org.fabric3.introspection.xml.composite.StatefulNamespaceContext Maven / Gradle / Ivy

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/*
 * Fabric3
 * Copyright (c) 2009-2013 Metaform Systems
 *
 * Fabric3 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version, with the
 * following exception:
 *
 * Linking this software statically or dynamically with other
 * modules is making a combined work based on this software.
 * Thus, the terms and conditions of the GNU General Public
 * License cover the whole combination.
 *
 * As a special exception, the copyright holders of this software
 * give you permission to link this software with independent
 * modules to produce an executable, regardless of the license
 * terms of these independent modules, and to copy and distribute
 * the resulting executable under terms of your choice, provided
 * that you also meet, for each linked independent module, the
 * terms and conditions of the license of that module. An
 * independent module is a module which is not derived from or
 * based on this software. If you modify this software, you may
 * extend this exception to your version of the software, but
 * you are not obligated to do so. If you do not wish to do so,
 * delete this exception statement from your version.
 *
 * Fabric3 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the
 * GNU General Public License along with Fabric3.
 * If not, see .
*/
package org.fabric3.introspection.xml.composite;

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;

/**
 * A NamespaceContext used for loaded property default values specified on a component configuration.
 */
public class StatefulNamespaceContext implements NamespaceContext {
    private Map prefixToUri = new HashMap();
    private Map> uriToPrefixes = new HashMap>();


    public String getNamespaceURI(String prefix) {
        return prefixToUri.get(prefix);
    }

    public String getPrefix(String namespaceURI) {
        List list = uriToPrefixes.get(namespaceURI);
        if (list == null || list.isEmpty()) {
            return null;
        }
        return list.get(0);
    }

    public Iterator getPrefixes(String namespaceURI) {
        List list = uriToPrefixes.get(namespaceURI);
        if (list == null) {
            return Collections.emptyList().iterator();
        }
        return list.iterator();
    }

    public void addNamespace(String prefix, String namespaceURI) {
        prefixToUri.put(prefix, namespaceURI);
        List list = uriToPrefixes.get(namespaceURI);
        if (list == null) {
            list = new ArrayList();
            uriToPrefixes.put(namespaceURI, list);
        }
        list.add(prefix);
    }
}