/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.bridge.impl;
import java.lang.reflect.AnnotatedElement;
import org.hibernate.search.annotations.Spatial;
import org.hibernate.search.annotations.SpatialMode;
import org.hibernate.search.bridge.FieldBridge;
import org.hibernate.search.spatial.SpatialFieldBridgeByHash;
import org.hibernate.search.spatial.SpatialFieldBridgeByRange;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Built-in {@link org.hibernate.search.bridge.spi.BridgeProvider} handling spatial index bridging
* when {@code @Spatial} is involved.
* As built-in provider, no Service Loader file is used: the {@code BridgeFactory} does access it
* after the custom bridge providers found.
*
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public class SpatialBridgeProvider extends ExtendedBridgeProvider {
private static final Log LOG = LoggerFactory.make();
@Override
public FieldBridge provideFieldBridge(ExtendedBridgeProviderContext context) {
FieldBridge bridge = null;
AnnotatedElement annotatedElement = context.getAnnotatedElement();
if ( annotatedElement.isAnnotationPresent( Spatial.class ) ) {
Spatial spatialAnn = annotatedElement.getAnnotation( Spatial.class );
try {
bridge = buildSpatialBridge( spatialAnn, null, null );
}
catch (Exception e) {
throw LOG.unableToInstantiateSpatial( context.getMemberName(), e );
}
if ( bridge == null ) {
throw LOG.unableToInstantiateSpatial( context.getMemberName(), null );
}
}
return bridge;
}
/**
* This instantiates the SpatialFieldBridge from a {@code Spatial} annotation.
*
* @param spatial the {@code Spatial} annotation
* @return Returns the {@code SpatialFieldBridge} instance
* @param latitudeField a {@link java.lang.String} object.
* @param longitudeField a {@link java.lang.String} object.
*/
public static FieldBridge buildSpatialBridge(Spatial spatial, String latitudeField, String longitudeField) {
FieldBridge bridge = null;
if ( spatial != null ) {
if ( spatial.spatialMode() == SpatialMode.HASH ) {
if ( latitudeField != null && longitudeField != null ) {
bridge = new SpatialFieldBridgeByHash( spatial.topSpatialHashLevel(), spatial.bottomSpatialHashLevel(), latitudeField, longitudeField );
}
else {
bridge = new SpatialFieldBridgeByHash( spatial.topSpatialHashLevel(), spatial.bottomSpatialHashLevel() );
}
}
else {
if ( latitudeField != null && longitudeField != null ) {
bridge = new SpatialFieldBridgeByRange( latitudeField, longitudeField );
}
else {
bridge = new SpatialFieldBridgeByRange();
}
}
}
return bridge;
}
}