Example usage for java.util Collections enumeration

Introduction

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

Prototype

public static <T> Enumeration<T> enumeration(final Collection<T> c) 

Source Link

Document

Returns an enumeration over the specified collection.

Usage

From source file:org.directwebremoting.util.FakeHttpServletRequest.java

public Enumeration<Locale> getLocales() {
    return Collections.enumeration(Arrays.asList(Locale.getDefault()));
}

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From source file:com.amazonaws.serverless.proxy.internal.servlet.AwsProxyHttpServletRequest.java

@Override
public Enumeration<String> getParameterNames() {
    List<String> paramNames = new ArrayList<>();
    paramNames.addAll(request.getQueryStringParameters().keySet());
    paramNames.addAll(urlEncodedFormParameters.keySet());
    return Collections.enumeration(paramNames);
}

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From source file:org.darkstar.batch.utils.DarkstarUtils.java

/**
 * Method to Load the Npc Id Mapping Properties
 * @return Mapping Properties//from  w  w  w  . j a  va  2  s.c o  m
 */
public static Properties loadMappingProperties(final Properties configProperties) {
    final Properties mappingProperties = new Properties() {
        private static final long serialVersionUID = 665397466355935210L;

        @Override
        public synchronized Enumeration<Object> keys() {
            return Collections.enumeration(new TreeSet<Object>(super.keySet()));
        }

        @Override
        public Set<Object> keySet() {
            return Collections.unmodifiableSet(new TreeSet<Object>(super.keySet()));
        }
    };

    try {
        final File mappingFile = new File(
                configProperties.getProperty("mapping_file", "./npcid-mapping.properties"));
        if (mappingFile.exists()) {
            final FileInputStream mappingStream = new FileInputStream(mappingFile);
            mappingProperties.load(mappingStream);
            IOUtils.closeQuietly(mappingStream);
        }
    } catch (final Exception e) {
        throw new RuntimeException("Error Reading Mapping File!", e);
    }

    return mappingProperties;
}

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From source file:org.apache.wicket.protocol.http.mock.MockHttpServletRequest.java

/**
 * Get the names of all of the headers.//from   w  w w.  ja v a2s .co  m
 * 
 * @return The header names
 */
@Override
public Enumeration<String> getHeaderNames() {
    return Collections.enumeration(headers.keySet());
}

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From source file:org.sakaiproject.entitybroker.util.http.EntityHttpServletRequest.java

public Enumeration getAttributeNames() {
    return Collections.enumeration(attributes.keySet());
}

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From source file:org.tinygroup.jspengine.runtime.PageContextImpl.java

private Enumeration<String> doGetAttributeNamesInScope(int scope) {
    switch (scope) {
    case PAGE_SCOPE:
        if (!isNametableInitialized) {
            initializePageScopeNameTable();
        }//from  www  . ja  v a  2 s .com
        return Collections.enumeration(attributes.keySet());

    case REQUEST_SCOPE:
        return request.getAttributeNames();

    case SESSION_SCOPE:
        if (session == null) {
            throw new IllegalStateException(Localizer.getMessage("jsp.error.page.noSession"));
        }
        return session.getAttributeNames();

    case APPLICATION_SCOPE:
        return context.getAttributeNames();

    default:
        throw new IllegalArgumentException("Invalid scope");
    }
}

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From source file:org.xwoot.jxta.mock.MockJxtaPeer.java

/** {@inheritDoc} **/
public Enumeration<PeerGroupAdvertisement> getKnownGroups() {

    if (!this.isConnectedToNetwork()) {
        logger.warn("Not connected to network.");
        // return empty enumeration.
        return Collections.enumeration(new ArrayList<PeerGroupAdvertisement>());
    }// w  w w. j  a  v a 2s  .c  o  m

    discoverGroups(null, null);

    return Collections.enumeration(this.localGroupAdvRegistry);
}

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From source file:me.tatetian.hs.io.SamplableByteArrayOutputStream.java

/**
 * Gets the current contents of this byte stream as a Input Stream. The
 * returned stream is backed by buffers of <code>this</code> stream,
 * avoiding memory allocation and copy, thus saving space and time.<br>
 * //from   w w  w  .ja v a 2 s.  c o  m
 * @return the current contents of this output stream.
 * @see java.io.ByteArrayOutputStream#toByteArray()
 * @see #reset()
 * @since Commons IO 2.0
 */
private InputStream toBufferedInputStream() {
    int remaining = count;
    if (remaining == 0) {
        return new ClosedInputStream();
    }
    List<ByteArrayInputStream> list = new ArrayList<ByteArrayInputStream>(buffers.size());
    for (byte[] buf : buffers) {
        int c = Math.min(buf.length, remaining);
        list.add(new ByteArrayInputStream(buf, 0, c));
        remaining -= c;
        if (remaining == 0) {
            break;
        }
    }
    return new SequenceInputStream(Collections.enumeration(list));
}

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From source file:org.apache.wicket.protocol.http.mock.MockHttpServletRequest.java

