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Wednesday January 28, 2004

Using the entity includes in xml

Ant supports an import tag for including another xml file as Lance explained, which is very nice.

But with cruisecontrol I have no other option than using the entity includes method, which is not very bad in this case.

For example I am running multiple projects in the continuous integration build and my cruisecontrol config xml file looks like the following

<?xml version="1.0"?>
<!DOCTYPE cruisecontrol [ 
 
        <!ENTITY project1 SYSTEM "file:./prj1.xml"> 
        <!ENTITY project2 SYSTEM "file:./prj2.xml"> 
        <!ENTITY project3 SYSTEM "file:./prj3.xml"> 
        <!ENTITY project4 SYSTEM "file:./prj4.xml"> 
 

]> 
 
<cruisecontrol> 
 
   &project1; 
 
   &project2; 
 
   &project3; 
 
   &project4; 
 
</cruisecontrol>

This looks simple when compared to having configurations of all the projects in one xml file.

This is not a clean way, but it is useful.

Sunday January 04, 2004

Virtual Keyboard "The VKB attaches to handhelds and projects the image of a full-size keyboard onto the surface of the desk where the handheld is placed, allowing the user to input text without a physical keyboard"... iBiz releasing virtual keyboard soon


I hope there will be a virtual Monitor soon :) , then all we need is a small handheld which can serve as a cellphone, PDA, TV, DVD player, laptop, dektop,.... Posted by nithy ( Jan 04 2004, 03:12:58 PM CST ) Permalink Comments [12694]

Monday December 22, 2003

Xerces DOM implementation is not thread safe for read only Couple of months back I wrote a test driver, which was using a single instance of DOM document and the test was reading some values and processing some other application logic. It was working fine until I ran the test in multiple threads. I started getting some unexpected errors from DOM objects. I used Xerces as DOM implementation.

Then I started reading the DOM spec. I found that there is no requirement for the DOM implementation to be thread safe(even for read-only purpose).

Usually everyone assumes that if we do read operations then it is thread safe as long as we do not do any write operation. But it is not true, it totally depends on what the read operation does.

Most of the time we use windows and the multi thread tests also pass, coz the chances of creating a race condition with a single processor machine is very less. I have noticed that the multi thread tests I ran on my laptop(single processor) with windows xp succeeds most of the time and they fail on IBM AIX(4 processors) most of the time.

Posted by nithy ( Dec 22 2003, 07:57:39 AM CST ) Permalink Comments [12129]

Sunday December 07, 2003

FIRST POST! This is my first post Posted by nithy ( Dec 07 2003, 08:41:30 PM CST ) Permalink Comments [5138]