/// <summary>
/// GenerateXmlElementFromColumn generate a xml element from column's definition.
/// </summary>
/// <param name="schema">schema name,</param>
/// <param name="table">table name</param>
/// <param name="c">column</param>
/// <param name="keepSymbol">whether keep symbol when convert column anme to property name.</param>
/// <param name="xtw">xml text writer</param>
/// <param name="elementName">name of the xml element</param>
/// <param name="sqlOnly">whether only generate the xml attributes that related to sql.</param>
private static void GenerateXmlElementFromColumn(ColumnInfo column, System.Xml.XmlTextWriter xtw)
{
string initialValue, cSharpType, sqlDefaultValue;
initialValue = "";
cSharpType = "";
#region initial type depended attributes
switch (GetDataType(column.DataType))
{
case SqlDataType.BigInt:
cSharpType = "long";
initialValue = "0";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(long.MaxValue).Length + 1;
break;
case SqlDataType.Int:
cSharpType = "int";
initialValue = "0";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(int.MaxValue).Length + 1;
break;
case SqlDataType.SmallInt:
cSharpType = "short";
initialValue = "0";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(short.MaxValue).Length + 1;
break;
case SqlDataType.TinyInt:
cSharpType = "byte";
initialValue = "0";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(byte.MaxValue).Length;
break;
case SqlDataType.Bit:
cSharpType = "bool";
initialValue = "false";
sqlDefaultValue = "0";
//uiLength = 5;
break;
case SqlDataType.Decimal:
case SqlDataType.Numeric:
cSharpType = "decimal";
initialValue = "0M";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(decimal.MaxValue).Length + 1;
//sqlType += "(" + c.DataType.NumericPrecision.ToString() + ", " + c.DataType.NumericScale.ToString() + ")";
break;
case SqlDataType.Money:
case SqlDataType.SmallMoney:
cSharpType = "decimal";
initialValue = "0M";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(decimal.MaxValue).Length + 1;
break;
case SqlDataType.Float:
cSharpType = "float";
initialValue = "0D";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(double.MaxValue).Length + 1;
break;
case SqlDataType.Real:
cSharpType = "float";
initialValue = "0F";
sqlDefaultValue = "0";
//uiLength = Utility.SafeToString(double.MaxValue).Length + 1;
break;
case SqlDataType.DateTime:
case SqlDataType.SmallDateTime:
cSharpType = "DateTime";
initialValue = "System.DateTime.MinValue";
sqlDefaultValue = "null";
//uiLength = 10;
break;
case SqlDataType.UniqueIdentifier:
cSharpType = "System.Guid";
initialValue = "System.Guid.Empty";
sqlDefaultValue = "null";
//uiLength = 32;
break;
case SqlDataType.Char:
case SqlDataType.NChar:
case SqlDataType.VarChar:
case SqlDataType.VarCharMax:
case SqlDataType.NVarChar:
case SqlDataType.NVarCharMax:
case SqlDataType.Text:
case SqlDataType.NText:
cSharpType = "string";
initialValue = "\"\"";
sqlDefaultValue = "''''";
//uiLength = c.DataType.MaximumLength;
//if (uiLength <= 0) uiLength = 0;
//if (c.DataType.SqlDataType != SqlDataType.Text
// && c.DataType.SqlDataType != SqlDataType.NText)
//{
// if (c.DataType.MaximumLength > 0)
// sqlType += "(" + c.DataType.MaximumLength.ToString() + ")";
// else
// {
// sqlType = sqlType.Remove(sqlType.Length - 3) + "(max)";
// }
//}
break;
//following SqlDataType are not processed in this version
case SqlDataType.Binary:
case SqlDataType.Image:
case SqlDataType.SysName:
