IT. Expert System.

All Known Subinterfaces:

CallableStatement, Connection, DatabaseMetaData, DataSource, ParameterMetaData, PreparedStatement, ResultSet, ResultSetMetaData, RowSet, RowSetMetaData, Statement

public interface Wrapper

Since:

1.6

• Method Summary

  Methods

  Modifier and Type	Method and Description
  boolean	isWrapperFor(Class<?> iface) If the caller is a wrapper of the class or implements the given interface, the methods return false and vice versa.
  <T> T	unwrap(Class<T> iface) Returns an object that implements the given interface.

• Method Detail

  • unwrap

    <T> T unwrap(Class<T> iface)
             throws SQLException

    Returns an object that implements the given interface. If the caller is not a wrapper, a SQLException will be thrown.

    Parameters:

    iface - - the class that defines the interface

    Returns:

    - an object that implements the interface

    Throws:

    SQLException - - if there is no object implementing the specific interface

  • isWrapperFor

    boolean isWrapperFor(Class<?> iface)
                         throws SQLException

    If the caller is a wrapper of the class or implements the given interface, the methods return false and vice versa.

    Parameters:

    iface - - the class that defines the interface

    Returns:

    - true if the instance implements the interface

    Throws:

    SQLException - - when an error occurs when judges the object