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Split internal fetch request used within scroll and search #7870
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javanna
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124 changes: 124 additions & 0 deletions
124
src/main/java/org/elasticsearch/search/fetch/FetchRequest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.elasticsearch.search.fetch; | ||
|
|
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| import com.carrotsearch.hppc.IntArrayList; | ||
| import org.apache.lucene.search.FieldDoc; | ||
| import org.apache.lucene.search.ScoreDoc; | ||
| import org.elasticsearch.Version; | ||
| import org.elasticsearch.action.search.SearchScrollRequest; | ||
| import org.elasticsearch.action.search.type.ParsedScrollId; | ||
| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
| import org.elasticsearch.common.lucene.Lucene; | ||
| import org.elasticsearch.transport.TransportRequest; | ||
|
|
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| import java.io.IOException; | ||
|
|
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| /** | ||
| * | ||
| */ | ||
| public class FetchRequest extends TransportRequest { | ||
|
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| private long id; | ||
|
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| private int[] docIds; | ||
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| private int size; | ||
|
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| private ScoreDoc lastEmittedDoc; | ||
|
|
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| public FetchRequest() { | ||
| } | ||
|
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| public FetchRequest(SearchScrollRequest request, long id, IntArrayList list, ScoreDoc lastEmittedDoc) { | ||
| super(request); | ||
| this.id = id; | ||
| this.docIds = list.buffer; | ||
| this.size = list.size(); | ||
| this.lastEmittedDoc = lastEmittedDoc; | ||
| } | ||
|
|
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| protected FetchRequest(TransportRequest originalRequest, long id, IntArrayList list, ScoreDoc lastEmittedDoc) { | ||
| super(originalRequest); | ||
| this.id = id; | ||
| this.docIds = list.buffer; | ||
| this.size = list.size(); | ||
| this.lastEmittedDoc = lastEmittedDoc; | ||
| } | ||
|
|
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| public long id() { | ||
| return id; | ||
| } | ||
|
|
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| public int[] docIds() { | ||
| return docIds; | ||
| } | ||
|
|
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| public int docIdsSize() { | ||
| return size; | ||
| } | ||
|
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| public ScoreDoc lastEmittedDoc() { | ||
| return lastEmittedDoc; | ||
| } | ||
|
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| @Override | ||
| public void readFrom(StreamInput in) throws IOException { | ||
| super.readFrom(in); | ||
| id = in.readLong(); | ||
| size = in.readVInt(); | ||
| docIds = new int[size]; | ||
| for (int i = 0; i < size; i++) { | ||
| docIds[i] = in.readVInt(); | ||
| } | ||
| if (in.getVersion().onOrAfter(ParsedScrollId.SCROLL_SEARCH_AFTER_MINIMUM_VERSION)) { | ||
| byte flag = in.readByte(); | ||
| if (flag == 1) { | ||
| lastEmittedDoc = Lucene.readFieldDoc(in); | ||
| } else if (flag == 2) { | ||
| lastEmittedDoc = Lucene.readScoreDoc(in); | ||
| } else if (flag != 0) { | ||
| throw new IOException("Unknown flag: " + flag); | ||
| } | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| super.writeTo(out); | ||
| out.writeLong(id); | ||
| out.writeVInt(size); | ||
| for (int i = 0; i < size; i++) { | ||
| out.writeVInt(docIds[i]); | ||
| } | ||
| if (out.getVersion().onOrAfter(Version.V_1_2_0)) { | ||
| if (lastEmittedDoc == null) { | ||
| out.writeByte((byte) 0); | ||
| } else if (lastEmittedDoc instanceof FieldDoc) { | ||
| out.writeByte((byte) 1); | ||
| Lucene.writeFieldDoc(out, (FieldDoc) lastEmittedDoc); | ||
| } else { | ||
| out.writeByte((byte) 2); | ||
| Lucene.writeScoreDoc(out, lastEmittedDoc); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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can we rename it to
ShardFetchRequest?