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DocumentMapper.java
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DocumentMapper.java
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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;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldType;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.search.Filter;
import org.apache.lucene.util.CloseableThreadLocal;
import org.elasticsearch.ElasticsearchGenerationException;
import org.elasticsearch.common.Booleans;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Preconditions;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.compress.CompressedString;
import org.elasticsearch.common.compress.CompressorFactory;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.text.StringAndBytesText;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.xcontent.*;
import org.elasticsearch.index.analysis.NamedAnalyzer;
import org.elasticsearch.index.mapper.internal.*;
import org.elasticsearch.index.mapper.object.ObjectMapper;
import org.elasticsearch.index.mapper.object.RootObjectMapper;
import java.io.IOException;
import java.util.*;
import java.util.concurrent.CopyOnWriteArrayList;
import static com.google.common.collect.Lists.newArrayList;
/**
*
*/
public class DocumentMapper implements ToXContent {
/**
* A result of a merge.
*/
public static class MergeResult {
private final String[] conflicts;
public MergeResult(String[] conflicts) {
this.conflicts = conflicts;
}
/**
* Does the merge have conflicts or not?
*/
public boolean hasConflicts() {
return conflicts.length > 0;
}
/**
* The merge conflicts.
*/
public String[] conflicts() {
return this.conflicts;
}
}
public static class MergeFlags {
public static MergeFlags mergeFlags() {
return new MergeFlags();
}
private boolean simulate = true;
public MergeFlags() {
}
/**
* A simulation run, don't perform actual modifications to the mapping.
*/
public boolean simulate() {
return simulate;
}
public MergeFlags simulate(boolean simulate) {
this.simulate = simulate;
return this;
}
}
/**
* A listener to be called during the parse process.
*/
public static interface ParseListener<ParseContext> {
public static final ParseListener EMPTY = new ParseListenerAdapter();
/**
* Called before a field is added to the document. Return <tt>true</tt> to include
* it in the document.
*/
boolean beforeFieldAdded(FieldMapper fieldMapper, Field fieldable, ParseContext parseContent);
}
public static class ParseListenerAdapter implements ParseListener {
@Override
public boolean beforeFieldAdded(FieldMapper fieldMapper, Field fieldable, Object parseContext) {
return true;
}
}
public static class Builder {
private Map<Class<? extends RootMapper>, RootMapper> rootMappers = new LinkedHashMap<Class<? extends RootMapper>, RootMapper>();
private NamedAnalyzer indexAnalyzer;
private NamedAnalyzer searchAnalyzer;
private NamedAnalyzer searchQuoteAnalyzer;
private final String index;
@Nullable
private final Settings indexSettings;
private final RootObjectMapper rootObjectMapper;
private ImmutableMap<String, Object> meta = ImmutableMap.of();
private final Mapper.BuilderContext builderContext;
public Builder(String index, @Nullable Settings indexSettings, RootObjectMapper.Builder builder) {
this.index = index;
this.indexSettings = indexSettings;
this.builderContext = new Mapper.BuilderContext(indexSettings, new ContentPath(1));
this.rootObjectMapper = builder.build(builderContext);
IdFieldMapper idFieldMapper = new IdFieldMapper();
if (indexSettings != null) {
String idIndexed = indexSettings.get("index.mapping._id.indexed");
if (idIndexed != null && Booleans.parseBoolean(idIndexed, false)) {
FieldType fieldType = new FieldType(IdFieldMapper.Defaults.FIELD_TYPE);
fieldType.setTokenized(false);
idFieldMapper = new IdFieldMapper(fieldType);
}
}
// UID first so it will be the first stored field to load (so will benefit from "fields: []" early termination
this.rootMappers.put(UidFieldMapper.class, new UidFieldMapper());
this.rootMappers.put(IdFieldMapper.class, idFieldMapper);
this.rootMappers.put(RoutingFieldMapper.class, new RoutingFieldMapper());
