Notes about HiRDB.NET Data Provider

Table 15-2 gives notes about HiRDB.NET Data Provider.

Table 15-2 Notes about HiRDB.NET Data Provider

Object	Method or property	Details
HiRDBCommand	CommandTimeout property	The setting is ignored because the timeout value during execution depends on the settings in the client environment definition (PDCWAITTIME, PDSWAITTIME, PDSWATCHTIME).
	Cancel method	System.NotSupportedException is returned because there is no cancellation function.
	ExecuteReader method	When the CommandBehavior.KeyInfo, CommandBehavior.SchemaOnly, or CommandBehavior.SequentialAccess argument is specified, it is treated as CommandBehavior.Default because a function for acquiring only column or primary key information is not available.
	UpdatedRowSource property	When UpdatedRowSource.Both or UpdatedRowSource.FirstReturnedRecord is specified, HiRDBException is returned because there is no batch query function that returns rows.
HiRDBConnection	Database property	The null character always results because there is no function for acquiring database names.
	State property	ConnectionState.Connecting, ConnectionState.Executing, ConnectionState.Fetching, or ConnectionState.Broken will never result because this property is a reserved value for future product versions.
	BeginTransaction method	IsolationLevel is ignored, if specified, because this method is set for each SQL statement or acquired from HiRDB environment variables.
	ChangeDatabase method	System.NotSupportedException is returned because a function for changing the connected database is not available.
HiRDBDataReader	Depth property	Always 0 because there is no hierarchy concept.
	GetBoolean method	NotSupportedException is returned because there is no corresponding type.
	GetByte method	NotSupportedException is returned because there is no corresponding type.
	GetChar method	NotSupportedException is returned because there is no corresponding type.
	GetData method	NotSupportedException is returned because there is no corresponding type.
	GetGuid method	NotSupportedException is returned because there is no corresponding type.
	NextResult method	false is returned because there is no multiple record set function.
HiRDBParameter	DbType property	If DbType.Boolean, DbType.Currency, DbType.Guid, or DbType.VarNumeric is specified, HiRDBException is returned because there is no corresponding type.
	Direction property	If HiRDBCommand class's ExecuteNonQuery, ExecuteReader, ExecuteScalar, or Prepare method is executed while Direction.ReturnValue is specified, HiRDBException is returned because there is no function for acquiring the stored procedure's return value.
	IsNullable property	Acquisition only; setting is not available. (The null value can always be specified.)

15.6 Notes about HiRDB.NET Data Provider