DataTable IPlugin.GetTableColumns(string database, string table)
{
DataTable metaData = new DataTable();
IVistaDBDatabase db = null;
try
{
metaData = context.CreateColumnsDataTable();
using (VistaDBConnection cn = new VistaDBConnection(context.ConnectionString))
{
db = DDA.OpenDatabase(this.GetFullDatabaseName(), VistaDBDatabaseOpenMode.NonexclusiveReadOnly, GetPassword(cn));
}
ArrayList tables = db.EnumTables();
IVistaDBTableSchema tblStructure = db.TableSchema(table);
foreach (IVistaDBColumnAttributes c in tblStructure)
{
string colName = c.Name;
string def = "";
if (tblStructure.Defaults.Contains(colName))
{
def = tblStructure.Defaults[colName].Expression;
}
int width = c.MaxLength; //c.ColumnWidth;
int dec = 0; //c.ColumnDecimals;
int length = 0;
int octLength = width;
IVistaDBIdentityInformation identity = null;
if (tblStructure.Identities.Contains(colName))
{
identity = tblStructure.Identities[colName];
}
string[] pks = null;
if (tblStructure.Indexes.Contains("PrimaryKey"))
{
pks = tblStructure.Indexes["PrimaryKey"].KeyExpression.Split(';');
}
else
{
foreach (IVistaDBIndexInformation pk in tblStructure.Indexes)
{
if (pk.Primary)
{
pks = pk.KeyExpression.Split(';');
break;
}
}
}
System.Collections.Hashtable pkCols = null;
if (pks != null)
{
pkCols = new Hashtable();
foreach (string pkColName in pks)
{
pkCols[pkColName] = true;
}
}
switch (c.Type)
{
case VistaDBType.Char:
case VistaDBType.NChar:
case VistaDBType.NText:
case VistaDBType.NVarChar:
case VistaDBType.Text:
case VistaDBType.VarChar:
length = width;
width = 0;
dec = 0;
break;
case VistaDBType.Money:
case VistaDBType.Float:
case VistaDBType.Decimal:
case VistaDBType.Real:
break;
default:
width = 0;
dec = 0;
break;
}
DataRow row = metaData.NewRow();
metaData.Rows.Add(row);
row["TABLE_NAME"] = tblStructure.Name;
row["COLUMN_NAME"] = c.Name;
row["ORDINAL_POSITION"] = c.RowIndex;
row["IS_NULLABLE"] = c.AllowNull;
row["COLUMN_HASDEFAULT"] = def == string.Empty ? false : true;
row["COLUMN_DEFAULT"] = def;
row["IS_AUTO_KEY"] = identity == null ? false : true;
row["AUTO_KEY_SEED"] = 1;
row["AUTO_KEY_INCREMENT"] = identity == null ? 0 : Convert.ToInt32(identity.StepExpression);
row["TYPE_NAME"] = c.Type.ToString();
row["NUMERIC_PRECISION"] = width;
row["NUMERIC_SCALE"] = dec;
row["CHARACTER_MAXIMUM_LENGTH"] = length;
row["CHARACTER_OCTET_LENGTH"] = octLength;
row["DESCRIPTION"] = c.Description;
string type = (string)row["TYPE_NAME"];
row["TYPE_NAME_COMPLETE"] = this.GetDataTypeNameComplete(type, length, (short)width, (short)dec);
if (c.Type == VistaDBType.Timestamp)
{
row["IS_COMPUTED"] = true;
}
row["IS_CONCURRENCY"] = type == "Timestamp" ? true : false;
}
}
finally
{
if (db != null)
{
db.Close();
}
}
return(metaData);
}
public DataTable GetColumns(string tableName)
{
DataTable metaData = new DataTable();
//metaData.Columns.Add("TABLE_CATALOG", Type.GetType("System.String"));
//metaData.Columns.Add("TABLE_SCHEMA", Type.GetType("System.String"));
//metaData.Columns.Add("TABLE_NAME", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_NAME", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_GUID", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_PROPID", Type.GetType("System.String"));
//metaData.Columns.Add("ORDINAL_POSITION", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_HASDEFAULT", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_DEFAULT", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_FLAGS", Type.GetType("System.String"));
//metaData.Columns.Add("IS_NULLABLE", Type.GetType("System.String"));
//metaData.Columns.Add("DATA_TYPE", Type.GetType("System.String"));
//metaData.Columns.Add("TYPE_GUID", Type.GetType("System.String"));
//metaData.Columns.Add("CHARACTER_MAXIMUM_LENGTH", Type.GetType("System.String"));
//metaData.Columns.Add("CHARACTER_OCTET_LENGTH", Type.GetType("System.String"));
//metaData.Columns.Add("NUMERIC_PRECISION", Type.GetType("System.String"));
//metaData.Columns.Add("NUMERIC_SCALE", Type.GetType("System.String"));
//metaData.Columns.Add("DATETIME_PRECISION", Type.GetType("System.String"));
//metaData.Columns.Add("CHARACTER_SET_CATALOG", Type.GetType("System.String"));
