What VAST#version value should be used when combining s from different VAST responses, with different VAST versions?
Say there are 2 VAST responses:
Response 1 has VAST#version 4.0.
<VAST ... version="4.0>"
<Ad ... id="1">
</Ad>
</VAST>
Response 2 has VAST#version 3.0.
<VAST ... version="3.0>"
<Ad ... id="2">
</Ad>
</VAST>
Each response contains an element. If the elements are going to be combined in a separate element, what should that VAST element's version value be?
<VAST ... version=?>
<Ad ... id="1">
</Ad>
<Ad ... id="2">
</Ad>
</VAST>
The element is required for VAST 4.0 onwards, but not for VAST 3.0.
Related
I'm trying to write a xpath query to pull data from an xml document. Unfortunately the document has a xml fragment embedded in it that seems to have lost its encoding (< has become < > has become > etc).
An example of the xml doc is:
<OrderData xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Id>1</Id>
<RawData><?xml version="1.0" encoding="UTF-16"?>
<Data xmlns="nnn-mmm-com">
<Order Action="Remove" >
<Instrument InstID="1"></Order><
/Data>
</RawData>
</OrderData>
I'm trying to extract the following values:
Id
Action
InstID
Getting the Id is no problem, but drilling into the fragment inside RawData is proving beyond me. Any pointers gratefully received
(I'm planning to execute the xpath query in Hive using Hive-XML-SerDe which is xpath 1.0)
Thanks
With XPath 3.1 you can parse the embedded XML document and turn it into a node tree, which you can then process using path expressions. So:
/OrderData/RawData/parse-xml(.)/*:Data/*:Instrument/#InstID
should get what you want.
You didn't say what version of XPath your library supports, which usually means that it only supports 1.0, so you may need to find a different library.
first post ever, have done lots of searching but cannot find an answer specific enough or more importantly, relevant enough. Note that I am a business analyst, not a developer, so I may be missing some understanding here.
We produce XML that we then process to produce a report. Where data can be represented by a table, the XML contains details for the table title (ELEMENT_HEADING), table header row (PROMPTS), then repeating nodes representing the rows (DATA) and columns (VALUES).
The problem I am facing is I need to sort the DATA node based on a text value of the node where the node has a specific attribute value.
In the sample XML provided below, I need to sort the DATA node based on the VALUE text value for the attribute #pic='TRORGPCNT' in ascending order i.e the DATA node with TRORGPCNT of 10 should appear before the DATA node with 90. Then when the report is produced the table rows are in ascending percentage order.
I hope have explained myself clearly enough :)
Any tips on how I might accomplish this?
Sample XML:
<PROPOSAL_ELEMENT multi="Y" pec="TEACHRESP" elem_mandatory="N" elem_visible="Y">
<ELEMENT_HEADING pec="TEACHRESP">Teaching Responsibility</ELEMENT_HEADING>
<PROMPTS>
<PROMPT pic="TRORGUN" item_mandatory="Y" item_visible="Y">Faculty or School with teaching responsibility</PROMPT>
<PROMPT pic="TRORGPCNT" item_mandatory="Y" item_visible="Y">Teaching responsibility %</PROMPT>
</PROMPTS>
<DATA elem_mandatory="N" elem_visible="Y" delete_ind="N">
<VALUES>
<VALUE pic="TRORGUN" item_mandatory="Y" item_visible="Y" item_description="FACULTY OF NURSING AND HEALTH" display_in_summary_tab="Y" summary_order="">FACULTY OF NURSING AND HEALTH</VALUE>
<VALUE pic="TRORGPCNT" item_mandatory="Y" item_visible="Y" item_description="" display_in_summary_tab="Y" summary_order="">90</VALUE>
</VALUES>
</DATA>
<DATA elem_mandatory="N" elem_visible="Y" delete_ind="N">
<VALUES>
<VALUE pic="TRORGUN" item_mandatory="Y" item_visible="Y" item_description="FACULTY OF ARTS" display_in_summary_tab="Y" summary_order="">FACULTY OF ARTS</VALUE>
<VALUE pic="TRORGPCNT" item_mandatory="Y" item_visible="Y" item_description="" display_in_summary_tab="Y" summary_order="">10</VALUE>
</VALUES>
</DATA>
Sorting in XSLT is accomplished using the xsl:sort instruction, which must appear as the first child of the for-each or apply-templates that selects the nodes you want to sort. If you're selecting the set of DATA element nodes then an appropriate sorting instruction would be
<xsl:sort select="VALUES/VALUE[#pic='TRORGPCNT']"
data-type="number" />
I have the following XML:
<ArrayOfStationStatus xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autopagerMatchedRules="1">
<StationStatus ID="20" StatusDetails="To the platform due to planned maintenance work.">
<Station ID="20" Name="Bermondsey"/>
<Status ID="NS" CssClass="Closed" Description="No Step Free Access" IsActive="true">
<StatusType ID="2" Description="Station"/>
</Status>
</StationStatus>
</ArrayOfStationStatus>
And would like to select StationStatus nodes that contain a particular phrase in the Name attribute. It's important that I select SationStatus nodes.
