PermittedTaglibsTLV (Jakarta EE Platform API)

java.lang.Object
- jakarta.servlet.jsp.tagext.TagLibraryValidator
- - jakarta.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).
Author:

Shawn Bayern

Constructor Summary

Constructors
Constructor Description

PermittedTaglibsTLV()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`release()`	Release any data kept by this instance for validation purposes.
`ValidationMessage[]`	`validate(String prefix, String uri, PageData page)`	Validate a JSP page.

Methods inherited from class jakarta.servlet.jsp.tagext.TagLibraryValidator
getInitParameters, setInitParameters

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
  - release
```
public void release()
```
    Description copied from class: TagLibraryValidator
    
    Release any data kept by this instance for validation purposes.
    
    Overrides:
    
    release in class TagLibraryValidator
  - 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.