将多个文件合并为单个XML文件的最佳方法？

Question

I have a collection of files that I'd like to be able to combine into a single XML, according to a specific schema.

I'm thinking about something like using XSLT with a custom XmlResolver (C# / .NET), although I'm not sure if that would give me enough control over how the XPath expressions in the XSLT are parsed to be able to direct certain expressions to certain files.

The files to be combined will be XML fragments. In general, the entire fragment will be incorporated into the XML destination, though it would be nice to have the option of just incorporating certain fields.

Example:

Starting with three fragment files:

one.txt: contains <One>Number One</One> [or maybe just "Number One"]
two.txt: contains <Two>Number Two</Two> [or "Number Two"]
three.txt: contains <Three>Number Three</Three> [or "Number Three"]

I want to combine one.txt and two.txt into the following, while ignoring three.txt:

<Numbers>
  <One>Number One</One>
  <Two>Number Two</Two>
</Numbers>

I'm looking for a descriptive approach, not custom code, since there can be many different fragments and many different combinations.

I know the code below won't work, but something like this:

<Numbers>
    <xsl:value-of select="mine:one.txt/One" />
    <xsl:value-of select="mine:two.txt/Two" />
</Numbers>

The XML fragments can be complex, so a simple file-merge isn't enough. I will probably want some form of XPath / XQuery to extract the relevant pieces.

Any ideas?

Answer 1

What's wrong with

<Numbers>
    <xsl:copy-of select="doc('mine:one.txt')/One" />
    <xsl:copy-of select="doc('mine:two.txt')/Two" />
</Numbers>

I don't think you've explained why you think you might need a custom XmlResolver, but if you do, then it's no problem