Bill Schneider, Software Architect

Bill Schneider writes about software and other stuff. Opinions are my own.

Tuesday, August 30, 2011

WebSphere Portal error - "Puma requested entity type Group from VMM but received Entity"

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Got this error when trying to upgrade from WebSphere Portal 6.0 to 7.0. com.ibm.portal.puma.SchemaViolationException: EJPSG0053E: Puma req...
Friday, August 26, 2011

Javascript, getYear and cookie expiration

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Chrome and Firefox both return an offset from 1900 for date.getYear() instead of a four-digit year (pre-Y2K, a two-digit year). So new Date...
Wednesday, August 24, 2011

Javascript associative array and iteration order

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I just noticed that some browsers, like IE9 and Chrome, don't preserve insertion order of keys when iterating with a for-in loop ["...
1 comment:
Saturday, June 18, 2005

commons-logging classloader pain

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I recently learned about commons-logging's classloader behavior the hard way when moving applications that use log4j from Tomcat to WebL...
Saturday, June 04, 2005

cost of supporting old browsers

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I've begun to question the wisdom of standards for websites that require support for older browsers like Netscape 4. Backwards compatibi...
Saturday, February 05, 2005

Wireless adventure

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I must have bad luck with my home wireless network. I had a D-Link DI-514 wireless router, which worked great until I got a new IBM Thinkp...
Saturday, January 15, 2005

displaytag sorting/paging performance vs. native SQL

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displaytag is an easy-to-use JSP tag library for printing out HTML data tables with sorting and paging. But, there's a catch. In an ente...
2 comments:
Sunday, January 09, 2005

USB flash drives and Linux

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I've had to set up a USB stick with Linux recently. It's fairly easy if you know the right magic. Here are some links to useful ...
2 comments:
Saturday, January 01, 2005

Avoiding Anemic Domain Models with Hibernate

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One of Hibernate's most under-appreciated features is its ability to persist private fields. This feature is useful for avoiding what M...
7 comments:
Wednesday, December 22, 2004

more PostgreSQL performance junk

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Someone at work was running a big delete (100k rows) and it was taking forever, as if it were hung. We couldn't figure out what was goi...

PostgreSQL on cygwin: "Bad system call"

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I was getting this "Bad system call" message from PostgreSQL 7.4.x on cygwin. It was working earlier, and I thought I had done ev...
Wednesday, December 15, 2004

PostgreSQL performance of "where exists"

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Today I was looking into the performance of a PostgreSQL query with a "... where exists (select 1 from ...)" subquery: select foo...
1 comment:
Saturday, December 11, 2004

"Client CVS Branch" anti-pattern

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Scenario: Your team developed a custom application for Client A. The application is generally useful, so it gets re-sold to Client B. ...
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