org.apache.commons.jxpath.util
Class MethodLookupUtils

java.lang.Object
  org.apache.commons.jxpath.util.MethodLookupUtils

public class MethodLookupUtils
extends java.lang.Object

Method lookup utilities, which find static and non-static methods as well as constructors based on a name and list of parameters.

Version:

$Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $

Author:

Dmitri Plotnikov

Field Summary

private static int	APPROXIMATE_MATCH
private static int	EXACT_MATCH
private static int	NO_MATCH

Constructor Summary

MethodLookupUtils()

Method Summary

static java.lang.reflect.Constructor	lookupConstructor(java.lang.Class targetClass, java.lang.Object[] parameters) Look up a constructor.
static java.lang.reflect.Method	lookupMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters) Look up a method.
static java.lang.reflect.Method	lookupStaticMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters) Look up a static method.
private static int	matchParameterTypes(java.lang.Class[] types, java.lang.Object[] parameters) Return a match code of objects to types.
private static int	matchType(java.lang.Class expected, java.lang.Object object) Return a match code between an object and type.

Methods inherited from class java.lang.Object

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

Field Detail

NO_MATCH

private static final int NO_MATCH

See Also:

Constant Field Values

APPROXIMATE_MATCH

private static final int APPROXIMATE_MATCH

See Also:

Constant Field Values

EXACT_MATCH

private static final int EXACT_MATCH

See Also:

Constant Field Values

Constructor Detail

MethodLookupUtils

public MethodLookupUtils()

Method Detail

lookupConstructor

public static java.lang.reflect.Constructor lookupConstructor(java.lang.Class targetClass,
                                                              java.lang.Object[] parameters)

Look up a constructor.

Parameters:

targetClass - the class constructed

parameters - arguments

Returns:

Constructor found if any.

lookupStaticMethod

public static java.lang.reflect.Method lookupStaticMethod(java.lang.Class targetClass,
                                                          java.lang.String name,
                                                          java.lang.Object[] parameters)

Look up a static method.

Parameters:

targetClass - the owning class

name - method name

parameters - method parameters

Returns:

Method found if any

lookupMethod

public static java.lang.reflect.Method lookupMethod(java.lang.Class targetClass,
                                                    java.lang.String name,
                                                    java.lang.Object[] parameters)

Look up a method.

Parameters:

targetClass - owning class

name - method name

parameters - method parameters

Returns:

Method found if any

matchParameterTypes

private static int matchParameterTypes(java.lang.Class[] types,
                                       java.lang.Object[] parameters)

Return a match code of objects to types.

Parameters:

types - Class[] of expected types

parameters - Object[] to attempt to match

Returns:

int code

matchType

private static int matchType(java.lang.Class expected,
                             java.lang.Object object)

Return a match code between an object and type.

Parameters:

expected - class to test

object - object to test

Returns:

int code