chenhao7253886 commented on a change in pull request #758: Add item operator URL: https://github.com/apache/incubator-doris/pull/758#discussion_r265884659
########## File path: fe/src/main/java/org/apache/doris/optimizer/StmtToExpressionConvertor.java ########## @@ -0,0 +1,244 @@ +// 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.optimizer; + +import com.google.common.base.Preconditions; +import com.google.common.collect.Lists; +import com.google.common.collect.Maps; +import org.apache.doris.analysis.AggregateInfo; +import org.apache.doris.analysis.ArithmeticExpr; +import org.apache.doris.analysis.BaseTableRef; +import org.apache.doris.analysis.BinaryPredicate; +import org.apache.doris.analysis.CaseExpr; +import org.apache.doris.analysis.CastExpr; +import org.apache.doris.analysis.CompoundPredicate; +import org.apache.doris.analysis.Expr; +import org.apache.doris.analysis.FunctionCallExpr; +import org.apache.doris.analysis.InPredicate; +import org.apache.doris.analysis.IsNullPredicate; +import org.apache.doris.analysis.LikePredicate; +import org.apache.doris.analysis.LiteralExpr; +import org.apache.doris.analysis.QueryStmt; +import org.apache.doris.analysis.SelectStmt; +import org.apache.doris.analysis.SlotRef; +import org.apache.doris.analysis.TableRef; +import org.apache.doris.analysis.UnionStmt; +import org.apache.doris.optimizer.base.OptColumnRef; +import org.apache.doris.optimizer.base.OptColumnRefFactory; +import org.apache.doris.optimizer.operator.OptItemArithmetic; +import org.apache.doris.optimizer.operator.OptItemCase; +import org.apache.doris.optimizer.operator.OptItemCast; +import org.apache.doris.optimizer.operator.OptItemColumnRef; +import org.apache.doris.optimizer.operator.OptItemCompoundPredicate; +import org.apache.doris.optimizer.operator.OptItemConst; +import org.apache.doris.optimizer.operator.OptItemFunctionCall; +import org.apache.doris.optimizer.operator.OptItemInPredicate; +import org.apache.doris.optimizer.operator.OptItemIsNullPredicate; +import org.apache.doris.optimizer.operator.OptItemLikePredicate; +import org.apache.doris.optimizer.operator.OptLogicalAggregate; +import org.apache.doris.optimizer.operator.OptLogicalScan; +import org.apache.doris.optimizer.operator.OptLogicalUnion; +import org.apache.doris.optimizer.operator.OptLogicallJoin; +import org.apache.doris.optimizer.operator.OptItemBinaryPredicate; + +import java.util.List; +import java.util.Map; + +// Used to convert QueryStmt to an OptExpression +public class StmtToExpressionConvertor { + private OptColumnRefFactory columnRefFactory = new OptColumnRefFactory(); + private Map<Integer, OptColumnRef> slotIdToColumnRef = Maps.newHashMap(); + + public OptExpression convertQuery(QueryStmt stmt) { + OptExpression root; + if (stmt instanceof SelectStmt) { + root = convertSelect((SelectStmt) stmt); + } else { + Preconditions.checkArgument(stmt instanceof UnionStmt); + root = convertUnion((UnionStmt) stmt); + } + return root; + } + + public OptExpression convertUnion(UnionStmt stmt) { + OptLogicalUnion unionOp = new OptLogicalUnion(); + List<OptExpression> inputs = Lists.newArrayList(); + for (UnionStmt.UnionOperand operand : stmt.getOperands()) { + OptExpression input = convertQuery(operand.getQueryStmt()); + inputs.add(input); + } + return new OptExpression(unionOp, inputs); + } + + public OptExpression convertSelect(SelectStmt stmt) { Review comment: 同上private， 以下几个方法都是。 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
