| // 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.analysis; |
| |
| import org.apache.doris.common.AnalysisException; |
| import org.apache.doris.rewrite.ExprRewriter; |
| |
| import com.google.common.base.Predicates; |
| import com.google.common.collect.Lists; |
| |
| import java.util.List; |
| |
| /** |
| * Select list items plus distinct clause. |
| */ |
| class SelectList { |
| private boolean isDistinct; |
| |
| // /////////////////////////////////////// |
| // BEGIN: Members that need to be reset() |
| |
| private final List<SelectListItem> items; |
| |
| // END: Members that need to be reset() |
| // /////////////////////////////////////// |
| |
| public SelectList(SelectList other) { |
| items = Lists.newArrayList(); |
| for (SelectListItem item : other.items) { |
| items.add(item.clone()); |
| } |
| isDistinct = other.isDistinct; |
| } |
| |
| public SelectList() { |
| items = Lists.newArrayList(); |
| this.isDistinct = false; |
| } |
| |
| public SelectList(List<SelectListItem> items, boolean isDistinct) { |
| this.isDistinct = isDistinct; |
| this.items = items; |
| } |
| |
| public List<SelectListItem> getItems() { |
| return items; |
| } |
| |
| public void addItem(SelectListItem item) { |
| items.add(item); |
| } |
| |
| public boolean isDistinct() { |
| return isDistinct; |
| } |
| |
| public void setIsDistinct(boolean value) { |
| isDistinct = value; |
| } |
| |
| public void reset() { |
| for (SelectListItem item : items) { |
| if (!item.isStar()) { |
| item.getExpr().reset(); |
| } |
| } |
| } |
| |
| public void rewriteExprs(ExprRewriter rewriter, Analyzer analyzer) |
| throws AnalysisException { |
| for (SelectListItem item : items) { |
| if (item.isStar()) { |
| continue; |
| } |
| // rewrite subquery in select list |
| if (item.getExpr().contains(Predicates.instanceOf(Subquery.class))) { |
| List<Subquery> subqueryExprs = Lists.newArrayList(); |
| item.getExpr().collect(Subquery.class, subqueryExprs); |
| for (Subquery s : subqueryExprs) { |
| s.getStatement().rewriteExprs(rewriter); |
| } |
| } |
| item.setExpr(rewriter.rewrite(item.getExpr(), analyzer)); |
| } |
| } |
| |
| @Override |
| public SelectList clone() { |
| return new SelectList(this); |
| } |
| } |