Kikyou1997 commented on code in PR #11035: URL: https://github.com/apache/doris/pull/11035#discussion_r930718759
########## fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalSubQueryAlias.java: ########## @@ -0,0 +1,113 @@ +// 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.nereids.trees.plans.logical; + +import org.apache.doris.nereids.memo.GroupExpression; +import org.apache.doris.nereids.properties.LogicalProperties; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.Slot; +import org.apache.doris.nereids.trees.plans.Plan; +import org.apache.doris.nereids.trees.plans.PlanType; +import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor; + +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableList; + +import java.util.Collections; +import java.util.List; +import java.util.Objects; +import java.util.Optional; +import java.util.stream.Collectors; + +/** + * The node of logical plan for sub query and alias + * + * @param <CHILD_TYPE> param + */ +public class LogicalSubQueryAlias<CHILD_TYPE extends Plan> extends LogicalUnary<CHILD_TYPE> { + private final String alias; + + public LogicalSubQueryAlias(String tableAlias, CHILD_TYPE child) { + this(tableAlias, Optional.empty(), Optional.empty(), child); + } + + public LogicalSubQueryAlias(String tableAlias, Optional<GroupExpression> groupExpression, + Optional<LogicalProperties> logicalProperties, CHILD_TYPE child) { + super(PlanType.LOGICAL_SUBQUERY_ALIAS, groupExpression, logicalProperties, child); + this.alias = tableAlias; + + } + + public List<Slot> computeOutput(Plan input) { + return input.getOutput().stream() + .map(slot -> slot.withQualifier(ImmutableList.of(alias))) + .collect(Collectors.toList()); + } + + public String getAlias() { + return alias; + } + + @Override + public String toString() { + return "LogicalSubQueryAlias (" + alias.toString() + ")"; + } + + @Override + public boolean equals(Object o) { + if (this == o) { + return true; + } + if (o == null || getClass() != o.getClass()) { + return false; + } + LogicalSubQueryAlias that = (LogicalSubQueryAlias) o; + return alias.equals(that.alias); + } + + @Override + public int hashCode() { + return Objects.hash(alias); + } + + @Override + public Plan withChildren(List<Plan> children) { + Preconditions.checkArgument(children.size() == 1); + return new LogicalSubQueryAlias<>(alias, children.get(0)); + } + + @Override + public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { + return visitor.visitSubQueryAlias((LogicalSubQueryAlias<Plan>) this, context); + } + + @Override + public List<Expression> getExpressions() { + return Collections.emptyList(); + } + + @Override + public Plan withGroupExpression(Optional<GroupExpression> groupExpression) { + return new LogicalSubQueryAlias<>(alias, groupExpression, Optional.of(logicalProperties), child()); + } Review Comment: Will `LogicalSubQueryAlias` still exist in the Memo? If not, I think it'd be better to not overwrite this method. -- 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. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
