eldenmoon commented on code in PR #15491: URL: https://github.com/apache/doris/pull/15491#discussion_r1071705397
########## fe/fe-core/src/main/java/org/apache/doris/qe/PointQueryExec.java: ########## @@ -0,0 +1,221 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF 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.apache.doris.qe; + +import org.apache.doris.analysis.DescriptorTable; +import org.apache.doris.analysis.Expr; +import org.apache.doris.analysis.LiteralExpr; +import org.apache.doris.analysis.SlotRef; +import org.apache.doris.common.Status; +import org.apache.doris.proto.InternalService; +import org.apache.doris.proto.InternalService.KeyTuple; +import org.apache.doris.rpc.BackendServiceProxy; +import org.apache.doris.rpc.RpcException; +import org.apache.doris.thrift.TExpr; +import org.apache.doris.thrift.TExprList; +import org.apache.doris.thrift.TNetworkAddress; +import org.apache.doris.thrift.TResultBatch; +import org.apache.doris.thrift.TStatusCode; + +import com.google.protobuf.ByteString; +import org.apache.logging.log4j.LogManager; +import org.apache.logging.log4j.Logger; +import org.apache.thrift.TDeserializer; +import org.apache.thrift.TException; +import org.apache.thrift.TSerializer; + +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.UUID; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.Future; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.TimeoutException; + +public class PointQueryExec { + private static final Logger LOG = LogManager.getLogger(PointQueryExec.class); + private TNetworkAddress address; + // SlotRef sorted by column id + private Map<SlotRef, Expr> equalPredicats; + // ByteString serialized for prepared statement + private ByteString serializedDescTable; + private ByteString serializedOutputExpr; + private ArrayList<Expr> outputExprs; + private DescriptorTable descriptorTable; + private long tabletID = 0; + private long timeoutMs = 1000; // default 1s + + private boolean isCancel = false; + private boolean isBinaryProtocol = false; + private long backendID; + // For parepared statement cached structure, + // there are some pre caculated structure in Backend TabletFetch service + // using this ID to find for this prepared statement + private UUID cacheID; + + public PointQueryExec(Map<SlotRef, Expr> equalPredicats, DescriptorTable descTable, + ArrayList<Expr> outputExprs) { + this.equalPredicats = equalPredicats; + this.descriptorTable = descTable; + this.outputExprs = outputExprs; + } + + void setAddressAndBackendID(TNetworkAddress addr, long backendID) { + this.address = addr; + this.backendID = backendID; + } + + public void setSerializedDescTable(ByteString serializedDescTable) { + this.serializedDescTable = serializedDescTable; + } + + public void setSerializedOutputExpr(ByteString serializedOutputExpr) { + this.serializedOutputExpr = serializedOutputExpr; + } + + public void setCacheID(UUID cacheID) { + this.cacheID = cacheID; + } + + public void setTabletId(long tabletID) { + this.tabletID = tabletID; + } + + public void setTimeout(long timeoutMs) { + this.timeoutMs = timeoutMs; + } + + public void setBinaryProtocol(boolean isBinaryProtocol) { + this.isBinaryProtocol = isBinaryProtocol; + } + + void addKeyTuples( + InternalService.PTabletKeyLookupRequest.Builder requestBuilder) { + // TODO handle IN predicates + KeyTuple.Builder kBuilder = KeyTuple.newBuilder(); + for (Expr expr : equalPredicats.values()) { + LiteralExpr lexpr = (LiteralExpr) expr; + kBuilder.addKeyColumnRep(lexpr.getStringValue()); + } + requestBuilder.addKeyTuples(kBuilder); + } + + public RowBatch getNext(Status status) throws TException { + long timeoutTs = System.currentTimeMillis() + timeoutMs; + RowBatch rowBatch = new RowBatch(); + InternalService.PTabletKeyLookupResponse pResult = null; + try { + if (serializedDescTable == null) { Review Comment: No,for prepared statement it's only serialized once and will be reused later on -- This is an automated message from the Apache Git Service. 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