Class MethodLookupUtils

java.lang.Object

org.apache.commons.jxpath.util.MethodLookupUtils

public class MethodLookupUtils
extends 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

Fields

Modifier and Type	Field	Description
private static final int	APPROXIMATE_MATCH
private static final int	EXACT_MATCH
private static final int	NO_MATCH

Constructor Summary

Constructors

Constructor	Description
MethodLookupUtils()

Method Summary

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

Methods inherited from class Object

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

Field Details

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 Details

MethodLookupUtils

public MethodLookupUtils()

Method Details

lookupConstructor

public static Constructor lookupConstructor(Class targetClass,
 Object[] parameters)

Look up a constructor.

Parameters:

targetClass - the class constructed

parameters - arguments

Returns:

Constructor found if any.

lookupStaticMethod

public static Method lookupStaticMethod(Class targetClass,
 String name,
 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 Method lookupMethod(Class targetClass,
 String name,
 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(Class[] types,
 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(Class expected,
 Object object)

Return a match code between an object and type.

Parameters:

expected - class to test

object - object to test

Returns:

int code