defined helpers.

Method Summary

Methods

Modifier and Type	Method and Description
void	execute(Object recipient, Object[] args)
Object	getAccessibleField(Object owner, int fieldIndex)
Object	getBinding(String name)
String	getName()
Object	invokeAccessibleMethod(Object target, Object[] args, int fieldIndex)
void	setAccessibleField(Object owner, Object value, int fieldIndex)
void	setBinding(String name, Object value)

Method Detail

execute

void execute(Object recipient,
           Object[] args)
             throws ExecuteException

Throws:

ExecuteException

setBinding

void setBinding(String name,
              Object value)

getBinding

Object getBinding(String name)

getName

String getName()

getAccessibleField

Object getAccessibleField(Object owner,
                        int fieldIndex)

setAccessibleField

void setAccessibleField(Object owner,
                      Object value,
                      int fieldIndex)

invokeAccessibleMethod

Object invokeAccessibleMethod(Object target,
                            Object[] args,
                            int fieldIndex)