Comparing Two XML documents

[suman55]

Hello All,

I am writing a java program(SAX) to compare two XML documents.I am comparing it only based on "elements structure", nothing to do with DTDs or XML schemas or entities.

I am collecting the start tags and end tags of both documents, and checking whether they are equal or not, in the particular order.The order of all start tags and end tags in both documents should be same.

Will this really work, or am I missing any complexity? Are there any other issues I have to look on?

Thank You.

 

[chiph]

Have you made a buy vs. build decision already?

Because Altova sells a XML differencing utility for only a few hundred dollars. If you're spending more than a couple days on this, it's not cost-effective.

Chip H.


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[suman55]

Hi,

I want to build it myself.It is just preparation for an exam.

 

[JontyMC]

No reason why that shouldn't work. XML is only tags.

 

[flumpy]

... the same? or only structurally equivalent?

What if the tag content is different?

And why would this help anyone.. (just thinking about its usefulness). I mean, if you've been asked to do "something in xml using SAX" for the exam there's alot more interesting and useful things you can do with it than this