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after review fixes

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bell@sanja.is.com.ua
2003-11-23 21:26:43 +02:00
parent 9fbf629cdc
commit afe48d3ce4
7 changed files with 223 additions and 87 deletions
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122
sql/field.cc
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@ -169,6 +169,128 @@ static inline uint field_length_without_space(const char *ptr, uint length)
return (uint) (end-ptr);
}
/*
Tables of filed type compatibility.
There are tables for every type, table consist of list of types in which
given type can be converted without data lost, list should be ended with
FIELD_CAST_STOP
*/
static Field::field_cast_enum field_cast_decimal[]=
{Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_tiny[]=
{Field::FIELD_CAST_SHORT, Field::FIELD_CAST_MEDIUM, Field::FIELD_CAST_LONG,
Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_FLOAT, Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_short[]=
{Field::FIELD_CAST_MEDIUM, Field::FIELD_CAST_LONG, Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_FLOAT, Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_medium[]=
{Field::FIELD_CAST_LONG, Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_long[]=
{Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_longlong[]=
{Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_float[]=
{Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_double[]=
{Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_null[]=
{Field::FIELD_CAST_DECIMAL, Field::FIELD_CAST_TINY, Field::FIELD_CAST_SHORT,
Field::FIELD_CAST_MEDIUM, Field::FIELD_CAST_LONG, Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_FLOAT, Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_TIMESTAMP, Field::FIELD_CAST_YEAR,
Field::FIELD_CAST_DATE, Field::FIELD_CAST_NEWDATE,
Field::FIELD_CAST_TIME, Field::FIELD_CAST_DATETIME,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB,
Field::FIELD_CAST_GEOM, Field::FIELD_CAST_ENUM, Field::FIELD_CAST_SET,
Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_timestamp[]=
{Field::FIELD_CAST_DATETIME,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_year[]=
{Field::FIELD_CAST_SHORT, Field::FIELD_CAST_MEDIUM, Field::FIELD_CAST_LONG,
Field::FIELD_CAST_LONGLONG,
Field::FIELD_CAST_FLOAT, Field::FIELD_CAST_DOUBLE,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_date[]=
{Field::FIELD_CAST_DATETIME,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_newdate[]=
{Field::FIELD_CAST_DATETIME,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_time[]=
{Field::FIELD_CAST_DATETIME,
Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_datetime[]=
{Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_string[]=
{Field::FIELD_CAST_VARSTRING, Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_varstring[]=
{Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_blob[]=
{Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_geom[]=
{Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_enum[]=
{Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
static Field::field_cast_enum field_cast_set[]=
{Field::FIELD_CAST_STRING, Field::FIELD_CAST_VARSTRING,
Field::FIELD_CAST_BLOB, Field::FIELD_CAST_STOP};
// Array of pointers on conversion table for all fields types casting
static Field::field_cast_enum *field_cast_array[]=
{0, //FIELD_CAST_STOP
field_cast_decimal, field_cast_tiny, field_cast_short,
field_cast_medium, field_cast_long, field_cast_longlong,
field_cast_float, field_cast_double,
field_cast_null,
field_cast_timestamp, field_cast_year, field_cast_date, field_cast_newdate,
field_cast_time, field_cast_datetime,
field_cast_string, field_cast_varstring, field_cast_blob,
field_cast_geom, field_cast_enum, field_cast_set
};
bool Field::field_cast_compatible(Field::field_cast_enum type)
{
DBUG_ASSERT(type != FIELD_CAST_STOP);
Field::field_cast_enum *array= field_cast_array[field_cast_type()];
uint i= 0;
Field::field_cast_enum tp;
do
{
tp= array[i++];
if (tp == type)
return 1;
} while (tp != FIELD_CAST_STOP);
return 0;
}
/****************************************************************************
** Functions for the base classes
** This is an unpacked number.