Need help on Beginning HL7

hI Can anyone please guide me to Crea开发者_JS百科ting HL7 Version 3 messages for the first time. I need to understand the design of XML based HL7v 3 message. I want to design an interface engine in Java. Have tried to find.. but cannot see anything for beginners. Please help

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HL-7 documentation has to be purchased from hl7.org. They control copyright and so legal free copies aren't available AFAIK.

If you feel thrifty and are willing to work out some of the information yourself, the HAPI project might be a good place to start. If you look at the code you can see how some of the different segments are represented.

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There's a tool I've been using lately that helped me on that. It's called HL7 Soup which is a HL7 Viewer.

It's advantage over other products I used is it's easier to understand messages and its structure, which helped me learning lots about HL7.