internal int GetNextResult(out ISQLCursor cursor, ref short resultCols)
{
cursor = new FbCursor(this);
resultCols = 0;
return(-1);
}
public DataTable GetProcedures(string spName, ProcedureType procType)
{
StringBuilder sql = new StringBuilder();
StringBuilder where = new StringBuilder();
FbCommand select = new FbCommand(this.connection);
ISQLCursor cursor = null;
DataTable schema = BdpMetaDataHelper.GetProcedures();
short resultCols = 0;
sql.Append(
@"SELECT " +
"rdb$procedure_name AS ProcName, " +
"rdb$procedure_inputs AS Inputs, " +
"rdb$procedure_outputs AS Outputs " +
"FROM " +
"rdb$procedures");
if (spName != null && spName.Length > 0)
{
where.AppendFormat("rdb$procedure_name = '{0}'", spName);
}
if (where.Length > 0)
{
sql.AppendFormat(" WHERE {0} ", where.ToString());
}
sql.Append(" ORDER BY rdb$procedure_name");
// Prepare and execute the command
select.Prepare(sql.ToString(), 0);
select.Execute(out cursor, ref resultCols);
int recno = 0;
while (cursor.Next() != -1)
{
DataRow row = schema.NewRow();
row["Recno"] = recno++;
row["CatalogName"] = null;
row["SchemaName"] = null;
row["ProcName"] = ((FbCursor)cursor).GetValue(0).ToString().Trim();
row["ProcType"] = procType;
row["InParams"] = ((FbCursor)cursor).GetValue(1);
row["OutParams"] = ((FbCursor)cursor).GetValue(2);
schema.Rows.Add(row);
}
cursor.Release();
select.Release();
return(schema);
}
private void ExecuteDDL(string sql)
{
FbCommand command = new FbCommand(this.connection);
ISQLCursor cursor = null;
short numCols = 0;
command.Prepare(sql, 0);
command.Execute(out cursor, ref numCols);
command.Release();
}
public int Execute(out ISQLCursor cursor, ref short resultCols)
{
cursor = null;
resultCols = 0;
try
{
if (this.statement == null)
{
throw new InvalidOperationException("Command needs to be prepared before execution.");
}
if (this.transactionId == 0)
{
this.transactionId = this.connection.GetTransactionId();
if (this.transactionId < 0)
{
this.connection.BeginTransaction(this.transactionId, (int)(IsolationLevel.ReadCommitted));
}
}
ITransaction transaction = (ITransaction)this.connection.Transactions[this.transactionId];
if (this.statement.IsPrepared)
{
this.Close();
}
this.statement.Execute();
cursor = new FbCursor(this);
if (this.statement.StatementType != DbStatementType.Select &&
this.statement.StatementType != DbStatementType.SelectForUpdate &&
this.statement.StatementType != DbStatementType.StoredProcedure)
{
this.CommitImplicitTransaction();
}
else
{
resultCols = this.statement.Fields.Count;
}
}
catch (IscException e)
{
this.lastError = e;
this.RollbackImplicitTransaction();
}
return(this.GetErrorCode());
}
public int GetNextResult(out ISQLCursor cursor, ref short resultCols)
{
return this.command.GetNextResult(out cursor, ref resultCols);
}
private DataTable GetNonUniqueIndexes(string tableName)
{
StringBuilder sql = new StringBuilder();
StringBuilder where = new StringBuilder();
FbCommand select = new FbCommand(this.connection);
ISQLCursor cursor = null;
DataTable schema = BdpMetaDataHelper.GetIndices();
short resultCols = 0;
sql.Append(
@"SELECT " +
"idx.rdb$relation_name AS TableName, " +
"idx.rdb$index_name AS IndexName, " +
