org.apache.bsf.util

Class MethodUtils


public class MethodUtils
extends java.lang.Object

This file is a collection of reflection utilities for dealing with methods and constructors.
Authors:
Sanjiva Weerawarana
Joseph Kesselman

Method Summary

static Constructor
getConstructor(Class targetClass, Class[] argTypes)
Class.getConstructor() finds only the entry point (if any) _exactly_ matching the specified argument types.
static Method
getMethod(Class target, String methodName, Class[] argTypes, boolean isStaticReference)
static Method
getMethod(Object target, String methodName, Class[] argTypes)
Class.getMethod() finds only the entry point (if any) _exactly_ matching the specified argument types.

Method Details

getConstructor

public static Constructor getConstructor(Class targetClass,
                                         Class[] argTypes)
            throws SecurityException,
                   NoSuchMethodException
Class.getConstructor() finds only the entry point (if any) _exactly_ matching the specified argument types. Our implmentation can decide between several imperfect matches, using the same search algorithm as the Java compiler. Note that all constructors are static by definition, so isStaticReference is true.

getMethod

public static Method getMethod(Class target,
                               String methodName,
                               Class[] argTypes,
                               boolean isStaticReference)
            throws SecurityException,
                   NoSuchMethodException

getMethod

public static Method getMethod(Object target,
                               String methodName,
                               Class[] argTypes)
            throws SecurityException,
                   NoSuchMethodException
Class.getMethod() finds only the entry point (if any) _exactly_ matching the specified argument types. Our implmentation can decide between several imperfect matches, using the same search algorithm as the Java compiler. This version emulates the compiler behavior by allowing lookup to be performed against either a class or an instance -- classname.foo() must be a static method call, instance.foo() can invoke either static or instance methods.
Parameters:
target - object on which call is to be made
methodName - name of method I'm lookin' for
argTypes - array of argument types of method
Returns:
the desired method