| /* |
| * 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 static org.apache.beam.sdk.extensions.sql.impl.JdbcDriver.TOP_LEVEL_BEAM_SCHEMA; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.avatica.BuiltInConnectionProperty.TIME_ZONE; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.CalciteConnectionProperty.LEX; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.CalciteConnectionProperty.PARSER_FACTORY; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.CalciteConnectionProperty.SCHEMA; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.CalciteConnectionProperty.SCHEMA_FACTORY; |
| import static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.CalciteConnectionProperty.TYPE_SYSTEM; |
| |
| import java.util.Properties; |
| import org.apache.beam.sdk.extensions.sql.impl.parser.BeamSqlParser; |
| import org.apache.beam.sdk.extensions.sql.impl.planner.BeamRelDataTypeSystem; |
| import org.apache.beam.sdk.extensions.sql.meta.provider.TableProvider; |
| import org.apache.beam.sdk.util.ReleaseInfo; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.adapter.java.JavaTypeFactory; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.avatica.AvaticaConnection; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.avatica.AvaticaFactory; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.avatica.ConnectionProperty; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.avatica.UnregisteredDriver; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.config.Lex; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.jdbc.CalciteFactory; |
| import org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.jdbc.CalciteSchema; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| |
| /** |
| * Implements {@link CalciteFactory} that is used by Clacite JDBC driver to instantiate different |
| * JDBC objects, like connections, result sets, etc. |
| * |
| * <p>The purpose of this class is to intercept the connection creation and force a cache-less root |
| * schema ({@link |
| * org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.jdbc.SimpleCalciteSchema}). Otherwise |
| * Calcite uses {@link |
| * org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.jdbc.CachingCalciteSchema} that eagerly |
| * caches table information. This behavior does not work well for dynamic table providers. |
| */ |
| class JdbcFactory extends CalciteFactoryWrapper { |
| |
| JdbcFactory(CalciteFactory factory) { |
| super(factory); |
| } |
| |
| static JdbcFactory wrap(CalciteFactory calciteFactory) { |
| return new JdbcFactory(calciteFactory); |
| } |
| |
| @Override |
| public AvaticaConnection newConnection( |
| UnregisteredDriver driver, |
| AvaticaFactory avaticaFactory, |
| String url, |
| Properties info, |
| @Nullable CalciteSchema rootSchema, |
| @Nullable JavaTypeFactory typeFactory) { |
| |
| Properties connectionProps = ensureDefaultProperties(info); |
| CalciteSchema actualRootSchema = rootSchema; |
| if (rootSchema == null) { |
| actualRootSchema = CalciteSchema.createRootSchema(true, false, ""); |
| } |
| |
| return super.newConnection( |
| driver, avaticaFactory, url, connectionProps, actualRootSchema, typeFactory); |
| } |
| |
| /** |
| * Make sure required default properties are set. |
| * |
| * <p>Among other things sets up the parser class name, rel data type system and default schema |
| * factory. |
| * |
| * <p>The specified Beam schema factory will be used by Calcite to create the initial top level |
| * Beam schema. It can be later overridden by setting the schema via {@link |
| * JdbcConnection#setSchema(String, TableProvider)}. |
| */ |
| private Properties ensureDefaultProperties(Properties originalInfo) { |
| Properties info = new Properties(); |
| info.putAll(originalInfo); |
| |
| setIfNull(info, TIME_ZONE, "UTC"); |
| setIfNull(info, LEX, Lex.JAVA.name()); |
| setIfNull(info, PARSER_FACTORY, BeamSqlParser.class.getName() + "#FACTORY"); |
| setIfNull(info, TYPE_SYSTEM, BeamRelDataTypeSystem.class.getName()); |
| setIfNull(info, SCHEMA, TOP_LEVEL_BEAM_SCHEMA); |
| setIfNull(info, SCHEMA_FACTORY, BeamCalciteSchemaFactory.AllProviders.class.getName()); |
| setIfNull(info, "beam.userAgent", "BeamSQL/" + ReleaseInfo.getReleaseInfo().getVersion()); |
| |
| return info; |
| } |
| |
| private static void setIfNull(Properties info, ConnectionProperty key, String value) { |
| setIfNull(info, key.camelName(), value); |
| } |
| |
| private static void setIfNull(Properties info, String key, String value) { |
| // A null value indicates the default. We want to override defaults only. |
| if (info.getProperty(key) == null) { |
| info.setProperty(key, value); |
| } |
| } |
| } |