org.displaytag.tags
Class TemplateTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      javax.servlet.jsp.tagext.BodyTagSupport
          org.displaytag.tags.TemplateTag

All Implemented Interfaces:

java.io.Serializable, javax.servlet.jsp.tagext.BodyTag, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:

HtmlTableTag

public abstract class TemplateTag
extends javax.servlet.jsp.tagext.BodyTagSupport

Base template class.

Version:

$Revision: 1081 $ ($Author: fgiust $)

Author:

bgsmith, Fabrizio Giustina

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.servlet.jsp.tagext.BodyTagSupport

bodyContent

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

id, pageContext

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

EVAL_BODY_BUFFERED, EVAL_BODY_TAG

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

TemplateTag()

Method Summary

protected java.lang.Object

evaluateExpression(java.lang.String expression) evaluate an expression in a way similar to LE in jstl.

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

doAfterBody, doEndTag, doInitBody, doStartTag, getBodyContent, getPreviousOut, release, setBodyContent

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

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

Methods inherited from class java.lang.Object

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

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

getParent, setPageContext, setParent

Constructor Detail

TemplateTag

public TemplateTag()

Method Detail

evaluateExpression

protected java.lang.Object evaluateExpression(java.lang.String expression)
                                       throws ObjectLookupException

evaluate an expression in a way similar to LE in jstl.

the first token is supposed to be an object in the page scope (default scope) or one of the following:

• pageScope
• requestScope
• sessionScope
• applicationScope

Tokens after the object name are interpreted as javabean properties (accessed through getters), mapped or indexed properties, using the jakarta common-beans library

Parameters:

expression - expression to evaluate

Returns:

Object result

Throws:

ObjectLookupException - if unable to get a bean using the given expression