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## org.springframework.jdbc.support.nativejdbc
Class Jdbc4NativeJdbcExtractor

    java.lang.Object
      org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter
          org.springframework.jdbc.support.nativejdbc.Jdbc4NativeJdbcExtractor

All Implemented Interfaces:
  NativeJdbcExtractor

    public class Jdbc4NativeJdbcExtractor

extends NativeJdbcExtractorAdapter

`NativeJdbcExtractor` implementation that delegates to JDBC 4.0's `unwrap` method, as defined by `Wrapper`.

Note: Only use this when actually running against a JDBC 4.0 driver, with a connection pool that supports the JDBC 4.0 API (i.e. at least accepts JDBC 4.0 API calls and passes them through to the underlying driver)!

Since:
  2.5
Author:
  Juergen Hoeller
See Also:
  `Wrapper.unwrap(java.lang.Class)`, `SimpleNativeJdbcExtractor`, `JdbcTemplate.setNativeJdbcExtractor(org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractor)`, `OracleLobHandler.setNativeJdbcExtractor(org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractor)`

Constructor Summary
`Jdbc4NativeJdbcExtractor()`

Method Summary
`protected Connection` | `doGetNativeConnection(Connection con)` Not able to unwrap: return passed-in Connection.
`CallableStatement` | `getNativeCallableStatement(CallableStatement cs)` Not able to unwrap: return passed-in CallableStatement.
`PreparedStatement` | `getNativePreparedStatement(PreparedStatement ps)` Not able to unwrap: return passed-in PreparedStatement.
`ResultSet` | `getNativeResultSet(ResultSet rs)` Not able to unwrap: return passed-in ResultSet.
`Statement` | `getNativeStatement(Statement stmt)` Not able to unwrap: return passed-in Statement.

Methods inherited from class org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter
`getNativeConnection, getNativeConnectionFromStatement, isNativeConnectionNecessaryForNativeCallableStatements, isNativeConnectionNecessaryForNativePreparedStatements, isNativeConnectionNecessaryForNativeStatements`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Jdbc4NativeJdbcExtractor

    public Jdbc4NativeJdbcExtractor()

Method Detail

### doGetNativeConnection

    protected Connection doGetNativeConnection(Connection con)
                                        throws SQLException

  Description copied from class: `NativeJdbcExtractorAdapter`
  Not able to unwrap: return passed-in Connection.

  Overrides:
    `doGetNativeConnection` in class `NativeJdbcExtractorAdapter`
  Throws:
    `SQLException`

### getNativeStatement

    public Statement getNativeStatement(Statement stmt)
                                 throws SQLException

  Description copied from class: `NativeJdbcExtractorAdapter`
  Not able to unwrap: return passed-in Statement.

  Specified by:
    `getNativeStatement` in interface `NativeJdbcExtractor`
  Overrides:
    `getNativeStatement` in class `NativeJdbcExtractorAdapter`
  Parameters:
    `stmt` - the Statement handle, potentially wrapped by a connection pool
  Returns:
    the underlying native JDBC Statement, if possible; else, the original Statement
  Throws:
    `SQLException` - if thrown by JDBC methods

### getNativePreparedStatement

    public PreparedStatement getNativePreparedStatement(PreparedStatement ps)
                                                 throws SQLException

  Description copied from class: `NativeJdbcExtractorAdapter`
  Not able to unwrap: return passed-in PreparedStatement.

  Specified by:
    `getNativePreparedStatement` in interface `NativeJdbcExtractor`
  Overrides:
    `getNativePreparedStatement` in class `NativeJdbcExtractorAdapter`
  Parameters:
    `ps` - the PreparedStatement handle, potentially wrapped by a connection pool
  Returns:
    the underlying native JDBC PreparedStatement, if possible; else, the original PreparedStatement
  Throws:
    `SQLException` - if thrown by JDBC methods

### getNativeCallableStatement

    public CallableStatement getNativeCallableStatement(CallableStatement cs)
                                                 throws SQLException

  Description copied from class: `NativeJdbcExtractorAdapter`
  Not able to unwrap: return passed-in CallableStatement.

  Specified by:
    `getNativeCallableStatement` in interface `NativeJdbcExtractor`
  Overrides:
    `getNativeCallableStatement` in class `NativeJdbcExtractorAdapter`
  Parameters:
    `cs` - the CallableStatement handle, potentially wrapped by a connection pool
  Returns:
    the underlying native JDBC CallableStatement, if possible; else, the original CallableStatement
  Throws:
    `SQLException` - if thrown by JDBC methods

### getNativeResultSet

    public ResultSet getNativeResultSet(ResultSet rs)
                                 throws SQLException

  Description copied from class: `NativeJdbcExtractorAdapter`
  Not able to unwrap: return passed-in ResultSet.

  Specified by:
    `getNativeResultSet` in interface `NativeJdbcExtractor`
  Overrides:
    `getNativeResultSet` in class `NativeJdbcExtractorAdapter`
  Parameters:
    `rs` - the ResultSet handle, potentially wrapped by a connection pool
  Returns:
    the underlying native JDBC ResultSet, if possible; else, the original ResultSet
  Throws:
    `SQLException` - if thrown by JDBC methods

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