/*
 *  Copyright 2010 reto.
 * 
 *  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.
 *  under the License.
 */

package org.apache.clerezza.platform;

import org.apache.clerezza.rdf.core.UriRef;

/**
 * This class gropus some constant values used by the clerezza.platform components
 *
 * @author reto
 */
public class Constants {

    /**
     * all hosts uri-prefix, uri scheme for references relative to the local
     * instance.
     */
    public static final String URN_LOCAL_INSTANCE = "urn:x-localinstance:";

    /**
     * the uri of the system graph as string
     */
    public static final String SYSTEM_GRAPH_URI_STRING =
            URN_LOCAL_INSTANCE+"/system.graph";
    /**
     * the uri of the system graph
     */
    public static final UriRef SYSTEM_GRAPH_URI =
            new UriRef(SYSTEM_GRAPH_URI_STRING);

    /**
     * the uri of the config graph as string
     */
    public static final String CONFIG_GRAPH_URI_STRING =
            URN_LOCAL_INSTANCE+"/config.graph";
    /**
     * the uri of the config graph as string
     */
    public static final UriRef CONFIG_GRAPH_URI =
            new UriRef(CONFIG_GRAPH_URI_STRING);

    /**
     * the uri of the content graph as string
     */
    public static final String CONTENT_GRAPH_URI_STRING =
            URN_LOCAL_INSTANCE+"/content.graph";
    /**
     * the uri of the content graph
     */
    public static final UriRef CONTENT_GRAPH_URI =
            new UriRef(CONTENT_GRAPH_URI_STRING);


    /**
     * all hosts uri-prefix, uri scheme for which the resource are also named
     * with the any schema/authority the instance can be reached with instead
     * of this prefix
     *
     * @deprecated use URN_LOCAL_INSTANCE
     */
    @Deprecated
    public static final String ALL_HOSTS_URI_PREFIX = URN_LOCAL_INSTANCE;

}