I have the following xml:
<Company>
<Section>ABC</Section>
</Company>
I am conducting a negative test of sorts and want to send a NULL value to the "Section" element of the xml.
I tried the following:
* set xml /Company/Section = (null)
However, what happens is that the opening tag of the element gets deleted altogether resulting in:
<Company>
</Section>
</Company>
Expected result should be:
<Company>
<Section></Section>
</Company>
I would've liked to try .replace but the value inside "Section" is dynamic and so I cannot effectively use .replace. I also tried an empty string ('') and the same behavior happens where the opening tag gets deleted.
Please advise.
That is exactly what a null should do.
If an empty string does not work, that is a big surprise to me. Then the best option is you submit an issue and ideally contribute a PR to fix it also. Else consider what you ask for as not supported.
Related
I am creating an information displaying mini-app for a device. The response I receive from the device when I send an HTTP Get request is literally as follows:
<?xml version="1.0" encoding="iso-8859-2"?>
<root xmlns="http://www.papouch.com/xml/th2e/act">
<sns id="1" type="1" status="0" unit="0" val="25.0" w-min="" w-max="" e-min-val=" -0.3" e-max-val=" 124.0" e-min-dte="01/01/2014 13:16:44" e-max-dte="05/14/2014 10:00:43" /><sns id="2" type="2" status="0" unit="3" val="56.4" w-min="" w-max="" e-min-val=" 0.1" e-max-val=" 100.0" e-min-dte="01/27/2014 08:39:14" e-max-dte="03/04/2014 11:02:40" /><sns id="3" type="3" status="0" unit="0" val="15.7" w-min="" w-max="" e-min-val=" -21.3" e-max-val=" 85.9" e-min-dte="01/27/2014 12:21:28" e-max-dte="03/04/2014 11:29:32" /><status frm="1" location="NONAME" time="01/02/2014 7:12:00" typesens="3" /></root>
There are 3 sns elements with incrementing ids, I need to read the val attribute of the sns element with the id 1.
I tried implementing the suggested way here:Get specific XML element attributes in Labview , and shown below is my implementation, but it does not work. I tested the XPath on http://xpather.com/ and it fetches the value I need just fine.
The XPath I am using is: //root/sns[#id="1"]/#val
The result I get when I run is just nothing, no Parsing errors, no any other errors, everything seems to be okay but the String indicator is always empty, String 2 displays the HTTP response fine.
I am using (and have to use) LabVIEW 2011 SP1.
The reason why the result is empty is the wrong input of Get Node Text Content.
Hi I am new to XML manipulation, my question would be if there is a possibility of detecting if the XML node is an empty node like this: <gen:nodeName />
I am able to manipulate single nodes however I would be interested if there is an approach like a loop or recursive function that could save some time doing manual labor looking trough every single node. I have no idea how to approach this problem though.
Thanks for help.
You did not specify the dialect of SQL ([sql] is not enough, please specify always the RDBMS incl. version).
This is for SQL-Server, but the semantics should be the same.
DECLARE #xml XML=
N'<root>
<SelfClosing />
<NoContent></NoContent>
<BlankContent> </BlankContent>
<HasContent>blah</HasContent>
<HasContent>other</HasContent>
</root>';
SELECT #xml.query(N'/root/*') AS AnyBelowRoor --All elements
,#xml.query(N'/root/*[text()]') AS AnyWithTextNode --blah and other
,#xml.query(N'/root/*[not(text())]') AS NoText --no text
,#xml.query(N'/root/*[text()="blah"]') AS AnyWithTextNode--blah only
The <SelfClosing /> is semantically the same as the <NoContent><NoContent>. There is no difference.
It might be a surprise, but a blank as content is taken as empty too.
So the check for empty or not empty is the check for the existance of a text() node. one can negate this with not() to find all without a text().
Interesting: The result for NoText comes back as this (SQL-Server)
<SelfClosing />
<NoContent />
<BlankContent />
The three elements are implicitly returned in the shortest format.
Field value query is giving unexpected results when any special character(#,=,#,$,%,^,*) is passed.
please find the 4 sample docs I have inserted in to ML.
<root>
<journalTitle>Dinesh</journalTitle>
<sourceType>JA</sourceType>
<title>title1</title>
<volume>volume0</volume>
</root>
<root>
<journalTitle>Gayari</journalTitle>
<sourceType>JA</sourceType>
<title>title1</title>
<volume>volume0</volume>
</root>
<root>
<journalTitle>Dixit</journalTitle>
<sourceType>JA</sourceType>
<title>title1</title>
<volume>volume0</volume>
</root>
<root>
<journalTitle>Singla</journalTitle>
<sourceType>JA</sourceType>
<title>title1</title>
<volume>volume0</volume>
</root>
CTS Query :
cts:search(
fn:doc(),
cts:field-value-query("Sample","######*()", ("unwildcarded")),
"unfiltered"
)
On running this query I am getting all the documents.
