C3P0NativeJdbcExtractor (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.jdbc.support.nativejdbc
Class C3P0NativeJdbcExtractor

java.lang.Object
  org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter
      org.springframework.jdbc.support.nativejdbc.C3P0NativeJdbcExtractor

All Implemented Interfaces:: NativeJdbcExtractor

public class C3P0NativeJdbcExtractor
extends NativeJdbcExtractorAdapter
extends NativeJdbcExtractorAdapter

Implementation of the NativeJdbcExtractor interface for the C3P0 connection pool.

Returns underlying native Connections to application code instead of C3P0's wrapper implementations; unwraps the Connection for native Statements. The returned JDBC classes can then safely be cast, e.g. to oracle.jdbc.OracleConnection.

This NativeJdbcExtractor can be set just to allow working with a C3P0 DataSource: If a given object is not a C3P0 wrapper, it will be returned as-is.

Note that this class requires C3P0 0.8.5 or later; for earlier C3P0 versions, use SimpleNativeJdbcExtractor (which won't work for C3P0 0.8.5 or later).

Since:: 1.1.5
Author:: Juergen Hoeller
See Also:: C3P0ProxyConnection.rawConnectionOperation(java.lang.reflect.Method, java.lang.Object, java.lang.Object[]), SimpleNativeJdbcExtractor

Constructor Summary

C3P0NativeJdbcExtractor()


Method Summary

protected Connection doGetNativeConnection(Connection con)
          Retrieve the Connection via C3P0's rawConnectionOperation API, using the getRawConnection as callback to get access to the raw Connection (which is otherwise not directly supported by C3P0).

static Connection getRawConnection(Connection con)
          This method is not meant to be used directly; it rather serves as callback method for C3P0's "rawConnectionOperation" API.

boolean isNativeConnectionNecessaryForNativeCallableStatements()
          Return false by default.

boolean isNativeConnectionNecessaryForNativePreparedStatements()
          Return false by default.

boolean isNativeConnectionNecessaryForNativeStatements()
          Return false by default.

Methods inherited from class org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter

getNativeCallableStatement, getNativeConnection, getNativeConnectionFromStatement, getNativePreparedStatement, getNativeResultSet, getNativeStatement

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Summary
`C3P0NativeJdbcExtractor()`

Method Summary
`protected Connection`	`doGetNativeConnection(Connection con)` Retrieve the Connection via C3P0's `rawConnectionOperation` API, using the `getRawConnection` as callback to get access to the raw Connection (which is otherwise not directly supported by C3P0).
`static Connection`	`getRawConnection(Connection con)` This method is not meant to be used directly; it rather serves as callback method for C3P0's "rawConnectionOperation" API.
`boolean`	`isNativeConnectionNecessaryForNativeCallableStatements()` Return `false` by default.
`boolean`	`isNativeConnectionNecessaryForNativePreparedStatements()` Return `false` by default.
`boolean`	`isNativeConnectionNecessaryForNativeStatements()` Return `false` by default.

Methods inherited from class org.springframework.jdbc.support.nativejdbc.NativeJdbcExtractorAdapter
`getNativeCallableStatement, getNativeConnection, getNativeConnectionFromStatement, getNativePreparedStatement, getNativeResultSet, getNativeStatement`

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

Constructor Detail