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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 org.elasticsearch.Version;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.index.analysis.AnalysisService;
import org.elasticsearch.index.query.QueryParseContext;
import org.elasticsearch.index.query.QueryShardContext;
import org.elasticsearch.index.similarity.SimilarityProvider;
import java.util.Map;
import java.util.function.Function;
public abstract class Mapper implements ToXContent, Iterable<Mapper> {
public static class BuilderContext {
private final Settings indexSettings;
private final ContentPath contentPath;
public BuilderContext(Settings indexSettings, ContentPath contentPath) {
this.contentPath = contentPath;
this.indexSettings = indexSettings;
}
public ContentPath path() {
return this.contentPath;
}
@Nullable
public Settings indexSettings() {
return this.indexSettings;
}
@Nullable
public Version indexCreatedVersion() {
if (indexSettings == null) {
return null;
}
return Version.indexCreated(indexSettings);
}
}
public abstract static class Builder<T extends Builder, Y extends Mapper> {
public String name;
protected T builder;
protected Builder(String name) {
this.name = name;
}
public String name() {
return this.name;
}
/** Returns a newly built mapper. */
public abstract Y build(BuilderContext context);
}
public interface TypeParser {
class ParserContext {
private final String type;
private final AnalysisService analysisService;
private final Function<String, SimilarityProvider> similarityLookupService;
private final MapperService mapperService;
private final Function<String, TypeParser> typeParsers;
private final Version indexVersionCreated;
private final ParseFieldMatcher parseFieldMatcher;
private final QueryShardContext queryShardContext;
public ParserContext(String type, AnalysisService analysisService, Function<String, SimilarityProvider> similarityLookupService,
MapperService mapperService, Function<String, TypeParser> typeParsers,
Version indexVersionCreated, ParseFieldMatcher parseFieldMatcher, QueryShardContext queryShardContext) {
this.type = type;
this.analysisService = analysisService;
this.similarityLookupService = similarityLookupService;
this.mapperService = mapperService;
this.typeParsers = typeParsers;
this.indexVersionCreated = indexVersionCreated;
this.parseFieldMatcher = parseFieldMatcher;
this.queryShardContext = queryShardContext;
}
public String type() {
return type;
}
public AnalysisService analysisService() {
return analysisService;
}
public SimilarityProvider getSimilarity(String name) {
return similarityLookupService.apply(name);
}
public MapperService mapperService() {
return mapperService;
}
public TypeParser typeParser(String type) {
return typeParsers.apply(type);
}
public Version indexVersionCreated() {
return indexVersionCreated;
}
public ParseFieldMatcher parseFieldMatcher() {
return parseFieldMatcher;
}
public QueryShardContext queryShardContext() {
return queryShardContext;
}
public boolean isWithinMultiField() { return false; }
protected Function<String, TypeParser> typeParsers() { return typeParsers; }
protected Function<String, SimilarityProvider> similarityLookupService() { return similarityLookupService; }
public ParserContext createMultiFieldContext(ParserContext in) {
return new MultiFieldParserContext(in) {
@Override
public boolean isWithinMultiField() { return true; }
};
}
static class MultiFieldParserContext extends ParserContext {
MultiFieldParserContext(ParserContext in) {
super(in.type(), in.analysisService, in.similarityLookupService(), in.mapperService(), in.typeParsers(), in.indexVersionCreated(), in.parseFieldMatcher(), in.queryShardContext());
}
}
}
Mapper.Builder<?,?> parse(String name, Map<String, Object> node, ParserContext parserContext) throws MapperParsingException;
}
private final String simpleName;
public Mapper(String simpleName) {
this.simpleName = simpleName;
}
/** Returns the simple name, which identifies this mapper against other mappers at the same level in the mappers hierarchy
* TODO: make this protected once Mapper and FieldMapper are merged together */
public final String simpleName() {
return simpleName;
}
/** Returns the canonical name which uniquely identifies the mapper against other mappers in a type. */
public abstract String name();
/** Return the merge of {@code mergeWith} into this.
* Both {@code this} and {@code mergeWith} will be left unmodified. */
public abstract Mapper merge(Mapper mergeWith, boolean updateAllTypes);
/**
* Update the field type of this mapper. This is necessary because some mapping updates
* can modify mappings across several types. This method must return a copy of the mapper
* so that the current mapper is not modified.
*/
public abstract Mapper updateFieldType(Map<String, MappedFieldType> fullNameToFieldType);
}
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