jpa

JPA type casting

ygmgbg — Wed, 05 Aug 2009 10:27:03 -0400

Hello,

I am writing a jpa query which involves comparing 2 parameters code1 and code2. however, code1 is a string while code2 is an integer. i tried doing cast(code2 as string) but it's not working. I think it's because cast( something as Type) is supported in hibernate but not in jpa, so in jpa queries, how do you do type casting? Thanks so much.

Enterprise Java

2008: Year of the Java Persistence API

dmarx — Fri, 19 Dec 2008 22:14:00 -0500

It appears that one of the most popular themes in Java development in 2008 has been the Java Persistence API (JPA).

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TOTD #40: jQuery Autcomplete widget with MySQL, GlassFish, NetBeans

Arun Gupta — Wed, 06 Aug 2008 08:00:00 -0400

TOTD
#39 explained how to create an Autocomplete widget
(server-powered autocompleting of text fields, similar to Google
Suggest) using Prototype/Script.aculo.us libraries
with NetBeans, GlassFish and MySQL.

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Combining Groovy, Grails, MySQL, and the Java Persistence API

Various Authors — Thu, 31 Jul 2008 16:12:25 -0400

by Carol McDonald

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TOTD #38: Creating a MySQL Persistence Unit using NetBeans IDE

Arun Gupta — Fri, 25 Jul 2008 08:00:00 -0400

This TOTD (Tip
Of The Day) shows how to
create a Persistence Unit (PU) for a MySQL
database using NetBeans
IDE. This PU can then be used in any of Java EE artifacts (JSP,
Servlet, EJB, ...) for database interaction.

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Preventing Non-Repeatable Reads in JPA Using EclipseLink

Various Authors — Wed, 02 Jul 2008 19:46:44 -0400

by Rahul Biswas

In this tip, you'll learn how to prevent non-repeatable reads through the
Java Persistence API (JPA)
and JPA extensions provided by EclipseLink.

Non-Repeatable Reads

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The Value of Named Parameters in JPA QL

dmarx — Mon, 30 Jun 2008 10:58:00 -0400

In my article Basic Java Persistence API Best Practices, I wrote that because JPA is the result of good ideas from many previous technologies (Hibernate, JDBC, JDO, etc.), it follows that many of the best practices associated with these inspiring technologies can and should be applied to JPA.

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