content: /*
   * 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.lang.reflect.Type;
  import java.sql.Array;
  import java.sql.Blob;
  import java.sql.CallableStatement;
  import java.sql.Clob;
  import java.sql.DatabaseMetaData;
  import java.sql.NClob;
  import java.sql.PreparedStatement;
  import java.sql.SQLClientInfoException;
  import java.sql.SQLException;
  import java.sql.SQLWarning;
  import java.sql.SQLXML;
  import java.sql.Savepoint;
  import java.sql.Statement;
  import java.sql.Struct;
  import java.util.Map;
  import java.util.Properties;
  import java.util.concurrent.Executor;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.adapter.java.JavaTypeFactory;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.config.CalciteConnectionConfig;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.jdbc.CalciteConnection;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.jdbc.CalcitePrepare;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.linq4j.Enumerator;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.linq4j.Queryable;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.linq4j.tree.Expression;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.schema.SchemaPlus;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * Abstract wrapper for {@link CalciteConnection} to simplify extension.
   *
   * <p>Calcite JDBC model lacks convenient Connection class to extend that would also be supported by
   * its factories without significant copy-pasting.
   *
   * <p>The purpose of this class is to hide the delegation logic from the children classes ({@link
   * JdbcConnection}) to make them cleaner and easier to read. It has no functional significance.
   *
   * <p>This class only delegates to the underlying {@link CalciteConnection}, all added or modified
   * functionality should go into into subclasses.
   *
   * <p>Ultimately a patch to Calcite can be made to simplify this logic.
   */
  public abstract class CalciteConnectionWrapper implements CalciteConnection {
    private CalciteConnection connection;
  
    protected CalciteConnectionWrapper(CalciteConnection connection) {
      this.connection = connection;
    }
  
    protected CalciteConnection connection() {
      return connection;
    }
  
    @Override
    public SchemaPlus getRootSchema() {
      return connection.getRootSchema();
    }
  
    @Override
    public JavaTypeFactory getTypeFactory() {
      return connection.getTypeFactory();
    }
  
    @Override
    public Properties getProperties() {
      return connection.getProperties();
    }
  
    @Override
    public Statement createStatement() throws SQLException {
      return connection.createStatement();
    }
  
    @Override
    public PreparedStatement prepareStatement(String sql) throws SQLException {
      return connection.prepareStatement(sql);
    }
  
    @Override
    public CallableStatement prepareCall(String sql) throws SQLException {
      return connection.prepareCall(sql);
    }
  
    @Override
    public String nativeSQL(String sql) throws SQLException {
      return connection.nativeSQL(sql);
    }
  
    @Override
    public void setAutoCommit(boolean autoCommit) throws SQLException {
      connection.setAutoCommit(autoCommit);
    }
  
    @Override
    public boolean getAutoCommit() throws SQLException {
      return connection.getAutoCommit();
    }
  
    @Override
    public void commit() throws SQLException {
      connection.commit();
    }
  
    @Override
    public void rollback() throws SQLException {
      connection.rollback();
    }
  
    @Override
    public void close() throws SQLException {
      connection.close();
    }
  
    @Override
    public boolean isClosed() throws SQLException {
      return connection.isClosed();
    }
  
    @Override
    public DatabaseMetaData getMetaData() throws SQLException {
      return connection.getMetaData();
    }
  
    @Override
    public void setReadOnly(boolean readOnly) throws SQLException {
      connection.setReadOnly(readOnly);
    }
  
    @Override
    public boolean isReadOnly() throws SQLException {
      return connection.isReadOnly();
    }
  
    @Override
    public void setCatalog(String catalog) throws SQLException {
      connection.setCatalog(catalog);
    }
  
    @Override
    public String getCatalog() throws SQLException {
      return connection.getCatalog();
    }
  
    @Override
    public void setTransactionIsolation(int level) throws SQLException {
      connection.setTransactionIsolation(level);
    }
  
    @Override
    public int getTransactionIsolation() throws SQLException {
      return connection.getTransactionIsolation();
    }
  
    @Override
    public SQLWarning getWarnings() throws SQLException {
      return connection.getWarnings();
    }
  
    @Override
    public void clearWarnings() throws SQLException {
      connection.clearWarnings();
    }
  
    @Override
    public Statement createStatement(int resultSetType, int resultSetConcurrency)
        throws SQLException {
      return connection.createStatement(resultSetType, resultSetConcurrency);
    }
  
    @Override
    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
        throws SQLException {
      return connection.prepareStatement(sql, resultSetType, resultSetConcurrency);
    }
  
