jsf - Programmatically register taglib reference -

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is there way programmatically, in java code, register custom taglib reference?
using jsf 1.2_09, rich faces 3.3.3, jsf-facelets 1.1.14.

specifically:

in code, jsf expression language used job us, concatenation of 2 results in 1 field or similar stuff..

facescontext ctx = facescontext.getcurrentinstance(); application app = ctx.getapplication(); expressionfactory ef = app.getexpressionfactory(); elcontext elcontext = ctx.getelcontext(); valueexpression valueexpression = new overridevalueexpression(singleresult.getclass(), singleresult); elcontext.getvariablemapper().setvariable("row", valueexpression);  (int = 0; < jsfdisplayvalue.size(); i++){     object value = ef.createvalueexpression(elcontext, jsfdisplayvalue.get(i), object.class).getvalue(ctx.getelcontext()); //do value... }

e.g., elements of jsfdisplayvalue can be:
"#{row.name} #{row.surname}", "#{row.age}", "#{tagfoo:foofunction(row.age)}"...
problem occurs when expression contains function, highlighted, tagfoo:foofunction.

stack trace:

javax.el.elexception: function 'tagfoo:foofunction' not found     @ org.apache.el.lang.expressionbuilder.visit(expressionbuilder.java:198)     @ org.apache.el.parser.simplenode.accept(simplenode.java:147)     @ org.apache.el.lang.expressionbuilder.prepare(expressionbuilder.java:155)     @ org.apache.el.lang.expressionbuilder.build(expressionbuilder.java:173)     @ org.apache.el.lang.expressionbuilder.createvalueexpression(expressionbuilder.java:217)     @ org.apache.el.expressionfactoryimpl.createvalueexpression(expressionfactoryimpl.java:67)

elcontext doesn't recognize custom function, , can't resolve function because tagfoo unknown elcontext. how can register taglib reference in java class, elcontext can recognise custom functions?

on jsf page, this:

<jsp:root version="2.0" xmlns:jsp="http://java.sun.com/jsp/page" xmlns:tagfoo="http://tagfoo.org/tags">

p.s.
custom functions working on jsf pages.

i'm sorry i'm bit late, stumbled upon same problem today.

inspecting elcontext , functionmapper instances, have seen custom implementations of standard abstract class.

as want keep code portable, decided not involved writing code specific implementation, , abstract class defines read contract , omits write side of things, wrote custom functionmapper. here meaningfull code:

public void register(string prefix, string function, method method) {     register.put(prefix + ":" + function, method); }  @override public method resolvefunction(string prefix, string localname) {     if (register.containskey(prefix + ":" + localname)) {         return register.get(prefix + ":" + localname);     }     (functionmapper : delegates) {         final method current = it.resolvefunction(prefix, localname);         if (current != null) {             return current;         }     }     return null; }

by wrapping standard functionmapper, can add own functions , keep standard environment ok. in case, had write custom elcontext implementation too, basicaly clones default elcontext , wraps functionmapper.

i'm pretty happy results, hope helps.


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