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/*
* Licensed to Elasticsearch 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.mapper;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.DoublePoint;
import org.apache.lucene.document.LongPoint;
import org.apache.lucene.document.SortedNumericDocValuesField;
import org.apache.lucene.document.StoredField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.IOUtils;
import org.elasticsearch.Version;
import org.elasticsearch.action.fieldstats.FieldStats;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicNumericFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData;
import org.elasticsearch.index.fielddata.SortedNumericDoubleValues;
import org.junit.Before;
import java.io.IOException;
import java.util.Arrays;
public class ScaledFloatFieldTypeTests extends FieldTypeTestCase {
@Override
protected MappedFieldType createDefaultFieldType() {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setScalingFactor(100);
return ft;
}
@Before
public void setupProperties() {
addModifier(new Modifier("scaling_factor", false) {
@Override
public void modify(MappedFieldType ft) {
ScaledFloatFieldMapper.ScaledFloatFieldType tft = (ScaledFloatFieldMapper.ScaledFloatFieldType)ft;
tft.setScalingFactor(10);
}
@Override
public void normalizeOther(MappedFieldType other) {
super.normalizeOther(other);
((ScaledFloatFieldMapper.ScaledFloatFieldType) other).setScalingFactor(100);
}
});
}
public void testTermQuery() {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setName("scaled_float");
ft.setScalingFactor(0.1 + randomDouble() * 100);
double value = (randomDouble() * 2 - 1) * 10000;
long scaledValue = Math.round(value * ft.getScalingFactor());
assertEquals(LongPoint.newExactQuery("scaled_float", scaledValue), ft.termQuery(value, null));
}
public void testTermsQuery() {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setName("scaled_float");
ft.setScalingFactor(0.1 + randomDouble() * 100);
double value1 = (randomDouble() * 2 - 1) * 10000;
long scaledValue1 = Math.round(value1 * ft.getScalingFactor());
double value2 = (randomDouble() * 2 - 1) * 10000;
long scaledValue2 = Math.round(value2 * ft.getScalingFactor());
assertEquals(
LongPoint.newSetQuery("scaled_float", scaledValue1, scaledValue2),
ft.termsQuery(Arrays.asList(value1, value2), null));
}
public void testRangeQuery() throws IOException {
// make sure the accuracy loss of scaled floats only occurs at index time
// this test checks that searching scaled floats yields the same results as
// searching doubles that are rounded to the closest half float
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setName("scaled_float");
ft.setScalingFactor(0.1 + randomDouble() * 100);
Directory dir = newDirectory();
IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(null));
final int numDocs = 1000;
for (int i = 0; i < numDocs; ++i) {
Document doc = new Document();
double value = (randomDouble() * 2 - 1) * 10000;
long scaledValue = Math.round(value * ft.getScalingFactor());
double rounded = scaledValue / ft.getScalingFactor();
doc.add(new LongPoint("scaled_float", scaledValue));
doc.add(new DoublePoint("double", rounded));
w.addDocument(doc);
}
final DirectoryReader reader = DirectoryReader.open(w);
w.close();
IndexSearcher searcher = newSearcher(reader);
final int numQueries = 1000;
for (int i = 0; i < numQueries; ++i) {
Double l = randomBoolean() ? null : (randomDouble() * 2 - 1) * 10000;
Double u = randomBoolean() ? null : (randomDouble() * 2 - 1) * 10000;
boolean includeLower = randomBoolean();
boolean includeUpper = randomBoolean();
Query doubleQ = NumberFieldMapper.NumberType.DOUBLE.rangeQuery("double", l, u, includeLower, includeUpper, false);
Query scaledFloatQ = ft.rangeQuery(l, u, includeLower, includeUpper, null);
assertEquals(searcher.count(doubleQ), searcher.count(scaledFloatQ));
}
IOUtils.close(reader, dir);
}
public void testValueForSearch() {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setName("scaled_float");
ft.setScalingFactor(0.1 + randomDouble() * 100);
assertNull(ft.valueForDisplay(null));
assertEquals(10/ft.getScalingFactor(), ft.valueForDisplay(10L));
}
public void testStats() throws IOException {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setName("scaled_float");
ft.setScalingFactor(0.1 + randomDouble() * 100);
Directory dir = newDirectory();
IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(null));
try (DirectoryReader reader = DirectoryReader.open(w)) {
assertNull(ft.stats(reader));
}
Document doc = new Document();
doc.add(new StoredField("scaled_float", -1));
w.addDocument(doc);
try (DirectoryReader reader = DirectoryReader.open(w)) {
// field exists, but has no point values
FieldStats<?> stats = ft.stats(reader);
assertFalse(stats.hasMinMax());
assertNull(stats.getMinValue());
assertNull(stats.getMaxValue());
}
LongPoint point = new LongPoint("scaled_float", -1);
doc.add(point);
w.addDocument(doc);
point.setLongValue(10);
w.addDocument(doc);
try (DirectoryReader reader = DirectoryReader.open(w)) {
FieldStats<?> stats = ft.stats(reader);
assertEquals(-1/ft.getScalingFactor(), stats.getMinValue());
assertEquals(10/ft.getScalingFactor(), stats.getMaxValue());
assertEquals(3, stats.getMaxDoc());
}
w.deleteAll();
try (DirectoryReader reader = DirectoryReader.open(w)) {
assertNull(ft.stats(reader));
}
IOUtils.close(w, dir);
}
public void testFieldData() throws IOException {
ScaledFloatFieldMapper.ScaledFloatFieldType ft = new ScaledFloatFieldMapper.ScaledFloatFieldType();
ft.setScalingFactor(0.1 + randomDouble() * 100);
Directory dir = newDirectory();
IndexWriter w = new IndexWriter(dir, new IndexWriterConfig(null));
Document doc = new Document();
doc.add(new SortedNumericDocValuesField("scaled_float1", 10));
doc.add(new SortedNumericDocValuesField("scaled_float2", 5));
doc.add(new SortedNumericDocValuesField("scaled_float2", 12));
w.addDocument(doc);
try (DirectoryReader reader = DirectoryReader.open(w)) {
IndexMetaData indexMetadata = new IndexMetaData.Builder("index").settings(
Settings.builder()
.put("index.version.created", Version.CURRENT)
.put("index.number_of_shards", 1)
.put("index.number_of_replicas", 0).build()).build();
IndexSettings indexSettings = new IndexSettings(indexMetadata, Settings.EMPTY);
// single-valued
ft.setName("scaled_float1");
IndexNumericFieldData fielddata = (IndexNumericFieldData) ft.fielddataBuilder().build(indexSettings, ft, null, null, null);
assertEquals(fielddata.getNumericType(), IndexNumericFieldData.NumericType.DOUBLE);
AtomicNumericFieldData leafFieldData = fielddata.load(reader.leaves().get(0));
SortedNumericDoubleValues values = leafFieldData.getDoubleValues();
assertTrue(values.advanceExact(0));
assertEquals(1, values.docValueCount());
assertEquals(10/ft.getScalingFactor(), values.nextValue(), 10e-5);
// multi-valued
ft.setName("scaled_float2");
fielddata = (IndexNumericFieldData) ft.fielddataBuilder().build(indexSettings, ft, null, null, null);
leafFieldData = fielddata.load(reader.leaves().get(0));
values = leafFieldData.getDoubleValues();
assertTrue(values.advanceExact(0));
assertEquals(2, values.docValueCount());
assertEquals(5/ft.getScalingFactor(), values.nextValue(), 10e-5);
assertEquals(12/ft.getScalingFactor(), values.nextValue(), 10e-5);
}
IOUtils.close(w, dir);
}
}
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