unwrap Method (SQLServerStatement)
Returns an object that implements the specified interface to allow access to the Microsoft SQL Server JDBC Driver-specific methods.
Hinweis
This feature is introduced starting with the Microsoft SQL Server JDBC Driver version 2.0.
public <T> T unwrap(Class<T> iface)
Parameter
iface
A class of type T defining an interface.
Rückgabewert
An object that implements the specified interface.
Ausnahmen
Hinweise
The unwrap method is defined by the java.sql.Wrapper interface, which is introduced in the JDBC 4.0 Spec.
Applications might need to access extensions to the JDBC API that are specific to the Microsoft SQL Server JDBC Driver. The unwrap method supports unwrapping to public classes that this object extends, if the classes expose vendor extensions.
When this method is called, the object unwraps to the SQLServerStatement class.
For example code, see Beispiel zum Aktualisieren umfangreicher Daten, or unwrap Method (SQLServerCallableStatement).
Siehe auch
Referenz
isWrapperFor Method (SQLServerStatement)
SQLServerStatement Class