Example usage for java.util Enumeration Enumeration

Introduction

In this page you can find the example usage for java.util Enumeration Enumeration.

Prototype

Enumeration

Source Link

Usage

From source file:org.echocat.nodoodle.classloading.FileClassLoader.java

@Override
public Enumeration<URL> getResources(String name) throws IOException {
    final Enumeration<URL> localResources = findResources(name);
    final ClassLoader parent = getParent();
    // noinspection unchecked
    final Enumeration<URL> globalResources = parent != null ? parent.getResources(name)
            : asEnumeration(emptyIterator());
    return new Enumeration<URL>() {

        private boolean _local = true;

        @Override//  w ww.  ja  va2s.  com
        public boolean hasMoreElements() {
            if (_local && !localResources.hasMoreElements()) {
                _local = false;
            }
            return _local ? localResources.hasMoreElements() : globalResources.hasMoreElements();
        }

        @Override
        public URL nextElement() {
            if (_local && localResources.nextElement() == null) {
                _local = false;
            }
            return _local ? localResources.nextElement() : globalResources.nextElement();
        }
    };
}

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From source file:org.impalaframework.classloader.URLClassRetriever.java

public Enumeration<URL> findResources(String resourceName) {

    Enumeration<URL> findResource = null;
    try {/*  w w  w . j av  a  2 s.  co  m*/
        findResource = urlClassLoader.findResources(resourceName);

        if (logger.isTraceEnabled()) {

            if (findResource != null) {
                logger.trace("Successfully found URL " + findResource + " from " + this);
            } else {
                logger.trace("Unable to find URL for " + resourceName + " from " + this);
            }
        }
    } catch (IOException e) {
        if (logger.isDebugEnabled()) {
            logger.debug("IO exception caught in findResources(): ", e);
        }

        return new Enumeration<URL>() {
            public boolean hasMoreElements() {
                return false;
            }

            public URL nextElement() {
                throw new NoSuchElementException();
            }
        };
    }

    return findResource;
}

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From source file:net.ymate.platform.mvc.web.support.MultipartRequestWrapper.java

public Enumeration<String> getParameterNames() {
    Enumeration<String> names = new Enumeration<String>() {
        private Iterator<String> it = getParameterMap().keySet().iterator();

        public boolean hasMoreElements() {
            return it.hasNext();
        }/* w  ww. j  a va2  s .  com*/

        public String nextElement() {
            return it.next();
        }
    };
    return names;
}

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From source file:org.pentaho.platform.web.servlet.JAXRSServlet.java

@Override
public void service(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    if (logger.isDebugEnabled()) {
        logger.debug("servicing request for resource " + request.getPathInfo()); //$NON-NLS-1$
    }/*from  ww  w.  j a  v a  2s  .  c o  m*/

    if (request.getMethod().equals(GET)) {
        // Extension to allow accept type override from mime-type query param
        final String mimeType = request.getParameter(MIME_TYPE);
        if (mimeType != null) {
            final HttpServletRequest originalRequest = request;

            request = (HttpServletRequest) Proxy.newProxyInstance(getClass().getClassLoader(),
                    new Class[] { HttpServletRequest.class }, new InvocationHandler() {
                        public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                            if (method.getName().equals(GET_HEADERS) && args.length > 0
                                    && args[0].equals(ACCEPT)) {
                                return new Enumeration() {
                                    boolean hasMore = true;

                                    @Override
                                    public boolean hasMoreElements() {
                                        return hasMore;
                                    }

                                    @Override
                                    public Object nextElement() {
                                        hasMore = false;
                                        return mimeType;
                                    }
                                };
                            }
                            return method.invoke(originalRequest, args);
                        }
                    });
        }
    }
    super.service(request, response);
}

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From source file:net.gleamynode.conversion.support.discovery.tools.Service.java

/**
 * This version lets you specify constructor arguments..
 * //from  www  . j  a  va  2 s  .  c  om
 * @param spi SPI to look for and load.
 * @param classLoaders loaders to use in search.
 *        If <code>null</code> then use ClassLoaders.getAppLoaders().
 */
public static Enumeration providers(final SPInterface spi, ClassLoaders loaders) {
    if (loaders == null) {
        loaders = ClassLoaders.getAppLoaders(spi.getSPClass(), Service.class, true);
    }

