org.elasticsearch.index.mapper.DocumentMapper 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.StoredField;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreMode;
import org.apache.lucene.search.Scorer;
import org.apache.lucene.search.Weight;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.ElasticsearchGenerationException;
import org.elasticsearch.Version;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.compress.CompressedXContent;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.ToXContentFragment;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.analysis.IndexAnalyzers;
import org.elasticsearch.index.mapper.MetadataFieldMapper.TypeParser;
import org.elasticsearch.index.query.QueryShardContext;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Stream;
public class DocumentMapper implements ToXContentFragment {
public static class Builder {
private Map, MetadataFieldMapper> metadataMappers = new LinkedHashMap<>();
private final RootObjectMapper rootObjectMapper;
private Map meta;
private final Mapper.BuilderContext builderContext;
public Builder(RootObjectMapper.Builder builder, MapperService mapperService) {
final Settings indexSettings = mapperService.getIndexSettings().getSettings();
this.builderContext = new Mapper.BuilderContext(indexSettings, new ContentPath(1));
this.rootObjectMapper = builder.build(builderContext);
final String type = rootObjectMapper.name();
final DocumentMapper existingMapper = mapperService.documentMapper(type);
final Version indexCreatedVersion = mapperService.getIndexSettings().getIndexVersionCreated();
final Map metadataMapperParsers =
mapperService.mapperRegistry.getMetadataMapperParsers(indexCreatedVersion);
for (Map.Entry entry : metadataMapperParsers.entrySet()) {
final String name = entry.getKey();
final MetadataFieldMapper existingMetadataMapper = existingMapper == null
? null
: (MetadataFieldMapper) existingMapper.mappers().getMapper(name);
final MetadataFieldMapper metadataMapper;
if (existingMetadataMapper == null) {
final TypeParser parser = entry.getValue();
metadataMapper = parser.getDefault(mapperService.fullName(name),
mapperService.documentMapperParser().parserContext(builder.name()));
} else {
metadataMapper = existingMetadataMapper;
}
metadataMappers.put(metadataMapper.getClass(), metadataMapper);
}
}
public Builder meta(Map meta) {
this.meta = meta;
return this;
}
public Builder put(MetadataFieldMapper.Builder mapper) {
MetadataFieldMapper metadataMapper = mapper.build(builderContext);
metadataMappers.put(metadataMapper.getClass(), metadataMapper);
return this;
}
public DocumentMapper build(MapperService mapperService) {
Objects.requireNonNull(rootObjectMapper, "Mapper builder must have the root object mapper set");
Mapping mapping = new Mapping(
mapperService.getIndexSettings().getIndexVersionCreated(),
rootObjectMapper,
metadataMappers.values().toArray(new MetadataFieldMapper[metadataMappers.values().size()]),
meta);
return new DocumentMapper(mapperService, mapping);
}
}
private final MapperService mapperService;
private final String type;
private final Text typeText;
private final CompressedXContent mappingSource;
private final Mapping mapping;
private final DocumentParser documentParser;
private final DocumentFieldMappers fieldMappers;
private final Map objectMappers;
private final boolean hasNestedObjects;
private final MetadataFieldMapper[] deleteTombstoneMetadataFieldMappers;
private final MetadataFieldMapper[] noopTombstoneMetadataFieldMappers;
public DocumentMapper(MapperService mapperService, Mapping mapping) {
this.mapperService = mapperService;
this.type = mapping.root().name();
this.typeText = new Text(this.type);
final IndexSettings indexSettings = mapperService.getIndexSettings();
this.mapping = mapping;
this.documentParser = new DocumentParser(indexSettings, mapperService.documentMapperParser(), this);
// collect all the mappers for this type
List newObjectMappers = new ArrayList<>();
List newFieldMappers = new ArrayList<>();
List newFieldAliasMappers = new ArrayList<>();
for (MetadataFieldMapper metadataMapper : this.mapping.metadataMappers) {
if (metadataMapper instanceof FieldMapper) {
newFieldMappers.add(metadataMapper);
}
}
MapperUtils.collect(this.mapping.root,
newObjectMappers, newFieldMappers, newFieldAliasMappers);
final IndexAnalyzers indexAnalyzers = mapperService.getIndexAnalyzers();
this.fieldMappers = new DocumentFieldMappers(newFieldMappers,
newFieldAliasMappers,
indexAnalyzers.getDefaultIndexAnalyzer(),
indexAnalyzers.getDefaultSearchAnalyzer(),
indexAnalyzers.getDefaultSearchQuoteAnalyzer());
Map builder = new HashMap<>();
for (ObjectMapper objectMapper : newObjectMappers) {
ObjectMapper previous = builder.put(objectMapper.fullPath(), objectMapper);
if (previous != null) {
throw new IllegalStateException("duplicate key " + objectMapper.fullPath() + " encountered");
}
}
boolean hasNestedObjects = false;
this.objectMappers = Collections.unmodifiableMap(builder);
for (ObjectMapper objectMapper : newObjectMappers) {
if (objectMapper.nested().isNested()) {
hasNestedObjects = true;
}
}