"seg.rdb$field_name AS ColumnName, " +
"seg.rdb$field_position AS FieldPosition, " +
"idx.rdb$index_type AS IndexType, " +
"idx.rdb$index_inactive AS InactiveIndex, " +
"idx.rdb$unique_flag AS IsUnique, " +
"idx.rdb$description AS Description " +
"FROM " +
"rdb$indices idx " +
"left join rdb$index_segments seg ON idx.rdb$index_name = seg.rdb$index_name ");
if (tableName != null && tableName.Length > 0)
{
where.AppendFormat("rdb$relation_name = '{0}' AND idx.rdb$unique_flag IS NULL", tableName);
}
if (where.Length > 0)
{
sql.AppendFormat(" WHERE {0} ", where.ToString());
}
sql.Append(" ORDER BY idx.rdb$relation_name, idx.rdb$index_name, seg.rdb$field_position");
/*
* RecNo
* CatalogName
* SchemaName
* TableName
* IndexName
* ColumnName
* ColumnPosition
* PKeyName
* IndexType
* SortOrder
* Filter
*/
// Prepare and execute the command
select.Prepare(sql.ToString(), 0);
select.Execute(out cursor, ref resultCols);
int recno = 0;
while (cursor.Next() != -1)
{
DataRow row = schema.NewRow();
row["Recno"] = recno++;
row["CatalogName"] = null;
row["SchemaName"] = null;
row["TableName"] = ((FbCursor)cursor).GetValue(0).ToString().Trim();
row["IndexName"] = ((FbCursor)cursor).GetValue(1).ToString().Trim();
row["ColumnName"] = ((FbCursor)cursor).GetValue(2).ToString().Trim();
row["ColumnPosition"] = ((FbCursor)cursor).GetValue(3);
row["PKeyName"] = String.Empty;
row["IndexType"] = IndexType.NonUnique;
row["SortOrder"] = String.Empty;
row["Filter"] = String.Empty;
schema.Rows.Add(row);
}
cursor.Release();
select.Release();
return(schema);
}
public DataTable GetProcedureParams(string spName, string paramName)
{
StringBuilder sql = new StringBuilder();
StringBuilder where = new StringBuilder();
FbCommand select = new FbCommand(this.connection);
ISQLCursor cursor = null;
short resultCols = 0;
DataTable schema = BdpMetaDataHelper.GetProcedureParams();
sql.Append(
@"SELECT " +
"pp.rdb$procedure_name AS ProcName, " +
"pp.rdb$parameter_name AS ParamName, " +
"pp.rdb$parameter_type AS ParamType, " +
"pp.rdb$parameter_number AS ParamPosition, " +
"fld.rdb$field_type AS ParamDataType, " +
"fld.rdb$field_sub_type AS ParamSubType, " +
"fld.rdb$field_length AS ParamSize, " +
"fld.rdb$field_precision AS ParamPrecision, " +
"fld.rdb$field_scale AS ParamScale " +
"FROM " +
"rdb$procedure_parameters pp " +
"left join rdb$fields fld ON pp.rdb$field_source = fld.rdb$field_name " +
"left join rdb$character_sets cs ON cs.rdb$character_set_id = fld.rdb$character_set_id " +
"left join rdb$collations coll ON (coll.rdb$collation_id = fld.rdb$collation_id AND coll.rdb$character_set_id = fld.rdb$character_set_id) ");
if (spName != null && spName.Length > 0)
{
where.AppendFormat("pp.rdb$procedure_name = '{0}'", spName);
}
if (paramName != null && paramName.Length > 0)
{
if (where.Length > 0)
{
where.Append(" AND ");
}
where.AppendFormat("pp.rdb$parameter_name = '{0}'", paramName);
}
if (where.Length > 0)
{
sql.AppendFormat(" WHERE {0} ", where.ToString());
}
// Prepare and execute the command
select.Prepare(sql.ToString(), 0);
select.Execute(out cursor, ref resultCols);
int recno = 0;
while (cursor.Next() != -1)
{