As per my understanding, it should return an empty sequence.
please find below the field I have created.
Field (in XML format) :
<field xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://marklogic.com/xdmp/database">
<field-name>Sample</field-name>
<field-path>
<path>/root/journalTitle</path>
<weight>1.0</weight>
</field-path>
<word-lexicons/>
<included-elements/>
<excluded-elements/>
<tokenizer-overrides/>
</field>
Index setting:
If I will add any alphabet(s) in the search string it will give me the correct results.
Like:
##$%F
=====S
df===$d
Please help me to resolve this issue?
Try passing "exact" as an option to cts:field-value-query:
cts:search(
fn:doc(),
cts:field-value-query("Sample","######*()", ("exact")),
"unfiltered"
)
MarkLogic has an index for exact values to help in cases like this. Note it's only on when you have both case sensitive and diacritic sensitive indexes enabled (which you do). I know this works for cts:element-value-query so I expect it will for cts:field-value-query as well.
Use instead the 'exact' option in the field-value-query.
This requires the fast diacritic- and case-sensitive options, but you already have those enabled.
You can also try xdmp:plan before and after using 'exact' to see the effect on the query plan.
In the 'tokenizer overrides' option for your field, add these special character(#,=,#,$,%,^,*) as words (select 'word').
These special characters are not considered for matching by default. You need to override the default tokenizer to include them as words.
May I know what output are you expecting on passing this cts:element-word-query(xs:QName("journalTitle"),"=====S") for the above given for xmls.
Changing the one character searches to true in database config, resolves the issue in element-word-query.
I have a XML document which looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<Configuration>
<Data key="dailyKey">19283</Data>
</Configuration>
And in my vb.net program I want to change the value from "<Data>" by the attribute "dailyKey"
I have tried to understand myself on this but cannot figure out how to edit TAG by ATTRIBUTE
Please help, Richard
You could use XPath expressions and the SelectSingleNode method like this:
Dim node = xmlDoc.SelectSingleNode("//data[#key=""dailyKey""]")
Then you can modify the value of node as you wish to. You can find more XPath examples at MSDN.
The workflow in its entirety would be:
1. Load the XML Document for manipulation
You can use the XmlDocument class to load (and subsequently save) your XML Document like this:
Dim xmlDoc As New XmlDocument()
xmlDoc.Load("<Here goes your url // You can also feed in a stream to this method>")
2. Locate the node you want to modify
As mentioned earlier, use the SelectSingleNode function to locate the node you are trying to modify the value of. It takes an XPath expression.
Dim node = xmlDoc.SelectSingleNode("//data[#key=""dailyKey""]")
3. Modify the node
You can now edit the node (tag) in whatever way you wish. It seems you want to edit the contained value. Do it by changing the Value property of the XmlNode:
node.Value = 224062 'Random value. Change to suit your needs.
4. Save the XML Document (Obviously :P)
xmlDoc.Save()
When running a report in preview I get the following error The definition of the report is invalid , the tablix 'Tablix11' contains an invalid TablixMember. The sort Expressions element is not allowed if Group is omitted.
I have never come across this error before and cant understand what is causing it.
The error can be replicated by creating a simple Tablix and looking at the underlying XML.
When you create a Tablix with a group, the underlying RDL XML will include something like this:
<TablixRowHierarchy>
<TablixMembers>
<TablixMember />
<TablixMember>
<Group Name="Group1">
<GroupExpressions>
<GroupExpression>=Fields!val.Value</GroupExpression>
</GroupExpressions>
</Group>
<SortExpressions>
<SortExpression>
<Value>=Fields!val.Value</Value>
</SortExpression>
</SortExpressions>
<TablixMembers>
<TablixMember>
<Group Name="Details3" />
</TablixMember>
</TablixMembers>
</TablixMember>
</TablixMembers>
</TablixRowHierarchy>
If you remove the entire Group element, this will give the same error you're seeing:
If you also remove the SortExpressions element this will allow the report to render without error.
However - it's impossible for me to say how your RDL file got in this state in the first place. Given that hacking XML to get things running is seldom a good idea, my recommendation would be to start the tablix from scratch instead of hacking things to a working state - you might just be introducing more problems.
But at least hopefully now you can see why the error might be occurring.
I found that the Tablix header had a textbox property containing interactive sort. This text box is in the header, and not part of the detail. When I deleted the field from the detail of the tablix, the interactive sort remained on the textbox in the header.
Changing it on the header by right clicking on the header textbox of the tablix, then selecting textbox properties, then selecting "interactive sorting", and then correcting the "sort by" value to the correct field name did the trick.