javax.el

Class FunctionMapper

Contents

  • 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.

    Since:
    JSP 2.1

    • 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.

      • mapFunction

        public void mapFunction(String prefix,
                        String localName,
                        Method meth)
        Adds a static method that can be used as a function.
        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()}.
        meth - The static method that is to be invoked, when the function is referenced. The null value causes the function to be removed from the map.
        Since:
        EL 3.0

Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/el/functionmapper.html

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References

  1. View the html document Language of the document:fr Manuel PHP : https://docs.oracle.com/en/java/, Class FunctionMapper

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