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POMVC With Lazy Loading
 

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    <p><em>Correct me if this is an exact duplicate, I know this topic is discussed often but can't find a definitive answer.</em></p> <p><strong>The question:</strong> </p> <p>What is the best practical solution to handling Hibernate objects in a MVC webapp?</p> <p><strong>The details:</strong> </p> <p>I am using Hibernate and want to leverage lazy loading where possible.<br> I am working in a MVC style webapp.<br> I hate getting lazy load initialization exceptions.<br> I hate having to reattach Hibernate objects between transactions.</p> <p><strong>The options:</strong></p> <ol> <li>Eager load everything <ul> <li>Solves the lazy initialization problem but makes my queries bigger</li> </ul></li> <li>Use some 'Open Session in View' concept <ul> <li>I love the simplicity of it</li> <li>Objects still need to be reattached, and in an AJAXy setup, quite frequently</li> <li>A session is opened for EVERY request</li> </ul></li> <li>'touch' items I need before leaving the transaction <ul> <li>Seems flimsy at best.. and tedious</li> </ul></li> <li>Create different, simplified, 'detached' objects so the view never sees real Hibernate objects <ul> <li>These could be simpler than full Hibernate objects so it's not like a full eager load of the model</li> <li>I've heard this recommended in places to but just seems like more liability/code/work</li> </ul></li> <li>Open a session when ever I want to interact with Hibernate objects. <ul> <li>This can be wrapped up in a Spring Service layer pretty nicely, but seems excessive at times. Eg: I want <code>hibernateObject.getRelatedObjects()</code> but need to say something like <code>springService.getRelatedObjects(hibernateObject)</code></li> </ul></li> </ol> <p>Am I missing something?<br> Have I over-thought things?<br> Have I under-thought things? </p> <p><strong>PS:</strong> </p> <p>For a web framework I'm using ZK but <em>don't</em> really want a ZK specific answer.<br> I'm also using Spring and am cool with a Spring specific answer as it's so ubiquitous.</p>
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