/*
* 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.core;
import com.carrotsearch.hppc.FloatArrayList;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexOptions;
import org.apache.lucene.index.Terms;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefBuilder;
import org.apache.lucene.util.NumericUtils;
import org.elasticsearch.action.fieldstats.FieldStats;
import org.elasticsearch.common.Explicit;
import org.elasticsearch.common.Numbers;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.logging.DeprecationLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.Fuzziness;
import org.elasticsearch.common.util.ByteUtils;
import org.elasticsearch.common.util.CollectionUtils;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.analysis.NamedAnalyzer;
import org.elasticsearch.index.analysis.NumericFloatAnalyzer;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.Mapper;
import org.elasticsearch.index.mapper.MapperParsingException;
import org.elasticsearch.index.mapper.ParseContext;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import static org.apache.lucene.util.NumericUtils.floatToSortableInt;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeFloatValue;
import static org.elasticsearch.index.mapper.MapperBuilders.floatField;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseNumberField;
/**
*
*/
public class FloatFieldMapper extends NumberFieldMapper {
public static final String CONTENT_TYPE = "float";
public static class Defaults extends NumberFieldMapper.Defaults {
public static final MappedFieldType FIELD_TYPE = new FloatFieldType();
static {
FIELD_TYPE.freeze();
}
}
public static class Builder extends NumberFieldMapper.Builder<Builder, FloatFieldMapper> {
public Builder(String name) {
super(name, Defaults.FIELD_TYPE, Defaults.PRECISION_STEP_32_BIT);
builder = this;
}
@Override
public FloatFieldMapper build(BuilderContext context) {
setupFieldType(context);
FloatFieldMapper fieldMapper = new FloatFieldMapper(name, fieldType, defaultFieldType, ignoreMalformed(context), coerce(context),
context.indexSettings(), multiFieldsBuilder.build(this, context), copyTo);
return (FloatFieldMapper) fieldMapper.includeInAll(includeInAll);
}
@Override
protected NamedAnalyzer makeNumberAnalyzer(int precisionStep) {
return NumericFloatAnalyzer.buildNamedAnalyzer(precisionStep);
}
@Override
protected int maxPrecisionStep() {
return 32;
}
}
public static class TypeParser implements Mapper.TypeParser {
@Override
public Mapper.Builder parse(String name, Map<String, Object> node, ParserContext parserContext) throws MapperParsingException {
FloatFieldMapper.Builder builder = floatField(name);
parseNumberField(builder, name, node, parserContext);
for (Iterator<Map.Entry<String, Object>> iterator = node.entrySet().iterator(); iterator.hasNext();) {
Map.Entry<String, Object> entry = iterator.next();
String propName = Strings.toUnderscoreCase(entry.getKey());
Object propNode = entry.getValue();
if (propName.equals("null_value")) {
if (propNode == null) {
throw new MapperParsingException("Property [null_value] cannot be null.");
}
builder.nullValue(nodeFloatValue(propNode));
iterator.remove();
}
}
return builder;
}
}
static final class FloatFieldType extends NumberFieldType {
private static final DeprecationLogger DEPRECATION_LOGGER = new DeprecationLogger(Loggers.getLogger(FloatFieldType.class));
public FloatFieldType() {
super(NumericType.FLOAT);
}
protected FloatFieldType(FloatFieldType ref) {
super(ref);
}
@Override
public NumberFieldType clone() {
return new FloatFieldType(this);
}
@Override
public String typeName() {
return CONTENT_TYPE;
}
@Override
public Float nullValue() {
return (Float)super.nullValue();
}
@Override
public Float value(Object value) {
if (value == null) {
return null;
}
if (value instanceof Number) {
return ((Number) value).floatValue();
}
if (value instanceof BytesRef) {
return Numbers.bytesToFloat((BytesRef) value);
}
return Float.parseFloat(value.toString());
}
@Override