DataRow row = schema.NewRow();
int blrType = 0;
int subType = 0;
int length = 0;
int precision = 0;
int scale = 0;
int direction = 0;
if (((FbCursor)cursor).GetValue(4) != null &&
((FbCursor)cursor).GetValue(4) != DBNull.Value)
{
blrType = Convert.ToInt32(((FbCursor)cursor).GetValue(4));
}
if (((FbCursor)cursor).GetValue(5) != null &&
((FbCursor)cursor).GetValue(5) != DBNull.Value)
{
subType = Convert.ToInt32(((FbCursor)cursor).GetValue(5));
}
if (((FbCursor)cursor).GetValue(6) != null &&
((FbCursor)cursor).GetValue(6) != DBNull.Value)
{
length = Convert.ToInt32(((FbCursor)cursor).GetValue(6));
}
if (((FbCursor)cursor).GetValue(7) != null &&
((FbCursor)cursor).GetValue(7) != DBNull.Value)
{
precision = Convert.ToInt32(((FbCursor)cursor).GetValue(7));
}
if (((FbCursor)cursor).GetValue(8) != null &&
((FbCursor)cursor).GetValue(8) != DBNull.Value)
{
scale = Convert.ToInt32(((FbCursor)cursor).GetValue(8));
}
if (((FbCursor)cursor).GetValue(2) != null &&
((FbCursor)cursor).GetValue(2) != DBNull.Value)
{
direction = Convert.ToInt16(((FbCursor)cursor).GetValue(2));
}
DbDataType paramDbType = TypeHelper.GetDbDataType(blrType, subType, scale);
row["Recno"] = recno++;
row["CatalogName"] = null;
row["SchemaName"] = null;
row["ProcName"] = ((FbCursor)cursor).GetValue(0).ToString().Trim();
row["ParamName"] = ((FbCursor)cursor).GetValue(1).ToString().Trim();
if (direction == 0)
{
row["ParamType"] = ParameterDirection.Input;
}
else if (direction == 1)
{
row["ParamType"] = ParameterDirection.Output;
}
row["ParamPosition"] = Convert.ToInt16(((FbCursor)cursor).GetValue(3));
row["ParamDataType"] = BdpTypeHelper.GetBdpType(paramDbType);
row["ParamSubType"] = BdpTypeHelper.GetBdpSubType(paramDbType);
row["ParamTypeName"] = TypeHelper.GetDataTypeName(paramDbType);
row["ParamLength"] = length;
row["ParamPrecision"] = precision;
row["ParamScale"] = Convert.ToInt16(scale);
row["ParamNullable"] = true;
schema.Rows.Add(row);
}
cursor.Release();
select.Release();
return(schema);
}
public DataTable GetColumns(
string tableName,
string columnName,
ColumnType columnType)
{
StringBuilder sql = new StringBuilder();
StringBuilder where = new StringBuilder();
FbCommand select = new FbCommand(this.connection);
ISQLCursor cursor = null;
DataTable schema = BdpMetaDataHelper.GetColumns();
short resultCols = 0;
sql.Append(
@"SELECT " +
"rfr.rdb$relation_name AS TableName, " +
"rfr.rdb$field_name AS ColumName, " +
"rfr.rdb$field_position AS ColumnPosition, " +
"fld.rdb$field_type AS ColumnDataType, " +
"fld.rdb$field_sub_type AS ColumnSubType, " +
"fld.rdb$field_length AS ColumnSize, " +
"fld.rdb$field_precision AS ColumnPrecision, " +
"fld.rdb$field_scale AS ColumnScale, " +
"coalesce(fld.rdb$null_flag, rfr.rdb$null_flag) AS ColumnNullable " +
"FROM " +
"rdb$relation_fields rfr " +
"left join rdb$fields fld ON rfr.rdb$field_source = fld.rdb$field_name ");
if (tableName != null && tableName.Length > 0)
{
where.AppendFormat("rfr.rdb$relation_name = '{0}'", tableName);
}
if (columnName != null && columnName.Length > 0)
{
if (where.Length > 0)
{
where.Append(" AND ");
}
where.AppendFormat("rfr.rdb$field_name = '{0}'", columnName);
}
if (where.Length > 0)