This is the xpath I have come up with but it's not correct:
/ArrayOfStationStatus/StationStatus[contains(lower-case(child::Station/#Name),lower-case('phrase'))]
EDIT::::::::
I just solved it! This is the code I needed:
/ArrayOfStationStatus/StationStatus[child::Station[contains(lower-case(attribute::Name),lower-case("Ac"))]]
Well I managed to solve it people! Here is the solution, in this case I'm looking for the phrase 'Ac' as you can see
/ArrayOfStationStatus/StationStatus[child::Station[contains(lower-case(attribute::Name),lower-case("Ac"))]]
Also remember
lower-case(
is only available in xpath 2.0 (Dimitre Novatchev)
I can't navigate the XML doc programmatically and I need an one-line XPath solution for reasons I describe at the end.
I am working with an XML schema that looks something like the one below. (This is something I have to use as-is.)
<Root>
<!-- Child 1 -->
<Child>
<Name>Joe</Name>
<Age>12</Age>
</Child>
<!-- Child 2 -->
<Child>
<Name>Mike</Name>
<Age>25</Age>
</Child>
<!-- Child 3 -->
<Child>
<Name>Jane</Name>
<Age>20</Age>
</Child>
</Root>
Assuming I'm already at the "Joe" node (i.e. the Name element inside Child 1), I need to define an XPath query that will "wrap" that node as follows:
<Root>
<!-- Child 1 -->
<Child>
<Name>Joe</Name>
<Age>12</Age>
</Child>
</Root>
I've tried various combinations of ancestor, string-join, concat, etc., but can't seem to find the solution that "wraps" the element correctly. (The way I was using ancestor was returning all Child nodes, for example, which is not what I need.)
Some other considerations:
The solution has to be a one-line XPath query, if that's possible (for reasons given below).
It has to be generic enough to work for any Child element (i.e., it can't assume that I'm always at the first or second or third child, for example).
From the example above, you can see that I don't actually need the actual Root node per-se, just its tag (i.e. I don't want all Child nodes under it). However, I do need the actual Child node (so that I get the Name and Age).
NOTE: For what it's worth, I can't actually navigate the XML programmatically. I am using a library (whose code I cannot change) in which I have to define everything in terms of one-line XPath queries within a configuration file. It will essentially navigate through all of the Name elements, so my solution has to work from that point.
XPath is a query language.
This, among other things means that the evaluation of an XPath expression never modifies the XML document.
So, the answer is: Modifying an XML document or creating a new document cannot be done using only XPath.
Such transformations are very easy and natural to specify with XSLT.
Can I find one XML node with the most children with XPath?
<xml>
<node id="1">
<child />
<node>
<node id="2">
<child /><child />
<node>
<node id="3">
<child /><child />
<node>
<node id="4">
<child /><child /><child />
<node>
<node id="5">
<child /><child /><child />
<node>
</xml>
I would like to select either node 4 or node 5 with a single, pure XPath 1.0 expression.
I know this is pretty old, but if it helps anyone out, I wanted to do this and I think this works, at least it does for me:
/xml/node[count(./child) > count(following-sibling::node/child) and count(./child) > count(preceding-sibling::node/child)]
I'm not great with Xpath so maybe I'm missing something.
I think that it is impossible because to count children you need function count() which has one parameter - node-set and returns count of elements in this set. So you have no option how to count more node-sets than one to get max value.
Note: I am talking about XPath 1.0
I also don't think this is possible (based on the fact that I haven't been able to do it :)). Of course, if you're allowed to change the xml (even just temporarily during this processing), you could update it to put the child count as an attribute on the node (or as the node value itself), after which it's easy:
/xml/node[not(../node/#childCount > ./#childCount)]
or
/xml/node[not(../node > .)]
But you probably already know that.
The other thing I thought might work was to do some clever maths along pigeon-hole principle lines, to take as inputs the total child count and the number of nodes, and produce a minimum child count that the max-node must have, and then doing
/xml/node[child[position()=formula_for_magic_number_goes_here]]
but I soon realised that I couldn't come up with such a formula that would correctly deal with all cases - for example, if there were 10 nodes with child counts of 10, 99 1, 1, (and the rest 1s too), no amount of manipulation of the numbers 27 and 10 is going to produce a cut off point that includes 10 but excludes 9.