public IEnumerable<ColumInfo> GetColums(FbConnection con)
{
using (var command = con.CreateCommand())
{
command.CommandText =
$"select trim(rf.rdb$field_name) Name, f.rdb$field_type Type, f.rdb$field_sub_type SubType , f.rdb$character_length CharSize, trim(rf.rdb$field_source) FieldSource, rf.rdb$null_flag NullFlag, f.rdb$field_precision FieldPrecision, f.rdb$field_scale FieldScale, f.rdb$field_length FieldLength " +
"from rdb$relation_fields rf " +
"join rdb$relations r on rf.rdb$relation_name = r.rdb$relation_name " +
"and r.rdb$view_blr is not null " +
"and r.rdb$relation_type = 1 and r.rdb$system_flag = 0 " +
"join rdb$fields f on f.rdb$field_name = rf.rdb$field_source " +
$"where rf.rdb$relation_name = '{this.ViewName}' " +
"order by rf.rdb$field_position; ";
var reader = command.ExecuteReader();
while (reader.Read())
{
var size = (reader["CharSize"] == DBNull.Value) ? null : (short?)reader["CharSize"];
var subType = (reader["SubType"] == DBNull.Value) ? null : (short?)reader["SubType"];
var nullFlag = reader["NullFlag"] == DBNull.Value;
var precision = (reader["FieldPrecision"] == DBNull.Value) ? null : (short?)reader["FieldPrecision"];
var scale = (reader["FieldScale"] == DBNull.Value) ? null : (short?)reader["FieldScale"];
var fieldLength = (reader["FieldLength"] == DBNull.Value) ? null : (short?)reader["FieldLength"];
var type = new FieldType((short)reader["Type"], subType, size, precision, scale, fieldLength);
yield return new ColumInfo((string)reader["Name"], type, null, (string)reader["FieldSource"], nullFlag, true, "");
}
}
}
public DomainInfo(string name, FieldType type, string validationSource, string dafaultSource, bool isNullFlag)
{
DomainName = name;
DomainType = type;
ValidationSource = validationSource;
DefaultSource = dafaultSource;
IsNullFlag = isNullFlag;
}
public IEnumerable<ColumInfo> GetColums(FbConnection con)
{
var constraints = GetConstrains(con);
using (var command = con.CreateCommand())
{
command.CommandText =
$"select trim(rf.rdb$field_name) Name, f.rdb$field_type Type, f.rdb$field_sub_type SubType , f.rdb$character_length CharSize, trim(rf.rdb$field_source) FieldSource, rf.rdb$null_flag NullFlag, f.rdb$null_flag fieldNullFlag, f.rdb$field_precision FieldPrecision, f.rdb$field_scale FieldScale, f.rdb$field_length FieldLength, coalesce(rf.rdb$default_source, '') DefaultSource " +
"from rdb$relation_fields rf " +
"join rdb$relations r on rf.rdb$relation_name = r.rdb$relation_name " +
"and r.rdb$view_blr is null " +
$"and r.rdb$relation_type = 0 and r.rdb$system_flag = {SystemFlag} " +
"join rdb$fields f on f.rdb$field_name = rf.rdb$field_source " +
$"where rf.rdb$relation_name = '{this.TableName}' " +
"order by rf.rdb$field_position; ";
var reader = command.ExecuteReader();
while (reader.Read())
{
var name = (string)reader["Name"];
var size = (reader["CharSize"] == DBNull.Value) ? null : (short?)reader["CharSize"];
var subType = (reader["SubType"] == DBNull.Value) ? null : (short?)reader["SubType"];
var nullFlag = reader["NullFlag"] == DBNull.Value;
var fieldNullFlag = reader["FieldNullFlag"] == DBNull.Value;
var precision = (reader["FieldPrecision"] == DBNull.Value) ? null : (short?)reader["FieldPrecision"];
var scale = (reader["FieldScale"] == DBNull.Value) ? null : (short?)reader["FieldScale"];
var fieldLength = (reader["FieldLength"] == DBNull.Value) ? null : (short?)reader["FieldLength"];
var type = new FieldType((short)reader["Type"], subType, size, precision, scale, fieldLength);
var defaultSource = (string)reader["DefaultSource"];
var constraintInfo = new ColumConstraintsInfo();
if (constraints.ContainsKey(name))
{
constraintInfo = constraints[name];
}
yield return new ColumInfo(name, type, constraintInfo, (string)reader["FieldSource"], nullFlag, fieldNullFlag, defaultSource);
}
}
}
public IEnumerable<DomainInfo> GetDomain(FbConnection con)
{
using (var command = con.CreateCommand())
{
command.CommandText =
$"select distinct f.rdb$field_type Type, f.rdb$field_sub_type SubType , f.rdb$character_length CharSize, trim(f.rdb$field_name) FieldName, f.rdb$field_precision FieldPrecision, f.rdb$field_scale FieldScale, f.rdb$field_length FieldLength, coalesce(f.rdb$validation_source, '') ValidationSource, coalesce(f.rdb$default_source, '') DefaultSource, f.rdb$null_flag NullFlag " +
"from rdb$fields f " +
$"where f.rdb$FIELD_NAME not starting with 'RDB$' and f.rdb$FIELD_NAME not starting with 'MON$' and f.rdb$FIELD_NAME not starting with 'SEC$' " +
"order by f.rdb$field_name; ";
var reader = command.ExecuteReader();
while (reader.Read())
{
var name = (string)reader["FieldName"];
var size = (reader["CharSize"] == DBNull.Value) ? null : (short?)reader["CharSize"];
var subType = (reader["SubType"] == DBNull.Value) ? null : (short?)reader["SubType"];
var precision = (reader["FieldPrecision"] == DBNull.Value) ? null : (short?)reader["FieldPrecision"];
var scale = (reader["FieldScale"] == DBNull.Value) ? null : (short?)reader["FieldScale"];
var fieldLength = (reader["FieldLength"] == DBNull.Value) ? null : (short?)reader["FieldLength"];
var type = new FieldType((short)reader["Type"], subType, size, precision, scale, fieldLength);
var validationSource = (string)reader["ValidationSource"];
var defaultSource = (string)reader["DefaultSource"];
var nullFlag = reader["NullFlag"] == DBNull.Value;
yield return new DomainInfo(name, type, validationSource, defaultSource, nullFlag);
}
}
}