{
sql.AppendFormat(" WHERE {0} ", where.ToString());
}
sql.Append(" ORDER BY rfr.rdb$relation_name, rfr.rdb$field_position");
// Prepare and execute the command
select.Prepare(sql.ToString(), 0);
select.Execute(out cursor, ref resultCols);
int recno = 0;
while (cursor.Next() != -1)
{
DataRow row = schema.NewRow();
row["Recno"] = recno++;
row["CatalogName"] = null;
row["SchemaName"] = null;
row["TableName"] = ((FbCursor)cursor).GetValue(0).ToString().Trim();
row["ColumnName"] = ((FbCursor)cursor).GetValue(1).ToString().Trim();
row["ColumnPosition"] = ((FbCursor)cursor).GetValue(2);
row["ColumnType"] = columnType;
row["ColumnDataType"] = ((FbCursor)cursor).GetValue(3);
row["ColumnTypeName"] = String.Empty;
row["ColumnSubtype"] = ((FbCursor)cursor).GetValue(4);
row["ColumnLength"] = ((FbCursor)cursor).GetValue(5);
row["ColumnPrecision"] = ((FbCursor)cursor).GetValue(6);
row["ColumnScale"] = ((FbCursor)cursor).GetValue(7);
if (((FbCursor)cursor).GetValue(8) == DBNull.Value)
{
row["ColumnNullable"] = true;
}
else
{
row["ColumnNullable"] = false;
}
schema.Rows.Add(row);
}
cursor.Release();
select.Release();
return(schema);
}
public DataTable GetTables(string tableName, TableType tableType)
{
StringBuilder sql = new StringBuilder();
StringBuilder where = new StringBuilder();
FbCommand select = new FbCommand(this.connection);
ISQLCursor cursor = null;
DataTable schema = BdpMetaDataHelper.GetTables();
short resultCols = 0;
sql.Append(
@"SELECT " +
"rdb$relation_name AS TableName " +
"FROM " +
"rdb$relations");
if (tableName != null && tableName.Length > 0)
{
where.AppendFormat("rdb$relation_name = '{0}'", tableName);
}
if (where.Length > 0)
{
where.Append(" AND ");
}
switch (tableType)
{
case TableType.SystemTable:
where.Append("rdb$view_source IS null AND rdb$system_flag = 1");
break;
case TableType.View:
where.Append("rdb$view_source IS NOT null AND rdb$system_flag = 0");
break;
case TableType.Table:
default:
where.Append("rdb$view_source IS NULL AND rdb$system_flag = 0");
break;
}
if (where.Length > 0)
{
sql.AppendFormat(" WHERE {0} ", where.ToString());
}
sql.Append(" ORDER BY rdb$system_flag, rdb$owner_name, rdb$relation_name");
// Prepare and execute the command
select.Prepare(sql.ToString(), 0);
select.Execute(out cursor, ref resultCols);
int recno = 0;
while (cursor.Next() != -1)
{
DataRow row = schema.NewRow();
row["Recno"] = recno++;
row["CatalogName"] = null;
row["SchemaName"] = null;
row["TableName"] = ((FbCursor)cursor).GetValue(0).ToString().Trim();
row["TableType"] = tableType;
schema.Rows.Add(row);
}
cursor.Release();
select.Release();
return(schema);
}
// Added by RPH to support Delphi 2006
public DataTable GetSchemaTable(IDataReader reader, IDbCommand command,
ISQLCursor cursor)
{
DataTable schema = BdpMetaDataHelper.GetSchemaTable();
/* Prepare the command that is requested for obtain
* schema information
*/
FbCommand c = (FbCommand)this.connection.GetSQLCommand();
c.Prepare(command.CommandText, (short)command.Parameters.Count);
Descriptor fields = c.GetFieldsDescriptor();
/* Prepare the command used to obtain schema information like
* Primary and Unique Key information ...
