Thursday, February 20, 2014

JDev/ADF sample - ADF BC Performance - View Object Instance Lazy Activation

  • ADF BC Performance - View Object Instance Lazy Activation. ADF BC is a great framework to manage data, but one thing it does really smart - ADF BC View Object instance lazy activation. You must know by now - passivation/activation events in ADF BC are relatively expensive in terms of performance. Especially expensive is activation event, as during this event View Object instance is re-constructed and data is re-fetched. However, it is not as bad as it sounds - it doesn't activate all View Object instances from Application Module together. Only View Object instances referenced from current Page Definition are activated. This means, if user was working with 10 screens, before passivation event happened - during activation event, only View Object instances from current screen will be activated. View Object instances from other screens will be activated, when actual screen will be accessed. Good news - you don't need to tune anything for this, this is how it works by default.
    Download -

No comments: