private IList <HasMany> DetermineHasManyRelationships(Table table)
{
var hasManyRelationships = new List <HasMany>();
var conn = new CUBRIDConnection(connectionStr);
conn.Open();
try
{
using (conn)
{
var schema = new CUBRIDSchemaProvider(conn);
DataTable dt = schema.GetForeignKeys(new[] { "%" });
for (var i = 0; i < dt.Rows.Count; i++)
{
if (dt.Rows[i]["PKTABLE_NAME"].ToString() == table.Name)
{
var newHasManyItem = new HasMany
{
Reference = dt.Rows[i]["FKTABLE_NAME"].ToString(),
ConstraintName = dt.Rows[i]["FK_NAME"].ToString(),
ReferenceColumn = dt.Rows[i]["FKCOLUMN_NAME"].ToString()
};
hasManyRelationships.Add(newHasManyItem);
}
}
}
}
finally
{
conn.Close();
}
return(hasManyRelationships);
}
/// <summary>
/// Test CUBRIDSchemaProvider GetForeignKeys() method
/// </summary>
private static void Test_GetForeignKeys()
{
using (CUBRIDConnection conn = new CUBRIDConnection())
{
conn.ConnectionString = TestCases.connString;
conn.Open();
CUBRIDSchemaProvider schema = new CUBRIDSchemaProvider(conn);
DataTable dt = schema.GetForeignKeys(new string[] { "game" });
Debug.Assert(dt.Columns.Count == 9);
Debug.Assert(dt.Rows.Count == 2);
Debug.Assert(dt.Rows[1][0].ToString() == "event");
Debug.Assert(dt.Rows[1][1].ToString() == "code");
Debug.Assert(dt.Rows[1][2].ToString() == "game");
Debug.Assert(dt.Rows[1][3].ToString() == "event_code");
Debug.Assert(dt.Rows[1][4].ToString() == "1");
Debug.Assert(dt.Rows[1][5].ToString() == "1");
Debug.Assert(dt.Rows[1][6].ToString() == "1");
Debug.Assert(dt.Rows[1][7].ToString() == "fk_game_event_code");
Debug.Assert(dt.Rows[1][8].ToString() == "pk_event_code");
Debug.Assert(dt.Rows[0][0].ToString() == "athlete");
Debug.Assert(dt.Rows[0][1].ToString() == "code");
Debug.Assert(dt.Rows[0][2].ToString() == "game");
Debug.Assert(dt.Rows[0][3].ToString() == "athlete_code");
Debug.Assert(dt.Rows[0][4].ToString() == "1");
Debug.Assert(dt.Rows[0][5].ToString() == "1");
Debug.Assert(dt.Rows[0][6].ToString() == "1");
Debug.Assert(dt.Rows[0][7].ToString() == "fk_game_athlete_code");
Debug.Assert(dt.Rows[0][8].ToString() == "pk_athlete_code");
}
}
public Task <IList <Column> > GetTableDetails(Table table, string owner)
{
IList <Column> columns = new List <Column>();
var conn = new CUBRIDConnection(connectionStr);
conn.Open();
try
{
using (conn)
{
var schema = new CUBRIDSchemaProvider(conn);
DataTable dt_fk = schema.GetForeignKeys(new[] { table.Name.ToLower() });
string sqlInfo = String.Format("select * from [{0}] limit 1", table.Name.ToLower());
var adapter = new CUBRIDDataAdapter(sqlInfo, conn);
var tableInfo = new DataTable();
adapter.FillSchema(tableInfo, SchemaType.Source);
using (var reader = new DataTableReader(tableInfo))
{
DataTable schemaTable = reader.GetSchemaTable();
for (var k = 0; k < schemaTable.Rows.Count; k++)
{
string columnName = schemaTable.Rows[k]["ColumnName"].ToString().ToLower();
var isUnique = (bool)schemaTable.Rows[k]["IsUnique"];
var isNullable = (bool)schemaTable.Rows[k]["AllowDBNull"];
var isPrimaryKey = (bool)schemaTable.Rows[k]["IsKey"];
var isIdentity = (bool)schemaTable.Rows[k]["IsAutoIncrement"];
var dataLength = (int)schemaTable.Rows[k]["ColumnSize"];
int dataPrecision = 0;
if (schemaTable.Rows[k]["NumericPrecision"].ToString() != String.Empty)
{
dataPrecision = (int)schemaTable.Rows[k]["NumericPrecision"];
}
int dataScale = 0;
if (schemaTable.Rows[k]["NumericScale"].ToString() != String.Empty)
{
dataScale = (int)schemaTable.Rows[k]["NumericScale"];
}
bool isForeignKey = false;
string fkTableName = "";
string constraintName = "";
for (var i_fk = 0; i_fk < dt_fk.Rows.Count; i_fk++)
{
if (dt_fk.Rows[i_fk]["FKCOLUMN_NAME"].ToString().ToLower() == columnName)
{
isForeignKey = true;
fkTableName = dt_fk.Rows[i_fk]["PKTABLE_NAME"].ToString();
constraintName = dt_fk.Rows[i_fk]["FK_NAME"].ToString();
break;
}
}
string dataType;
using (var cmd = new CUBRIDCommand(sqlInfo, conn))
{
using (var CUBRIDReader = (CUBRIDDataReader)cmd.ExecuteReader())
{
CUBRIDReader.Read();
dataType = CUBRIDReader.GetColumnTypeName(k);
}
}
var m = new DataTypeMapper();
columns.Add(new Column
{
Name = columnName,
DataType = dataType,
IsNullable = isNullable,
IsUnique = isUnique,
IsPrimaryKey = isPrimaryKey,
IsForeignKey = isForeignKey,
IsIdentity = isIdentity,
DataLength = dataLength,
DataPrecision = dataPrecision,
DataScale = dataScale,
ForeignKeyTableName = fkTableName,
ConstraintName = constraintName,
MappedDataType = m.MapFromDBType(ServerType.CUBRID, dataType, null, null, null),
});
}
}
}
table.Columns = columns;
table.Owner = owner;
table.PrimaryKey = DeterminePrimaryKeys(table);
table.HasManyRelationships = DetermineHasManyRelationships(table);
}
finally
{
conn.Close();
}
return(Task.FromResult(columns));
}