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A bundle containing code of all jar-based modules that provide JAX-RS and Jersey-related features. Such a bundle is *only intended* for developers that do not use Maven's dependency system. The bundle does not include code for contributes, tests and samples.

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 * 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
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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 * GPL Classpath Exception:
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package com.sun.jersey.json.impl.reader;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.xml.XMLConstants;
import javax.xml.namespace.NamespaceContext;

/**
 *
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 */
public class JsonNamespaceContext implements NamespaceContext {

    static final String PrefixPREFIX = "ns";

    private final Map ns2pMap = new HashMap();
    private final Map p2nsMap = new HashMap();
    private int nsCount = 0;

    protected int getNamespaceCount() {
        return nsCount;
    }

    public String getNamespaceURI(final String prefix) {
        // Invalid prefix.
        if (prefix == null) {
            throw new IllegalArgumentException();
        }

        // Default prefix.
        if (XMLConstants.DEFAULT_NS_PREFIX.equals(prefix)) {
            return XMLConstants.NULL_NS_URI;
        }

        if (p2nsMap.containsKey(prefix)) {
            return p2nsMap.get(prefix);
        }
        return null;
    }

    public String getPrefix(final String namespaceURI) {
        // Invalid NS.
        if (namespaceURI == null) {
            throw new IllegalArgumentException();
        }

        // Default NS.
        if (XMLConstants.NULL_NS_URI.equals(namespaceURI)) {
            return XMLConstants.DEFAULT_NS_PREFIX;
        }

        if (ns2pMap.containsKey(namespaceURI)) {
            return ns2pMap.get(namespaceURI);
        } else {
            final String newPrefix = PrefixPREFIX + ++nsCount;
            ns2pMap.put(namespaceURI, newPrefix);
            p2nsMap.put(newPrefix, namespaceURI);
            return newPrefix;
        }
    }

    public Iterator getPrefixes(String namespaceURI) {
        return p2nsMap.keySet().iterator();
    }

}