field_common_properties.h

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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef FIELD_COMMON_OPERATIONS_INCLUDED
#define FIELD_COMMON_OPERATIONS_INCLUDED
 
#include "field_types.h"
 
/**
  @file field_common_properties.h
 
  @brief This file contains basic method for field types.
 
  @note This file can be imported from both the server and
  tools like mysqlbinlog, hence its simplicity
*/
 
/**
   Tests if field type is an integer
 
   @param type Field type, as returned by field->type()
 
   @returns true if integer type, false otherwise
 */
inline bool is_integer_type(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_TINY:
    case MYSQL_TYPE_SHORT:
    case MYSQL_TYPE_INT24:
    case MYSQL_TYPE_LONG:
    case MYSQL_TYPE_LONGLONG:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is a numeric type
 
  @param type Field type, as returned by field->type()
 
  @returns true if numeric type, false otherwise
*/
inline bool is_numeric_type(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_TINY:
    case MYSQL_TYPE_SHORT:
    case MYSQL_TYPE_INT24:
    case MYSQL_TYPE_LONG:
    case MYSQL_TYPE_LONGLONG:
    case MYSQL_TYPE_FLOAT:
    case MYSQL_TYPE_DOUBLE:
    case MYSQL_TYPE_DECIMAL:
    case MYSQL_TYPE_NEWDECIMAL:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is a string type
 
  @param type Field type, as returned by field->type()
 
  @returns true if string type, false otherwise
*/
inline bool is_string_type(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_VARCHAR:
    case MYSQL_TYPE_VAR_STRING:
    case MYSQL_TYPE_STRING:
    case MYSQL_TYPE_TINY_BLOB:
    case MYSQL_TYPE_MEDIUM_BLOB:
    case MYSQL_TYPE_LONG_BLOB:
    case MYSQL_TYPE_BLOB:
    case MYSQL_TYPE_ENUM:
    case MYSQL_TYPE_SET:
    case MYSQL_TYPE_JSON:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is temporal, i.e. represents
  DATE, TIME, DATETIME, TIMESTAMP or YEAR types in SQL.
 
  @param type    Field type, as returned by field->type().
  @retval true   If field type is temporal
  @retval false  If field type is not temporal
*/
inline bool is_temporal_type(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_TIME:
    case MYSQL_TYPE_DATETIME:
    case MYSQL_TYPE_TIMESTAMP:
    case MYSQL_TYPE_DATE:
    case MYSQL_TYPE_NEWDATE:
    case MYSQL_TYPE_YEAR:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is temporal and has time part,
  i.e. represents TIME, DATETIME or TIMESTAMP types in SQL.
 
  @param type    Field type, as returned by field->type().
  @retval true   If field type is temporal type with time part.
  @retval false  If field type is not temporal type with time part.
*/
inline bool is_temporal_type_with_time(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_TIME:
    case MYSQL_TYPE_DATETIME:
    case MYSQL_TYPE_TIMESTAMP:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is temporal and has date part,
  i.e. represents DATE, DATETIME or TIMESTAMP types in SQL.
 
  @param type    Field type, as returned by field->type().
  @retval true   If field type is temporal type with date part.
  @retval false  If field type is not temporal type with date part.
*/
inline bool is_temporal_type_with_date(enum_field_types type) {
  // A type which is_temporal_type() but not is_temporal_type_with_date() ?
  assert(type != MYSQL_TYPE_NEWDATE);
  switch (type) {
    case MYSQL_TYPE_DATE:
    case MYSQL_TYPE_DATETIME:
    case MYSQL_TYPE_TIMESTAMP:
      return true;
    default:
      return false;
  }
}
 
/**
  Tests if field type is temporal and has date and time parts,
  i.e. represents DATETIME or TIMESTAMP types in SQL.
 
  @param type    Field type, as returned by field->type().
  @retval true   If field type is temporal type with date and time parts.
  @retval false  If field type is not temporal type with date and time parts.
*/
inline bool is_temporal_type_with_date_and_time(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_DATETIME:
    case MYSQL_TYPE_TIMESTAMP:
      return true;
    default:
      return false;
  }
}
 
/**
   Recognizer for concrete data type (called real_type for some reason),
   returning true if it is one of the TIMESTAMP types.
*/
inline bool is_timestamp_type(enum_field_types type) {
  return type == MYSQL_TYPE_TIMESTAMP || type == MYSQL_TYPE_TIMESTAMP2;
}
 
/**
  Test if the field type contains information on being signed/unsigned.
  This includes numeric but also YEAR that still contains sign modifiers
  even if ignored.
 
  @param type Field type, as returned by field->type()
 
  @returns true if the type contains info on being signed/unsigned
*/
inline bool has_signedess_information_type(enum_field_types type) {
  switch (type) {
    case MYSQL_TYPE_TINY:
    case MYSQL_TYPE_SHORT:
    case MYSQL_TYPE_INT24:
    case MYSQL_TYPE_LONG:
    case MYSQL_TYPE_LONGLONG:
    case MYSQL_TYPE_YEAR:
    case MYSQL_TYPE_FLOAT:
    case MYSQL_TYPE_DOUBLE:
    case MYSQL_TYPE_DECIMAL:
    case MYSQL_TYPE_NEWDECIMAL:
      return true;
    default:
      return false;
  }
}
 
#endif /* FIELD_COMMON_OPERATIONS_INCLUDED */