    ResourceNameIterator servicesIter = (new DiscoverServiceNames(loaders)).findResourceNames(spi.getSPName());

    final ResourceClassIterator services = (new DiscoverClasses(loaders)).findResourceClasses(servicesIter);

    return new Enumeration() {
        private Object object = null;

        public boolean hasMoreElements() {
            if (object == null) {
                object = getNextClassInstance();
            }
            return object != null;
        }

        public Object nextElement() {
            Object obj = object;
            object = null;
            return obj;
        }

        private Object getNextClassInstance() {
            while (services.hasNext()) {
                ResourceClass info = services.nextResourceClass();
                try {
                    return spi.newInstance(info.loadClass());
                } catch (Exception e) {
                    // ignore
                }
            }
            return null;
        }
    };
}

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From source file:org.apache.axis.i18n.ProjectResourceBundle.java

public Enumeration getKeys() {
    Enumeration myKeys = resourceBundle.getKeys();
    if (parent == null) {
        return myKeys;
    } else {//from   w ww. jav a2 s .c  o  m
        final HashSet set = new HashSet();
        while (myKeys.hasMoreElements()) {
            set.add(myKeys.nextElement());
        }

        Enumeration pKeys = parent.getKeys();
        while (pKeys.hasMoreElements()) {
            set.add(pKeys.nextElement());
        }

        return new Enumeration() {
            private Iterator it = set.iterator();

            public boolean hasMoreElements() {
                return it.hasNext();
            }

            public Object nextElement() {
                return it.next();
            }
        };
    }
}

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From source file:org.eclipse.ui.internal.wizards.datatransfer.TarFile.java

/**
 * Returns an enumeration cataloguing the tar archive.
 * /*from   w  w  w. ja  v a 2s.c  o  m*/
 * @return enumeration of all files in the archive
 */
public Enumeration entries() {
    return new Enumeration() {
        public boolean hasMoreElements() {
            return (curEntry != null);
        }

        public Object nextElement() {
            TarEntry oldEntry = curEntry;
            try {
                curEntry = entryEnumerationStream.getNextEntry();
            } catch (TarException e) {
                curEntry = null;
            } catch (IOException e) {
                curEntry = null;
            }
            return oldEntry;
        }
    };
}

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From source file:com.liyo.html.HTMLParser.java

/**
 * Returns an iterator (enumeration) to the html nodes. Each node can be a tag/endtag/
 * string/link/image//from  w w w  .  ja v  a 2 s  .c  om
 */
public Enumeration elements() {
    return new Enumeration() {
        public boolean hasMoreElements() {
            if (reader == null)
                return false;
            try {
                node = reader.readElement();
                readFlag = true;
                if (node == null) {
                    return false;
                } else {
                    return true;
                }
            } catch (IOException e) {
                System.err.println("I/O Exception occured while reading " + resourceUrl);
                return false;
            }
        }

        public Object nextElement() {
            try {
                if (!readFlag)
                    node = reader.readElement();
                return node;
            } catch (IOException e) {
                System.err.println("I/O Exception occured while reading " + resourceUrl);
                return null;
            }
        }
    };
}

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From source file:org.pentaho.hadoop.shim.HadoopConfigurationClassLoader.java

@Override
public Enumeration<URL> getResources(String name) throws IOException {
    final Enumeration<URL> myResources = findResources(name);
    final Enumeration<URL> parentResources = getParent().getResources(name);

    return new Enumeration<URL>() {
        @Override//  ww w  .j  av  a2s .  c  om
        public boolean hasMoreElements() {
            return myResources.hasMoreElements() || parentResources.hasMoreElements();
        }

        @Override
        public URL nextElement() {
            if (myResources.hasMoreElements()) {
                return myResources.nextElement();
            }
            return parentResources.nextElement();
        }
    };
}

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From source file:org.wings.session.MultipartRequest.java

/**
 * Returns the names of all the parameters as an Enumeration of
 * Strings.  It returns an empty Enumeration if there are no parameters.
 *
 * @return the names of all the parameters as an Enumeration of Strings
 *//*from  w ww .ja  v  a 2  s.  co  m*/
public Enumeration getParameterNames() {
    if (urlencodedRequest)
        return super.getParameterNames();

    final Iterator iter = parameters.keySet().iterator();
    return new Enumeration() {
        public boolean hasMoreElements() {
            return iter.hasNext();
        }

        public Object nextElement() {
            return iter.next();
        }
    };
}

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