NamespaceContextImpl.java

/*
 * #%L
 * Service Locator Client for CXF
 * %%
 * Copyright (C) 2011 - 2012 Talend Inc.
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package org.talend.esb.servicelocator;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.xml.namespace.NamespaceContext;

public class NamespaceContextImpl implements NamespaceContext {

    public static final String SL_NS = "http://talend.org/schemas/esb/locator/content/20011/11";

    public static final String SL_PREFIX = "sl";

    public static final String WSA_NS = "http://www.w3.org/2005/08/addressing";

    public static final String WSA_PREFIX = "wsa";

    public static final NamespaceContext SL_NS_CONTEXT =
        new NamespaceContextImpl(SL_PREFIX , SL_NS);

    public static final NamespaceContext WSA_NS_CONTEXT =
        new NamespaceContextImpl(WSA_PREFIX , WSA_NS);

    public static final NamespaceContext WSA_SL_NS_CONTEXT =
        new NamespaceContextImpl(WSA_PREFIX , WSA_NS).add(SL_PREFIX, SL_NS);

    private Map<String, String> prefixMap = new HashMap<String, String>();

    private Map<String, List<String>> namespaceURIMap = new HashMap<String, List<String>>();

    public NamespaceContextImpl(String prefix, String namespaceURI) {
        prefixMap.put(prefix, namespaceURI);
        List<String> prefixes = new ArrayList<String>();
        prefixes.add(prefix);
        namespaceURIMap.put(namespaceURI, prefixes);
    }
    
    public NamespaceContextImpl add(String prefix, String namespaceURI) {
        prefixMap.put(prefix, namespaceURI);
        
        
        List<String> prefixes = namespaceURIMap.get(namespaceURI);
        if (prefixes == null) {
            prefixes = new ArrayList<String>();
            namespaceURIMap.put(namespaceURI, prefixes);
        }

        prefixes.add(prefix);
        return this;
    }

    @Override
    public String getNamespaceURI(String prefix) {
        return prefixMap.get(prefix);
    }

    @Override
    public String getPrefix(String namespaceURI) {
        List<String> prefixes = namespaceURIMap.get(namespaceURI);
        if (prefixes != null) {
            return prefixes.get(0);
        } else {
            return null;
        }
    }

    @SuppressWarnings("rawtypes")
    @Override
    public Iterator getPrefixes(String namespaceURI) {
        List<String> prefixes = namespaceURIMap.get(namespaceURI);
        if (prefixes != null) {
            return prefixes.iterator();
        } else {
            return Collections.emptyList().iterator();
        }
    }
}