case SqlDataType.Timestamp:
case SqlDataType.VarBinary:
case SqlDataType.VarBinaryMax:
case SqlDataType.Variant:
case SqlDataType.Xml:
case SqlDataType.UserDefinedType:
case SqlDataType.UserDefinedDataType:
cSharpType = "string";
initialValue = "\"\"";
sqlDefaultValue = "''''";
break;
default:
cSharpType = "string";
initialValue = "\"\"";
sqlDefaultValue = "''''";
break;
}
#endregion
//#region process nullable
//if (c.Nullable)
//{
// //if (!type.Equals("string", StringComparison.InvariantCultureIgnoreCase))
// //{
// // type = string.Concat(type, "?");
// //}
// initialValue = "null";
// sqlDefaultValue = "null";
//}
//#endregion
#region write xml element
xtw.WriteStartElement("property");
xtw.WriteAttributeString("sequence", column.Sequence.ToString());
xtw.WriteAttributeString("columnName", column.ColumnName);
xtw.WriteAttributeString("dataType", column.DataType);
xtw.WriteAttributeString("columnLength", column.ColumnLength.ToString());
xtw.WriteAttributeString("precisionLength", column.PrecisionLength.ToString());
xtw.WriteAttributeString("scale", column.Scale.ToString());
xtw.WriteAttributeString("defaultValue", column.DefaultValue);
xtw.WriteAttributeString("columnDescription", column.ColumnDescription);
xtw.WriteAttributeString("isIdentity", column.IsIdentity.ToString(System.Globalization.CultureInfo.InvariantCulture));
xtw.WriteAttributeString("isPrimaryKey", column.IsPrimaryKey.ToString(System.Globalization.CultureInfo.InvariantCulture));
xtw.WriteAttributeString("isNullable", column.IsNullable.ToString(System.Globalization.CultureInfo.InvariantCulture));
xtw.WriteAttributeString("lowerName", column.ColumnName.ToLower());
xtw.WriteAttributeString("field", string.Concat("_", column.ColumnName.ToLower()));
if (column.DataType == "nvarchar" || column.DataType == "varchar")
xtw.WriteAttributeString("sqlParameter", GetParameter(column.DataType, column.PrecisionLength));
else
xtw.WriteAttributeString("sqlParameter", GetParameter(column.DataType, column.ColumnLength));
xtw.WriteAttributeString("csharptype", cSharpType);
xtw.WriteAttributeString("getMethod", UtilityHelper.GetXxxMethod(column));
xtw.WriteAttributeString("pattern", UtilityHelper.GetPattern(column.DataType));
xtw.WriteAttributeString("initialValue", initialValue);
xtw.WriteEndElement();
#endregion
}
public static Collection<ColumnInfo> GetColumns(string connectionstring, string tablename)
{
Collection<ColumnInfo> columns = new Collection<ColumnInfo>();
DataTable dt = Sql2kDriver.GetColumns(connectionstring, tablename);
foreach (DataRow dataRow in dt.Rows)
{
ColumnInfo column = new ColumnInfo();
column.Sequence = DataConvert.GetInt32(dataRow["Sequence"]);
column.ColumnName = DataConvert.GetString(dataRow["Column_Name"]);
column.DataType = DataConvert.GetString(dataRow["Data_Type"]);
column.ColumnLength = DataConvert.GetInt32(dataRow["Column_Length"]);
column.PrecisionLength = DataConvert.GetInt32(dataRow["Precision_Length"]);
column.Scale = DataConvert.GetInt32(dataRow["Scale"]);
column.DefaultValue = DataConvert.GetString(dataRow["Default_Value"]);
column.ColumnDescription = DataConvert.GetString(dataRow["Column_Description"]);
column.IsIdentity = DataConvert.GetBool(DataConvert.GetInt32(dataRow["IsIdentity"]));
column.IsPrimaryKey = DataConvert.GetBool(DataConvert.GetInt32(dataRow["IsPrimaryKey"]));
column.IsNullable = DataConvert.GetBool(DataConvert.GetInt32(dataRow["IsNullable"]));
columns.Add(column);
}
return columns;
}
