Re: [Springframework-developer] Significance of 'readonly'?

[<jue...@we...>]

It's essentially just a hint. Transaction managers will try to apply it =
wherever they can: For example, a transactional JDBC Connection will =
receive a corresponding setReadOnly(true) call, and a transactional =
Hibernate Session will be turned to FLUSH_NEVER. While the former is =
neglected by most JDBC drivers, the latter avoids unnecessary dirty =
checking of all objects loaded by the current Session.

Juergen


-----Original Message-----
From: spr...@li...
[mailto:spr...@li...]On Behalf
Of James Cook
Sent: Tuesday, August 03, 2004 3:25 PM
To: spr...@li...
Subject: [Springframework-developer] Significance of 'readonly'?


When using the following bean definition:

<bean id=3D"petStore" class=3D
"org.springframework.transaction.interceptor.TransactionProxyFactoryBean"=
>
  <property name=3D"transactionManager">
    <ref bean=3D"transactionManager"/>
  </property>
  <property name=3D"target">
    <ref bean=3D"petStoreTarget"/>
  </property>
  <property name=3D"transactionAttributes">
    <props>
      <prop =
key=3D"insert*">PROPAGATION_REQUIRED,-MyCheckedException</prop>
      <prop key=3D"update*">PROPAGATION_REQUIRED</prop>
      <prop key=3D"*">PROPAGATION_REQUIRED,readOnly</prop>
    </props>
  </property>
</bean>

What is the significance of the readOnly attribute in the property list? =
Is
this just a "hint" passed to certain transaction managers that may be =
able
to optimize these methods, or does it result in a specific, repeatable
behavior?





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