org.elasticsearch.index.mapper.core.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.core;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.SortedNumericDocValuesField;
import org.apache.lucene.index.IndexOptions;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.Booleans;
import org.elasticsearch.common.Strings;
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.index.mapper.FieldMapper;
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.elasticsearch.common.xcontent.support.XContentMapValues.nodeBooleanValue;
import static org.elasticsearch.index.mapper.MapperBuilders.booleanField;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseField;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseMultiField;
/**
* 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 final static BytesRef TRUE = new BytesRef("T");
public final static 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 Builder tokenized(boolean tokenized) {
if (tokenized) {
throw new IllegalArgumentException("bool field can't be tokenized");
}
return super.tokenized(tokenized);
}
@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 Mapper.Builder parse(String name, Map node, ParserContext parserContext) throws MapperParsingException {
BooleanFieldMapper.Builder builder = booleanField(name);
parseField(builder, name, node, parserContext);
for (Iterator> iterator = node.entrySet().iterator(); iterator.hasNext();) {
Map.Entry 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(nodeBooleanValue(propNode));
iterator.remove();
} else if (parseMultiField(builder, name, parserContext, propName, propNode)) {
iterator.remove();
}
}
return builder;
}
}
public static final class BooleanFieldType extends MappedFieldType {
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 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();
}
if (sValue.length() == 0) {
return Values.FALSE;
}
if (sValue.length() == 1 && sValue.charAt(0) == 'F') {
return Values.FALSE;
}
if (Booleans.parseBoolean(sValue, false)) {
return Values.TRUE;
}
return Values.FALSE;
}
@Override
public Boolean value(Object value) {
if (value == null) {
return Boolean.FALSE;
}
String sValue = value.toString();
if (sValue.length() == 0) {
return Boolean.FALSE;
}
if (sValue.length() == 1 && sValue.charAt(0) == 'F') {
return Boolean.FALSE;
}
if (Booleans.parseBoolean(sValue, false)) {
return Boolean.TRUE;
}
return Boolean.FALSE;
}
@Override
public Object valueForSearch(Object value) {
return value(value);
}
@Override
public boolean useTermQueryWithQueryString() {
return true;
}
}
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;
}
fields.add(new Field(fieldType().names().indexName(), value ? "T" : "F", fieldType()));
if (fieldType().hasDocValues()) {
fields.add(new SortedNumericDocValuesField(fieldType().names().indexName(), value ? 1 : 0));
}
}
@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());
}
}
}