public class TagAdapter extends java.lang.Object implements Tag
Because SimpleTag does not extend Tag, and because Tag.setParent() only accepts a Tag instance, a classic tag handler (one that implements Tag) cannot have a SimpleTag as its parent. To remedy this, a TagAdapter is created to wrap the SimpleTag parent, and the adapter is passed to setParent() instead. A classic Tag Handler can call getAdaptee() to retrieve the encapsulated SimpleTag instance.
EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE| Constructor and Description | 
|---|
| TagAdapter(SimpleTag adaptee)Creates a new TagAdapter that wraps the given SimpleTag and returns the
 parent tag when getParent() is called. | 
| Modifier and Type | Method and Description | 
|---|---|
| int | doEndTag()Must not be called. | 
| int | doStartTag()Must not be called. | 
| JspTag | getAdaptee()Gets the tag that is being adapted to the Tag interface. | 
| Tag | getParent()Returns the parent of this tag, which is always getAdaptee().getParent(). | 
| void | release()Must not be called. | 
| void | setPageContext(PageContext pc)Must not be called. | 
| void | setParent(Tag parentTag)Must not be called. | 
public TagAdapter(SimpleTag adaptee)
adaptee - The SimpleTag being adapted as a Tag.public void setPageContext(PageContext pc)
setPageContext in interface Tagpc - ignored.java.lang.UnsupportedOperationException - Must not be calledpublic void setParent(Tag parentTag)
public Tag getParent()
getParent in interface TagTagSupport.findAncestorWithClass(javax.servlet.jsp.tagext.Tag, java.lang.Class)public JspTag getAdaptee()
public int doStartTag()
               throws JspException
doStartTag in interface Tagjava.lang.UnsupportedOperationException - Must not be calledJspException - never thrownBodyTagpublic int doEndTag()
             throws JspException
doEndTag in interface Tagjava.lang.UnsupportedOperationException - Must not be calledJspException - never thrownCopyright © 2000-2020 Apache Software Foundation. All Rights Reserved.