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 (System.getSecurityManager() != null){
            return (Enumeration)AccessController.doPrivileged(
                new PrivilegedAction(){


                    public Object run(){
                        return (new Enumerator(empty)); 
                    }
                }
            );
        } else {
            return (new Enumerator(empty));
        }
    }

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        if (System.getSecurityManager() != null){
            return (Enumeration)AccessController.doPrivileged(
                new PrivilegedAction(){


                    public Object run(){
                        return (new Enumerator(empty)); 
                    }
                }
            );
        } else {
            return (new Enumerator(empty));
        }        
    }

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    /**
     * Return the names of all request attributes for this Request, or an
     * empty <code>Enumeration</code> if there are none.
     */
    public Enumeration getAttributeNames() {
        return (new Enumerator(attributes.keySet()));
    }

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        if (!localesParsed)
            parseLocales();


        if (locales.size() > 0)
            return (new Enumerator(locales));
        ArrayList results = new ArrayList();
        results.add(defaultLocale);
        return (new Enumerator(results));


    }

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     * request.
     */
    public Enumeration getAttributeNames() {


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


    }

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


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


    }

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     * Return an enumeration of the names of the context attributes
     * associated with this context.
     */
    public Enumeration getAttributeNames() {


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


    }

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     * empty enumeration if the context has no initialization parameters.
     */
    public Enumeration getInitParameterNames() {


        mergeParameters();
        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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