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.calcite.adapter.file;
  
  import org.apache.calcite.adapter.java.JavaTypeFactory;
  import org.apache.calcite.linq4j.tree.Primitive;
  import org.apache.calcite.rel.type.RelDataType;
  
  import com.google.common.collect.ImmutableMap;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.Map;
  
  /**
   * Type of a field in a Web (HTML) table.
   *
   * <p>Usually, and unless specified explicitly in the header row, a field is
   * of type {@link #STRING}. But specifying the field type in the fields
   * makes it easier to write SQL.
   */
  enum FileFieldType {
    STRING(null, String.class),
    BOOLEAN(Primitive.BOOLEAN),
    BYTE(Primitive.BYTE),
    CHAR(Primitive.CHAR),
    SHORT(Primitive.SHORT),
    INT(Primitive.INT),
    LONG(Primitive.LONG),
    FLOAT(Primitive.FLOAT),
    DOUBLE(Primitive.DOUBLE),
    DATE(null, java.sql.Date.class),
    TIME(null, java.sql.Time.class),
    TIMESTAMP(null, java.sql.Timestamp.class);
  
    private final @Nullable Primitive primitive;
    private final Class clazz;
  
    private static final Map<String, FileFieldType> MAP;
  
    static {
      ImmutableMap.Builder<String, FileFieldType> builder =
          ImmutableMap.builder();
      for (FileFieldType value : values()) {
        builder.put(value.clazz.getSimpleName(), value);
  
        if (value.primitive != null) {
          builder.put(value.primitive.getPrimitiveName(), value);
        }
      }
      MAP = builder.build();
    }
  
    FileFieldType(Primitive primitive) {
      this(primitive, primitive.getBoxClass());
    }
  
    FileFieldType(@Nullable Primitive primitive, Class clazz) {
      this.primitive = primitive;
      this.clazz = clazz;
    }
  
    public RelDataType toType(JavaTypeFactory typeFactory) {
      return typeFactory.createJavaType(clazz);
    }
  
    public static FileFieldType of(String typeString) {
      return MAP.get(typeString);
    }
  }
  