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Tag Archives: apache

Derby 10.5 “OFFSET/FETCH” and JPA

September 11, 2009 – 9:44 pm

It seems that no current JPA implementation is able to paginate the result using Apache Derby 10.5 “OFFSET/FETCH” mechanism. So javax.persistence.Query setFirstResult and setMaxResults don’t really translate into proper pagination with “OFFSET/FETCH”

TopLink/EclipseLink org.eclipse.persistence.platform.database.DerbyPlatform
Hibernate org.hibernate.dialect.DerbyDialect
OpenJPA. org.apache.openjpa.jdbc.sql.DerbyDictionary

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By ruben.laguna | Posted in java | Also tagged , , , , , , , , | Comments (1)

How to get information on UNIQUE keys on Apache Derby

October 16, 2007 – 11:04 am

It´s not easy to get information on derby keys once you created them. I was looking for a command like “SHOW CREATE TABLE <tablename>” but no luck. I realized that the answer should lay in SYS tables. After googling a while I found the following bit of wisdom:

The following query will give [...]

By ruben.laguna | Posted in java | Also tagged , , , , , | Comments (0)

Silly Apache JMeter 2.2 bug

April 25, 2007 – 6:54 am

The JDBC Sampler always commits (it doesn’t honor the auto-commit = false parameter)
http://issues.apache.org/bugzilla/show_bug.cgi?id=42018. I’ve provided a patch that solved it at Bugzilla

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By ruben.laguna | Posted in java, jmeter | Also tagged , , , , , , | Comments (2)

Source code for Statistical Visualizer plugin for Apache Jmeter 2.2

January 17, 2007 – 7:25 am

I just released the source code for the *other* Apache Jmeter plugin that I host here. Just go to the end of this page to download the file and get instructions.

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By ruben.laguna | Posted in java | Also tagged , , , , , , | Comments (4)

Source code for enhanced jdbc sampler released

January 17, 2007 – 6:55 am

I released the Enhanced JDBC Sampler for Apache JMeter 2.2 source code today. See the bottom of this page to find the downloadable zip and instructions.

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Enhanced JDBC Sampler for Apache JMeter

December 14, 2006 – 2:47 pm

I’ve moved this post to the following page.
**UPDATE**: The files here will only run in JRE 1.6. I will try to provide JRE 1.5-compatible files as soon as possible. Thanks to Daniel for pointing this out.
Some time ago I posted a bug report for Apache JMeter benchmarking utility (you can find my other jmeter [...]

By ruben.laguna | Posted in java, jmeter | Also tagged , , , , , , | Comments (0)

Better JMeter Graphs

December 12, 2006 – 7:58 pm

I’ve moved this post to the following location
**UPDATE**: The files here will only run in JRE 1.6. I will try to provide JRE 1.5-compatible files as soon as possible. Thanks to Daniel for pointing this out.
If you are tired of the old “Graph Results” listener that JMeter provides

Click on the above image or here [...]

By ruben.laguna | Posted in java | Also tagged , , , , , , , , | Comments (8)

Apache JMeter bugs

October 29, 2006 – 3:53 pm

I’ve been working with Apache JMeter 2.2 mainly for JDBC benchmarks and I found a couple of bugs.

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