/*
* 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.query.spatial;
import org.apache.jena.query.spatial.assembler.SpatialAssembler ;
import org.apache.jena.query.spatial.pfunction.library.* ;
import com.hp.hpl.jena.sparql.SystemARQ ;
import com.hp.hpl.jena.sparql.lib.Metadata ;
import com.hp.hpl.jena.sparql.mgt.SystemInfo ;
import com.hp.hpl.jena.sparql.pfunction.PropertyFunction ;
import com.hp.hpl.jena.sparql.pfunction.PropertyFunctionFactory ;
import com.hp.hpl.jena.sparql.pfunction.PropertyFunctionRegistry ;
import com.hp.hpl.jena.sparql.util.Symbol ;
import com.hp.hpl.jena.tdb.TDB ;
import com.spatial4j.core.context.SpatialContext ;
public class SpatialQuery
{
private static boolean initialized = false ;
private static Object lock = new Object() ;
public static String NS = "http://jena.apache.org/spatial#" ;
public static String IRI = "http://jena.apache.org/#spatial" ;
public static final Symbol spatialIndex = Symbol.create(NS+"index") ;
public static final String PATH = "org.apache.jena.query.spatial";
static private String metadataLocation = "org/apache/jena/query/spatial/properties.xml" ;
static private Metadata metadata = new Metadata(metadataLocation) ;
public static final String NAME = "ARQ Spatial Query";
public static final String VERSION = metadata.get(PATH+".version", "unknown") ;
public static final String BUILD_DATE = metadata.get(PATH+".build.datetime", "unset") ;
public static SpatialContext ctx = SpatialContext.GEO;
// an optional feature for WKT literals, loaded when necessary, but not required
public static final String JTS_SPATIAL_CONTEXT_FACTORY_CLASS = "com.spatial4j.core.context.jts.JtsSpatialContextFactory";
static { init() ; }
public static void init()
{
if ( initialized ) return ;
synchronized(lock)
{
if ( initialized ) return ;
initialized = true ;
TDB.init() ;
SpatialAssembler.init() ;
SystemInfo sysInfo = new SystemInfo(IRI, PATH, VERSION, BUILD_DATE) ;
SystemARQ.registerSubSystem(sysInfo) ;
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#withinCircle", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new IsWithinCirclePF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#nearby", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new IsNearByPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#withinBox", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new IsWithinBoxPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#intersectBox", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new IntersectsBoxPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#north", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new NorthPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#south", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new SouthPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#east", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new EastPF() ;
}
});
PropertyFunctionRegistry.get().put("http://jena.apache.org/spatial#west", new PropertyFunctionFactory() {
@Override
public PropertyFunction create(String uri) {
return new WestPF() ;
}
});
}
}
}