/*
* 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.query.dsl.impl;
import java.util.List;
import org.hibernate.search.engine.metadata.impl.FacetMetadata;
import org.hibernate.search.query.facet.Facet;
/**
* @author Hardy Ferentschik
*/
public class RangeFacetRequest<T> extends FacetingRequestImpl {
private final List<FacetRange<T>> facetRangeList;
RangeFacetRequest(String name, String fieldName, List<FacetRange<T>> facetRanges) {
super( name, fieldName );
if ( facetRanges == null || facetRanges.isEmpty() ) {
throw new IllegalArgumentException( "At least one facet range must be specified" );
}
this.facetRangeList = facetRanges;
}
public List<FacetRange<T>> getFacetRangeList() {
return facetRangeList;
}
@Override
public Class<?> getFacetValueType() {
// safe since we have at least one facet range set
Object o = facetRangeList.get( 0 ).getMin();
if ( o == null ) {
o = facetRangeList.get( 0 ).getMax();
}
return o.getClass();
}
@Override
public Facet createFacet(FacetMetadata facetMetadata, String value, int count) {
int facetIndex = findFacetRangeIndex( value );
FacetRange<T> range = facetRangeList.get( facetIndex );
return new RangeFacetImpl<>( getFacetingName(), getFieldName(), facetMetadata.getSourceField().getAbsoluteName(), range, count, facetIndex );
}
@Override
public String toString() {
return "RangeFacetRequest{" +
"facetRangeList=" + facetRangeList +
"} " + super.toString();
}
private int findFacetRangeIndex(String value) {
int index = 0;
for ( FacetRange<T> facetRange : facetRangeList ) {
if ( facetRange.getRangeString().equals( value ) ) {
return index;
}
index++;
}
return -1;
}
}