this.hasNestedObjects = hasNestedObjects;
try {
mappingSource = new CompressedXContent(this, XContentType.JSON, ToXContent.EMPTY_PARAMS);
} catch (Exception e) {
throw new ElasticsearchGenerationException("failed to serialize source for type [" + type + "]", e);
}
final Collection deleteTombstoneMetadataFields = Arrays.asList(VersionFieldMapper.NAME, IdFieldMapper.NAME,
TypeFieldMapper.NAME, SeqNoFieldMapper.NAME, SeqNoFieldMapper.PRIMARY_TERM_NAME, SeqNoFieldMapper.TOMBSTONE_NAME);
this.deleteTombstoneMetadataFieldMappers = Stream.of(mapping.metadataMappers)
.filter(field -> deleteTombstoneMetadataFields.contains(field.name())).toArray(MetadataFieldMapper[]::new);
final Collection noopTombstoneMetadataFields = Arrays.asList(
VersionFieldMapper.NAME, SeqNoFieldMapper.NAME, SeqNoFieldMapper.PRIMARY_TERM_NAME, SeqNoFieldMapper.TOMBSTONE_NAME);
this.noopTombstoneMetadataFieldMappers = Stream.of(mapping.metadataMappers)
.filter(field -> noopTombstoneMetadataFields.contains(field.name())).toArray(MetadataFieldMapper[]::new);
}
public Mapping mapping() {
return mapping;
}
public String type() {
return this.type;
}
public Text typeText() {
return this.typeText;
}
public Map meta() {
return mapping.meta;
}
public CompressedXContent mappingSource() {
return this.mappingSource;
}
public RootObjectMapper root() {
return mapping.root;
}
public T metadataMapper(Class type) {
return mapping.metadataMapper(type);
}
public IndexFieldMapper indexMapper() {
return metadataMapper(IndexFieldMapper.class);
}
public TypeFieldMapper typeMapper() {
return metadataMapper(TypeFieldMapper.class);
}
public SourceFieldMapper sourceMapper() {
return metadataMapper(SourceFieldMapper.class);
}
public IdFieldMapper idFieldMapper() {
return metadataMapper(IdFieldMapper.class);
}
public RoutingFieldMapper routingFieldMapper() {
return metadataMapper(RoutingFieldMapper.class);
}
public IndexFieldMapper IndexFieldMapper() {
return metadataMapper(IndexFieldMapper.class);
}
public Query typeFilter(QueryShardContext context) {
return typeMapper().fieldType().termQuery(type, context);
}
public boolean hasNestedObjects() {
return hasNestedObjects;
}
public DocumentFieldMappers mappers() {
return this.fieldMappers;
}
public Map objectMappers() {
return this.objectMappers;
}
public ParsedDocument parse(SourceToParse source) throws MapperParsingException {
return documentParser.parseDocument(source, mapping.metadataMappers);
}
public ParsedDocument createDeleteTombstoneDoc(String index, String type, String id) throws MapperParsingException {
final SourceToParse emptySource = new SourceToParse(index, type, id, new BytesArray("{}"), XContentType.JSON);
return documentParser.parseDocument(emptySource, deleteTombstoneMetadataFieldMappers).toTombstone();
}
public ParsedDocument createNoopTombstoneDoc(String index, String reason) throws MapperParsingException {
final String id = ""; // _id won't be used.
final SourceToParse sourceToParse = new SourceToParse(index, type, id, new BytesArray("{}"), XContentType.JSON);
final ParsedDocument parsedDoc = documentParser.parseDocument(sourceToParse, noopTombstoneMetadataFieldMappers).toTombstone();
// Store the reason of a noop as a raw string in the _source field
final BytesRef byteRef = new BytesRef(reason);
parsedDoc.rootDoc().add(new StoredField(SourceFieldMapper.NAME, byteRef.bytes, byteRef.offset, byteRef.length));
return parsedDoc;
}
/**
* Returns the best nested {@link ObjectMapper} instances that is in the scope of the specified nested docId.
*/
public ObjectMapper findNestedObjectMapper(int nestedDocId, SearchContext sc, LeafReaderContext context) throws IOException {
ObjectMapper nestedObjectMapper = null;
for (ObjectMapper objectMapper : objectMappers().values()) {
if (!objectMapper.nested().isNested()) {
continue;
}
Query filter = objectMapper.nestedTypeFilter();
if (filter == null) {
continue;
}
// We can pass down 'null' as acceptedDocs, because nestedDocId is a doc to be fetched and
// therefor is guaranteed to be a live doc.
final Weight nestedWeight = filter.createWeight(sc.searcher(), ScoreMode.COMPLETE_NO_SCORES, 1f);
Scorer scorer = nestedWeight.scorer(context);
if (scorer == null) {
continue;
}
if (scorer.iterator().advance(nestedDocId) == nestedDocId) {
if (nestedObjectMapper == null) {
nestedObjectMapper = objectMapper;
} else {
if (nestedObjectMapper.fullPath().length() < objectMapper.fullPath().length()) {
nestedObjectMapper = objectMapper;
}
}
}
}
return nestedObjectMapper;
}
public DocumentMapper merge(Mapping mapping) {
Mapping merged = this.mapping.merge(mapping);
return new DocumentMapper(mapperService, merged);
}
/**
* Recursively update sub field types.
*/
public DocumentMapper updateFieldType(Map fullNameToFieldType) {
Mapping updated = this.mapping.updateFieldType(fullNameToFieldType);
if (updated == this.mapping) {
// no change
return this;
}
assert updated == updated.updateFieldType(fullNameToFieldType) : "updateFieldType operation is not idempotent";
return new DocumentMapper(mapperService, updated);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
return mapping.toXContent(builder, params);
}
}