/// <summary>
/// Search all table names and columns names in Database
/// </summary>
/// <remarks>
/// See https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/getschema-and-schema-collections
/// </remarks>
protected virtual IEnumerable <TableAndColumn> GetTablesDescription()
{
List <TableAndColumn> tableAndColumns = new List <TableAndColumn>();
var fields = new SchemaColumnsFields(ProductName);
// Columns
DataTable allColumns = Connection.GetSchema(fields.NAME);
// Tables et columns
foreach (DataRow row in allColumns.Rows)
{
tableAndColumns.Add(new TableAndColumn()
{
DatabaseFamily = fields.DatabaseFamily,
SequenceNumber = Convert.ToInt32(row[fields.SequenceNumber]),
SchemaName = Convert.ToString(row[fields.SchemaName]),
TableName = Convert.ToString(row[fields.TableName]),
ColumnName = Convert.ToString(row[fields.ColumnName]),
ColumnType = ExtractTypeNameOnly(Convert.ToString(row[fields.ColumnType])),
ColumnSize = row[fields.ColumnSize] != DBNull.Value ? Convert.ToInt32(row[fields.ColumnSize]) : 0,
NumericPrecision = ConvertToNullableInt32(row[fields.NumericPrecision]),
NumericScale = ConvertToNullableInt32(row[fields.NumericScale]),
IsColumnNullable = Convert.ToString(row[fields.IsColumnNullable]).ToBoolean(),
});
}
return(tableAndColumns);
}
/// <summary>
/// Search all table names and columns names in Database
/// </summary>
/// <remarks>
/// See https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/getschema-and-schema-collections
/// </remarks>
protected virtual IEnumerable <TableAndColumn> GetTablesDescription(string onlySchema = null)
{
List <TableAndColumn> tableAndColumns = new List <TableAndColumn>();
var fields = new SchemaColumnsFields(ProductName);
// Columns
DataTable allColumns;
if (String.IsNullOrEmpty(onlySchema))
{
// All schema
allColumns = Connection.GetSchema(fields.NAME);
}
else
{
// Only for a schema (for Oracle or SQL Server)
string[] restrictionsValues;
if (fields.DatabaseFamily == DatabaseFamily.Oracle)
{
restrictionsValues = new string[] { onlySchema, null, null }
}
;
else
{
restrictionsValues = new string[] { null, onlySchema, null }
};
allColumns = Connection.GetSchema(fields.NAME, restrictionsValues);
}
// Tables et columns
foreach (DataRow row in allColumns.Rows)
{
tableAndColumns.Add(new TableAndColumn()
{
DatabaseFamily = fields.DatabaseFamily,
SequenceNumber = Convert.ToInt32(row[fields.SequenceNumber]),
SchemaName = Convert.ToString(row[fields.SchemaName]),
TableName = Convert.ToString(row[fields.TableName]),
ColumnName = Convert.ToString(row[fields.ColumnName]),
ColumnType = ExtractTypeNameOnly(Convert.ToString(row[fields.ColumnType])),
ColumnSize = row[fields.ColumnSize] != DBNull.Value ? Convert.ToInt32(row[fields.ColumnSize]) : 0,
NumericPrecision = ConvertToNullableInt32(row[fields.NumericPrecision]),
NumericScale = ConvertToNullableInt32(row[fields.NumericScale]),
IsColumnNullable = Convert.ToString(row[fields.IsColumnNullable]).ToBoolean(),
});
}
return(tableAndColumns);
}
