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.arrow.adbc.sql;
  
  import java.util.function.Function;
  import org.apache.arrow.vector.types.pojo.ArrowType;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /** Parameters to pass to SQL-based drivers to account for driver/vendor-specific SQL quirks. */
  public final class SqlQuirks {
    public static final Function<ArrowType, @Nullable String>
        DEFAULT_ARROW_TYPE_TO_SQL_TYPE_NAME_MAPPING =
            (arrowType) -> {
              switch (arrowType.getTypeID()) {
                case Null:
                case Struct:
                case List:
                case LargeList:
                case FixedSizeList:
                case Union:
                case Map:
                  return null;
                case Int:
                  // TODO:
                  return "INT";
                case FloatingPoint:
                  return null;
                case Utf8:
                  return "CLOB";
                case LargeUtf8:
                case Binary:
                case LargeBinary:
                case FixedSizeBinary:
                case Bool:
                case Decimal:
                case Date:
                case Time:
                case Timestamp:
                case Interval:
                case Duration:
                case NONE:
                default:
                  return null;
              }
            };
    Function<ArrowType, @Nullable String> arrowToSqlTypeNameMapping;
  
    public SqlQuirks() {
      this.arrowToSqlTypeNameMapping = DEFAULT_ARROW_TYPE_TO_SQL_TYPE_NAME_MAPPING;
    }
  
    /** The mapping from Arrow type to SQL type name, used to build queries. */
    public Function<ArrowType, @Nullable String> getArrowToSqlTypeNameMapping() {
      return arrowToSqlTypeNameMapping;
    }
  
    /** Create a new builder. */
    public static Builder builder() {
      return new Builder();
    }
  
    public static final class Builder {
      @Nullable Function<ArrowType, @Nullable String> arrowToSqlTypeNameMapping;
  
      public Builder arrowToSqlTypeNameMapping(
          @Nullable Function<ArrowType, @Nullable String> mapper) {
        this.arrowToSqlTypeNameMapping = mapper;
        return this;
      }
  
      public SqlQuirks build() {
        final SqlQuirks quirks = new SqlQuirks();
        if (arrowToSqlTypeNameMapping != null) {
          quirks.arrowToSqlTypeNameMapping = arrowToSqlTypeNameMapping;
        }
        return quirks;
      }
    }
  }
  