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Tuesday, May 15, 2012

JPQL vs SQL, why not have both

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One of the most common questions I see on JPA, is users wanting to know how to write some specific SQL query as a JPQL query. Some of the t...
13 comments:
Monday, April 23, 2012

Objects vs Data, and Filtering a JOIN FETCH

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JPA deals with objects, and SQL deals with rows. Some developers love JPA because it allows them to use objects in an object-oriented fashi...
1 comment:
Monday, April 2, 2012

EclipseLink JPA supports MongoDB

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EclipseLink 2.4 will support JPA access to NoSQL databases. This support is already part of the EclipseLink development trunk and can be tri...
4 comments:
Thursday, March 29, 2012

NoSQL

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In the beginning data was free and wild. It was not confined to rows and columns and not bounded to standardization. Data access was unrul...
4 comments:
Thursday, June 9, 2011

How to improve JPA performance by 1,825%

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The Java Persistence API (JPA) provides a rich persistence architecture. JPA hides much of the low level dull-drum of database access, free...
35 comments:
Wednesday, May 4, 2011

Data Partitioning - Scaling the Database

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In Enterprise Java most of the effort is normally done to scale the mid-tier application and its server.  Pretty much every Java application...
7 comments:
Monday, March 7, 2011

JVM Performance - Part III - Concurrent Maps

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Concurent Maps The main difference between Hashtable and HashMap is that Hashtable is synchronized. For this reason Hashtable is still used ...
7 comments: