org.apache.jasper.compiler: public class: ELFunctionMapper

org.apache.jasper.compiler
public class: ELFunctionMapper [javadoc | source]

java.lang.Object
   org.apache.jasper.compiler.ELFunctionMapper

This class generates functions mappers for the EL expressions in the page. Instead of a global mapper, a mapper is used for ecah call to EL evaluator, thus avoiding the prefix overlapping and redefinition issues.

author: Kin-man - Chung

Nested Class Summary:
class	ELFunctionMapper.ELFunctionVisitor	A visitor for the page. The places where EL is allowed are scanned for functions, and if found functions mappers are created.

Field Summary
StringBuffer	ds
StringBuffer	ss

Method from org.apache.jasper.compiler.ELFunctionMapper Summary:
map

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.jasper.compiler.ELFunctionMapper Detail:
public static void map(Compiler compiler, Node.Nodes page) throws JasperException { // Contains declarations of the functions mappers. ELFunctionMapper map = new ELFunctionMapper(); map.ds = new StringBuffer(); map.ss = new StringBuffer(); page.visit(map.new ELFunctionVisitor()); // Append the declarations to the root node String ds = map.ds.toString(); if (ds.length() > 0) { Node root = page.getRoot(); new Node.Declaration(map.ss.toString(), null, root); new Node.Declaration("static {\n" + ds + "}\n", null, root); } } Creates the functions mappers for all EL expressions in the JSP page.

Method from org.apache.jasper.compiler.ELFunctionMapper Detail:

 public static  void map(Compiler compiler,
    Node.Nodes page) throws JasperException {
  // Contains declarations of the functions mappers.
        ELFunctionMapper map = new ELFunctionMapper();
        map.ds = new StringBuffer();
        map.ss = new StringBuffer();
        page.visit(map.new ELFunctionVisitor());
        // Append the declarations to the root node
        String ds = map.ds.toString();
        if (ds.length()  > 0) {
            Node root = page.getRoot();
            new Node.Declaration(map.ss.toString(), null, root);
            new Node.Declaration("static {\n" + ds + "}\n", null, root);
        }
}

Creates the functions mappers for all EL expressions in the JSP page.