Maven Vs Ivy

I have been using maven in my projects for over 3 years, when i heard about Ivy dependency manager. Am curious to know how it differs from the maven and ant tools.

There are lot of blog entries debating the maven vs ivy.

Maven and Ivy are not exactly similar tools. Maven does lot of project management tooling with dependency management for artifacts. Ivy where as provide only dependency management, of course fine grained than maven. With Ivy we can chose what are the transitive dependency artifacts for an artifact.

I go with Maven and ANT for any specific customization.

The following link discusses more about Ivy and maven dependency management - http://www.objectcommando.com/blog/?p=12

SOAP Faults Vs Error codes

We were working on implementation of a web services layer (business services - SOAP ), this layer in turn will communicate with multiple web services which solves the same problem (e.g search).
While integrating multiple web services(SOAP, two options to communicate errors occur during the integration

1) SOAP Faults
- SOAP faults are used by some frameworks to represent business logic related error messages. This works as long as we do not have multiple SOAP services involved in a action.

2) Custom data structure / XML
- Define a XML response format for the web services API layer and return the respective the error code and error message defined.

We decided to use custom xml response structures to communicate any error occurred during processing /integration and let the SOAPFault communicates any actual soap faults.

CVS - CVSNT - SVN Migration

We are working with CVSNT and decided to use SVN.

Migration from CVSNT to SVN or CVS is not possible.
From CVS to SVN, tool is available at http://cvs2svn.tigris.org/.

The converters from other repositories to SVN is listed at http://subversion.tigris.org/links.html#converters

Parsing large XML document - STAX

We came across a scenario where the size of the XML content to be parsed/transformed varied between 1 MB to 10MB. We need to compute data from the available XML, which requires traversing the whole XML document. Till then we used XSLT, where transformation is given more importance and less importance to computing derived data from the XML.

I tried different options before settling down with STAX.

Santiago Pericas-Geertsen's discusses about DOM Vs JAXB in this blog.
http://weblogs.java.net/blog/spericas/archive/2005/12/dom_vs_jaxb_per.html

The following document discusses about DOM, SAX, STAX and compares different STAX implementation
http://java.sun.com/performance/reference/whitepapers/StAX-1_0.pdf

Developing voice application

Just a link to our article at Designing an Interactive Voice Response System Using VoiceXML and CCXML

Java Collections API Design Faqs

http://java.sun.com/j2se/1.5.0/docs/guide/collections/designfaq.html