internal VistaDBConnection(VistaDBDatabase db): this()
{
if(db.Parameters != VDBDatabaseParam.InMemory)
throw new VistaDBException(VistaDBErrorCodes.DatabaseMustBeTemporary);
this.vistaDBSQL = new VistaDBLocalConnection(db);
this.exclusive = true;
this.connectionState = ConnectionState.Open;
}
public VistaDBLocalConnection(VistaDBDatabase db): this()
{
if(!VistaDBAPI.ivsql_AssignDatabaseConnection(this.connectionID, db.DatabaseId, null, true, false, 0, null, db.CaseSensitive))
throw new VistaDBException(VistaDBErrorCodes.DatabaseNotOpened);
db.FreeDatabase();
this.cultureID = db.Locale;
this.caseSensitivity = db.CaseSensitive;
this.opened = true;
}
internal VistaDBConnection(VistaDBDatabase db) : this()
{
if (db.Parameters != VDBDatabaseParam.InMemory)
{
throw new VistaDBException(VistaDBErrorCodes.DatabaseMustBeTemporary);
}
this.vistaDBSQL = new VistaDBLocalConnection(db);
this.exclusive = true;
this.connectionState = ConnectionState.Open;
}
public VistaDBLocalConnection(VistaDBDatabase db) : this()
{
if (!VistaDBAPI.ivsql_AssignDatabaseConnection(this.connectionID, db.DatabaseId, null, true, false, 0, null, db.CaseSensitive))
{
throw new VistaDBException(VistaDBErrorCodes.DatabaseNotOpened);
}
db.FreeDatabase();
this.cultureID = db.Locale;
this.caseSensitivity = db.CaseSensitive;
this.opened = true;
}
public DataTable LoadForeignKeys(string cn, string databaseName, string tableName)
{
DataTable metaData = new DataTable();
metaData.Columns.Add("PK_TABLE_CATALOG", Type.GetType("System.String"));
metaData.Columns.Add("PK_TABLE_SCHEMA", Type.GetType("System.String"));
metaData.Columns.Add("FK_TABLE_CATALOG", Type.GetType("System.String"));
metaData.Columns.Add("FK_TABLE_SCHEMA", Type.GetType("System.String"));
metaData.Columns.Add("FK_TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("PK_TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("ORDINAL", Type.GetType("System.Int32"));
metaData.Columns.Add("FK_NAME", Type.GetType("System.String"));
metaData.Columns.Add("PK_NAME", Type.GetType("System.String"));
metaData.Columns.Add("PK_COLUMN_NAME", Type.GetType("System.String"));
metaData.Columns.Add("FK_COLUMN_NAME", Type.GetType("System.String"));
try
{
Provider.VistaDB.VistaDBDatabase db = OpenDatabase(cn);
db.Connect();
Provider.VistaDB.VistaDBTable table = new Provider.VistaDB.VistaDBTable(db, tableName);
table.Open();
string[] fkeys = new string[0];
table.EnumForeignKeys(out fkeys);
string foreignKey = "";
string primaryTable = "";
string primaryKey = "";
if (fkeys != null)
{
foreach (string fkey in fkeys)
{
table.GetForeignKey(fkey, out foreignKey, out primaryTable, out primaryKey);
string[] fColumns = foreignKey.Split(new char[] { ';' });
string[] pColumns = primaryKey.Split(new char[] { ';' });
for (int i = 0; i < fColumns.GetLength(0); i++)
{
metaData.Rows.Add(new object[]
{
databaseName,
DBNull.Value,
DBNull.Value,
DBNull.Value,
tableName,
primaryTable,
0,
fkey,
"PKEY",
pColumns[i],
fColumns[i]
}
);
}
}
table.Close();
db.Close();
}
}
catch {}
return(metaData);
}
public DataTable LoadIndexes(string cn, string databaseName, string tableName)
{
DataTable metaData = new DataTable();
metaData.Columns.Add("TABLE_CATALOG", Type.GetType("System.String"));
metaData.Columns.Add("TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("INDEX_CATALOG", Type.GetType("System.String"));
metaData.Columns.Add("INDEX_NAME", Type.GetType("System.String"));
metaData.Columns.Add("UNIQUE", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLLATION", Type.GetType("System.Int16"));
