org.elasticsearch.index.mapper.BooleanFieldMapper 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 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.Field;
import org.apache.lucene.document.SortedNumericDocValuesField;
import org.apache.lucene.index.IndexOptions;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.DocValuesFieldExistsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TermRangeQuery;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.support.XContentMapValues;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexNumericFieldData.NumericType;
import org.elasticsearch.index.fielddata.plain.DocValuesIndexFieldData;
import org.elasticsearch.index.query.QueryShardContext;
import org.elasticsearch.search.DocValueFormat;
import java.io.IOException;
import java.time.ZoneId;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.index.mapper.TypeParsers.parseField;
/**
* A field mapper for boolean fields.
*/
public class BooleanFieldMapper extends FieldMapper {
public static final String CONTENT_TYPE = "boolean";
public static class Defaults {
public static final MappedFieldType FIELD_TYPE = new BooleanFieldType();
static {
FIELD_TYPE.setOmitNorms(true);
FIELD_TYPE.setIndexOptions(IndexOptions.DOCS);
FIELD_TYPE.setTokenized(false);
FIELD_TYPE.setIndexAnalyzer(Lucene.KEYWORD_ANALYZER);
FIELD_TYPE.setSearchAnalyzer(Lucene.KEYWORD_ANALYZER);
FIELD_TYPE.freeze();
}
}
public static class Values {
public static final BytesRef TRUE = new BytesRef("T");
public static final BytesRef FALSE = new BytesRef("F");
}
public static class Builder extends FieldMapper.Builder {
public Builder(String name) {
super(name, Defaults.FIELD_TYPE, Defaults.FIELD_TYPE);
this.builder = this;
}
@Override
public BooleanFieldMapper build(BuilderContext context) {
setupFieldType(context);
return new BooleanFieldMapper(name, fieldType, defaultFieldType,
context.indexSettings(), multiFieldsBuilder.build(this, context), copyTo);
}
}
public static class TypeParser implements Mapper.TypeParser {
@Override
public BooleanFieldMapper.Builder parse(String name, Map node, ParserContext parserContext)
throws MapperParsingException {
BooleanFieldMapper.Builder builder = new BooleanFieldMapper.Builder(name);
parseField(builder, name, node, parserContext);
for (Iterator> iterator = node.entrySet().iterator(); iterator.hasNext();) {
Map.Entry entry = iterator.next();
String propName = 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(XContentMapValues.nodeBooleanValue(propNode, name + ".null_value"));
iterator.remove();
}
}
return builder;
}
}
public static final class BooleanFieldType extends TermBasedFieldType {
public BooleanFieldType() {}
protected BooleanFieldType(BooleanFieldType ref) {
super(ref);
}
@Override
public MappedFieldType clone() {
return new BooleanFieldType(this);
}
@Override
public String typeName() {
return CONTENT_TYPE;
}
@Override
public Query existsQuery(QueryShardContext context) {
if (hasDocValues()) {
return new DocValuesFieldExistsQuery(name());
} else {
return new TermQuery(new Term(FieldNamesFieldMapper.NAME, name()));
}
}
@Override
public Boolean nullValue() {
return (Boolean)super.nullValue();
}
@Override
public BytesRef indexedValueForSearch(Object value) {
if (value == null) {
return Values.FALSE;
}
if (value instanceof Boolean) {
return ((Boolean) value) ? Values.TRUE : Values.FALSE;
}
String sValue;
if (value instanceof BytesRef) {
sValue = ((BytesRef) value).utf8ToString();
} else {
sValue = value.toString();
}
switch (sValue) {
case "true":
return Values.TRUE;
case "false":
return Values.FALSE;
default:
throw new IllegalArgumentException("Can't parse boolean value [" +
sValue + "], expected [true] or [false]");
}
}
@Override
public Boolean valueForDisplay(Object value) {
if (value == null) {
return null;
}
switch(value.toString()) {
case "F":
return false;
case "T":
return true;
default:
throw new IllegalArgumentException("Expected [T] or [F] but got [" + value + "]");
}
}
@Override
public IndexFieldData.Builder fielddataBuilder(String fullyQualifiedIndexName) {
failIfNoDocValues();
return new DocValuesIndexFieldData.Builder().numericType(NumericType.BOOLEAN);
}
@Override
public DocValueFormat docValueFormat(@Nullable String format, ZoneId timeZone) {
if (format != null) {
throw new IllegalArgumentException("Field [" + name() + "] of type [" + typeName() + "] does not support custom formats");
}
if (timeZone != null) {
throw new IllegalArgumentException("Field [" + name() + "] of type [" + typeName()
+ "] does not support custom time zones");
}
return DocValueFormat.BOOLEAN;
}
@Override
public Query rangeQuery(Object lowerTerm, Object upperTerm, boolean includeLower, boolean includeUpper, QueryShardContext context) {
failIfNotIndexed();
return new TermRangeQuery(name(),
lowerTerm == null ? null : indexedValueForSearch(lowerTerm),
upperTerm == null ? null : indexedValueForSearch(upperTerm),
includeLower, includeUpper);
}
}
protected BooleanFieldMapper(String simpleName, MappedFieldType fieldType, MappedFieldType defaultFieldType,
Settings indexSettings, MultiFields multiFields, CopyTo copyTo) {
super(simpleName, fieldType, defaultFieldType, indexSettings, multiFields, copyTo);
}
@Override
public BooleanFieldType fieldType() {
return (BooleanFieldType) super.fieldType();
}
@Override
protected void parseCreateField(ParseContext context, List fields) throws IOException {
if (fieldType().indexOptions() == IndexOptions.NONE && !fieldType().stored() && !fieldType().hasDocValues()) {
return;
}
Boolean value = context.parseExternalValue(Boolean.class);
if (value == null) {
XContentParser.Token token = context.parser().currentToken();
if (token == XContentParser.Token.VALUE_NULL) {
if (fieldType().nullValue() != null) {
value = fieldType().nullValue();
}
} else {
value = context.parser().booleanValue();
}
}
if (value == null) {
return;
}
if (fieldType().indexOptions() != IndexOptions.NONE || fieldType().stored()) {
fields.add(new Field(fieldType().name(), value ? "T" : "F", fieldType()));
}
if (fieldType().hasDocValues()) {
fields.add(new SortedNumericDocValuesField(fieldType().name(), value ? 1 : 0));
} else {
createFieldNamesField(context, fields);
}
}
@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().nullValue() != null) {
builder.field("null_value", fieldType().nullValue());
}
}
}