File	Doc	Category	Size	Date	Package
TagAdapter.java	API Doc	Glassfish v2 API	5285	Wed Dec 07 16:14:08 GMT 2005	javax.servlet.jsp.tagext

TagAdapter

• java.lang.Object

Fields Summary
private SimpleTag	simpleTagAdaptee The simple tag that's being adapted.
private Tag	parent The parent, of this tag, converted (if necessary) to be of type Tag.
private boolean	parentDetermined

Constructors Summary
public TagAdapter(SimpleTag adaptee) Creates a new TagAdapter that wraps the given SimpleTag and returns the parent tag when getParent() is called. param adaptee The SimpleTag being adapted as a Tag. if( adaptee == null ) { // Cannot wrap a null adaptee. throw new IllegalArgumentException(); } this.simpleTagAdaptee = adaptee;

Methods Summary
public int	doEndTag() Must not be called. return always throws UnsupportedOperationException throws UnsupportedOperationException Must not be called throws JspException never thrown throw new UnsupportedOperationException( "Illegal to invoke doEndTag() on TagAdapter wrapper" );
public int	doStartTag() Must not be called. return always throws UnsupportedOperationException throws UnsupportedOperationException Must not be called throws JspException never thrown throw new UnsupportedOperationException( "Illegal to invoke doStartTag() on TagAdapter wrapper" );
public JspTag	getAdaptee() Gets the tag that is being adapted to the Tag interface. This should be an instance of SimpleTag in JSP 2.0, but room is left for other kinds of tags in future spec versions. return the tag that is being adapted return this.simpleTagAdaptee;
public Tag	getParent() Returns the parent of this tag, which is always getAdaptee().getParent(). This will either be the enclosing Tag (if getAdaptee().getParent() implements Tag), or an adapter to the enclosing Tag (if getAdaptee().getParent() does not implement Tag). return The parent of the tag being adapted. if (!parentDetermined) { JspTag adapteeParent = simpleTagAdaptee.getParent(); if (adapteeParent != null) { if (adapteeParent instanceof Tag) { this.parent = (Tag) adapteeParent; } else { // Must be SimpleTag - no other types defined. this.parent = new TagAdapter((SimpleTag) adapteeParent); } } parentDetermined = true; } return this.parent;
public void	release() Must not be called. throws UnsupportedOperationException Must not be called throw new UnsupportedOperationException( "Illegal to invoke release() on TagAdapter wrapper" );
public void	setPageContext(PageContext pc) Must not be called. param pc ignored. throws UnsupportedOperationException Must not be called throw new UnsupportedOperationException( "Illegal to invoke setPageContext() on TagAdapter wrapper" );
public void	setParent(Tag parentTag) Must not be called. The parent of this tag is always getAdaptee().getParent(). param parentTag ignored. throws UnsupportedOperationException Must not be called. throw new UnsupportedOperationException( "Illegal to invoke setParent() on TagAdapter wrapper" );