// add default mappers, order is important (for example analyzer should come before the rest to set context.analyzer)
this.rootMappers.put(SizeFieldMapper.class, new SizeFieldMapper());
this.rootMappers.put(IndexFieldMapper.class, new IndexFieldMapper());
this.rootMappers.put(SourceFieldMapper.class, new SourceFieldMapper());
this.rootMappers.put(TypeFieldMapper.class, new TypeFieldMapper());
this.rootMappers.put(AnalyzerMapper.class, new AnalyzerMapper());
this.rootMappers.put(AllFieldMapper.class, new AllFieldMapper());
this.rootMappers.put(BoostFieldMapper.class, new BoostFieldMapper());
this.rootMappers.put(TimestampFieldMapper.class, new TimestampFieldMapper());
this.rootMappers.put(TTLFieldMapper.class, new TTLFieldMapper());
this.rootMappers.put(VersionFieldMapper.class, new VersionFieldMapper());
this.rootMappers.put(ParentFieldMapper.class, new ParentFieldMapper());
}
public Builder meta(ImmutableMap<String, Object> meta) {
this.meta = meta;
return this;
}
public Builder put(RootMapper.Builder mapper) {
RootMapper rootMapper = (RootMapper) mapper.build(builderContext);
rootMappers.put(rootMapper.getClass(), rootMapper);
return this;
}
public Builder indexAnalyzer(NamedAnalyzer indexAnalyzer) {
this.indexAnalyzer = indexAnalyzer;
return this;
}
public boolean hasIndexAnalyzer() {
return indexAnalyzer != null;
}
public Builder searchAnalyzer(NamedAnalyzer searchAnalyzer) {
this.searchAnalyzer = searchAnalyzer;
if (this.searchQuoteAnalyzer == null) {
this.searchQuoteAnalyzer = searchAnalyzer;
}
return this;
}
public Builder searchQuoteAnalyzer(NamedAnalyzer searchQuoteAnalyzer) {
this.searchQuoteAnalyzer = searchQuoteAnalyzer;
return this;
}
public boolean hasSearchAnalyzer() {
return searchAnalyzer != null;
}
public boolean hasSearchQuoteAnalyzer() {
return searchQuoteAnalyzer != null;
}
public DocumentMapper build(DocumentMapperParser docMapperParser) {
Preconditions.checkNotNull(rootObjectMapper, "Mapper builder must have the root object mapper set");
return new DocumentMapper(index, indexSettings, docMapperParser, rootObjectMapper, meta,
indexAnalyzer, searchAnalyzer, searchQuoteAnalyzer,
rootMappers);
}
}
private CloseableThreadLocal<ParseContext> cache = new CloseableThreadLocal<ParseContext>() {
@Override
protected ParseContext initialValue() {
return new ParseContext(index, indexSettings, docMapperParser, DocumentMapper.this, new ContentPath(0));
}
};
public static final String ALLOW_TYPE_WRAPPER = "index.mapping.allow_type_wrapper";
private final String index;
private final Settings indexSettings;
private final String type;
private final StringAndBytesText typeText;
private final DocumentMapperParser docMapperParser;
private volatile ImmutableMap<String, Object> meta;
private volatile CompressedString mappingSource;
private final RootObjectMapper rootObjectMapper;
private final ImmutableMap<Class<? extends RootMapper>, RootMapper> rootMappers;
private final RootMapper[] rootMappersOrdered;
private final RootMapper[] rootMappersNotIncludedInObject;
private final NamedAnalyzer indexAnalyzer;
private final NamedAnalyzer searchAnalyzer;
private final NamedAnalyzer searchQuoteAnalyzer;
private final DocumentFieldMappers fieldMappers;
private volatile ImmutableMap<String, ObjectMapper> objectMappers = ImmutableMap.of();
private final List<FieldMapperListener> fieldMapperListeners = new CopyOnWriteArrayList<FieldMapperListener>();
private final List<ObjectMapperListener> objectMapperListeners = new CopyOnWriteArrayList<ObjectMapperListener>();
private boolean hasNestedObjects = false;
private final Filter typeFilter;
private final Object mappersMutex = new Object();
private boolean initMappersAdded = true;
public DocumentMapper(String index, @Nullable Settings indexSettings, DocumentMapperParser docMapperParser,
RootObjectMapper rootObjectMapper,
ImmutableMap<String, Object> meta,
NamedAnalyzer indexAnalyzer, NamedAnalyzer searchAnalyzer, NamedAnalyzer searchQuoteAnalyzer,
Map<Class<? extends RootMapper>, RootMapper> rootMappers) {
this.index = index;
this.indexSettings = indexSettings;
this.type = rootObjectMapper.name();
this.typeText = new StringAndBytesText(this.type);
