net.sf.navigator.taglib.el
Class ExpressionEvaluator

java.lang.Object
  net.sf.navigator.taglib.el.ExpressionEvaluator

public class ExpressionEvaluator
extends Object

Utility class to help with the evaluation of JSTL Expression Language. It mainly encapsulates the calls to ExpressionEvaluationManager to ease the use of this class.

Constructor Summary

ExpressionEvaluator(javax.servlet.jsp.tagext.Tag tag, javax.servlet.jsp.PageContext context)

Method Summary

Object	eval(String attrName, String attrValue, Class returnClass) Evaluate expression in attrValue.
boolean	evalBoolean(String attrName, String attrValue)
int	evalInt(String attrName, String attrValue)
long	evalLong(String attrName, String attrValue)
String	evalString(String attrName, String attrValue)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionEvaluator

public ExpressionEvaluator(javax.servlet.jsp.tagext.Tag tag,
                           javax.servlet.jsp.PageContext context)

Method Detail

eval

public Object eval(String attrName,
                   String attrValue,
                   Class returnClass)
            throws javax.servlet.jsp.JspException

Evaluate expression in attrValue.

Returns:

evaluate expression of attrValue, null if attrValue is null.

Throws:

javax.servlet.jsp.JspException

evalString

public String evalString(String attrName,
                         String attrValue)
                  throws javax.servlet.jsp.JspException

Throws:

javax.servlet.jsp.JspException

evalBoolean

public boolean evalBoolean(String attrName,
                           String attrValue)
                    throws javax.servlet.jsp.JspException

Throws:

javax.servlet.jsp.JspException

evalLong

public long evalLong(String attrName,
                     String attrValue)
              throws javax.servlet.jsp.JspException

Throws:

javax.servlet.jsp.JspException

evalInt

public int evalInt(String attrName,
                   String attrValue)
            throws javax.servlet.jsp.JspException

Throws:

javax.servlet.jsp.JspException