/**
 * Get enumeration of all header values with the given name.
 * /*from w ww.j av  a  2s .co  m*/
 * @param name
 *            The name
 * @return The header values
 */
@Override
public Enumeration<String> getHeaders(final String name) {
    @SuppressWarnings("unchecked")
    List<String> list = (List<String>) headers.get(name);
    if (list == null) {
        list = new ArrayList<String>();
    }
    return Collections.enumeration(list);
}

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From source file:org.apache.struts.util.RequestUtils.java

/**
 * <p>Populate the properties of the specified JavaBean from the specified
 * HTTP request, based on matching each parameter name (plus an optional
 * prefix and/or suffix) against the corresponding JavaBeans "property
 * setter" methods in the bean's class. Suitable conversion is done for
 * argument types as described under <code>setProperties</code>.</p>
 * <p/>//from ww w.  j a  v  a 2s . c  o m
 * <p>If you specify a non-null <code>prefix</code> and a non-null
 * <code>suffix</code>, the parameter name must match
 * <strong>both</strong> conditions for its value(s) to be used in
 * populating bean properties. If the request's content type is
 * "multipart/form-data" and the method is "POST", the
 * <code>HttpServletRequest</code> object will be wrapped in a
 * <code>MultipartRequestWrapper</code object.</p>
 *
 * @param bean    The JavaBean whose properties are to be set
 * @param prefix  The prefix (if any) to be prepend to bean property names
 *                when looking for matching parameters
 * @param suffix  The suffix (if any) to be appended to bean property
 *                names when looking for matching parameters
 * @param request The HTTP request whose parameters are to be used to
 *                populate bean properties
 * @throws ServletException if an exception is thrown while setting
 *                          property values
 */
public static void populate(Object bean, String prefix, String suffix, HttpServletRequest request)
        throws ServletException {
    // Build a list of relevant request parameters from this request
    HashMap properties = new HashMap();

    // Iterator of parameter names
    Enumeration names = null;

    // Map for multipart parameters
    Map multipartParameters = null;

    String contentType = request.getContentType();
    String method = request.getMethod();
    boolean isMultipart = false;

    if (bean instanceof ActionForm) {
        ((ActionForm) bean).setMultipartRequestHandler(null);
    }

    MultipartRequestHandler multipartHandler = null;
    if ((contentType != null) && (contentType.startsWith("multipart/form-data"))
            && (method.equalsIgnoreCase("POST"))) {
        // Get the ActionServletWrapper from the form bean
        ActionServletWrapper servlet;

        if (bean instanceof ActionForm) {
            servlet = ((ActionForm) bean).getServletWrapper();
        } else {
            throw new ServletException(
                    "bean that's supposed to be " + "populated from a multipart request is not of type "
                            + "\"org.apache.struts.action.ActionForm\", but type " + "\""
                            + bean.getClass().getName() + "\"");
        }

        // Obtain a MultipartRequestHandler
        multipartHandler = getMultipartHandler(request);

        if (multipartHandler != null) {
            isMultipart = true;

            // Set servlet and mapping info
            servlet.setServletFor(multipartHandler);
            multipartHandler.setMapping((ActionMapping) request.getAttribute(Globals.MAPPING_KEY));

            // Initialize multipart request class handler
            multipartHandler.handleRequest(request);

            //stop here if the maximum length has been exceeded
            Boolean maxLengthExceeded = (Boolean) request
                    .getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);

            if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue())) {
                ((ActionForm) bean).setMultipartRequestHandler(multipartHandler);
                return;
            }

            //retrieve form values and put into properties
            multipartParameters = getAllParametersForMultipartRequest(request, multipartHandler);
            names = Collections.enumeration(multipartParameters.keySet());
        }
    }

    if (!isMultipart) {
        names = request.getParameterNames();
    }

    while (names.hasMoreElements()) {
        String name = (String) names.nextElement();
        String stripped = name;

        if (prefix != null) {
            if (!stripped.startsWith(prefix)) {
                continue;
            }

            stripped = stripped.substring(prefix.length());
        }

        if (suffix != null) {
            if (!stripped.endsWith(suffix)) {
                continue;
            }

            stripped = stripped.substring(0, stripped.length() - suffix.length());
        }

        Object parameterValue = null;

        if (isMultipart) {
            parameterValue = multipartParameters.get(name);
            parameterValue = rationalizeMultipleFileProperty(bean, name, parameterValue);
        } else {
            parameterValue = request.getParameterValues(name);
        }

        // Populate parameters, except "standard" struts attributes
        // such as 'org.apache.struts.action.CANCEL'
        if (!(stripped.startsWith("org.apache.struts."))) {
            properties.put(stripped, parameterValue);
        }
    }

    // Set the corresponding properties of our bean
    try {
        BeanUtils.populate(bean, properties);
    } catch (Exception e) {
        throw new ServletException("BeanUtils.populate", e);
    } finally {
        if (multipartHandler != null) {
            // Set the multipart request handler for our ActionForm.
            // If the bean isn't an ActionForm, an exception would have been
            // thrown earlier, so it's safe to assume that our bean is
            // in fact an ActionForm.
            ((ActionForm) bean).setMultipartRequestHandler(multipartHandler);
        }
    }
}

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