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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.internal;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.SortedSetDocValuesField;
import org.apache.lucene.index.IndexOptions;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.ConstantScoreQuery;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.Version;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.ESLoggerFactory;
import org.elasticsearch.common.lucene.BytesRefs;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.fielddata.FieldDataType;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.Mapper;
import org.elasticsearch.index.mapper.MapperParsingException;
import org.elasticsearch.index.mapper.MetadataFieldMapper;
import org.elasticsearch.index.mapper.ParseContext;
import org.elasticsearch.index.mapper.Uid;
import org.elasticsearch.index.query.QueryShardContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseField;
/**
*
*/
public class TypeFieldMapper extends MetadataFieldMapper {
public static final String NAME = "_type";
public static final String CONTENT_TYPE = "_type";
public static class Defaults {
public static final String NAME = TypeFieldMapper.NAME;
public static final MappedFieldType FIELD_TYPE = new TypeFieldType();
static {
FIELD_TYPE.setIndexOptions(IndexOptions.DOCS);
FIELD_TYPE.setTokenized(false);
FIELD_TYPE.setStored(false);
FIELD_TYPE.setOmitNorms(true);
FIELD_TYPE.setIndexAnalyzer(Lucene.KEYWORD_ANALYZER);
FIELD_TYPE.setSearchAnalyzer(Lucene.KEYWORD_ANALYZER);
FIELD_TYPE.setNames(new MappedFieldType.Names(NAME));
FIELD_TYPE.freeze();
}
}
public static class Builder extends MetadataFieldMapper.Builder<Builder, TypeFieldMapper> {
public Builder(MappedFieldType existing) {
super(Defaults.NAME, existing == null ? Defaults.FIELD_TYPE : existing, Defaults.FIELD_TYPE);
indexName = Defaults.NAME;
}
@Override
public TypeFieldMapper build(BuilderContext context) {
fieldType.setNames(buildNames(context));
return new TypeFieldMapper(fieldType, context.indexSettings());
}
}
public static class TypeParser implements MetadataFieldMapper.TypeParser {
@Override
public MetadataFieldMapper.Builder parse(String name, Map<String, Object> node, ParserContext parserContext) throws MapperParsingException {
if (parserContext.indexVersionCreated().onOrAfter(Version.V_2_0_0_beta1)) {
throw new MapperParsingException(NAME + " is not configurable");
}
Builder builder = new Builder(parserContext.mapperService().fullName(NAME));
parseField(builder, builder.name, node, parserContext);
return builder;
}
@Override
public MetadataFieldMapper getDefault(Settings indexSettings, MappedFieldType fieldType, String typeName) {
return new TypeFieldMapper(indexSettings, fieldType);
}
}
static final class TypeFieldType extends MappedFieldType {
public TypeFieldType() {
setFieldDataType(new FieldDataType("string"));
}
protected TypeFieldType(TypeFieldType ref) {
super(ref);
}
@Override
public MappedFieldType clone() {
return new TypeFieldType(this);
}
@Override
public String typeName() {
return CONTENT_TYPE;
}
@Override
public String value(Object value) {
if (value == null) {
return null;
}
return value.toString();
}
@Override
public boolean useTermQueryWithQueryString() {
return true;
}
@Override
public Query termQuery(Object value, @Nullable QueryShardContext context) {
if (indexOptions() == IndexOptions.NONE) {
return new ConstantScoreQuery(new PrefixQuery(new Term(UidFieldMapper.NAME, Uid.typePrefixAsBytes(BytesRefs.toBytesRef(value)))));
}
return new ConstantScoreQuery(new TermQuery(createTerm(value)));
}
}
private TypeFieldMapper(Settings indexSettings, MappedFieldType existing) {
this(existing == null ? defaultFieldType(indexSettings) : existing.clone(),
indexSettings);
}
private TypeFieldMapper(MappedFieldType fieldType, Settings indexSettings) {
super(NAME, fieldType, defaultFieldType(indexSettings), indexSettings);
}
private static MappedFieldType defaultFieldType(Settings indexSettings) {
MappedFieldType defaultFieldType = Defaults.FIELD_TYPE.clone();
Version indexCreated = Version.indexCreated(indexSettings);
if (indexCreated.onOrAfter(Version.V_2_1_0)) {
defaultFieldType.setHasDocValues(true);
}
return defaultFieldType;
}
@Override
public void preParse(ParseContext context) throws IOException {
super.parse(context);
}
@Override
public void postParse(ParseContext context) throws IOException {
}
@Override
public Mapper parse(ParseContext context) throws IOException {
// we parse in pre parse
return null;
}
@Override
protected void parseCreateField(ParseContext context, List<Field> fields) throws IOException {
if (fieldType().indexOptions() == IndexOptions.NONE && !fieldType().stored()) {
return;
}
fields.add(new Field(fieldType().names().indexName(), context.type(), fieldType()));
if (fieldType().hasDocValues()) {
fields.add(new SortedSetDocValuesField(fieldType().names().indexName(), new BytesRef(context.type())));
}
}
@Override
protected String contentType() {
return CONTENT_TYPE;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
if (indexCreatedBefore2x == false) {
return builder;
}
boolean includeDefaults = params.paramAsBoolean("include_defaults", false);
// if all are defaults, no sense to write it at all
boolean indexed = fieldType().indexOptions() != IndexOptions.NONE;
boolean defaultIndexed = Defaults.FIELD_TYPE.indexOptions() != IndexOptions.NONE;
if (!includeDefaults && fieldType().stored() == Defaults.FIELD_TYPE.stored() && indexed == defaultIndexed) {
return builder;
}
builder.startObject(CONTENT_TYPE);
if (includeDefaults || fieldType().stored() != Defaults.FIELD_TYPE.stored()) {
builder.field("store", fieldType().stored());
}
if (includeDefaults || indexed != defaultIndexed) {
builder.field("index", indexTokenizeOptionToString(indexed, fieldType().tokenized()));
}
builder.endObject();
return builder;
}
@Override
protected void doMerge(Mapper mergeWith, boolean updateAllTypes) {
// do nothing here, no merging, but also no exception
}
}
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