*/
short numCols = 0;
// RPH - currentTable is no longer used.
//string currentTable = "";
FbCommand sc = (FbCommand)this.connection.GetSQLCommand();
sc.Prepare(this.GetSchemaCommandText(), 2);
// Fill schema information
for (int i = 0; i < fields.Count; i++)
{
bool isKeyColumn = false;
bool isUnique = false;
bool isReadOnly = true;
// Get schema information
sc.SetParameter(0, 0, ParameterDirection.Input, BdpType.String, BdpType.stFixed, 0, 0, 31, fields[i].Relation, true);
sc.SetParameter(1, 0, ParameterDirection.Input, BdpType.String, BdpType.stFixed, 0, 0, 31, fields[i].Name, true);
sc.Execute(out cursor, ref numCols);
if (cursor.Next() == 0)
{
if (((FbCursor)cursor).GetValue(0) != System.DBNull.Value ||
((FbCursor)cursor).GetValue(1) != System.DBNull.Value)
{
isReadOnly = true;
}
else
{
isReadOnly = false;
}
if (Convert.ToInt32(((FbCursor)cursor).GetValue(2)) > 0)
{
isKeyColumn = true;
}
if (Convert.ToInt32(((FbCursor)cursor).GetValue(3)) > 0)
{
isUnique = true;
}
}
// Add column schema information
DataRow row = schema.NewRow();
row["ColumnName"] = fields[i].Alias.Length > 0 ? fields[i].Alias : fields[i].Name;
row["ColumnOrdinal"] = i;
row["ColumnSize"] = fields[i].GetSize();
if (fields[i].IsNumeric())
{
row["NumericPrecision"] = fields[i].GetSize();
row["NumericScale"] = fields[i].NumericScale * (-1);
}
row["DataType"] = fields[i].GetSystemType();
row["ProviderType"] = BdpTypeHelper.GetBdpType(fields[i].DbDataType);
row["IsLong"] = fields[i].IsLong();
row["AllowDBNull"] = fields[i].AllowDBNull();
row["NumericPrecision"] = 0;
row["IsAutoIncrement"] = false;
row["IsRowVersion"] = false;
row["IsReadOnly"] = isReadOnly;
row["IsUnique"] = isUnique;
row["IsKeyColumn"] = isKeyColumn;
row["BaseSchemaName"] = DBNull.Value;
row["BaseCatalogName"] = DBNull.Value;
row["BaseTableName"] = fields[i].Relation;
row["BaseColumnName"] = fields[i].Name;
row["ProviderSubType"] = BdpTypeHelper.GetBdpSubType(fields[i].DbDataType);;
// RPH - Modified to support multiple tables in the command. CheckColumns
// in FbResolver will fail when using multiple tables in a command.
schema.Rows.Add(row);
sc.Close();
}
// Free resources
cursor.Release();
c.Release();
sc.Release();
return(schema);
}
public int GetNextResult(out ISQLCursor cursor, ref short resultCols)
{
return(this.command.GetNextResult(out cursor, ref resultCols));
}
// Added by RPH to support Delphi 2006
public DataTable GetSchemaTable(IDataReader reader, IDbCommand command,
ISQLCursor cursor)
{
DataTable schema = BdpMetaDataHelper.GetSchemaTable();
/* Prepare the command that is requested for obtain
* schema information
*/
FbCommand c = (FbCommand)this.connection.GetSQLCommand();
c.Prepare(command.CommandText, (short)command.Parameters.Count);
Descriptor fields = c.GetFieldsDescriptor();
/* Prepare the command used to obtain schema information like
* Primary and Unique Key information ...
*/
short numCols = 0;
// RPH - currentTable is no longer used.
