org.camunda.bpm.engine.impl.javax.el
Class FunctionMapper

java.lang.Object
  org.camunda.bpm.engine.impl.javax.el.FunctionMapper

Direct Known Subclasses:

CommandContextFunctionMapper, CompositeFunctionMapper, DateTimeFunctionMapper

public abstract class FunctionMapper
extends Object

The interface to a map between EL function names and methods. A FunctionMapper maps ${prefix:name()} style functions to a static method that can execute that function.

Constructor Summary

FunctionMapper()

Method Summary

abstract Method

resolveFunction(String prefix, String localName) Resolves the specified prefix and local name into a java.lang.Method.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionMapper

public FunctionMapper()

Method Detail

resolveFunction

public abstract Method resolveFunction(String prefix,
                                       String localName)

Resolves the specified prefix and local name into a java.lang.Method. Returns null if no function could be found that matches the given prefix and local name.

Parameters:

prefix - the prefix of the function, or "" if no prefix. For example, "fn" in ${fn:method()}, or "" in ${method()}.

localName - the short name of the function. For example, "method" in ${fn:method()}.

Returns:

the static method to invoke, or null if no match was found.