org.apache.struts.taglib.logic
Class PresentTag
java.lang.Object
javax.servlet.jsp.tagext.TagSupport
org.apache.struts.taglib.logic.ConditionalTagBase
org.apache.struts.taglib.logic.PresentTag
- All Implemented Interfaces:
- java.io.Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.Tag
- Direct Known Subclasses:
- ELPresentTag, NestedPresentTag, NotPresentTag
public class PresentTag
- extends ConditionalTagBase
Evalute the nested body content of this tag if the specified value is
present for this request.
- Version:
- $Rev: 471754 $ $Date: 2004-10-16 12:38:42 -0400 (Sat, 16 Oct 2004)
$
- See Also:
- Serialized Form
Fields inherited from class javax.servlet.jsp.tagext.TagSupport |
id, pageContext |
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 |
Method Summary |
protected boolean |
condition()
Evaluate the condition that is being tested by this particular tag, and
return true if the nested body content of this tag should
be evaluated, or false if it should be skipped. |
protected boolean |
condition(boolean desired)
Evaluate the condition that is being tested by this particular tag, and
return true if the nested body content of this tag should
be evaluated, or false if it should be skipped. |
protected boolean |
isBeanPresent()
Returns true if the bean given in the name attribute is
found. |
protected boolean |
isCookiePresent(javax.servlet.http.HttpServletRequest request)
Returns true if the cookie is present in the request. |
Methods inherited from class org.apache.struts.taglib.logic.ConditionalTagBase |
doEndTag, doStartTag, getCookie, getHeader, getName, getParameter, getProperty, getRole, getScope, getUser, release, setCookie, setHeader, setName, setParameter, setProperty, setRole, setScope, setUser |
Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
doAfterBody, 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 |
ROLE_DELIMITER
public static final java.lang.String ROLE_DELIMITER
- See Also:
- Constant Field Values
PresentTag
public PresentTag()
condition
protected boolean condition()
throws javax.servlet.jsp.JspException
- Evaluate the condition that is being tested by this particular tag, and
return
true
if the nested body content of this tag should
be evaluated, or false
if it should be skipped. This
method must be implemented by concrete subclasses.
- Specified by:
condition
in class ConditionalTagBase
- Throws:
javax.servlet.jsp.JspException
- if a JSP exception occurs
condition
protected boolean condition(boolean desired)
throws javax.servlet.jsp.JspException
- Evaluate the condition that is being tested by this particular tag, and
return
true
if the nested body content of this tag should
be evaluated, or false
if it should be skipped. This
method must be implemented by concrete subclasses.
- Parameters:
desired
- Desired outcome for a true result
- Throws:
javax.servlet.jsp.JspException
- if a JSP exception occurs
isBeanPresent
protected boolean isBeanPresent()
- Returns true if the bean given in the
name
attribute is
found.
- Since:
- Struts 1.2
isCookiePresent
protected boolean isCookiePresent(javax.servlet.http.HttpServletRequest request)
- Returns true if the cookie is present in the request.
- Since:
- Struts 1.2
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