org.elasticsearch.index.mapper.internal.AnalyzerMapper Maven / Gradle / Ivy
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* 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.analysis.Analyzer;
import org.apache.lucene.index.IndexableField;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.mapper.*;
import org.elasticsearch.search.highlight.HighlighterContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.index.mapper.MapperBuilders.analyzer;
/**
*
*/
public class AnalyzerMapper implements Mapper, InternalMapper, RootMapper {
public static final String NAME = "_analyzer";
public static final String CONTENT_TYPE = "_analyzer";
public static class Defaults {
public static final String PATH = "_analyzer";
}
public static class Builder extends Mapper.Builder {
private String field = Defaults.PATH;
public Builder() {
super(CONTENT_TYPE);
this.builder = this;
}
public Builder field(String field) {
this.field = field;
return this;
}
@Override
public AnalyzerMapper build(BuilderContext context) {
return new AnalyzerMapper(field);
}
}
public static class TypeParser implements Mapper.TypeParser {
@Override
public Mapper.Builder parse(String name, Map node, ParserContext parserContext) throws MapperParsingException {
AnalyzerMapper.Builder builder = analyzer();
for (Map.Entry entry : node.entrySet()) {
String fieldName = Strings.toUnderscoreCase(entry.getKey());
Object fieldNode = entry.getValue();
if (fieldName.equals("path")) {
builder.field(fieldNode.toString());
}
}
return builder;
}
}
private final String path;
public AnalyzerMapper() {
this(Defaults.PATH);
}
public AnalyzerMapper(String path) {
this.path = path.intern();
}
@Override
public String name() {
return CONTENT_TYPE;
}
@Override
public void preParse(ParseContext context) throws IOException {
}
@Override
public void postParse(ParseContext context) throws IOException {
Analyzer analyzer = context.docMapper().mappers().indexAnalyzer();
if (path != null) {
String value = null;
List fields = context.doc().getFields();
for (int i = 0, fieldsSize = fields.size(); i < fieldsSize; i++) {
IndexableField field = fields.get(i);
if (field.name().equals(path)) {
value = field.stringValue();
break;
}
}
if (value == null) {
value = context.ignoredValue(path);
}
if (value != null) {
analyzer = context.analysisService().analyzer(value);
if (analyzer == null) {
throw new MapperParsingException("No analyzer found for [" + value + "] from path [" + path + "]");
}
analyzer = context.docMapper().mappers().indexAnalyzer(analyzer);
}
}
context.analyzer(analyzer);
}
@Override
public boolean includeInObject() {
return false;
}
public Analyzer setAnalyzer(HighlighterContext context){
if (context.analyzer() != null){
return context.analyzer();
}
Analyzer analyzer = context.mapper.indexAnalyzer();
if (analyzer == null) {
if (path != null) {
String analyzerName = (String) context.context.lookup().source().extractValue(path);
analyzer = context.context.mapperService().analysisService().analyzer(analyzerName);
}
if (analyzer == null) {
analyzer = context.context.mapperService().documentMapper(context.hitContext.hit().type()).mappers().indexAnalyzer();
}
}
context.analyzer(analyzer);
return analyzer;
}
@Override
public void parse(ParseContext context) throws IOException {
}
@Override
public void merge(Mapper mergeWith, MergeContext mergeContext) throws MergeMappingException {
}
@Override
public void traverse(FieldMapperListener fieldMapperListener) {
}
@Override
public void traverse(ObjectMapperListener objectMapperListener) {
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
if (path.equals(Defaults.PATH)) {
return builder;
}
builder.startObject(CONTENT_TYPE);
if (!path.equals(Defaults.PATH)) {
builder.field("path", path);
}
builder.endObject();
return builder;
}
@Override
public void close() {
}
}