/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.longs;
import org.elasticsearch.index.cache.field.data.FieldDataCache;
import org.elasticsearch.index.field.data.FieldDataType;
import org.elasticsearch.index.field.data.support.NumericFieldDataComparator;
/**
*
*/
// LUCENE MONITOR - Monitor against FieldComparator.Long
public class LongFieldDataComparator extends NumericFieldDataComparator {
private final long[] values;
private long bottom;
public LongFieldDataComparator(int numHits, String fieldName, FieldDataCache fieldDataCache) {
super(fieldName, fieldDataCache);
values = new long[numHits];
}
@Override
public FieldDataType fieldDataType() {
return FieldDataType.DefaultTypes.LONG;
}
@Override
public int compare(int slot1, int slot2) {
// TODO: there are sneaky non-branch ways to compute
// -1/+1/0 sign
final long v1 = values[slot1];
final long v2 = values[slot2];
if (v1 > v2) {
return 1;
} else if (v1 < v2) {
return -1;
} else {
return 0;
}
}
@Override
public int compareBottom(int doc) {
// TODO: there are sneaky non-branch ways to compute
// -1/+1/0 sign
// final long v2 = currentReaderValues[doc];
final long v2 = currentFieldData.longValue(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.longValue(doc);
}
@Override
public void setBottom(final int bottom) {
this.bottom = values[bottom];
}
@Override
public Comparable value(int slot) {
return Long.valueOf(values[slot]);
}
}