public BytesRef indexedValueForSearch(Object value) {
int intValue = NumericUtils.floatToSortableInt(parseValue(value));
BytesRefBuilder bytesRef = new BytesRefBuilder();
NumericUtils.intToPrefixCoded(intValue, 0, bytesRef); // 0 because of exact match
return bytesRef.get();
}
@Override
public Query rangeQuery(Object lowerTerm, Object upperTerm, boolean includeLower, boolean includeUpper) {
return NumericRangeQuery.newFloatRange(names().indexName(), numericPrecisionStep(),
lowerTerm == null ? null : parseValue(lowerTerm),
upperTerm == null ? null : parseValue(upperTerm),
includeLower, includeUpper);
}
@Override
public Query fuzzyQuery(Object value, Fuzziness fuzziness, int prefixLength, int maxExpansions, boolean transpositions) {
DEPRECATION_LOGGER.deprecated("Fuzzy query on field [{}] of type [{}] is deprecated. The next version will only support it " +
"on text/keyword fields", names().fullName(), typeName());
float iValue = parseValue(value);
final float iSim = fuzziness.asFloat();
return NumericRangeQuery.newFloatRange(names().indexName(), numericPrecisionStep(),
iValue - iSim,
iValue + iSim,
true, true);
}
@Override
public FieldStats stats(Terms terms, int maxDoc) throws IOException {
float minValue = NumericUtils.sortableIntToFloat(NumericUtils.getMinInt(terms));
float maxValue = NumericUtils.sortableIntToFloat(NumericUtils.getMaxInt(terms));
return new FieldStats.Float(
maxDoc, terms.getDocCount(), terms.getSumDocFreq(), terms.getSumTotalTermFreq(), minValue, maxValue
);
}
}
protected FloatFieldMapper(String simpleName, MappedFieldType fieldType, MappedFieldType defaultFieldType,
Explicit<Boolean> ignoreMalformed, Explicit<Boolean> coerce,
Settings indexSettings, MultiFields multiFields, CopyTo copyTo) {
super(simpleName, fieldType, defaultFieldType, ignoreMalformed, coerce, indexSettings, multiFields, copyTo);
}
@Override
public FloatFieldType fieldType() {
return (FloatFieldType) super.fieldType();
}
private static float parseValue(Object value) {
if (value instanceof Number) {
return ((Number) value).floatValue();
}
if (value instanceof BytesRef) {
return Float.parseFloat(((BytesRef) value).utf8ToString());
}
return Float.parseFloat(value.toString());
}
@Override
protected boolean customBoost() {
return true;
}
@Override
public void innerCreateField(ParseContext context, Object object) throws IOException {
Float value = (Float)object;
float boost = fieldType().boost();
if (value == null) {
if (fieldType().nullValue() == null) {
return;
}
value = fieldType().nullValue();
}
if (context.includeInAll(includeInAll, this)) {
context.allEntries().addText(fieldType().names().fullName(), Float.toString(value), boost);
}
if (fieldType().indexOptions() != IndexOptions.NONE || fieldType().stored()) {
CustomFloatNumericField field = new CustomFloatNumericField(value, fieldType());
field.setBoost(boost);
context.doc().add(field);
}
if (fieldType().hasDocValues()) {
if (useSortedNumericDocValues) {
addDocValue(context, floatToSortableInt(value));
} else {
CustomFloatNumericDocValuesField field = (CustomFloatNumericDocValuesField) context.doc().getByKey(fieldType().names().indexName());
if (field != null) {
field.add(value);
} else {
field = new CustomFloatNumericDocValuesField(fieldType().names().indexName(), value);
context.doc().addWithKey(fieldType().names().indexName(), field);
}
}
}
}
@Override
protected void innerParseCreateField(ParseContext context, List<Field> fields) throws IOException {
float value;
float boost = fieldType().boost();
if (context.externalValueSet()) {
Object externalValue = context.externalValue();
if (externalValue == null) {
if (fieldType().nullValue() == null) {
return;
}
value = fieldType().nullValue();
} else if (externalValue instanceof String) {
String sExternalValue = (String) externalValue;
if (sExternalValue.length() == 0) {
if (fieldType().nullValue() == null) {
return;
}
value = fieldType().nullValue();
} else {
value = Float.parseFloat(sExternalValue);
}
} else {
