Difference between revisions of "EclipseLink/Examples/JPA/GraphLoading"

Revision as of 11:03, 15 June 2010

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-<div style="border:1px solid #999999;background-color:#ffffff;align:center">
+##REDIRECT[[EclipseLink/Examples/JPA/QueryOptimization]]
-<table border="0" cellpadding="5" align="center"><tr><td width="20">[[image:Catnicon.gif]]</td><td>This page is under construction.</td></tr></table>
-</div>
-= How to Optimize Object Graph Loading with JPA =
-A common problem developers face when using object-relational solutions is how to optimize the loading of a graph or related objects. By default a query for the root object type and default navigation through the graph can result in a N+1 SQL performance problem. This how-to highlights EclipseLink JPA's available solutions.
-== Example Model ==
-== Querying without Optimizations ==
-== JPQL JOIN FETCH ==
-== EclipseLink Hints ==
-EclipseLink provides additional support for joining and batch reading using query hints.
-=== JOIN FETCH Hint ===
-=== BATCH Hint ===