metaData.Columns.Add("COLUMN_NAME", Type.GetType("System.String"));
try
{
Provider.VistaDB.VistaDBDatabase db = OpenDatabase(cn);
db.Connect();
Provider.VistaDB.VistaDBTable table = new Provider.VistaDB.VistaDBTable(db, tableName);
table.Open();
string[] indexes = new string[0];
table.EnumIndexes(out indexes);
bool active;
int orderIndex;
bool unique;
bool primary;
bool descending;
string keyExp;
if (indexes != null)
{
foreach (string index in indexes)
{
table.GetIndex(index, out active, out orderIndex, out unique, out primary, out descending, out keyExp);
if (orderIndex != 0) // && keyExp != "PrimaryKey" && keyExp != "PRIMARY_KEY")
{
if (keyExp != null && keyExp != string.Empty)
{
string[] columns = keyExp.Split(new char[] { ';' });
foreach (string colName in columns)
{
metaData.Rows.Add(new object[]
{
databaseName,
tableName,
databaseName,
index,
unique,
descending ? 2 : 1,
colName
});
}
}
}
}
}
table.Close();
db.Close();
}
catch {}
return(metaData);
}
public DataTable LoadColumns(string cn, string tableName)
{
DataTable metaData = new DataTable();
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"));
try
{
Provider.VistaDB.VistaDBDatabase db = OpenDatabase(cn);
db.Connect();
Provider.VistaDB.VistaDBTable table = new Provider.VistaDB.VistaDBTable(db, tableName);
table.Open();
for (int ordinal = 0; ordinal < table.ColumnCount(); ordinal++)
{
Provider.VistaDB.VistaDBColumn c = table.Columns[ordinal];
bool b = false;
string colName = c.Name;
string def = table.GetDefaultValue(colName, out b);
int width = c.ColumnWidth;
int dec = c.ColumnDecimals;
int length = 0;
int octLength = width;
if (c.Identity)
{
// While I'll see their point this is not typically how it is done
def = "";
}
string type = c.VistaDBType.ToString();
switch (type)
{
case "Character":
case "Varchar":
length = width;
width = 0;
dec = 0;
break;
case "Currency":
case "Double":
break;
default:
width = 0;
dec = 0;
break;
}
metaData.Rows.Add(new object[]
{
table.TableName,
c.Name,
ordinal,
c.AllowNull,
def == string.Empty ? false : true,
def,
c.Identity,
1,
(int)c.IdentityStep,
c.VistaDBType.ToString(),
width,
dec,
length,
octLength,
c.ColumnDescription,
c.PrimaryKey
});
}
table.Close();
db.Close();
}
catch {}
return(metaData);
}
/// <summary>
/// Connects to temporary database.
/// After connection created VistaDBDatabase object lose control to database.
/// </summary>
/// <param name="db">VistaDBDatabase object</param>
/// <returns>VistaDBConnection object</returns>
public static VistaDBConnection CreateTemporaryDatabase(VistaDBDatabase db)
{
return(new VistaDBConnection(db));
}
/// <summary>
/// Connects to temporary database.
/// After connection created VistaDBDatabase object lose control to database.
/// </summary>
/// <param name="db">VistaDBDatabase object</param>
/// <returns>VistaDBConnection object</returns>
public static VistaDBConnection CreateTemporaryDatabase(VistaDBDatabase db)
{
return new VistaDBConnection(db);
}
/// <summary>
/// Constructor. Set Database and TableName properties.
/// </summary>
/// <param name="database_">Database object</param>
/// <param name="tablename">Table name</param>
public VistaDBTable(VistaDBDatabase database_, string tablename)
{
InitClass();
triggerActive = new TriggerActiveCollection(this);
constraintActive = new ConstraintActiveCollection(this);
columnCollection = new ColumnCollection(this);
Database = database_;
tableName = tablename;
}
