This is an automated email from the ASF dual-hosted git repository. hui pushed a commit to branch lmh/LastPointFetch in repository https://gitbox.apache.org/repos/asf/iotdb.git
commit cb374a922904e96d20f67d7774060e37c48ec301 Author: Minghui Liu <[email protected]> AuthorDate: Thu May 26 17:18:26 2022 +0800 add LastPointFetchStatement --- .../db/mpp/plan/statement/StatementVisitor.java | 5 ++ .../statement/crud/LastPointFetchStatement.java | 63 ++++++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/StatementVisitor.java b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/StatementVisitor.java index 650d15d160..daf1f44b3f 100644 --- a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/StatementVisitor.java +++ b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/StatementVisitor.java @@ -25,6 +25,7 @@ import org.apache.iotdb.db.mpp.plan.statement.crud.InsertRowsOfOneDeviceStatemen import org.apache.iotdb.db.mpp.plan.statement.crud.InsertRowsStatement; import org.apache.iotdb.db.mpp.plan.statement.crud.InsertStatement; import org.apache.iotdb.db.mpp.plan.statement.crud.InsertTabletStatement; +import org.apache.iotdb.db.mpp.plan.statement.crud.LastPointFetchStatement; import org.apache.iotdb.db.mpp.plan.statement.crud.QueryStatement; import org.apache.iotdb.db.mpp.plan.statement.metadata.AlterTimeSeriesStatement; import org.apache.iotdb.db.mpp.plan.statement.metadata.CountDevicesStatement; @@ -139,6 +140,10 @@ public abstract class StatementVisitor<R, C> { return visitStatement(queryStatement, context); } + public R visitLastPointFetch(LastPointFetchStatement lastPointFetchStatement, C context) { + return visitStatement(lastPointFetchStatement, context); + } + // Insert Statement public R visitInsert(InsertStatement insertStatement, C context) { return visitStatement(insertStatement, context); diff --git a/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/LastPointFetchStatement.java b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/LastPointFetchStatement.java new file mode 100644 index 0000000000..06265e5f8e --- /dev/null +++ b/server/src/main/java/org/apache/iotdb/db/mpp/plan/statement/crud/LastPointFetchStatement.java @@ -0,0 +1,63 @@ +/* + * 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.iotdb.db.mpp.plan.statement.crud; + +import org.apache.iotdb.commons.path.PartialPath; +import org.apache.iotdb.db.metadata.path.MeasurementPath; +import org.apache.iotdb.db.mpp.plan.statement.Statement; +import org.apache.iotdb.db.mpp.plan.statement.StatementVisitor; + +import java.util.List; + +public class LastPointFetchStatement extends Statement { + + private final List<MeasurementPath> selectedPaths; + + // used for fetch data partition + private final List<String> storageGroups; + + public LastPointFetchStatement(List<MeasurementPath> selectedPaths, List<String> storageGroups) { + this.selectedPaths = selectedPaths; + this.storageGroups = storageGroups; + } + + public List<MeasurementPath> getSelectedPaths() { + return selectedPaths; + } + + public String getBelongedStorageGroup(String pathName) { + for (String storageGroup : storageGroups) { + if (pathName.startsWith(storageGroup + ".")) { + return storageGroup; + } + } + throw new RuntimeException("No matched storage group. Please check the path " + pathName); + } + + @Override + public List<? extends PartialPath> getPaths() { + return selectedPaths; + } + + @Override + public <R, C> R accept(StatementVisitor<R, C> visitor, C context) { + return visitor.visitLastPointFetch(this, context); + } +}
