通过XPath从嵌套的子值中获取XML元素

Question

I have an XML file that looks something like this:

<PACKAGES>
    <PACKAGE>
        <SHORT-NAME>Element1</SHORT-NAME>
        <PACKAGES>
            <PACKAGE>
                <SHORT-NAME>Element2</SHORT-NAME>
                <ELEMENTS>
                    <MODULE>
                        <SHORT-NAME>Element3</SHORT-NAME>
                        <DESC>
                        </DESC>
                        <CATEGORY>Item</CATEGORY>
                    </MODULE>
                </ELEMENTS>
            </PACKAGE>
        </PACKAGES>
    </PACKAGE>
</PACKAGES>

I would like the ability to build an XPath query to the MODULE element with the SHORT-NAME of "Element3", based on the SHORT-NAMES of "Element3"'s parents...so something like this:

//SHORT-NAME='Element1'.//SHORT-NAME='Element2'.//SHORT-NAME='Element3'

I've tried the above query, but it doesn't seem to work, not a valid query. I've also tried this:

//*[text()='Element1']//*[text()='Element2'] etc...

but again, this doesn't seem to be a valid query.

I'd like this to be scale-able such that the specific query could be any path, but the path is always based on the text value of SHORT-NAME.

So something like:

/Element1/SubElement2/SubSubElement3/SubSubSubElement4 

could also be queried for.

An important note: For the above query, I ONLY want Element3 IF it is a child of Element2, who is a child of Element1. IF Element3 exists elsewhere in the document, I do NOT want that node.

I'm hoping this is possible I'm just not building the right query, but I'm at a loss for how to even search for this topic to try to find the answer.

EDIT: The answer provided below by Andersson almost 100% works for my use-case. The issue is highlighted below:

If I still need to query /Element1/Element2/Element3 but my XML looks like below:

<PACKAGES>
    <PACKAGE>
        <SHORT-NAME>Element1</SHORT-NAME>
        <PACKAGES>
            <PACKAGE>
                <SHORT-NAME>Element2</SHORT-NAME>
                <ELEMENTS>
                    <PACKAGE>
                    <SHORT-NAME>RandomElement</SHORT-NAME>
                        <MODULE>
                            <SHORT-NAME>Element3</SHORT-NAME>
                            <DESC>
                            </DESC>
                            <CATEGORY>Item</CATEGORY>
                        </MODULE>
                    </PACKAGE>
                </ELEMENTS>
            </PACKAGE>
        </PACKAGES>
    </PACKAGE>
</PACKAGES>

Element3 is still returned, however Element3's parent is not Element2. This makes thing more complicated and I suspect I will need to create a function that systematically goes through a search for the next child SHORT-NAME and to check if the for query is satisfied. Unless the XPath query could be modified in such a way to satisfy the above use-case.

Answer 1

This XPath,

//*[SHORT-NAME='Element3']

will select all elements, regardless of their names, which have a SHORT-NAME child with a string value of Element3 .

If you wish to specify the target element's heritage, extend the pattern upward as many levels as necessary:

//*[SHORT-NAME='Element1']//*[SHORT-NAME='Element2']//*[SHORT-NAME='Element3']