/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.jena.fuseki;
import org.apache.jena.fuseki.server.SPARQLServer ;
import org.apache.jena.query.ARQ ;
import org.apache.jena.riot.system.stream.LocatorFTP ;
import org.apache.jena.riot.system.stream.LocatorHTTP ;
import org.apache.jena.riot.system.stream.StreamManager ;
import org.apache.jena.sparql.SystemARQ ;
import org.apache.jena.sparql.lib.Metadata ;
import org.apache.jena.sparql.mgt.SystemInfo ;
import org.apache.jena.sparql.util.Context ;
import org.apache.jena.sparql.util.MappingRegistry ;
import org.apache.jena.system.JenaSystem ;
import org.apache.jena.tdb.TDB ;
import org.apache.jena.tdb.transaction.TransactionManager ;
import org.slf4j.Logger ;
import org.slf4j.LoggerFactory ;
/**
* <p>The main class enabling us to:</p>
* <ol>
* <li>create instances of a Fuseki server e.g.
* the ARQ, RIOT and TDB server stack</li>
* <li>get server global {@link org.apache.jena.sparql.util.Context} e.g.
* named values used to pass implementation-specific parameters across
* general interfaces.</li>
* <li>get the {@link org.apache.jena.fuseki.server.SPARQLServer} instance.</li>
* <li>set the {@link org.apache.jena.fuseki.server.SPARQLServer} instance.</li>
*
*/
public class Fuseki
{
/** Path to ???*/
static public String PATH = "org.apache.jena.fuseki" ;
/** a unique IRI for the Fuseki namespace*/
static public String FusekiIRI = "http://jena.apache.org/Fuseki" ;
/** Fuseki home environment, usually set to $FUSEKI_HOME */
static public String FusekiHomeEnv = "FUSEKI_HOME" ;
/** a unique IRI including the symbol notation for which properties should be appended */
static public String FusekiSymbolIRI = "http://jena.apache.org/fuseki#" ;
/** ??? */
static public String PagesStatic = "pages" ;
/**
* TEMPORARY - this enables POST of triples to the dataset URI causing a graph to be created.
* POSTing to /dataset?graph=uri is preferred
*/
static public boolean graphStoreProtocolPostCreate = false ;
/** an relative path to the location of <code>fuseki-properties.xml</code> file */
static private String metadataLocation = "org/apache/jena/fuseki/fuseki-properties.xml" ;
/** Object which holds metadata specified within {@link Fuseki#metadataLocation} */
static private Metadata metadata = initMetadata() ;
private static Metadata initMetadata()
{
Metadata m = new Metadata() ;
//m.addMetadata(metadataDevLocation) ;
m.addMetadata(metadataLocation) ;
return m ;
}
/** The name of the Fuseki server. Set to the string <code>Fuseki</code> by default.*/
static public final String NAME = "Fuseki" ;
/** Version of this Fuseki instance */
static public final String VERSION = metadata.get(PATH+".version", "development");
/** Date when Fuseki was built */
static public final String BUILD_DATE = metadata.get(PATH+".build.datetime", "unknown") ; // call Date if unavailable.
/** An identifier for the HTTP Fuseki server instance*/
static public final String serverHttpName = NAME+" ("+VERSION+")" ;
/** Actual log file for operations */
public static final String requestLogName = PATH+".Fuseki" ;
/** Instance of log for operations */
public static final Logger requestLog = LoggerFactory.getLogger(requestLogName) ;
/** Actual log file for general server messages.*/
public static final String serverLogName = PATH+".Server" ;
/** Instance of log for general server messages */
public static final Logger serverLog = LoggerFactory.getLogger(serverLogName) ;
/** Actual log file for config server messages. */
public static final String configLogName = PATH+".Config" ;
/** Instance of log for config server message s*/
public static final Logger configLog = LoggerFactory.getLogger(configLogName) ;
/** Instance of log for config server message s*/
public static boolean verboseLogging = false ;
/** An instance of management for stream opening, including redirecting through a
* location mapper whereby a name (e.g. URL) is redirected to another name (e.g. local file).
* */
public static final StreamManager webStreamManager ;
static {
webStreamManager = new StreamManager() ;
// Only know how to handle http and ftp URLs - nothing local.
webStreamManager.addLocator(new LocatorHTTP()) ;
webStreamManager.addLocator(new LocatorFTP()) ;
}
private static boolean initialized = false ;
/**
* Initialize an instance of the Fuseki server stack.
*/
public synchronized static void init()
{
if ( initialized )
return ;
initialized = true ;
JenaSystem.init();
SystemInfo sysInfo = new SystemInfo(FusekiIRI, PATH, VERSION, BUILD_DATE) ;
SystemARQ.registerSubSystem(sysInfo) ;
MappingRegistry.addPrefixMapping("fuseki", FusekiSymbolIRI) ;
TDB.setOptimizerWarningFlag(false) ;
// Don't set TDB batch commits.
// This can be slower, but it less memory hungry and more predictable.
TransactionManager.QueueBatchSize = 0 ;
}
/**
* Get server global {@link org.apache.jena.sparql.util.Context}.
* @return {@link org.apache.jena.query.ARQ#getContext()}
*/
public static Context getContext()
{
return ARQ.getContext() ;
}
// Temporary ...
private static SPARQLServer server ;
/** set/specify the {@link org.apache.jena.fuseki.server.SPARQLServer} instance.*/
public static void setServer(SPARQLServer _server) { server = _server ; }
/** get the {@link org.apache.jena.fuseki.server.SPARQLServer} instance. */
public static SPARQLServer getServer() { return server ; }
// Force a call to init.
static { init() ; }
}