    @Override
    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency)
        throws SQLException {
      return connection.prepareCall(sql, resultSetType, resultSetConcurrency);
    }
  
    @Override
    public Map<String, Class<?>> getTypeMap() throws SQLException {
      return connection.getTypeMap();
    }
  
    @Override
    public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
      connection.setTypeMap(map);
    }
  
    @Override
    public void setHoldability(int holdability) throws SQLException {
      connection.setHoldability(holdability);
    }
  
    @Override
    public int getHoldability() throws SQLException {
      return connection.getHoldability();
    }
  
    @Override
    public Savepoint setSavepoint() throws SQLException {
      return connection.setSavepoint();
    }
  
    @Override
    public Savepoint setSavepoint(String name) throws SQLException {
      return connection.setSavepoint(name);
    }
  
    @Override
    public void rollback(Savepoint savepoint) throws SQLException {
      connection.rollback(savepoint);
    }
  
    @Override
    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
      connection.releaseSavepoint(savepoint);
    }
  
    @Override
    public Statement createStatement(
        int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
      return connection.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
    }
  
    @Override
    public PreparedStatement prepareStatement(
        String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
        throws SQLException {
      return connection.prepareStatement(
          sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }
  
    @Override
    public CallableStatement prepareCall(
        String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
        throws SQLException {
      return connection.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
    }
  
    @Override
    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
      return connection.prepareStatement(sql, autoGeneratedKeys);
    }
  
    @Override
    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
      return connection.prepareStatement(sql, columnIndexes);
    }
  
    @Override
    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
      return connection.prepareStatement(sql, columnNames);
    }
  
    @Override
    public Clob createClob() throws SQLException {
      return connection.createClob();
    }
  
    @Override
    public Blob createBlob() throws SQLException {
      return connection.createBlob();
    }
  
    @Override
    public NClob createNClob() throws SQLException {
      return connection.createNClob();
    }
  
    @Override
    public SQLXML createSQLXML() throws SQLException {
      return connection.createSQLXML();
    }
  
    @Override
    public boolean isValid(int timeout) throws SQLException {
      return connection.isValid(timeout);
    }
  
    @Override
    public void setClientInfo(String name, String value) throws SQLClientInfoException {
      connection.setClientInfo(name, value);
    }
  
    @Override
    public void setClientInfo(Properties properties) throws SQLClientInfoException {
      connection.setClientInfo(properties);
    }
  
    @Override
    public String getClientInfo(String name) throws SQLException {
      return connection.getClientInfo(name);
    }
  
    @Override
    public Properties getClientInfo() throws SQLException {
      return connection.getClientInfo();
    }
  
    @Override
    public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
      return connection.createArrayOf(typeName, elements);
    }
  
    @Override
    public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
      return connection.createStruct(typeName, attributes);
    }
  
    @Override
    public void setSchema(String schema) throws SQLException {
      connection.setSchema(schema);
    }
  
    // CalciteConnection.getSchema() marked nullable but Connection.getSchema() does not
    @SuppressWarnings("override.return")
    @Override
    public @Nullable String getSchema() throws SQLException {
      return connection.getSchema();
    }
  
    @Override
    public void abort(Executor executor) throws SQLException {
      connection.abort(executor);
    }
  
    @Override
    public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
      connection.setNetworkTimeout(executor, milliseconds);
    }
  
    @Override
    public int getNetworkTimeout() throws SQLException {
      return connection.getNetworkTimeout();
    }
  
    @Override
    public CalciteConnectionConfig config() {
      return connection.config();
    }
  
    @Override
    public CalcitePrepare.Context createPrepareContext() {
      return connection.createPrepareContext();
    }
  
    @Override
    public <T> T unwrap(Class<T> iface) throws SQLException {
      return connection.unwrap(iface);
    }
  
    @Override
    public boolean isWrapperFor(Class<?> iface) throws SQLException {
      return connection.isWrapperFor(iface);
    }
  
    @Override
    public <T> Queryable<T> createQuery(Expression expression, Class<T> rowType) {
      return connection.createQuery(expression, rowType);
    }
  
    @Override
    public <T> Queryable<T> createQuery(Expression expression, Type rowType) {
      return connection.createQuery(expression, rowType);
    }
  
    @Override
    public <T> T execute(Expression expression, Class<T> type) {
      return connection.execute(expression, type);
    }
  
    @Override
    public Object execute(Expression expression, Type type) {
      return connection.execute(expression, type);
    }
  
    @Override
    public <T> Enumerator<T> executeQuery(Queryable<T> queryable) {
      return connection.executeQuery(queryable);
    }
  }
  