/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */

#define USING_LOG_PREFIX SHARE

#include "ob_datum.h"
#include "ob_datum_util.h"

namespace oceanbase {
namespace common {

ObObjDatumMapType ObDatum::get_obj_datum_map_type(const ObObjType type)
{

  const static ObObjDatumMapType maps[] = {
      OBJ_DATUM_NULL,            // ObNullType
      OBJ_DATUM_8BYTE_DATA,      // ObTinyIntType
      OBJ_DATUM_8BYTE_DATA,      // ObSmallIntType
      OBJ_DATUM_8BYTE_DATA,      // ObMediumIntType
      OBJ_DATUM_8BYTE_DATA,      // ObInt32Type
      OBJ_DATUM_8BYTE_DATA,      // ObIntType
      OBJ_DATUM_8BYTE_DATA,      // ObUTinyIntType
      OBJ_DATUM_8BYTE_DATA,      // ObUSmallIntType
      OBJ_DATUM_8BYTE_DATA,      // ObUMediumIntType
      OBJ_DATUM_8BYTE_DATA,      // ObUInt32Type
      OBJ_DATUM_8BYTE_DATA,      // ObUInt64Type
      OBJ_DATUM_4BYTE_DATA,      // ObFloatType
      OBJ_DATUM_8BYTE_DATA,      // ObDoubleType
      OBJ_DATUM_4BYTE_DATA,      // ObUFloatType
      OBJ_DATUM_8BYTE_DATA,      // ObUDoubleType
      OBJ_DATUM_NUMBER,          // ObNumberType
      OBJ_DATUM_NUMBER,          // ObUNumberType
      OBJ_DATUM_8BYTE_DATA,      // ObDateTimeType
      OBJ_DATUM_8BYTE_DATA,      // ObTimestampType
      OBJ_DATUM_4BYTE_DATA,      // ObDateType
      OBJ_DATUM_8BYTE_DATA,      // ObTimeType
      OBJ_DATUM_1BYTE_DATA,      // ObYearType
      OBJ_DATUM_STRING,          // ObVarcharType
      OBJ_DATUM_STRING,          // ObCharType
      OBJ_DATUM_STRING,          // ObHexStringType
      OBJ_DATUM_8BYTE_DATA,      // ObExtendType
      OBJ_DATUM_8BYTE_DATA,      // ObUnknownType
      OBJ_DATUM_STRING,          // ObTinyTextType
      OBJ_DATUM_STRING,          // ObTextType
      OBJ_DATUM_STRING,          // ObMediumTextType
      OBJ_DATUM_STRING,          // ObLongTextType
      OBJ_DATUM_8BYTE_DATA,      // ObBitType
      OBJ_DATUM_8BYTE_DATA,      // ObEnumType
      OBJ_DATUM_8BYTE_DATA,      // ObSetType
      OBJ_DATUM_STRING,          // ObEnumInnerType
      OBJ_DATUM_STRING,          // ObSetInnerType
      OBJ_DATUM_4BYTE_LEN_DATA,  // ObTimestampTZType
      OBJ_DATUM_2BYTE_LEN_DATA,  // ObTimestampLTZType
      OBJ_DATUM_2BYTE_LEN_DATA,  // ObTimestampNanoType
      OBJ_DATUM_STRING,          // ObRawType
      OBJ_DATUM_8BYTE_DATA,      // ObIntervalYMType
      OBJ_DATUM_4BYTE_LEN_DATA,  // ObIntervalDSType
      OBJ_DATUM_NUMBER,          // ObNumberFloatType
      OBJ_DATUM_STRING,          // ObNVarchar2Type
      OBJ_DATUM_STRING,          // ObNCharType
      OBJ_DATUM_STRING,          // ObURowID
      OBJ_DATUM_LOB_LOCATOR,     // ObLobType
  };
  static_assert(sizeof(maps) / sizeof(maps[0]) == ObMaxType, "new added type should extend this map");
  ObObjDatumMapType t = OBJ_DATUM_MAPPING_MAX;
  if (type < 0 || type >= ObMaxType) {
    LOG_ERROR("invalid obj type", K(type));
  } else {
    t = maps[type];
  }

  return t;
}

uint32_t ObDatum::get_reserved_size(const ObObjDatumMapType type)
{
  static const uint32_t OBOBJ_DATUM_MAP_TYPE_TO_RES_SIZE_MAP[] = {
      OBJ_DATUM_NULL_RES_SIZE,            // OBJ_DATUM_NULL
      OBJ_DATUM_STRING_RES_SIZE,          // OBJ_DATUM_STRING
      OBJ_DATUM_NUMBER_RES_SIZE,          // OBJ_DATUM_NUMBER
      OBJ_DATUM_8BYTE_DATA_RES_SIZE,      // OBJ_DATUM_8BYTE_DATA
      OBJ_DATUM_4BYTE_DATA_RES_SIZE,      // OBJ_DATUM_4BYTE_DATA
      OBJ_DATUM_1BYTE_DATA_RES_SIZE,      // OBJ_DATUM_1BYTE_DATA
      OBJ_DATUM_4BYTE_LEN_DATA_RES_SIZE,  // OBJ_DATUM_4BYTE_LEN_DATA
      OBJ_DATUM_2BYTE_LEN_DATA_RES_SIZE,  // OBJ_DATUM_2BYTE_LEN_DATA
      OBJ_DATUM_LOB_LOCATOR_RES_SIZE,     // OBJ_DATUM_LOB_LOCATOR
  };
  static_assert(sizeof(OBOBJ_DATUM_MAP_TYPE_TO_RES_SIZE_MAP) / sizeof(OBOBJ_DATUM_MAP_TYPE_TO_RES_SIZE_MAP[0]) ==
                    OBJ_DATUM_MAPPING_MAX,
      "new added ObObjDatumMapType should extend this map");

  uint32_t res_size = 0;
  if (type >= OBJ_DATUM_MAPPING_MAX) {
    LOG_ERROR("invalid obj type", K(type));
  } else {
    res_size = OBOBJ_DATUM_MAP_TYPE_TO_RES_SIZE_MAP[type];
  }

  return res_size;
}

DEF_TO_STRING(ObDatum)
{
  int64_t pos = 0;
  int ret = OB_SUCCESS;
  const static int64_t STR_MAX_PRINT_LEN = 128L;
  if (null_) {
    J_NULL();
  } else {
    J_OBJ_START();
    BUF_PRINTF("len: %d, ptr: %p", len_, ptr_);
    if (len_ > 0) {
      OB_ASSERT(NULL != ptr_);
      const int64_t plen = std::min(static_cast<int64_t>(len_), static_cast<int64_t>(STR_MAX_PRINT_LEN));
      // print hex value
      BUF_PRINTF(", hex: ");
      if (OB_FAIL(hex_print(ptr_, plen, buf, buf_len, pos))) {
        // no logging in to_string function.
      } else {
        // maybe ObIntTC
        if (sizeof(int64_t) == len_) {
          BUF_PRINTF(", int: %ld", *int_);
          // maybe number with one digit
          if (1 == num_->desc_.len_) {
            BUF_PRINTF(", num_digit0: %u", num_->digits_[0]);
          }
        }
        // maybe printable C string
        int64_t idx = 0;
        while (idx < plen && isprint(ptr_[idx])) {
          idx++;
        }
        if (idx >= plen) {
          BUF_PRINTF(", cstr: %.*s", static_cast<int>(plen), ptr_);
        }
      }
    }
    J_OBJ_END();
  }
  return pos;
}

}  // end namespace common
}  // end namespace oceanbase
