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/*
* Licensed to ElasticSearch and Shay Banon 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.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldType;
import org.apache.lucene.index.FieldInfo.IndexOptions;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.codec.postingsformat.PostingsFormatProvider;
import org.elasticsearch.index.fielddata.FieldDataType;
import org.elasticsearch.index.mapper.*;
import org.elasticsearch.index.mapper.core.AbstractFieldMapper;
import org.elasticsearch.index.mapper.core.NumberFieldMapper;
import java.io.IOException;
import java.util.Map;
import static org.elasticsearch.common.xcontent.support.XContentMapValues.nodeBooleanValue;
import static org.elasticsearch.index.mapper.MapperBuilders.routing;
import static org.elasticsearch.index.mapper.core.TypeParsers.parseField;
/**
*
*/
public class RoutingFieldMapper extends AbstractFieldMapper implements InternalMapper, RootMapper {
public static final String NAME = "_routing";
public static final String CONTENT_TYPE = "_routing";
public static class Defaults extends AbstractFieldMapper.Defaults {
public static final String NAME = "_routing";
public static final FieldType FIELD_TYPE = new FieldType(AbstractFieldMapper.Defaults.FIELD_TYPE);
static {
FIELD_TYPE.setIndexed(true);
FIELD_TYPE.setTokenized(false);
FIELD_TYPE.setStored(true);
FIELD_TYPE.setOmitNorms(true);
FIELD_TYPE.setIndexOptions(IndexOptions.DOCS_ONLY);
FIELD_TYPE.freeze();
}
public static final boolean REQUIRED = false;
public static final String PATH = null;
}
public static class Builder extends AbstractFieldMapper.Builder {
private boolean required = Defaults.REQUIRED;
private String path = Defaults.PATH;
public Builder() {
super(Defaults.NAME, new FieldType(Defaults.FIELD_TYPE));
}
public Builder required(boolean required) {
this.required = required;
return builder;
}
public Builder path(String path) {
this.path = path;
return builder;
}
@Override
public RoutingFieldMapper build(BuilderContext context) {
return new RoutingFieldMapper(fieldType, required, path, provider, fieldDataSettings);
}
}
public static class TypeParser implements Mapper.TypeParser {
@Override
public Mapper.Builder parse(String name, Map node, ParserContext parserContext) throws MapperParsingException {
RoutingFieldMapper.Builder builder = routing();
parseField(builder, builder.name, node, parserContext);
for (Map.Entry entry : node.entrySet()) {
String fieldName = Strings.toUnderscoreCase(entry.getKey());
Object fieldNode = entry.getValue();
if (fieldName.equals("required")) {
builder.required(nodeBooleanValue(fieldNode));
} else if (fieldName.equals("path")) {
builder.path(fieldNode.toString());
}
}
return builder;
}
}
private boolean required;
private final String path;
public RoutingFieldMapper() {
this(new FieldType(Defaults.FIELD_TYPE), Defaults.REQUIRED, Defaults.PATH, null, null);
}
protected RoutingFieldMapper(FieldType fieldType, boolean required, String path, PostingsFormatProvider provider, @Nullable Settings fieldDataSettings) {
super(new Names(Defaults.NAME, Defaults.NAME, Defaults.NAME, Defaults.NAME), 1.0f, fieldType, Lucene.KEYWORD_ANALYZER,
Lucene.KEYWORD_ANALYZER, provider, null, fieldDataSettings);
this.required = required;
this.path = path;
}
@Override
public FieldType defaultFieldType() {
return Defaults.FIELD_TYPE;
}
@Override
public FieldDataType defaultFieldDataType() {
return new FieldDataType("string");
}
public void markAsRequired() {
this.required = true;
}
public boolean required() {
return this.required;
}
public String path() {
return this.path;
}
public String value(Document document) {
Field field = (Field) document.getField(names.indexName());
return field == null ? null : value(field);
}
@Override
public String value(Object value) {
if (value == null) {
return null;
}
return value.toString();
}
@Override
public void validate(ParseContext context) throws MapperParsingException {
String routing = context.sourceToParse().routing();
if (path != null && routing != null) {
// we have a path, check if we can validate we have the same routing value as the one in the doc...
String value = null;
Field field = (Field) context.doc().getField(path);
if (field != null) {
value = field.stringValue();
if (value == null) {
// maybe its a numeric field...
if (field instanceof NumberFieldMapper.CustomNumericField) {
value = ((NumberFieldMapper.CustomNumericField) field).numericAsString();
}
}
}
if (value == null) {
value = context.ignoredValue(path);
}
if (!routing.equals(value)) {
throw new MapperParsingException("External routing [" + routing + "] and document path routing [" + value + "] mismatch");
}
}
}
@Override
public void preParse(ParseContext context) throws IOException {
super.parse(context);
}
@Override
public void postParse(ParseContext context) throws IOException {
}
@Override
public void parse(ParseContext context) throws IOException {
// no need ot parse here, we either get the routing in the sourceToParse
// or we don't have routing, if we get it in sourceToParse, we process it in preParse
// which will always be called
}
@Override
public boolean includeInObject() {
return true;
}
@Override
protected Field parseCreateField(ParseContext context) throws IOException {
if (context.sourceToParse().routing() != null) {
String routing = context.sourceToParse().routing();
if (routing != null) {
if (!fieldType.indexed() && !fieldType.stored()) {
context.ignoredValue(names.indexName(), routing);
return null;
}
return new Field(names.indexName(), routing, fieldType);
}
}
return null;
}
@Override
protected String contentType() {
return CONTENT_TYPE;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
// if all are defaults, no sense to write it at all
if (fieldType.indexed() == Defaults.FIELD_TYPE.indexed() &&
fieldType.stored() == Defaults.FIELD_TYPE.stored() && required == Defaults.REQUIRED && path == Defaults.PATH) {
return builder;
}
builder.startObject(CONTENT_TYPE);
if (fieldType.indexed() != Defaults.FIELD_TYPE.indexed()) {
builder.field("index", fieldType.indexed());
}
if (fieldType.stored() != Defaults.FIELD_TYPE.stored()) {
builder.field("store", fieldType.stored());
}
if (required != Defaults.REQUIRED) {
builder.field("required", required);
}
if (path != Defaults.PATH) {
builder.field("path", path);
}
builder.endObject();
return builder;
}
@Override
public void merge(Mapper mergeWith, MergeContext mergeContext) throws MergeMappingException {
// do nothing here, no merging, but also no exception
}
}
