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

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org.springframework.orm.ojb.support
Class TransactionAwareDataSourceConnectionFactory

java.lang.Object
  org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl
      org.apache.ojb.broker.accesslayer.ConnectionFactoryNotPooledImpl
          org.apache.ojb.broker.accesslayer.ConnectionFactoryManagedImpl
              org.springframework.orm.ojb.support.LocalDataSourceConnectionFactory
                  org.springframework.orm.ojb.support.TransactionAwareDataSourceConnectionFactory

All Implemented Interfaces:

org.apache.ojb.broker.accesslayer.ConnectionFactory

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public class TransactionAwareDataSourceConnectionFactory
extends LocalDataSourceConnectionFactory

Subclass of LocalDataSourceConnectionFactory that returns transaction-aware proxies for all DataSources retrieved by OJB.

Define the following entry in your OJB.properties to use this connection factory:

 ConnectionFactoryClass=org.springframework.orm.ojb.support.TransactionAwareDataSourceConnectionFactory

This connection factory allows Spring's OJB access to participate in JDBC-based transactions managed outside of OJB (for example, by Spring's DataSourceTransactionManager). This can be convenient if you need a different local transaction strategy for another O/R mapping tool, for example, but still want OJB access to join into those transactions.

A further benefit of this factory is that plain PersistenceBrokers (opened directly via the PersistenceBrokerFactory, outside of Spring's OJB support) will still participate in active Spring-managed transactions.

As a further effect, using a transaction-aware DataSource will apply remaining transaction timeouts to all created JDBC Statements. This means that all operations performed by OJB will automatically participate in Spring-managed transaction timeouts. This is even desirable for transactions managed by PersistenceBrokerTransactionManager.

Since:

1.1.4

Author:

Juergen Hoeller

See Also:

TransactionAwareDataSourceProxy, DataSourceTransactionManager, PersistenceBrokerTransactionManager

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Field Summary

 

Fields inherited from class org.springframework.orm.ojb.support.LocalDataSourceConnectionFactory
beanFactory

 

Constructor Summary
TransactionAwareDataSourceConnectionFactory()

 

Method Summary
protected  DataSource	getDataSource(String jcdAlias)           Return a TransactionAwareDataSourceProxy for the original DataSource (i.e. the Spring bean with the JCD alias name), provided that it isn't a TransactionAwareDataSourceProxy already.

 

Methods inherited from class org.springframework.orm.ojb.support.LocalDataSourceConnectionFactory
lookupConnection

 

Methods inherited from class org.apache.ojb.broker.accesslayer.ConnectionFactoryManagedImpl
newConnectionFromDriverManager

 

Methods inherited from class org.apache.ojb.broker.accesslayer.ConnectionFactoryNotPooledImpl
checkOutJdbcConnection, releaseJdbcConnection, validateConnection

 

Methods inherited from class org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl
getDbURL, getJcdDescription, getJdbcProperties, getJdbcProperties, initializeJdbcConnection, newConnectionFromDataSource, releaseAllResources, releaseConnection

 

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

 

Constructor Detail

TransactionAwareDataSourceConnectionFactory

public TransactionAwareDataSourceConnectionFactory()

Method Detail

getDataSource

protected DataSource getDataSource(String jcdAlias)

Return a TransactionAwareDataSourceProxy for the original DataSource (i.e. the Spring bean with the JCD alias name), provided that it isn't a TransactionAwareDataSourceProxy already.

Overrides:

getDataSource in class LocalDataSourceConnectionFactory

Parameters:

jcdAlias - the JCD alias to retrieve a DataSource for

Returns:

the DataSource to use

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