Connecting the {Dots}

Java Annotatons   has been widely accepted by enterprise application developers. It really free up developers from writing down tons of boilerplate code which is used for business service invocation or basic infrastructural set up like initializing the service context or getting handle to some core runtime services etc. This blog post is mainly intended to take you through the possibilities of using annotation while building enterprise solutions. There are definite advantages if you use this tool judiciously. Few highlights are: Reduces the boilerplate code in your business tier. Adds dynamism to your code. Greater control on the implementation part, as the logic is abstracted  from the developers. High Extensibility etc... JSF managed bean and custom ADF flavored annotations A closer look at the source code of a typical web application may reveal fair amount of boilerplate code that spread across managed beans on the client tier. This repetitive piece of code ma...

I recently encountered an interesting use case where ADF Faces is used for the view layer and the data(model) is persisted in LDAP Store. Now the requirement is to identify the modified records/attributes and perform the update only on these records. There may be different ways to achieve this, say for example using container like Spring with AOP. But, is there any other smart approach without adding extra layer to my application's technology stack? Answer is 'Yes'. Let us explore one possible approach for this use case scenario. ELResolver The solution is based on customized ELResolver. We know that backing beans are bound to the view(jsf pages) using Expression Language(EL). ELResolver actually resolves thesa 'binding expressions' at runtime. So idea is to intercept in the invocation of setters for the backing beans through a customized ELResolver. And add the logic to track the modified attributes at this point. JSF specification enables to add customized javax.e...