| /* |
| * 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.drill.exec.store.mapr.db; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import com.fasterxml.jackson.annotation.JacksonInject; |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.annotation.JsonTypeName; |
| |
| import org.apache.drill.common.exceptions.ExecutionSetupException; |
| import org.apache.drill.common.expression.SchemaPath; |
| import org.apache.drill.common.logical.StoragePluginConfig; |
| import org.apache.drill.exec.physical.impl.join.RowKeyJoin; |
| import org.apache.drill.exec.record.metadata.TupleMetadata; |
| import org.apache.drill.exec.store.StoragePluginRegistry; |
| |
| /** |
| * A RestrictedMapRDBSubScan is intended for skip-scan (as opposed to sequential scan) operations |
| * where the set of rowkeys is obtained from a corresponding RowKeyJoin instance |
| */ |
| @JsonTypeName("maprdb-restricted-subscan") |
| public class RestrictedMapRDBSubScan extends MapRDBSubScan { |
| |
| @JsonCreator |
| public RestrictedMapRDBSubScan(@JacksonInject StoragePluginRegistry engineRegistry, |
| @JsonProperty("userName") String userName, |
| @JsonProperty("formatPluginConfig") MapRDBFormatPluginConfig formatPluginConfig, |
| @JsonProperty("storageConfig") StoragePluginConfig storageConfig, |
| @JsonProperty("regionScanSpecList") List<RestrictedMapRDBSubScanSpec> regionScanSpecList, |
| @JsonProperty("columns") List<SchemaPath> columns, |
| @JsonProperty("maxRecordsToRead") int maxRecordsToRead, |
| @JsonProperty("tableType") String tableType, |
| @JsonProperty("schema") TupleMetadata schema) throws ExecutionSetupException { |
| this(userName, |
| engineRegistry.resolveFormat(storageConfig, formatPluginConfig, MapRDBFormatPlugin.class), |
| regionScanSpecList, columns, maxRecordsToRead, tableType, schema); |
| } |
| |
| public RestrictedMapRDBSubScan(String userName, MapRDBFormatPlugin formatPlugin, |
| List<RestrictedMapRDBSubScanSpec> maprDbSubScanSpecs, |
| List<SchemaPath> columns, int maxRecordsToRead, String tableType, TupleMetadata schema) { |
| super(userName, formatPlugin, new ArrayList<>(), columns, maxRecordsToRead, tableType, schema); |
| |
| for(RestrictedMapRDBSubScanSpec restrictedSpec : maprDbSubScanSpecs) { |
| getRegionScanSpecList().add(restrictedSpec); |
| } |
| |
| } |
| |
| @Override |
| public void addJoinForRestrictedSubScan(RowKeyJoin rjbatch) { |
| // currently, all subscan specs are sharing the same join batch instance |
| for (MapRDBSubScanSpec s : getRegionScanSpecList()) { |
| assert (s instanceof RestrictedMapRDBSubScanSpec); |
| ((RestrictedMapRDBSubScanSpec)s).setJoinForSubScan(rjbatch); |
| } |
| } |
| |
| @Override |
| public boolean isRestrictedSubScan() { |
| return true; |
| } |
| |
| } |