com.taggercat.tags
Class TCIfTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      com.taggercat.tags.AbstractExpEvalTag
          com.taggercat.tags.TCIfTag

All Implemented Interfaces:

com.taggercat.el.ELPropertyResolver, java.io.Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:

TCIfThenElseTag

public class TCIfTag
extends AbstractExpEvalTag

This tag evaluates an expression and includes the body of the tag if the expression evaluates to true.

This tag functions the same as the JSTL tag of the same name. The difference is that it uses the Tagger Cat EL.

The test attribute is not wrapped in ${ and } delimiters.

If a var and scope attribute are set, then the result is also added as an attribute to that scope object. The scope variable is set even if the expression evaluates to false.

Tag Attributes

1. test the expression to be evaluated
2. var (optional) the variable name
3. scope (optional) the scope to place the results on. The scope can be one of:

 page - default if not specified
 session
 request
 application
 

See Also:

Serialized Form

Field Summary

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

TCIfTag()

Method Summary

int	doEndTag() Process the end tag.
int	doStartTag() Process the start tag for this instance.
boolean	isConditionTrue() Returns the result of the expression.
void	setFormat(java.lang.String format) Sets the format for displaying the results.
void	setTest(java.lang.String test) Sets the expression string.

Methods inherited from class com.taggercat.tags.AbstractExpEvalTag

getModel, resolveProperty, setScope, setValue, setVar

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

TCIfTag

public TCIfTag()

Method Detail

doEndTag

public int doEndTag()
             throws javax.servlet.jsp.JspException

Process the end tag. This method will be called on all Tag objects. All instance state associated with this instance must be reset.

Specified by:

doEndTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doEndTag in class AbstractExpEvalTag

Throws:

javax.servlet.jsp.JspException

Returns:

EVAL_BODY_INCLUDE if the tag wants to process

doStartTag

public int doStartTag()
               throws javax.servlet.jsp.JspException

Process the start tag for this instance. The doStartTag() method assumes that all setter methods have been invoked before. When this method is invoked, the body has not yet been invoked.

Specified by:

doStartTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doStartTag in class AbstractExpEvalTag

Throws:

javax.servlet.jsp.JspTagException

javax.servlet.jsp.JspException

Returns:

EVAL_BODY_INCLUDE if the tag wants to process body, SKIP_BODY if it does not want to process it.

isConditionTrue

public boolean isConditionTrue()

Returns the result of the expression.

Returns:

the boolean result of the expression

setFormat

public void setFormat(java.lang.String format)

Sets the format for displaying the results.

Parameters:

format - the format string value

setTest

public void setTest(java.lang.String test)

Sets the expression string.

Parameters:

test - the expression string