this.docMapperParser = docMapperParser;
this.meta = meta;
this.rootObjectMapper = rootObjectMapper;
this.rootMappers = ImmutableMap.copyOf(rootMappers);
this.rootMappersOrdered = rootMappers.values().toArray(new RootMapper[rootMappers.values().size()]);
List<RootMapper> rootMappersNotIncludedInObjectLst = newArrayList();
for (RootMapper rootMapper : rootMappersOrdered) {
if (!rootMapper.includeInObject()) {
rootMappersNotIncludedInObjectLst.add(rootMapper);
}
}
this.rootMappersNotIncludedInObject = rootMappersNotIncludedInObjectLst.toArray(new RootMapper[rootMappersNotIncludedInObjectLst.size()]);
this.indexAnalyzer = indexAnalyzer;
this.searchAnalyzer = searchAnalyzer;
this.searchQuoteAnalyzer = searchQuoteAnalyzer != null ? searchQuoteAnalyzer : searchAnalyzer;
this.typeFilter = typeMapper().termFilter(type, null);
if (rootMapper(ParentFieldMapper.class).active()) {
// mark the routing field mapper as required
rootMapper(RoutingFieldMapper.class).markAsRequired();
}
FieldMapperListener.Aggregator fieldMappersAgg = new FieldMapperListener.Aggregator();
for (RootMapper rootMapper : rootMappersOrdered) {
if (rootMapper.includeInObject()) {
rootObjectMapper.putMapper(rootMapper);
} else {
if (rootMapper instanceof FieldMapper) {
fieldMappersAgg.mappers.add((FieldMapper) rootMapper);
}
}
}
// now traverse and get all the statically defined ones
rootObjectMapper.traverse(fieldMappersAgg);
this.fieldMappers = new DocumentFieldMappers(this);
this.fieldMappers.addNewMappers(fieldMappersAgg.mappers);
final Map<String, ObjectMapper> objectMappers = Maps.newHashMap();
rootObjectMapper.traverse(new ObjectMapperListener() {
@Override
public void objectMapper(ObjectMapper objectMapper) {
objectMappers.put(objectMapper.fullPath(), objectMapper);
}
});
this.objectMappers = ImmutableMap.copyOf(objectMappers);
for (ObjectMapper objectMapper : objectMappers.values()) {
if (objectMapper.nested().isNested()) {
hasNestedObjects = true;
}
}
refreshSource();
}
public String type() {
return this.type;
}
public Text typeText() {
return this.typeText;
}
public ImmutableMap<String, Object> meta() {
return this.meta;
}
public CompressedString mappingSource() {
return this.mappingSource;
}
public RootObjectMapper root() {
return this.rootObjectMapper;
}
public UidFieldMapper uidMapper() {
return rootMapper(UidFieldMapper.class);
}
@SuppressWarnings({"unchecked"})
public <T extends RootMapper> T rootMapper(Class<T> type) {
return (T) rootMappers.get(type);
}
public TypeFieldMapper typeMapper() {
return rootMapper(TypeFieldMapper.class);
}
public SourceFieldMapper sourceMapper() {
return rootMapper(SourceFieldMapper.class);
}
public AllFieldMapper allFieldMapper() {
return rootMapper(AllFieldMapper.class);
}
public IdFieldMapper idFieldMapper() {
return rootMapper(IdFieldMapper.class);
}
public RoutingFieldMapper routingFieldMapper() {
return rootMapper(RoutingFieldMapper.class);
}
public ParentFieldMapper parentFieldMapper() {
return rootMapper(ParentFieldMapper.class);
}
public TimestampFieldMapper timestampFieldMapper() {
return rootMapper(TimestampFieldMapper.class);
}
public TTLFieldMapper TTLFieldMapper() {
return rootMapper(TTLFieldMapper.class);
}
public IndexFieldMapper IndexFieldMapper() {
return rootMapper(IndexFieldMapper.class);
}
public SizeFieldMapper SizeFieldMapper() {
return rootMapper(SizeFieldMapper.class);
}
public BoostFieldMapper boostFieldMapper() {
return rootMapper(BoostFieldMapper.class);
}
public Analyzer indexAnalyzer() {
return this.indexAnalyzer;
}
public Analyzer searchAnalyzer() {
return this.searchAnalyzer;
}
public Analyzer searchQuotedAnalyzer() {
return this.searchQuoteAnalyzer;
}
public Filter typeFilter() {
return this.typeFilter;
}
public boolean hasNestedObjects() {
return hasNestedObjects;
}
public DocumentFieldMappers mappers() {
return this.fieldMappers;
}
public ImmutableMap<String, ObjectMapper> objectMappers() {
return this.objectMappers;
}
public ParsedDocument parse(BytesReference source) throws MapperParsingException {
return parse(SourceToParse.source(source));
}
public ParsedDocument parse(String type, String id, BytesReference source) throws MapperParsingException {
