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[Enhancement] (nereids)implement showDeleteCommand in nereids (#44296)
Issue Number: close #42754
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98 changes: 98 additions & 0 deletions
98
...e-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/ShowDeleteCommand.java
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| // 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. | ||
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| package org.apache.doris.nereids.trees.plans.commands; | ||
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| import org.apache.doris.analysis.RedirectStatus; | ||
| import org.apache.doris.catalog.Column; | ||
| import org.apache.doris.catalog.Database; | ||
| import org.apache.doris.catalog.Env; | ||
| import org.apache.doris.catalog.ScalarType; | ||
| import org.apache.doris.common.ErrorCode; | ||
| import org.apache.doris.common.ErrorReport; | ||
| import org.apache.doris.common.proc.DeleteInfoProcDir; | ||
| import org.apache.doris.load.DeleteHandler; | ||
| import org.apache.doris.nereids.trees.plans.PlanType; | ||
| import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor; | ||
| import org.apache.doris.qe.ConnectContext; | ||
| import org.apache.doris.qe.ShowResultSet; | ||
| import org.apache.doris.qe.ShowResultSetMetaData; | ||
| import org.apache.doris.qe.StmtExecutor; | ||
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| import com.google.common.base.Strings; | ||
| import com.google.common.collect.Lists; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| /** | ||
| * show delete command | ||
| */ | ||
| public class ShowDeleteCommand extends ShowCommand { | ||
| private String dbName; // if not given use current. | ||
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| /** | ||
| * constructor | ||
| */ | ||
| public ShowDeleteCommand(String dbName) { | ||
| super(PlanType.SHOW_DELETE_COMMAND); | ||
| this.dbName = dbName; | ||
| } | ||
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| @Override | ||
| public ShowResultSet doRun(ConnectContext ctx, StmtExecutor executor) throws Exception { | ||
| if (Strings.isNullOrEmpty(dbName)) { | ||
| dbName = ctx.getDatabase(); | ||
| if (Strings.isNullOrEmpty(dbName)) { | ||
| ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR); | ||
| } | ||
| } | ||
| Env env = Env.getCurrentEnv(); | ||
| Database db = env.getInternalCatalog().getDbOrAnalysisException(dbName); | ||
| long dbId = db.getId(); | ||
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| DeleteHandler deleteHandler = env.getDeleteHandler(); | ||
| List<List<Comparable>> deleteInfos = deleteHandler.getDeleteInfosByDb(dbId); | ||
| List<List<String>> rows = Lists.newArrayList(); | ||
| for (List<Comparable> deleteInfo : deleteInfos) { | ||
| List<String> oneInfo = new ArrayList<String>(deleteInfo.size()); | ||
| for (Comparable element : deleteInfo) { | ||
| oneInfo.add(element.toString()); | ||
| } | ||
| rows.add(oneInfo); | ||
| } | ||
| return new ShowResultSet(getMetaData(), rows); | ||
| } | ||
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| @Override | ||
| public <R, C> R accept(PlanVisitor<R, C> visitor, C context) { | ||
| return visitor.visitShowDeleteCommand(this, context); | ||
| } | ||
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| public ShowResultSetMetaData getMetaData() { | ||
| ShowResultSetMetaData.Builder builder = ShowResultSetMetaData.builder(); | ||
| for (String title : DeleteInfoProcDir.TITLE_NAMES) { | ||
| builder.addColumn(new Column(title, ScalarType.createVarchar(30))); | ||
| } | ||
| return builder.build(); | ||
| } | ||
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| @Override | ||
| public RedirectStatus toRedirectStatus() { | ||
| return RedirectStatus.FORWARD_NO_SYNC; | ||
| } | ||
| } |
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