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  /*
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   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
   * may not use this file except in compliance with the License.  You can
  * obtain a copy of the License at
  * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
  * or packager/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
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  * exception as provided by Oracle in the GPL Version 2 section of the License
  * file that accompanied this code.
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  * Modifications:
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  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
 
 package javax.faces.webapp;
 
 

Tag implementation that adds an attribute with a specified name and String value to the component whose tag it is nested inside, if the component does not already contain an attribute with the same name. This tag creates no output to the page currently being created.

Deprecated:
The Faces implementation must now provide the implementation for this class.
 
 
 public class AttributeTag extends TagSupport {
 
 
     // ---------------------------------------------------------- Static Members
 
 
     private static final long serialVersionUID = -7782950243436672334L;
 
 
     // ------------------------------------------------------------- Attributes
 

    

The name of the attribute to be created, if not already present.

 
     private String name = null;


    

Set the attribute name.

Parameters:
name The new attribute name
 
     public void setName(String name) {
 
         this. = name;
 
     }


    

The value to be associated with this attribute, if it is created.

 
     private String value = null;



    

Set the attribute value.

Parameters:
value The new attribute value
    public void setValue(String value) {
        this. = value;
    }
    // --------------------------------------------------------- Public Methods


    

Register the specified attribute name and value with the javax.faces.component.UIComponent instance associated with our most immediately surrounding UIComponentTag instance, if this javax.faces.component.UIComponent does not already have a value for the specified attribute name.

Throws:
javax.servlet.jsp.JspException if a JSP error occurs
    public int doStartTag() throws JspException {
        // Locate our parent UIComponentTag
        UIComponentClassicTagBase tag =
             UIComponentClassicTagBase.getParentUIComponentClassicTagBase();
        if (tag == null) { // PENDING - i18n
            throw new JspException("Not nested in a UIComponentTag");
        }
        // Add this attribute if it is not already defined
        UIComponent component = tag.getComponentInstance();
        if (component == null) { // PENDING - i18n
            throw new JspException("No component associated with UIComponentTag");
        }
        FacesContext context = FacesContext.getCurrentInstance();
        ExpressionFactory exprFactory =
            context.getApplication().getExpressionFactory();
        ELContext elContext = context.getELContext();
        String nameVal = (String
                  exprFactory.createValueExpression(elContextString.class)
                      .getValue(elContext);
        Object valueVal =
                exprFactory.createValueExpression(elContextObject.class)
                    .getValue(elContext);
        if (component.getAttributes().get(nameVal) == null) {
            component.getAttributes().put(nameValvalueVal);
        }
        return ();
    }
    public int doEndTag() throws JspException {
	this.release();
	return ();
    }

    
    

Release references to any acquired resources.

    public void release() {
        this. = null;
        this. = null;
    }
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