/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.executor.transport.task.elasticsearch.facet;
import io.crate.Constants;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Scorer;
import org.elasticsearch.action.update.TransportUpdateAction;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.mapper.Uid;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.search.facet.FacetExecutor;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.search.lookup.SearchLookup;
import java.io.IOException;
import java.util.Map;
/**
* A Collector which generates elasticsearch update requests for every document it collects
*/
public class UpdateCollector extends FacetExecutor.Collector {
private final SearchLookup lookup;
private final TransportUpdateAction updateAction;
private final Map<String, Object> updateDoc;
private final ShardId shardId;
private long rowCount;
private Long requiredVersion;
public long rowCount() {
return rowCount;
}
class CollectorUpdateRequest extends UpdateRequest {
CollectorUpdateRequest(ShardId shardId, Uid uid) {
super(shardId.getIndex(), uid.type(), uid.id());
this.shardId = shardId.id();
if (requiredVersion != null) {
version(requiredVersion);
} else {
retryOnConflict(Constants.UPDATE_RETRY_ON_CONFLICT);
}
paths(updateDoc);
}
}
public UpdateCollector(
Map<String, Object> doc,
Long requiredVersion,
TransportUpdateAction updateAction,
SearchContext context
) {
this.shardId = context.indexShard().shardId();
this.updateAction = updateAction;
this.lookup = context.lookup();
this.updateDoc = doc;
this.rowCount = 0;
this.requiredVersion = requiredVersion;
}
@Override
public void setScorer(Scorer scorer) {
lookup.setScorer(scorer);
}
@Override
public void setNextReader(AtomicReaderContext context) {
lookup.setNextReader(context);
}
@Override
public void postCollection() {
// nothing to do
}
@Override
public void collect(int doc) throws IOException {
lookup.setNextDocId(doc);
Uid uid = Uid.createUid(((ScriptDocValues.Strings) lookup.doc().get("_uid")).getValue());
collect(uid);
}
private void collect(Uid uid) {
UpdateRequest request = new CollectorUpdateRequest(shardId, uid);
updateAction.execute(request).actionGet();
rowCount++;
}
}