| /* |
| * 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.beam.sdk.extensions.sql.impl; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| import org.apache.beam.sdk.extensions.sql.meta.Table; |
| import org.apache.beam.sdk.extensions.sql.meta.provider.TableProvider; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.linq4j.tree.Expression; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelProtoDataType; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Function; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Schema; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.SchemaPlus; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.SchemaVersion; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Schemas; |
| |
| /** Adapter from {@link TableProvider} to {@link Schema}. */ |
| public class BeamCalciteSchema implements Schema { |
| private JdbcConnection connection; |
| private TableProvider tableProvider; |
| private Map<String, BeamCalciteSchema> subSchemas; |
| |
| BeamCalciteSchema(JdbcConnection jdbcConnection, TableProvider tableProvider) { |
| this.connection = jdbcConnection; |
| this.tableProvider = tableProvider; |
| this.subSchemas = new HashMap<>(); |
| } |
| |
| public TableProvider getTableProvider() { |
| return tableProvider; |
| } |
| |
| public Map<String, String> getPipelineOptions() { |
| return connection.getPipelineOptionsMap(); |
| } |
| |
| public void setPipelineOption(String key, String value) { |
| Map<String, String> options = new HashMap<>(connection.getPipelineOptionsMap()); |
| options.put(key, value); |
| connection.setPipelineOptionsMap(options); |
| } |
| |
| public void removePipelineOption(String key) { |
| Map<String, String> options = new HashMap<>(connection.getPipelineOptionsMap()); |
| options.remove(key); |
| connection.setPipelineOptionsMap(options); |
| } |
| |
| public void removeAllPipelineOptions() { |
| connection.setPipelineOptionsMap(Collections.emptyMap()); |
| } |
| |
| @Override |
| public boolean isMutable() { |
| return true; |
| } |
| |
| @Override |
| public Schema snapshot(SchemaVersion version) { |
| return this; |
| } |
| |
| @Override |
| public Expression getExpression(SchemaPlus parentSchema, String name) { |
| return Schemas.subSchemaExpression(parentSchema, name, getClass()); |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| return tableProvider.getTables().keySet(); |
| } |
| |
| @Override |
| public RelProtoDataType getType(String name) { |
| return null; |
| } |
| |
| @Override |
| public Set<String> getTypeNames() { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.schema.Table getTable( |
| String name) { |
| Table table = tableProvider.getTable(name); |
| if (table == null) { |
| return null; |
| } |
| return new BeamCalciteTable( |
| tableProvider.buildBeamSqlTable(table), |
| getPipelineOptions(), |
| connection.getPipelineOptions()); |
| } |
| |
| @Override |
| public Set<String> getFunctionNames() { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Collection<Function> getFunctions(String name) { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Set<String> getSubSchemaNames() { |
| return tableProvider.getSubProviders(); |
| } |
| |
| @Override |
| public Schema getSubSchema(String name) { |
| if (!subSchemas.containsKey(name)) { |
| TableProvider subProvider = tableProvider.getSubProvider(name); |
| BeamCalciteSchema subSchema = |
| subProvider == null ? null : new BeamCalciteSchema(connection, subProvider); |
| subSchemas.put(name, subSchema); |
| } |
| return subSchemas.get(name); |
| } |
| } |