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• Headers.java

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
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package com.sun.xml.ws.transport;

import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.io.*;

/**
 * HTTP request and response headers are represented by this class which implements
 * the interface {@link java.util.Map}<
 * {@link java.lang.String},{@link java.util.List}<{@link java.lang.String}>>.
 * The keys are case-insensitive Strings representing the header names and
 * the value associated with each key is a {@link List}<{@link String}> with one
 * element for each occurence of the header name in the request or response.
 * 

 * For example, if a response header instance contains one key "HeaderName" with two values "value1 and value2"
 * then this object is output as two header lines:
 * 
 * HeaderName: value1
 * HeaderName: value2
 * 

* All methods in this class accept null values for keys and values. However, null * keys will never will be present in HTTP request headers, and will not be output/sent in response headers. * Null values can be represented as either a null entry for the key (i.e. the list is null) or * where the key has a list, but one (or more) of the list's values is null. Null values are output * as a header line containing the key but no associated value. * @since 1.6 */ public class Headers implements Map> { HashMap> map; public Headers () { map = new HashMap>(32); } /* Normalize the key by converting to following form. * First char upper case, rest lower case. * key is presumed to be ASCII */ private String normalize (String key) { if (key == null) { return null; } int len = key.length(); if (len == 0) { return key; } char[] b = new char [len]; String s = null; b = key.toCharArray(); if (b[0] >= 'a' && b[0] <= 'z') { b[0] = (char)(b[0] - ('a' - 'A')); } for (int i=1; i= 'A' && b[i] <= 'Z') { b[i] = (char) (b[i] + ('a' - 'A')); } } s = new String (b); return s; } public int size() { return map.size(); } public boolean isEmpty() { return map.isEmpty(); } public boolean containsKey(Object key) { if (key == null) { return false; } if (!(key instanceof String)) { return false; } return map.containsKey (normalize((String)key)); } public boolean containsValue(Object value) { return map.containsValue(value); } public List get(Object key) { return map.get(normalize((String)key)); } /** * returns the first value from the List of String values * for the given key (if at least one exists). * @param key the key to search for * @return the first string value associated with the key */ public String getFirst (String key) { List l = map.get(normalize((String)key)); if (l == null) { return null; } return l.get(0); } public List put(String key, List value) { return map.put (normalize(key), value); } /** * adds the given value to the list of headers * for the given key. If the mapping does not * already exist, then it is created * @param key the header name * @param value the header value to add to the header */ public void add (String key, String value) { String k = normalize(key); List l = map.get(k); if (l == null) { l = new LinkedList(); map.put(k,l); } l.add (value); } /** * sets the given value as the sole header value * for the given key. If the mapping does not * already exist, then it is created * @param key the header name * @param value the header value to set. */ public void set (String key, String value) { LinkedList l = new LinkedList(); l.add (value); put (key, l); } public List remove(Object key) { return map.remove(normalize((String)key)); } public void putAll(Map> t) { for(Map.Entry> entry : t.entrySet()) { put(entry.getKey(), entry.getValue()); } } public void clear() { map.clear(); } public Set keySet() { return map.keySet(); } public Collection> values() { return map.values(); } public Set>> entrySet() { return map.entrySet(); } public boolean equals(Object o) { return map.equals(o); } public int hashCode() { return map.hashCode(); } @Override public String toString() { return map.toString(); } }