Wrapper (moe.ios.core API)

All Known Subinterfaces:

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

All Known Implementing Classes:

JDBCConnection, JDBCDatabaseMetaData, JDBCPreparedStatement, JDBCResultSet, JDBCResultSetMetaData, JDBCStatement
```
public interface Wrapper
```
This class is an actual usage of the wrapper pattern for JDBC classes. Developers can get the delegate instance when the instance may be a proxy class.

Since:

1.6

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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