org.modeshape.sequencer.sramp.NamespaceEntityResolver Maven / Gradle / Ivy

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/*
 * ModeShape (http://www.modeshape.org)
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * See the AUTHORS.txt file in the distribution for a full listing of 
 * individual contributors.
 *
 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
 * is licensed to you under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * ModeShape 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
 * Lesser General Public License for more details
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org
 */
package org.modeshape.sequencer.sramp;

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

/**
 * A simple registry that keeps track of the identifiers and paths for entities, keyed by their namespace and name.
 */
public final class NamespaceEntityResolver {

    private final Map> identifierByNameByNamespace = new HashMap>();

    public void register( String namespace,
                          String name,
                          String identifier ) {
        Map forNamespace = identifierByNameByNamespace.get(namespace);
        if (forNamespace == null) {
            forNamespace = new HashMap();
            identifierByNameByNamespace.put(namespace, forNamespace);
        }
        forNamespace.put(name, identifier);
    }

    public String lookupIdentifier( String namespace,
                                    String name ) {
        Map forNamespace = identifierByNameByNamespace.get(namespace);
        if (forNamespace == null) {
            return null;
        }
        return forNamespace.get(name);
    }
}