//metaData.Columns.Add("CHARACTER_SET_SCHEMA", Type.GetType("System.String"));
//metaData.Columns.Add("CHARACTER_SET_NAME", Type.GetType("System.String"));
//metaData.Columns.Add("COLLATION_CATALOG", Type.GetType("System.String"));
//metaData.Columns.Add("COLLATION_SCHEMA", Type.GetType("System.String"));
//metaData.Columns.Add("COLLATION_NAME", Type.GetType("System.String"));
//metaData.Columns.Add("DOMAIN_CATALOG", Type.GetType("System.String"));
//metaData.Columns.Add("DOMAIN_SCHEMA", Type.GetType("System.String"));
//metaData.Columns.Add("DOMAIN_NAME", Type.GetType("System.String"));
//metaData.Columns.Add("DESCRIPTION", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_LCID", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_COMPFLAGS", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_SORTID", Type.GetType("System.String"));
//metaData.Columns.Add("COLUMN_TDSCOLLATION", Type.GetType("System.String"));
//metaData.Columns.Add("IS_COMPUTED", Type.GetType("System.String"));
//metaData.Columns.Add("IS_AUTO_KEY", Type.GetType("System.String"));
//metaData.Columns.Add("AUTO_KEY_SEED", Type.GetType("System.String"));
//metaData.Columns.Add("AUTO_KEY_INCREMENT", Type.GetType("System.String"));
metaData.Columns.Add("TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("COLUMN_NAME", Type.GetType("System.String"));
metaData.Columns.Add("ORDINAL_POSITION", Type.GetType("System.Int32"));
metaData.Columns.Add("IS_NULLABLE", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_HASDEFAULT", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_DEFAULT", Type.GetType("System.String"));
metaData.Columns.Add("IS_AUTO_KEY", Type.GetType("System.Boolean"));
metaData.Columns.Add("AUTO_KEY_SEED", Type.GetType("System.Int32"));
metaData.Columns.Add("AUTO_KEY_INCREMENT", Type.GetType("System.Int32"));
metaData.Columns.Add("DATA_TYPE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("NUMERIC_PRECISION", Type.GetType("System.Int32"));
metaData.Columns.Add("NUMERIC_SCALE", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_MAXIMUM_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_OCTET_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("DESCRIPTION", Type.GetType("System.String"));
metaData.Columns.Add("IS_PRIMARY_KEY", Type.GetType("System.Boolean"));
IVistaDBDatabase db = DDA.OpenDatabase(dbName, VistaDBDatabaseOpenMode.NonexclusiveReadOnly, "");
ArrayList tables = db.EnumTables();
IVistaDBTableStructure tblStructure = db.TableStructure(tableName);
foreach (IVistaDBColumnAttributes c in tblStructure)
{
string colName = c.Name;
string def = "";
if (tblStructure.Defaults.Contains(colName))
{
def = tblStructure.Defaults[colName].Expression;
}
int width = c.MaxLength; //c.ColumnWidth;
int dec = 0; //c.ColumnDecimals;
int length = 0;
int octLength = width;
IVistaDBIdentityInformation identity = null;
if (tblStructure.Identities.Contains(colName))
{
identity = tblStructure.Identities[colName];
}
string[] pks = null;
if (tblStructure.Indexes.Contains("PrimaryKey"))
{
pks = tblStructure.Indexes["PrimaryKey"].KeyExpression.Split(',');
}
else
{
foreach (IVistaDBIndexInformation pk in tblStructure.Indexes)
{
if (pk.Primary)
{
pks = pk.KeyExpression.Split(',');
break;
}
}
}
System.Collections.Hashtable pkCols = null;
if (pks != null)
{
pkCols = new Hashtable();
foreach (string pkColName in pks)
{
pkCols[pkColName] = true;
}
}
switch (c.Type)
{
case VistaDBType.Char:
case VistaDBType.NChar:
case VistaDBType.NText:
case VistaDBType.NVarchar:
case VistaDBType.Text:
case VistaDBType.Varchar:
length = width;
width = 0;
dec = 0;
break;
case VistaDBType.Currency:
case VistaDBType.Double:
case VistaDBType.Decimal:
case VistaDBType.Single:
break;
default:
width = 0;
dec = 0;
break;
}
metaData.Rows.Add(new object[]
{
tblStructure.Name,
c.Name,
c.RowIndex,
c.AllowNull,
def == string.Empty ? false : true,
def,
identity == null ? false : true,
1,
identity == null ? 0 : Convert.ToInt32(identity.StepExpression),
c.Type.ToString(),
width,
dec,
length,
octLength,
c.Description,
pkCols == null ? false : pkCols.Contains(colName)
});
}
return(metaData);
}
