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/*
 * #%L
 * Wildfly Gravia Subsystem
 * %%
 * Copyright (C) 2010 - 2013 JBoss by Red Hat
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it 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.
 *
 * This program 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 Lesser Public License for more details.
 *
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */


package org.wildfly.extension.fabric.parser;

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

/**
 * An enumeration of the supported Fabric subsystem namespaces.
 *
 * @since 13-Nov-2013
 */
enum Namespace {

    // must be first
    UNKNOWN(null),
    VERSION_1_0("urn:jboss:domain:fabric:1.0")
    ;

    /**
     * The current namespace version.
     */
    static final Namespace CURRENT = VERSION_1_0;

    private final String name;

    Namespace(final String name) {
        this.name = name;
    }

    /**
     * Get the URI of this namespace.
     */
    String getUriString() {
        return name;
    }

    /**
     * Set of all namespaces, excluding the special {@link #UNKNOWN} value.
     */
    static final EnumSet STANDARD_NAMESPACES = EnumSet.complementOf(EnumSet.of(Namespace.UNKNOWN));

    private static final Map MAP;

    static {
        final Map map = new HashMap();
        for (Namespace namespace : values()) {
            final String name = namespace.getUriString();
            if (name != null) map.put(name, namespace);
        }
        MAP = map;
    }

    static Namespace forUri(String uri) {
        final Namespace element = MAP.get(uri);
        return element == null ? UNKNOWN : element;
    }
}