Examples of org.restlet.client.data.Parameter

org.restlet.client.data.Parameter
Multi-usage parameter. Note that the name and value properties are thread safe, stored in volatile members. @author Jerome Louvel

     *             If the parameters could not be read.
     */
    @SuppressWarnings("unchecked")
    public void readParameters(Map<String, Object> parameters)
            throws IOException {
        Parameter param = readNextParameter();
        Object currentValue = null;


        while (param != null) {
            if (parameters.containsKey(param.getName())) {
                currentValue = parameters.get(param.getName());


                if (currentValue != null) {
                    List<Object> values = null;


                    if (currentValue instanceof List) {
                        // Multiple values already found for this parameter
                        values = (List<Object>) currentValue;
                    } else {
                        // Second value found for this parameter
                        // Create a list of values
                        values = new ArrayList<Object>();
                        values.add(currentValue);
                        parameters.put(param.getName(), values);
                    }


                    if (param.getValue() == null) {
                        values.add(Series.EMPTY_VALUE);
                    } else {
                        values.add(param.getValue());
                    }
                } else {
                    if (param.getValue() == null) {
                        parameters.put(param.getName(), Series.EMPTY_VALUE);
                    } else {
                        parameters.put(param.getName(), param.getValue());
                    }
                }
            }


            param = readNextParameter();

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     *            The supported character encoding.
     * @return The created parameter.
     */
    public static Parameter create(CharSequence name, CharSequence value,
            boolean decode, CharacterSet characterSet) {
        Parameter result = null;


        if (name != null) {
            String nameStr;
            if (decode) {
                nameStr = Reference.decode(name.toString(), characterSet);
            } else {
                nameStr = name.toString();
            }
            if (value != null) {
                String valueStr;
                if (decode) {
                    valueStr = Reference.decode(value.toString(), characterSet);
                } else {
                    valueStr = value.toString();
                }
                result = new Parameter(nameStr, valueStr);
            } else {
                result = new Parameter(nameStr, null);
            }
        }
        return result;
    }

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     * @param params
     *            The map controlling the copy.
     */
    @SuppressWarnings("unchecked")
    public void copyTo(Map<String, Object> params) {
        Parameter param;
        Object currentValue = null;
        for (final Iterator<E> iter = iterator(); iter.hasNext();) {
            param = iter.next();


            if (params.containsKey(param.getName())) {
                currentValue = params.get(param.getName());


                if (currentValue != null) {
                    List<Object> values = null;


                    if (currentValue instanceof List) {
                        // Multiple values already found for this entry
                        values = (List<Object>) currentValue;
                    } else {
                        // Second value found for this entry
                        // Create a list of values
                        values = new ArrayList<Object>();
                        values.add(currentValue);
                        params.put(param.getName(), values);
                    }


                    if (param.getValue() == null) {
                        values.add(Series.EMPTY_VALUE);
                    } else {
                        values.add(param.getValue());
                    }
                } else {
                    if (param.getValue() == null) {
                        params.put(param.getName(), Series.EMPTY_VALUE);
                    } else {
                        params.put(param.getName(), param.getValue());
                    }
                }
            }
        }
    }

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     *         default value.
     */
    public String getFirstValue(String name, boolean ignoreCase,
            String defaultValue) {
        String result = defaultValue;
        Parameter param = getFirst(name, ignoreCase);


        if ((param != null) && (param.getValue() != null)) {
            result = param.getValue();
        }


        return result;
    }

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     *            Indicates if the name comparison is case insensitive.
     * @return True if the list changed.
     */
    public boolean removeAll(String name, boolean ignoreCase) {
        boolean changed = false;
        Parameter param = null;


        for (final Iterator<E> iter = iterator(); iter.hasNext();) {
            param = iter.next();
            if (equals(param.getName(), name, ignoreCase)) {
                iter.remove();
                changed = true;
            }
        }

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     *            Indicates if the name comparison is case insensitive.
     * @return false if no entry has been removed, true otherwise.
     */
    public boolean removeFirst(String name, boolean ignoreCase) {
        boolean changed = false;
        Parameter param = null;


        for (final Iterator<E> iter = iterator(); iter.hasNext() && !changed;) {
            param = iter.next();
            if (equals(param.getName(), name, ignoreCase)) {
                iter.remove();
                changed = true;
            }
        }

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     *            The header line to parse.
     * @return The header read or null.
     * @throws IOException
     */
    public static Parameter readHeader(CharSequence header) throws IOException {
        Parameter result = null;


        if (header.length() > 0) {
            // Detect the end of headers
            int start = 0;
            int index = 0;
            int next = header.charAt(index++);


            if (isCarriageReturn(next)) {
                next = header.charAt(index++);


                if (!isLineFeed(next)) {
                    throw new IOException(
                            "Invalid end of headers. Line feed missing after the carriage return.");
                }
            } else {
                result = new Parameter();


                // Parse the header name
                while ((index < header.length()) && (next != ':')) {
                    next = header.charAt(index++);
                }


                if (index == header.length()) {
                    throw new IOException(
                            "Unable to parse the header name. End of line reached too early.");
                }


                result.setName(header.subSequence(start, index - 1).toString());
                next = header.charAt(index++);


                while (isSpace(next)) {
                    // Skip any separator space between colon and header value
                    next = header.charAt(index++);
                }


                start = index - 1;


                // Parse the header value
                result.setValue(header.subSequence(start, header.length())
                        .toString());
            }
        }


        return result;

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     * @return The header read or null.
     * @throws IOException
     */
    public static Parameter readHeader(InputStream is, StringBuilder sb)
            throws IOException {
        Parameter result = null;


        // Detect the end of headers
        int next = is.read();
        if (isCarriageReturn(next)) {
            next = is.read();
            if (!isLineFeed(next)) {
                throw new IOException(
                        "Invalid end of headers. Line feed missing after the carriage return.");
            }
        } else {
            result = new Parameter();


            // Parse the header name
            while ((next != -1) && (next != ':')) {
                sb.append((char) next);
                next = is.read();
            }


            if (next == -1) {
                throw new IOException(
                        "Unable to parse the header name. End of stream reached too early.");
            }


            result.setName(sb.toString());
            sb.delete(0, sb.length());


            next = is.read();
            while (isSpace(next)) {
                // Skip any separator space between colon and header value
                next = is.read();
            }


            // Parse the header value
            while ((next != -1) && (!isCarriageReturn(next))) {
                sb.append((char) next);
                next = is.read();
            }


            if (next == -1) {
                throw new IOException(
                        "Unable to parse the header value. End of stream reached too early.");
            }
            next = is.read();


            if (isLineFeed(next)) {
                result.setValue(sb.toString());
                sb.delete(0, sb.length());
            } else {
                throw new IOException(
                        "Unable to parse the HTTP header value. The carriage return must be followed by a line feed.");
            }

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     * @param value
     *            The parameter value or null.
     * @return The new parameter.
     */
    protected Parameter createParameter(String name, String value) {
        return new Parameter(name, value);
    }

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     * 
     * @return The next pair as a parameter.
     * @throws IOException
     */
    public Parameter readParameter() throws IOException {
        Parameter result = null;
        String name = readToken();
        int nextChar = read();


        if (name.length() > 0) {
            if (nextChar == '=') {

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