org.hibernate.search.engine.impl.nullencoding.NumericFloatNullCodec Maven / Gradle / Ivy

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Core of the Object/Lucene mapper, query engine and index management

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/*
 * 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 .
 */
package org.hibernate.search.engine.impl.nullencoding;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.hibernate.search.bridge.LuceneOptions;

/**
 * @author Sanne Grinovero
 */
class NumericFloatNullCodec implements NullMarkerCodec {

	private final Float indexNullAs;

	NumericFloatNullCodec(final Float indexNullAs) {
		if ( indexNullAs == null ) {
			throw new NullPointerException( "The constructor parameter is mandatory" );
		}
		this.indexNullAs = indexNullAs;
	}

	@Override
	public String nullRepresentedAsString() {
		return indexNullAs.toString();
	}

	@Override
	public void encodeNullValue(String name, Document document, LuceneOptions luceneOptions) {
		luceneOptions.addNumericFieldToDocument( name, indexNullAs, document );
	}

	@Override
	public Query createNullMatchingQuery(String fieldName) {
		return NumericRangeQuery.newFloatRange( fieldName, indexNullAs, indexNullAs, true, true );
	}

	@Override
	public boolean representsNullValue(IndexableField field) {
		Number numericValue = field.numericValue();
		return indexNullAs.equals( numericValue );
	}

}