javax.servlet.jsp.jstl.tlv

Class PermittedTaglibsTLV

java.lang.Object

javax.servlet.jsp.tagext.TagLibraryValidator

javax.servlet.jsp.jstl.tlv.PermittedTaglibsTLV

public class PermittedTaglibsTLV
extends TagLibraryValidator

A TagLibraryValidator class to allow a TLD to restrict what taglibs (in addition to itself) may be imported on a page where it's used.

This TLV supports the following initialization parameter:

• permittedTaglibs: A whitespace-separated list of URIs corresponding to tag libraries permitted to be imported on the page in addition to the tag library that references PermittedTaglibsTLV (which is allowed implicitly).

This implementation only detects tag libraries declared on the <jsp:root> element, including libraries in regular JSP files or JSP Documents with a specific <jsp:root>. It does not detect libraries declared on other elements as supported by JSP 2.0.

Author:

Shawn Bayern

Constructor Summary

Constructors

Constructor and Description
PermittedTaglibsTLV()

Method Summary

Modifier and Type	Method and Description
void	setInitParameters(Map<String,Object> initParams) Set the init data in the TLD for this validator.
ValidationMessage[]	validate(String prefix, String uri, PageData page) Validate a JSP page.

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

getInitParameters, release

Methods inherited from class java.lang.Object

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

Constructor Detail

PermittedTaglibsTLV

public PermittedTaglibsTLV()

Method Detail

setInitParameters

public void setInitParameters(Map<String,Object> initParams)

Description copied from class: TagLibraryValidator

Set the init data in the TLD for this validator. Parameter names are keys, and parameter values are the values.

Overrides:

setInitParameters in class TagLibraryValidator

Parameters:

initParams - A Map describing the init parameters

validate

public ValidationMessage[] validate(String prefix,
                                    String uri,
                                    PageData page)

Description copied from class: TagLibraryValidator

Validate a JSP page. This will get invoked once per unique tag library URI in the XML view. This method will return null if the page is valid; otherwise the method should return an array of ValidationMessage objects. An array of length zero is also interpreted as no errors.

Overrides:

validate in class TagLibraryValidator

Parameters:

prefix - the first prefix with which the tag library is associated, in the XML view. Note that some tags may use a different prefix if the namespace is redefined.

uri - the tag library's unique identifier

page - the JspData page object

Returns:

A null object, or zero length array if no errors, an array of ValidationMessages otherwise.