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.parser;
  
  import java.io.Reader;
  import org.apache.beam.sdk.extensions.sql.impl.parser.impl.BeamSqlParserImpl;
  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.server.DdlExecutor;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.sql.parser.SqlAbstractParserImpl;
  import org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.sql.parser.SqlParserImplFactory;
  
  public class BeamSqlParser {
  
    private BeamSqlParser() {}
  
    /** Parser factory. */
    public static final SqlParserImplFactory FACTORY =
        new SqlParserImplFactory() {
          @Override
          public SqlAbstractParserImpl getParser(Reader stream) {
            return BeamSqlParserImpl.FACTORY.getParser(stream);
          }
  
          @Override
          public DdlExecutor getDdlExecutor() {
            return BeamSqlParser.DDL_EXECUTOR;
          }
        };
  
    /** Ddl Executor. */
    public static final DdlExecutor DDL_EXECUTOR =
        (context, node) -> {
          ((ExecutableStatement) node).execute(context);
        };
  
    interface ExecutableStatement {
      void execute(CalcitePrepare.Context context);
    }
  }
  