TransactionAwareDataSourceConnectionProvider (Spring Framework) - Spring Framework 1.2.9 API 文档英文版

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org.springframework.orm.hibernate3
Class TransactionAwareDataSourceConnectionProvider

java.lang.Object
  org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider
      org.springframework.orm.hibernate3.TransactionAwareDataSourceConnectionProvider

All Implemented Interfaces:: ConnectionProvider

public class TransactionAwareDataSourceConnectionProvider
extends LocalDataSourceConnectionProvider
extends LocalDataSourceConnectionProvider

Subclass of LocalDataSourceConnectionProvider that returns a transaction-aware proxy for the exposed DataSource. Used if LocalSessionFactoryBean's "useTransactionAwareDataSource" flag is on.

Since:: 1.2
Author:: Juergen Hoeller
See Also:: LocalSessionFactoryBean.setUseTransactionAwareDataSource(boolean)

Constructor Summary

TransactionAwareDataSourceConnectionProvider()


Method Summary

protected DataSource getDataSourceToUse(DataSource originalDataSource)
          Return a TransactionAwareDataSourceProxy for the given DataSource, provided that it isn't a TransactionAwareDataSourceProxy already.

boolean supportsAggressiveRelease()
          This implementation returns true: We can guarantee to receive the same Connection within a transaction, as we are exposing a TransactionAwareDataSourceProxy.

Methods inherited from class org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider

close, closeConnection, configure, getConnection, getDataSource

Methods inherited from class java.lang.Object

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

Constructor Summary
`TransactionAwareDataSourceConnectionProvider()`

Method Summary
`protected DataSource`	`getDataSourceToUse(DataSource originalDataSource)` Return a TransactionAwareDataSourceProxy for the given DataSource, provided that it isn't a TransactionAwareDataSourceProxy already.
`boolean`	`supportsAggressiveRelease()` This implementation returns `true`: We can guarantee to receive the same Connection within a transaction, as we are exposing a TransactionAwareDataSourceProxy.

Methods inherited from class org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider
`close, closeConnection, configure, getConnection, getDataSource`

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

Constructor Detail

TransactionAwareDataSourceConnectionProvider

public TransactionAwareDataSourceConnectionProvider()

Method Detail

getDataSourceToUse

protected DataSource getDataSourceToUse(DataSource originalDataSource)

Return a TransactionAwareDataSourceProxy for the given DataSource, provided that it isn't a TransactionAwareDataSourceProxy already.

Overrides:: getDataSourceToUse in class LocalDataSourceConnectionProvider

Parameters:: originalDataSource - the DataSource as configured by the user on LocalSessionFactoryBean
Returns:: the DataSource to actually retrieve Connections from (potentially wrapped)
See Also:: LocalSessionFactoryBean.setDataSource(javax.sql.DataSource)

supportsAggressiveRelease

public boolean supportsAggressiveRelease()

This implementation returns true: We can guarantee to receive the same Connection within a transaction, as we are exposing a TransactionAwareDataSourceProxy.

Specified by:: supportsAggressiveRelease in interface ConnectionProvider
Overrides:: supportsAggressiveRelease in class LocalDataSourceConnectionProvider