return parse(SourceToParse.source(source).type(type).id(id));
}
public ParsedDocument parse(SourceToParse source) throws MapperParsingException {
return parse(source, null);
}
public ParsedDocument parse(SourceToParse source, @Nullable ParseListener listener) throws MapperParsingException {
ParseContext context = cache.get();
if (source.type() != null && !source.type().equals(this.type)) {
throw new MapperParsingException("Type mismatch, provide type [" + source.type() + "] but mapper is of type [" + this.type + "]");
}
source.type(this.type);
XContentParser parser = source.parser();
try {
if (parser == null) {
parser = XContentHelper.createParser(source.source());
}
context.reset(parser, new ParseContext.Document(), source, listener);
// on a newly created instance of document mapper, we always consider it as new mappers that have been added
if (initMappersAdded) {
context.setMappingsModified();
initMappersAdded = false;
}
// will result in START_OBJECT
int countDownTokens = 0;
XContentParser.Token token = parser.nextToken();
if (token != XContentParser.Token.START_OBJECT) {
throw new MapperParsingException("Malformed content, must start with an object");
}
boolean emptyDoc = false;
token = parser.nextToken();
if (token == XContentParser.Token.END_OBJECT) {
// empty doc, we can handle it...
emptyDoc = true;
} else if (token != XContentParser.Token.FIELD_NAME) {
throw new MapperParsingException("Malformed content, after first object, either the type field or the actual properties should exist");
}
// first field is the same as the type, this might be because the
// type is provided, and the object exists within it or because
// there is a valid field that by chance is named as the type.
// Because of this, by default wrapping a document in a type is
// disabled, but can be enabled by setting
// index.mapping.allow_type_wrapper to true
if (type.equals(parser.currentName()) && indexSettings.getAsBoolean(ALLOW_TYPE_WRAPPER, false)) {
parser.nextToken();
countDownTokens++;
}
for (RootMapper rootMapper : rootMappersOrdered) {
rootMapper.preParse(context);
}
if (!emptyDoc) {
rootObjectMapper.parse(context);
}
for (int i = 0; i < countDownTokens; i++) {
parser.nextToken();
}
for (RootMapper rootMapper : rootMappersOrdered) {
rootMapper.postParse(context);
}
for (RootMapper rootMapper : rootMappersOrdered) {
rootMapper.validate(context);
}
} catch (Throwable e) {
// if its already a mapper parsing exception, no need to wrap it...
if (e instanceof MapperParsingException) {
throw (MapperParsingException) e;
}
// Throw a more meaningful message if the document is empty.
if (source.source() != null && source.source().length() == 0) {
throw new MapperParsingException("failed to parse, document is empty");
}
throw new MapperParsingException("failed to parse", e);
} finally {
// only close the parser when its not provided externally
if (source.parser() == null && parser != null) {
parser.close();
}
}
// reverse the order of docs for nested docs support, parent should be last
if (context.docs().size() > 1) {
Collections.reverse(context.docs());
}
// apply doc boost
if (context.docBoost() != 1.0f) {
Set<String> encounteredFields = Sets.newHashSet();
for (ParseContext.Document doc : context.docs()) {
encounteredFields.clear();
for (IndexableField field : doc) {
if (field.fieldType().indexed() && !field.fieldType().omitNorms()) {
if (!encounteredFields.contains(field.name())) {
((Field) field).setBoost(context.docBoost() * field.boost());
encounteredFields.add(field.name());
}
}
}
}
}
ParsedDocument doc = new ParsedDocument(context.uid(), context.version(), context.id(), context.type(), source.routing(), source.timestamp(), source.ttl(), context.docs(), context.analyzer(),
context.source(), context.mappingsModified()).parent(source.parent());
// reset the context to free up memory
context.reset(null, null, null, null);
return doc;
}
public void addFieldMappers(Iterable<FieldMapper> fieldMappers) {
synchronized (mappersMutex) {
this.fieldMappers.addNewMappers(fieldMappers);
}
for (FieldMapperListener listener : fieldMapperListeners) {
listener.fieldMappers(fieldMappers);
