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.flink.connectors.kudu.table.utils;
  
  import org.apache.flink.table.api.DataTypes;
  import org.apache.flink.table.types.AtomicDataType;
  import org.apache.flink.table.types.DataType;
  import org.apache.flink.table.types.logical.*;
  import org.apache.flink.table.types.logical.utils.LogicalTypeDefaultVisitor;
  import org.apache.kudu.ColumnTypeAttributes;
  import org.apache.kudu.Type;
  
  import java.sql.Timestamp;
  
  import static org.apache.flink.util.Preconditions.checkNotNull;
  
  public class KuduTypeUtils {
  
      public static DataType toFlinkType(Type type, ColumnTypeAttributes typeAttributes) {
          switch (type) {
              case STRING:
                  return DataTypes.STRING();
              case FLOAT:
                  return DataTypes.FLOAT();
              case INT8:
                  return DataTypes.TINYINT();
              case INT16:
                  return DataTypes.SMALLINT();
              case INT32:
                  return DataTypes.INT();
              case INT64:
                  return DataTypes.BIGINT();
              case DOUBLE:
                  return DataTypes.DOUBLE();
              case DECIMAL:
                  return DataTypes.DECIMAL(typeAttributes.getPrecision(), typeAttributes.getScale());
              case BOOL:
                  return DataTypes.BOOLEAN();
              case BINARY:
                  return DataTypes.BYTES();
              case UNIXTIME_MICROS:
                  return new AtomicDataType(new TimestampType(3), Timestamp.class);
  
              default:
                  throw new IllegalArgumentException("Illegal var type: " + type);
          }
      }
  
      public static Type toKuduType(DataType dataType) {
          checkNotNull(dataType, "type cannot be null");
          LogicalType logicalType = dataType.getLogicalType();
          return logicalType.accept(new KuduTypeLogicalTypeVisitor(dataType));
      }
  
      private static class KuduTypeLogicalTypeVisitor extends LogicalTypeDefaultVisitor<Type> {
  
          private final DataType dataType;
  
          KuduTypeLogicalTypeVisitor(DataType dataType) {
              this.dataType = dataType;
          }
  
          @Override
          public Type visit(BooleanType booleanType) {
              return Type.BOOL;
          }
  
          @Override
          public Type visit(TinyIntType tinyIntType) {
              return Type.INT8;
          }
  
          @Override
          public Type visit(SmallIntType smallIntType) {
              return Type.INT16;
          }
  
          @Override
          public Type visit(IntType intType) {
              return Type.INT32;
          }
  
          @Override
          public Type visit(BigIntType bigIntType) {
              return Type.INT64;
          }
  
          @Override
          public Type visit(FloatType floatType) {
              return Type.FLOAT;
          }
  
          @Override
          public Type visit(DoubleType doubleType) {
              return Type.DOUBLE;
          }
  
          @Override
          public Type visit(DecimalType decimalType) {
              return Type.DECIMAL;
          }
  
          @Override
          public Type visit(TimestampType timestampType) {
              return Type.UNIXTIME_MICROS;
          }
  
          @Override
          public Type visit(VarCharType varCharType) {
              return Type.STRING;
          }
  
          @Override
          public Type visit(VarBinaryType varBinaryType) {
              return Type.BINARY;
          }
  
          @Override
          protected Type defaultMethod(LogicalType logicalType) {
              throw new UnsupportedOperationException(
                      String.format("Flink doesn't support converting type %s to Kudu type yet.", dataType.toString()));
          }
  
      }
  }
  