Overview

This projects aims at merging content from various XML files, based on XPath queries.

Status

Work in progress!

Usage scenario

Suppose we want to add a new book to the following "book store":

File bookstore.xml

<?xml version="1.0"?>
<bookstore>

	<book category="Adventures">
	  <title lang="en">Treasure Island</title>
	  <author>Robert Louis Stevenson</author>
	  <year>2006</year>
	  <price>0.00</price>
	</book>
	
	<book category="Children">
	  <title lang="en">Harry Potter</title>
	  <author>J K. Rowling</author>
	  <year>2005</year>
	  <price>29.99</price>
	</book>
	
	<book category="Children">
	  <title lang="en">Alice's Adventures in Wonderland</title>
	  <author>Lewis Carroll</author>
	  <year>1997</year>
	  <price>0.99</price>
	</book>
	
</bookstore>

File newbook.xml

<?xml version="1.0"?>
<bookstore>

	<book category="Drama">
	  <title lang="en">Pride and Prejudice</title>
	  <author>Jane Austen</author>
	  <year>1998</year>
	  <price>9.95</price>
	</book>

</bookstore>


XmlMerge 
	-s[ource] newbook.xml -m "bookstore/book" 
	-t[arget] bookstore.xml -n "bookstore/book[last()]" 
	-o[utput] books_updated.xml

File books_updated.xml

<?xml version="1.0"?>
<bookstore>

	<book category="Adventures">
	  <title lang="en">Treasure Island</title>
	  <author>Robert Louis Stevenson</author>
	  <year>2006</year>
	  <price>0.00</price>
	</book>
	
	<book category="Children">
	  <title lang="en">Harry Potter</title>
	  <author>J K. Rowling</author>
	  <year>2005</year>
	  <price>29.99</price>
	</book>
	
	<book category="Children">
	  <title lang="en">Alice's Adventures in Wonderland</title>
	  <author>Lewis Carroll</author>
	  <year>1997</year>
	  <price>0.99</price>
	</book>
	
	<book category="Drama">
	  <title lang="en">Pride and Prejudice</title>
	  <author>Jane Austen</author>
	  <year>1998</year>
	  <price>9.95</price>
	</book>
	
</bookstore>