org.elasticsearch.index.field.data.floats.FloatFieldDataComparator Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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 org.elasticsearch.index.field.data.floats;
import org.elasticsearch.index.cache.field.data.FieldDataCache;
import org.elasticsearch.index.field.data.FieldDataType;
import org.elasticsearch.index.field.data.support.NumericFieldDataComparator;
/**
* @author kimchy (shay.banon)
*/
// LUCENE MONITOR - Monitor against FieldComparator.Float
public class FloatFieldDataComparator extends NumericFieldDataComparator {
private final float[] values;
private float bottom;
public FloatFieldDataComparator(int numHits, String fieldName, FieldDataCache fieldDataCache) {
super(fieldName, fieldDataCache);
values = new float[numHits];
}
@Override public FieldDataType fieldDataType() {
return FieldDataType.DefaultTypes.FLOAT;
}
@Override public int compare(int slot1, int slot2) {
// TODO: are there sneaky non-branch ways to compute
// sign of float?
final float v1 = values[slot1];
final float v2 = values[slot2];
if (v1 > v2) {
return 1;
} else if (v1 < v2) {
return -1;
} else {
return 0;
}
}
@Override public int compareBottom(int doc) {
// TODO: are there sneaky non-branch ways to compute
// sign of float?
final float v2 = currentFieldData.floatValue(doc);
if (bottom > v2) {
return 1;
} else if (bottom < v2) {
return -1;
} else {
return 0;
}
}
@Override
public void copy(int slot, int doc) {
values[slot] = currentFieldData.floatValue(doc);
}
@Override public void setBottom(final int bottom) {
this.bottom = values[bottom];
}
@Override public Comparable value(int slot) {
return Float.valueOf(values[slot]);
}
}