org.apache.commons.jexl.util.introspection

Class MethodMap

public class MethodMap extends Object

Since: 1.0

Version: $Id: MethodMap.java 398495 2006-05-01 01:33:43Z dion $

Nested Class Summary
static classMethodMap.AmbiguousException
simple distinguishable exception, used when we run across ambiguous overloading.
Field Summary
protected MapmethodByNameMap
Keep track of all methods with the same name.
Method Summary
voidadd(Method method)
Add a method to a list of methods by name.
Methodfind(String methodName, Object[] args)

Find a method.

Listget(String key)
Return a list of methods with the same name.

Field Detail

methodByNameMap

protected Map methodByNameMap
Keep track of all methods with the same name.

Method Detail

add

public void add(Method method)
Add a method to a list of methods by name. For a particular class we are keeping track of all the methods with the same name.

Parameters: method the method.

find

public Method find(String methodName, Object[] args)

Find a method. Attempts to find the most specific applicable method using the algorithm described in the JLS section 15.12.2 (with the exception that it can't distinguish a primitive type argument from an object type argument, since in reflection primitive type arguments are represented by their object counterparts, so for an argument of type (say) java.lang.Integer, it will not be able to decide between a method that takes int and a method that takes java.lang.Integer as a parameter.

This turns out to be a relatively rare case where this is needed - however, functionality like this is needed.

Parameters: methodName name of method args the actual arguments with which the method is called

Returns: the most specific applicable method, or null if no method is applicable.

Throws: AmbiguousException if there is more than one maximally specific applicable method

get

public List get(String key)
Return a list of methods with the same name.

Parameters: key The method name.

Returns: List list of methods

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