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/*
* Licensed to STRATIO (C) under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. The STRATIO (C) 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 com.stratio.cassandra.lucene.schema.mapping;
import com.stratio.cassandra.lucene.IndexException;
import org.apache.cassandra.db.marshal.*;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FloatField;
import org.apache.lucene.document.NumericDocValuesField;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.SortField.Type;
import org.apache.lucene.util.NumericUtils;
import org.codehaus.jackson.annotate.JsonCreator;
/**
* A {@link Mapper} to map a float field.
*
* @author Andres de la Pena {@literal }
*/
public class FloatMapper extends SingleColumnMapper {
/** The default boost. */
public static final Float DEFAULT_BOOST = 1.0f;
/** The boost. */
public final Float boost;
/**
* Builds a new {@link FloatMapper} using the specified boost.
*
* @param field The name of the field.
* @param column The name of the column to be mapped.
* @param indexed If the field supports searching.
* @param sorted If the field supports sorting.
* @param validated If the field must be validated.
* @param boost The boost to be used.
*/
@JsonCreator
public FloatMapper(String field, String column, Boolean indexed, Boolean sorted, Boolean validated, Float boost) {
super(field,
column,
indexed,
sorted,
validated,
null,
Float.class,
AsciiType.instance,
ByteType.instance,
DecimalType.instance,
DoubleType.instance,
FloatType.instance,
IntegerType.instance,
Int32Type.instance,
LongType.instance,
ShortType.instance,
UTF8Type.instance);
this.boost = boost == null ? DEFAULT_BOOST : boost;
}
/** {@inheritDoc} */
@Override
protected Float doBase(String name, Object value) {
if (value instanceof Number) {
return ((Number) value).floatValue();
} else if (value instanceof String) {
try {
return Double.valueOf((String) value).floatValue();
} catch (NumberFormatException e) {
throw new IndexException("Field '%s' with value '%s' can not be parsed as float", name, value);
}
}
throw new IndexException("Field '%s' requires a float, but found '%s'", name, value);
}
/** {@inheritDoc} */
@Override
public Field indexedField(String name, Float value) {
FloatField field = new FloatField(name, value, STORE);
field.setBoost(boost);
return field;
}
/** {@inheritDoc} */
@Override
public Field sortedField(String name, Float value) {
int sortable = NumericUtils.floatToSortableInt(value);
return new NumericDocValuesField(name, sortable);
}
/** {@inheritDoc} */
@Override
public SortField sortField(String name, boolean reverse) {
return new SortField(name, Type.FLOAT, reverse);
}
/** {@inheritDoc} */
@Override
public String toString() {
return toStringHelper(this).add("boost", boost).toString();
}
}
