Examples of org.apache.catalina.util.Enumerator

org.apache.catalina.util.Enumerator
Adapter class that wraps an Enumeration around a Java2 collection classes object Iterator so that existing APIs returning Enumerations can easily run on top of the new collections. Constructors are provided to easliy create such wrappers. @author Craig R. McClanahan @version $Revision: 466595 $ $Date: 2006-10-21 23:24:41 +0100 (Sat, 21 Oct 2006) $

   {
      if (!isValid())
         throw new IllegalStateException
            (sm.getString("clusteredSession.getAttributeNames.ise"));


      return (new Enumerator(getAttributesInternal().keySet(), true));
   }

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     * wrapped request.
     */
    public Enumeration getParameterNames() {


  parseParameters();
        return (new Enumerator(parameters.keySet()));


    }

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     * associated with this context.
     */
    public Enumeration getAttributeNames() {


        synchronized (attributes) {
            return new Enumerator(attributes.keySet(), true);
        }


    }

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     */
    public Enumeration getInitParameterNames() {


        mergeParameters();
        synchronized (parameters) {
           return (new Enumerator(parameters.keySet()));
        }


    }

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    /**
     * @deprecated As of Java Servlet API 2.1, with no direct replacement.
     */
    public Enumeration getServletNames() {
        return (new Enumerator(empty));
    }

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    /**
     * @deprecated As of Java Servlet API 2.1, with no direct replacement.
     */
    public Enumeration getServlets() {
        return (new Enumerator(empty));
    }

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    public Enumeration getAttributeNames() {


        if (!isValid())
            throw new IllegalStateException(sm
                    .getString("standardSession.getAttributeNames.ise"));
        return (new Enumerator(attributes.keySet(), true));
    }

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     *             must return an empty <code>Enumeration</code> and will be
     *             removed in a future version of the API.
     */
    public Enumeration getIds() {


        return (new Enumerator(dummy));


    }

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        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.getAttributeNames.ise"));


        return (new Enumerator(attributes.keySet(), true));


    }

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     *  This method must return an empty <code>Enumeration</code>
     *  and will be removed in a future version of the API.
     */
    public Enumeration getIds() {


        return (new Enumerator(dummy));


    }

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