org.apache.wiki.tags
Class PermissionTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      org.apache.wiki.tags.WikiTagBase
          org.apache.wiki.tags.PermissionTag

All Implemented Interfaces:

Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally

public class PermissionTag
extends WikiTagBase

Tells whether the user in the current wiki context possesses a particular permission. The permission is typically a PagePermission (e.g., "edit", "view", "delete", "comment", "upload"). It may also be a wiki-wide WikiPermission ("createPages", "createGroups", "editProfile", "editPreferences", "login") or the administrator permission ("allPermission"). GroupPermissions (e.g., "viewGroup", "editGroup", "deleteGroup").

Since 2.6, it is possible to list several permissions or use negative permissions, e.g.

     <wiki:Permission permission="edit|rename|view">
        You have edit, rename, or  view permissions!
     </wiki:Permission>
  

or

     <wiki:Permission permission="!upload">
        You do not have permission to upload!
     </wiki:Permission>
  

Since:

2.0

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.wiki.tags.WikiTagBase

ATTR_CONTEXT, m_wikiContext

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

Constructor Summary

PermissionTag()

Method Summary

int	doWikiStartTag() Initializes the tag.
void	initTag() Initializes the tag.
void	setPermission(String permission) Sets the permissions to look for (case sensitive).

Methods inherited from class org.apache.wiki.tags.WikiTagBase

doCatch, doEndTag, doFinally, doStartTag, setId, setPageContext

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

PermissionTag

public PermissionTag()

Method Detail

initTag

public void initTag()

Initializes the tag.

Overrides:

initTag in class WikiTagBase

setPermission

public void setPermission(String permission)

Sets the permissions to look for (case sensitive). See above for the format.

Parameters:

permission - A list of permissions

doWikiStartTag

public final int doWikiStartTag()
                         throws IOException

Initializes the tag.

Specified by:

doWikiStartTag in class WikiTagBase

Returns:

the result of the tag: SKIP_BODY or EVAL_BODY_CONTINUE

Throws:

IOException - this exception will never be thrown