public ColumnDef(ColumnDef copySource, int index)
: this(
name : String.Format(copySource.Name, index),
size : copySource.Size,
type : copySource.Type,
nullable : copySource.Nullable,
copies : 1
)
{
}
public void AddColumn(ColumnDef columnDef)
{
this.Columns.Add(columnDef);
var tableCol = new DataColumn(columnDef.Name);
tableCol.AllowDBNull = columnDef.Nullable;
if (columnDef.Size != 0)
{
tableCol.MaxLength = columnDef.Size;
}
this.Table.Columns.Add(tableCol);
this.BulkCopy.ColumnMappings.Add(new SqlBulkCopyColumnMapping(columnDef.Name, columnDef.Name));
}
public static ColumnDef[] GetColumns(Type type, bool expandCopies = true)
{
ColumnDef[] columns;
lock (_columns)
{
if (_columns.TryGetValue(type, out columns))
{
return(columns);
}
FieldInfo[] fields = type.GetFields(BindingFlags.Static | BindingFlags.Public);
columns = new ColumnDef[fields.Length];
for (int i = 0; i < fields.Length; i++)
{
columns[i] = (ColumnDef)fields[i].GetValue(null);
}
_columns.Add(type, columns);
}
if (expandCopies)
{
var expanded = new List <ColumnDef>(columns.Length);
foreach (ColumnDef col in columns)
{
if (col.Copies <= 1)
{
expanded.Add(col);
}
else
{
for (int i = 1; i <= col.Copies; i++)
{
expanded.Add(new ColumnDef(col, i));
}
}
}
columns = expanded.ToArray();
}
return(columns);
}
public string GetCreateTableSql()
{
StringBuilder builder = new StringBuilder();
builder.AppendFormat("create table [dbo].{0} (\n", this.Table.TableName);
for (int i = 0; i < this.Columns.Count; i++)
{
ColumnDef col = this.Columns[i];
builder.AppendFormat("\t[{0}] [{1}] {2} {3} {4}, \n",
col.Name,
col.Type,
col.Size != 0 ? string.Format("({0})", col.Size) : null,
col.Nullable ? "null" : "not null",
col.DefaultValue != string.Empty ? string.Format("Default {0}", col.DefaultValue) : string.Empty
);
}
builder.Remove(builder.Length - 1, 1);
builder.Append(");");
string cmdText = builder.ToString();
return(cmdText);
}