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unwrap Method (SQLServerPreparedStatement)

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Returns an object that implements the specified interface to allow access to the Microsoft SQL Server JDBC Driver-specific methods.

Note

This feature is introduced starting with the Microsoft SQL Server JDBC Driver version 2.0.

public <T> T unwrap(Class<T> iface)

Parameters

iface

A class of type T defining an interface.

Return Value

An object that implements the specified interface.

Exceptions

SQLServerException

Remarks

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.

The SQLServerPreparedStatement class extends the SQLServerStatement class. When this method is called, the object unwraps to the following classes: SQLServerStatement and SQLServerPreparedStatement.

For example code, see unwrap Method (SQLServerCallableStatement).

See Also

Reference

isWrapperFor Method (SQLServerPreparedStatement)
SQLServerPreparedStatement Class

Concepts

SQLServerPreparedStatement Methods
SQLServerPreparedStatement Members