JavaServer Pages Pocket Reference

Name

TagData Class

Class name:

javax.servlet.jsp.tagext.TagData

Extends:

None

Implements:

Cloneable

Implemented by:

Internal container-dependent class. Most containers use the reference implementation of the class (developed in the Apache Jakarta project).

Description

TagData instances are created by the web container during the translation phase. They provide information about the attribute values specified for a custom action to the TagExtraInfo subclass for the corresponding tag handler, if any.

Constructors

public TagData(Object[][] atts)

Creates a new instance with the attribute name/value pairs specified by the Object[][]. Element 0 of each Object[] contains the name; element 1 contains the value or REQUEST_TIME_VALUE (if the attribute value is defined as a request-time value, or JSP expression).

public TagData(java.util.Hashtable attrs)

Creates a new instance with the attribute name/value pairs specified by the Hashtable.

Methods

public Object getAttribute(String attName)

Returns the specified attribute value as a String or as the REQUEST_TIME_VALUE object (if the attribute value is defined as a request-time value, or JSP expression).

public String getAttributeString(String attName)

Returns the specified attribute value as a String. A ClassCastException is thrown if the attribute value is defined as a request-time value (a JSP expression).

public String getId()

Returns the attribute named id as a String, or null if it is not found.

public void setAttribute(String attName, ...