/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.reference.doc.lucene;
import io.crate.types.FloatType;
import org.apache.lucene.index.AtomicReaderContext;
import io.crate.types.DataType;
import io.crate.exceptions.GroupByOnArrayUnsupportedException;
import org.elasticsearch.index.fielddata.DoubleValues;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
public class FloatColumnReference extends FieldCacheExpression<IndexNumericFieldData, Float> {
DoubleValues values;
public FloatColumnReference(String columnName) {
super(columnName);
}
@Override
public Float value() {
switch (values.setDocument(docId)) {
case 0:
return null;
case 1:
return ((Double)values.nextValue()).floatValue();
default:
throw new GroupByOnArrayUnsupportedException(columnName());
}
}
@Override
public void setNextReader(AtomicReaderContext context) {
super.setNextReader(context);
values = indexFieldData.load(context).getDoubleValues();
}
@Override
public DataType returnType(){
return FloatType.INSTANCE;
}
@Override
public boolean equals(Object obj) {
if (obj == null)
return false;
if (obj == this)
return true;
if (!(obj instanceof FloatColumnReference))
return false;
return columnName.equals(((FloatColumnReference) obj).columnName);
}
@Override
public int hashCode() {
return columnName.hashCode();
}
}