value = ((Number) externalValue).floatValue();
}
if (context.includeInAll(includeInAll, this)) {
context.allEntries().addText(fieldType().names().fullName(), Float.toString(value), boost);
}
} else {
XContentParser parser = context.parser();
if (parser.currentToken() == XContentParser.Token.VALUE_NULL ||
(parser.currentToken() == XContentParser.Token.VALUE_STRING && parser.textLength() == 0)) {
if (fieldType().nullValue() == null) {
return;
}
value = fieldType().nullValue();
if (fieldType().nullValueAsString() != null && (context.includeInAll(includeInAll, this))) {
context.allEntries().addText(fieldType().names().fullName(), fieldType().nullValueAsString(), boost);
}
} else if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
XContentParser.Token token;
String currentFieldName = null;
Float objValue = fieldType().nullValue();
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else {
if ("value".equals(currentFieldName) || "_value".equals(currentFieldName)) {
if (parser.currentToken() != XContentParser.Token.VALUE_NULL) {
objValue = parser.floatValue(coerce.value());
}
} else if ("boost".equals(currentFieldName) || "_boost".equals(currentFieldName)) {
boost = parser.floatValue();
} else {
throw new IllegalArgumentException("unknown property [" + currentFieldName + "]");
}
}
}
if (objValue == null) {
// no value
return;
}
value = objValue;
} else {
value = parser.floatValue(coerce.value());
if (context.includeInAll(includeInAll, this)) {
context.allEntries().addText(fieldType().names().fullName(), parser.text(), boost);
}
}
}
if (fieldType().indexOptions() != IndexOptions.NONE || fieldType().stored()) {
CustomFloatNumericField field = new CustomFloatNumericField(value, fieldType());
field.setBoost(boost);
fields.add(field);
}
if (fieldType().hasDocValues()) {
if (useSortedNumericDocValues) {
addDocValue(context, fields, floatToSortableInt(value));
} else {
CustomFloatNumericDocValuesField field = (CustomFloatNumericDocValuesField) context.doc().getByKey(fieldType().names().indexName());
if (field != null) {
field.add(value);
} else {
field = new CustomFloatNumericDocValuesField(fieldType().names().indexName(), value);
context.doc().addWithKey(fieldType().names().indexName(), field);
}
}
}
}
@Override
protected String contentType() {
return CONTENT_TYPE;
}
@Override
protected void doXContentBody(XContentBuilder builder, boolean includeDefaults, Params params) throws IOException {
super.doXContentBody(builder, includeDefaults, params);
if (includeDefaults || fieldType().numericPrecisionStep() != Defaults.PRECISION_STEP_32_BIT) {
builder.field("precision_step", fieldType().numericPrecisionStep());
}
if (includeDefaults || fieldType().nullValue() != null) {
builder.field("null_value", fieldType().nullValue());
}
if (includeInAll != null) {
builder.field("include_in_all", includeInAll);
} else if (includeDefaults) {
builder.field("include_in_all", false);
}
}
public static class CustomFloatNumericField extends CustomNumericField {
private final float number;
public CustomFloatNumericField(float number, NumberFieldType fieldType) {
super(number, fieldType);
this.number = number;
}
@Override
public TokenStream tokenStream(Analyzer analyzer, TokenStream previous) {
if (fieldType().indexOptions() != IndexOptions.NONE) {
return getCachedStream().setFloatValue(number);
}
return null;
}
@Override
public String numericAsString() {
return Float.toString(number);
}
}
public static class CustomFloatNumericDocValuesField extends CustomNumericDocValuesField {
private final FloatArrayList values;
public CustomFloatNumericDocValuesField(String name, float value) {
super(name);
values = new FloatArrayList();
add(value);
}
public void add(float value) {
values.add(value);
}
@Override
public BytesRef binaryValue() {
CollectionUtils.sortAndDedup(values);
final byte[] bytes = new byte[values.size() * 4];
for (int i = 0; i < values.size(); ++i) {
ByteUtils.writeFloatLE(values.get(i), bytes, i * 4);
}
return new BytesRef(bytes);
}
}
}