}
}
public void addFieldMapperListener(FieldMapperListener fieldMapperListener, boolean includeExisting) {
fieldMapperListeners.add(fieldMapperListener);
if (includeExisting) {
traverse(fieldMapperListener);
}
}
public void traverse(FieldMapperListener listener) {
for (RootMapper rootMapper : rootMappersOrdered) {
if (!rootMapper.includeInObject() && rootMapper instanceof FieldMapper) {
listener.fieldMapper((FieldMapper) rootMapper);
}
}
rootObjectMapper.traverse(listener);
}
public void addObjectMappers(Collection<ObjectMapper> objectMappers) {
addObjectMappers(objectMappers.toArray(new ObjectMapper[objectMappers.size()]));
}
private void addObjectMappers(ObjectMapper... objectMappers) {
synchronized (mappersMutex) {
MapBuilder<String, ObjectMapper> builder = MapBuilder.newMapBuilder(this.objectMappers);
for (ObjectMapper objectMapper : objectMappers) {
builder.put(objectMapper.fullPath(), objectMapper);
if (objectMapper.nested().isNested()) {
hasNestedObjects = true;
}
}
this.objectMappers = builder.immutableMap();
}
for (ObjectMapperListener objectMapperListener : objectMapperListeners) {
objectMapperListener.objectMappers(objectMappers);
}
}
public void addObjectMapperListener(ObjectMapperListener objectMapperListener, boolean includeExisting) {
objectMapperListeners.add(objectMapperListener);
if (includeExisting) {
traverse(objectMapperListener);
}
}
public void traverse(ObjectMapperListener listener) {
rootObjectMapper.traverse(listener);
}
public synchronized MergeResult merge(DocumentMapper mergeWith, MergeFlags mergeFlags) {
MergeContext mergeContext = new MergeContext(this, mergeFlags);
assert rootMappers.size() == mergeWith.rootMappers.size();
rootObjectMapper.merge(mergeWith.rootObjectMapper, mergeContext);
for (Map.Entry<Class<? extends RootMapper>, RootMapper> entry : rootMappers.entrySet()) {
// root mappers included in root object will get merge in the rootObjectMapper
if (entry.getValue().includeInObject()) {
continue;
}
RootMapper mergeWithRootMapper = mergeWith.rootMappers.get(entry.getKey());
if (mergeWithRootMapper != null) {
entry.getValue().merge(mergeWithRootMapper, mergeContext);
}
}
if (!mergeFlags.simulate()) {
// let the merge with attributes to override the attributes
meta = mergeWith.meta();
// update the source of the merged one
refreshSource();
}
return new MergeResult(mergeContext.buildConflicts());
}
public CompressedString refreshSource() throws ElasticsearchGenerationException {
try {
BytesStreamOutput bStream = new BytesStreamOutput();
XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON, CompressorFactory.defaultCompressor().streamOutput(bStream));
builder.startObject();
toXContent(builder, ToXContent.EMPTY_PARAMS);
builder.endObject();
builder.close();
return mappingSource = new CompressedString(bStream.bytes());
} catch (Exception e) {
throw new ElasticsearchGenerationException("failed to serialize source for type [" + type + "]", e);
}
}
public void close() {
cache.close();
rootObjectMapper.close();
for (RootMapper rootMapper : rootMappersOrdered) {
rootMapper.close();
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
rootObjectMapper.toXContent(builder, params, new ToXContent() {
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
if (indexAnalyzer != null && searchAnalyzer != null && indexAnalyzer.name().equals(searchAnalyzer.name()) && !indexAnalyzer.name().startsWith("_")) {
if (!indexAnalyzer.name().equals("default")) {
// same analyzers, output it once
builder.field("analyzer", indexAnalyzer.name());
}
} else {
if (indexAnalyzer != null && !indexAnalyzer.name().startsWith("_")) {
if (!indexAnalyzer.name().equals("default")) {
builder.field("index_analyzer", indexAnalyzer.name());
}
}
if (searchAnalyzer != null && !searchAnalyzer.name().startsWith("_")) {
if (!searchAnalyzer.name().equals("default")) {
builder.field("search_analyzer", searchAnalyzer.name());
}
}
}
if (meta != null && !meta.isEmpty()) {
builder.field("_meta", meta());
}
return builder;
}
// no need to pass here id and boost, since they are added to the root object mapper
// in the constructor
}, rootMappersNotIncludedInObject);
return builder;
}
}