what is fastest XML parser ?

[raminaa niilian]

Hi
Thank you for reading my post
Wat is fastest XML parser available in Opensource ?
most of my application job is about parsing and working with XML data,
Now i want to find fastest XML parser and use it.

Thanks

[William Brogden]

If you think that the first step in tackling your XML application is finding the fastest parser, you are seriously mistaken.
Instead think about these questions:
1. Will you have to validate the XML?
2. What is the largest XML document you will have to handle?
3. Do you have to write XML from scratch?
4. Modify an existing document and re-write it?
5. Is the application "stand-alone" with a single user?
6. Move data to and from a database?
... and probably a bunch more.

Just look at some of the recent discussions in the forum to see the variety of situations XML is used in.
Bill

[raminaa niilian]

1. Will you have to validate the XML?

No i will not need to validate them as they are completely predicted XML

2. What is the largest XML document you will have to handle?

It is about 20K

3. Do you have to write XML from scratch?

Yes in ~20% of cases

4. Modify an existing document and re-write it?

yes i need sometimes to do this , about 10% of processing is in this kind

5. Is the application "stand-alone" with a single user?

No it is a J2ee Application , indeed these are some web services which will do all of this jobs which are related to XML and Database

6. Move data to and from a database?

Yes , it is a big part , i decide to use some XML databinding like JAXB 2 for this kind

Thank you for your help.

[William Brogden]

The time consumed in parsing a 20k XML file by any parser will be small compared to network and database delays. The JAXP parser classes built in to Java and used in J2EE should do a perfectly adequate job and have the advantage of using the same library that the rest of J2EE will be using.
Bill

[raminaa niilian]

Does JaxP availabe in java EE 5 differ from jaxP available in j2ee 1.4 ?


thanks

[William Brogden]

Does JaxP availabe in java EE 5 differ from jaxP available in j2ee 1.4 ?

I can't help you with that question as I have not kept up with J2EE changes.
Bill

[Peer Reynders]

Originally posted by raminaa niilian:
Does JaxP availabe in java EE 5 differ from jaxP available in j2ee 1.4?

Yes.
J2SE 1.5 includes JAXP 1.3 while J2SE 1.4 includes JAXP 1.2.
See XML Processing.
Sun�s implementation of JAXP 1.2 includes the Crimson Parser while JAXP 1.3 includes the Xerces parser. Usually Xerces is judged to be the superior one. See also Java[tm] API for XML Processing (JAXP):Frequently Asked Questions.
[ April 24, 2006: Message edited by: Peer Reynders ]