//string currentTable = "";
FbCommand sc = (FbCommand)this.connection.GetSQLCommand();
sc.Prepare(this.GetSchemaCommandText(), 2);
// Fill schema information
for (int i = 0; i < fields.Count; i++)
{
bool isKeyColumn = false;
bool isUnique = false;
bool isReadOnly = true;
// Get schema information
sc.SetParameter(0, 0, ParameterDirection.Input, BdpType.String, BdpType.stFixed, 0, 0, 31, fields[i].Relation, true);
sc.SetParameter(1, 0, ParameterDirection.Input, BdpType.String, BdpType.stFixed, 0, 0, 31, fields[i].Name, true);
sc.Execute(out cursor, ref numCols);
if (cursor.Next() == 0)
{
if (((FbCursor)cursor).GetValue(0) != System.DBNull.Value ||
((FbCursor)cursor).GetValue(1) != System.DBNull.Value)
{
isReadOnly = true;
}
else
{
isReadOnly = false;
}
if (Convert.ToInt32(((FbCursor)cursor).GetValue(2)) > 0)
{
isKeyColumn = true;
}
if (Convert.ToInt32(((FbCursor)cursor).GetValue(3)) > 0)
{
isUnique = true;
}
}
// Add column schema information
DataRow row = schema.NewRow();
row["ColumnName"] = fields[i].Alias.Length > 0 ? fields[i].Alias : fields[i].Name;
row["ColumnOrdinal"] = i;
row["ColumnSize"] = fields[i].GetSize();
if (fields[i].IsNumeric())
{
row["NumericPrecision"] = fields[i].GetSize();
row["NumericScale"] = fields[i].NumericScale*(-1);
}
row["DataType"] = fields[i].GetSystemType();
row["ProviderType"] = BdpTypeHelper.GetBdpType(fields[i].DbDataType);
row["IsLong"] = fields[i].IsLong();
row["AllowDBNull"] = fields[i].AllowDBNull();
row["NumericPrecision"] = 0;
row["IsAutoIncrement"] = false;
row["IsRowVersion"] = false;
row["IsReadOnly"] = isReadOnly;
row["IsUnique"] = isUnique;
row["IsKeyColumn"] = isKeyColumn;
row["BaseSchemaName"] = DBNull.Value;
row["BaseCatalogName"] = DBNull.Value;
row["BaseTableName"] = fields[i].Relation;
row["BaseColumnName"] = fields[i].Name;
row["ProviderSubType"] = BdpTypeHelper.GetBdpSubType(fields[i].DbDataType);;
// RPH - Modified to support multiple tables in the command. CheckColumns
// in FbResolver will fail when using multiple tables in a command.
schema.Rows.Add(row);
sc.Close();
}
// Free resources
cursor.Release();
c.Release();
sc.Release();
return schema;
}
internal int GetNextResult(out ISQLCursor cursor, ref short resultCols)
{
cursor = new FbCursor(this);
resultCols = 0;
return -1;
}
public int Execute(out ISQLCursor cursor, ref short resultCols)
{
cursor = null;
resultCols = 0;
try
{
if (this.statement == null)
{
throw new InvalidOperationException("Command needs to be prepared before execution.");
}
if (this.transactionId == 0)
{
this.transactionId = this.connection.GetTransactionId();
if (this.transactionId < 0)
{
this.connection.BeginTransaction(this.transactionId, (int)(IsolationLevel.ReadCommitted));
}
}
ITransaction transaction = (ITransaction)this.connection.Transactions[this.transactionId];
if (this.statement.IsPrepared)
{
this.Close();
}
this.statement.Execute();
cursor = new FbCursor(this);
if (this.statement.StatementType != DbStatementType.Select &&
this.statement.StatementType != DbStatementType.SelectForUpdate &&
this.statement.StatementType != DbStatementType.StoredProcedure)
{
this.CommitImplicitTransaction();
}
else
{
resultCols = this.statement.Fields.Count;
}
}
catch (IscException e)
{
this.lastError = e;
this.RollbackImplicitTransaction();
}
return this.GetErrorCode();
}
