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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.query.support;
import org.elasticsearch.action.support.ToXContentToBytes;
import org.elasticsearch.common.ParsingException;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParser.Token;
import org.elasticsearch.index.query.QueryParseContext;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
public final class InnerHitsBuilder extends ToXContentToBytes implements Writeable<InnerHitsBuilder> {
private final Map<String, InnerHitBuilder> innerHitsBuilders;
public InnerHitsBuilder() {
this.innerHitsBuilders = new HashMap<>();
}
public InnerHitsBuilder(Map<String, InnerHitBuilder> innerHitsBuilders) {
this.innerHitsBuilders = Objects.requireNonNull(innerHitsBuilders);
}
/**
* Read from a stream.
*/
public InnerHitsBuilder(StreamInput in) throws IOException {
int size = in.readVInt();
innerHitsBuilders = new HashMap<>(size);
for (int i = 0; i < size; i++) {
innerHitsBuilders.put(in.readString(), new InnerHitBuilder(in));
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(innerHitsBuilders.size());
for (Map.Entry<String, InnerHitBuilder> entry : innerHitsBuilders.entrySet()) {
out.writeString(entry.getKey());
entry.getValue().writeTo(out);
}
}
public InnerHitsBuilder addInnerHit(String name, InnerHitBuilder builder) {
Objects.requireNonNull(name);
Objects.requireNonNull(builder);
this.innerHitsBuilders.put(name, builder.setName(name));
return this;
}
public Map<String, InnerHitBuilder> getInnerHitsBuilders() {
return innerHitsBuilders;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
for (Map.Entry<String, InnerHitBuilder> entry : innerHitsBuilders.entrySet()) {
builder.field(entry.getKey(), entry.getValue(), params);
}
builder.endObject();
return builder;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
InnerHitsBuilder that = (InnerHitsBuilder) o;
return innerHitsBuilders.equals(that.innerHitsBuilders);
}
@Override
public int hashCode() {
return innerHitsBuilders.hashCode();
}
public static InnerHitsBuilder fromXContent(QueryParseContext context) throws IOException {
Map<String, InnerHitBuilder> innerHitBuilders = new HashMap<>();
String innerHitName = null;
XContentParser parser = context.parser();
for (Token token = parser.nextToken(); token != Token.END_OBJECT; token = parser.nextToken()) {
switch (token) {
case START_OBJECT:
InnerHitBuilder innerHitBuilder = InnerHitBuilder.fromXContent(context);
innerHitBuilder.setName(innerHitName);
innerHitBuilders.put(innerHitName, innerHitBuilder);
break;
case FIELD_NAME:
innerHitName = parser.currentName();
break;
default:
throw new ParsingException(parser.getTokenLocation(), "Expected [" + XContentParser.Token.START_OBJECT + "] in ["
+ parser.currentName() + "] but found [" + token + "]", parser.getTokenLocation());
}
}
return new InnerHitsBuilder(innerHitBuilders);
}
}
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