org.apache.strutsel.taglib.logic
Class ELMatchSupport

java.lang.Object
  org.apache.strutsel.taglib.logic.ELMatchSupport

class ELMatchSupport

extends java.lang.Object

This class is used as a helper class for both the org.apache.strutsel.taglib.logic.ELMatchTag and org.apache.strutsel.taglib.logic.ELNotMatchTag classes. It's condition method encapsulates the common logic needed to examine the location attribute to determine how to do the comparison.

Constructor Summary

(package private)

ELMatchSupport()

Method Summary

static boolean

condition(boolean desired, java.lang.String expr, java.lang.String value, java.lang.String location, org.apache.struts.util.MessageResources messages, javax.servlet.jsp.PageContext pageContext) Performs a comparison of an expression and a value, with an optional location specifier in the expression (start or end).

Methods inherited from class java.lang.Object

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

Constructor Detail

ELMatchSupport

ELMatchSupport()

Method Detail

condition

public static boolean condition(boolean desired,
                                java.lang.String expr,
                                java.lang.String value,
                                java.lang.String location,
                                org.apache.struts.util.MessageResources messages,
                                javax.servlet.jsp.PageContext pageContext)
                         throws javax.servlet.jsp.JspException

Performs a comparison of an expression and a value, with an optional location specifier in the expression (start or end).

Parameters:

desired - Indication of whether the "truth" value of the comparison is whether the expression and value are equal, or not equal.

expr - Expression to test against a value.

value - Value to test against an expression.

location - if set, is "start" or "end" to indicate to look at the start or end of the expression for the value. If null, look anywhere in the expression.

messages - MessageResources object to reference for error message text.

pageContext - used to save exception information, if needed.

Returns:

true if comparison result equals desired value, false otherwise.

Throws:

javax.servlet.jsp.JspException