Package org.apache.jasper.compiler

Interface ELInterpreter

  • All Known Implementing Classes:
    ELInterpreterFactory.DefaultELInterpreter, ELInterpreterTagSetters
    public interface ELInterpreter
    Defines the interface for the expression language interpreter. This allows users to provide custom EL interpreter implementations that can optimise EL processing for an application by , for example, performing code generation for simple expressions.

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.lang.String interpreterCall​(JspCompilationContext context, boolean isTagFile, java.lang.String expression, java.lang.Class<?> expectedType, java.lang.String fnmapvar)
      Returns the string representing the code that will be inserted into the servlet generated for JSP.

    • Method Detail

      • interpreterCall

        java.lang.String interpreterCall​(JspCompilationContext context,
                                 boolean isTagFile,
                                 java.lang.String expression,
                                 java.lang.Class<?> expectedType,
                                 java.lang.String fnmapvar)
        Returns the string representing the code that will be inserted into the servlet generated for JSP. The default implementation creates a call to PageContextImpl.proprietaryEvaluate( String, Class, jakarta.servlet.jsp.PageContext, org.apache.jasper.runtime.ProtectedFunctionMapper) but other implementations may produce more optimised code.
        Parameters:
        context - The compilation context
        isTagFile - true if in a tag file rather than a JSP
        expression - a String containing zero or more "${}" expressions
        expectedType - the expected type of the interpreted result
        fnmapvar - Variable pointing to a function map.
        Returns:
        a String representing a call to the EL interpreter.