Is there a regex to check for empty elements for the XML below? So I want to check whether or not everything below the <ClientRequest> tags are populated or not?
<Response xmlns="http://Test/Types">
<ClientRequest>
<Name>TEST</Name>
<Id><222/Id>
<Parameters>
<SID>123456</SID>
</RequestParams>
<StartDate>2017-10-13T23:00:01.000+01:00</StartDate>
<EndDate>2017-10-14T22:59:59.000+01:00</EndDate>
<URL></URL>
</ClientRequest>
<Install/>
<Types/>
<LR/>
<Package/>
<Services/>
<Issues/>
<Complaints/>
</Response>
Use an XML parser or XPath, not regex, to check or parse XML.
This XPath,
//*[not(text()) and not(*)]
will select all elements that have no text or element children.
This XPath,
//*[not(node())]
will select all empty elements (also disallowing comment and PI children).
Note that your XML is not well-formed. Here it is with corrections:
<Response xmlns="http://Test/Types">
<ClientRequest>
<Name>TEST</Name>
<Id>222</Id>
<Parameters>
<SID>123456</SID>
</Parameters>
<StartDate>2017-10-13T23:00:01.000+01:00</StartDate>
<EndDate>2017-10-14T22:59:59.000+01:00</EndDate>
<URL></URL>
</ClientRequest>
<Install/>
<Types/>
<LR/>
<Package/>
<Services/>
<Issues/>
<Complaints/>
</Response>
Note also that you could wrap either of the above XPaths in boolean() or count() to return an indicator or count of the presence of such populated elements.
Related
I'm developing a BPEL service using JDeveloper 11.1.1.5.0.
The API's response contains some recurring fields and I'm trying to use a for-each loop to map them with the final web-service's response parameters.
The API's response structure is like this :
<Data>
<Item>
<F6181_SubsWalletCounter>-1</F6181_SubsWalletCounter>
<FBalanceExpDate>2013-08-13T00:00:00</FBalanceExpDate>
<FResetWalletCounterValue>0</FResetWalletCounterValue>
<FRecurringPeriod>0</FRecurringPeriod>
<FRecurringRefreshDate>1899-12-30T00:00:00</FRecurringRefreshDate>
<FRecurringRefreshDay>0</FRecurringRefreshDay>
<F6150_AccountProfileId>18</F6150_AccountProfileId>
<FLimit>0</FLimit>
<F8345_PaymentDebt>0</F8345_PaymentDebt>
<F9217_MinBalance>0</F9217_MinBalance>
<F9218_MaxPaymentDebt>-1</F9218_MaxPaymentDebt>
</Item>
<Item>
<F6181_SubsWalletCounter>-1</F6181_SubsWalletCounter>
<FBalanceExpDate>2013-08-13T00:00:00</FBalanceExpDate>
<FResetWalletCounterValue>0</FResetWalletCounterValue>
<FRecurringPeriod>0</FRecurringPeriod>
<FRecurringRefreshDate>1899-12-30T00:00:00</FRecurringRefreshDate>
<FRecurringRefreshDay>0</FRecurringRefreshDay>
<F6150_AccountProfileId>18</F6150_AccountProfileId>
<FLimit>0</FLimit>
<F8345_PaymentDebt>0</F8345_PaymentDebt>
<F9217_MinBalance>0</F9217_MinBalance>
<F9218_MaxPaymentDebt>-1</F9218_MaxPaymentDebt>
</Item>
</Data>
The <Item> element and its sub-elements could repeat multiple times maintaining the exact structure within itself. Out of these sub elements, few are to be mapped with the final response parameters.
The xsl code is :
<ns2:responseBody>
<ns2:balanceInfo>
<ns2:balance>
<xsl:for-each select=
"/tns:Subscriber_WalletInfo_GetResponse/Data/Item">
<ns2:wallet>
<xsl:value-of select="F6091_WalletTypeName"/>
</ns2:wallet>
</xsl:for-each>
<ns2:expirationDate>
<xsl:value-of select="FBalanceExpDate"/>
</ns2:expirationDate>
<ns2:balanceAmount>
<xsl:value-of select="F9261_Balance"/>
</ns2:balanceAmount>
<ns2:unit>
<xsl:value-of select="F8341_CurrencyName"/>
</ns2:unit>
</ns2:balance>
</ns2:balanceInfo>
<ns3:Error>
<ns3:description>
<xsl:value-of select="/tns:Subscriber_WalletInfo_GetResponse/ErrorDescription"/>
</ns3:description>
</ns3:Error>
</ns2:responseBody>
But the response doesn't get mapped with this xsl. I'm not sure if I've made any syntactical error or if any namespace is missing.
Any kind of guidance would be great!
I'm not sure if I've made any syntactical error or if any namespace is missing.
Right both times, I think.
First, the syntax errors.
If the XML introduced with the words "The xsl code is" is in fact the entire stylesheet, then your first syntactic error is that your stylesheet is not namespace-well-formed: you have not declared any of the namespace prefixs ns2, ns3, xsl.
Your second syntactic error is at the XSLT level: the namespace prefix tns is also not declared.
Your third syntactic error is that the outermost element does not include any xsl:version attribute.
When I supply dummy namespace declarations for the unbound prefixes (and http://www.w3.org/1999/XSL/Transform for the prefix xsl) and supply an xsl:version="1.0" attribute on the outermost element, then the stylesheet becomes a legal XSLT 1.0 stylesheet, using the "literal result element as stylesheet" option.
So much for the syntax errors. When I run the repaired stylesheet on the input you supply, I get output. Not the output you want, but it's progress:
<?xml version="1.0"?>
<ns2:responseBody xmlns:ns2="http://example.com/ns2"
xmlns:ns3="http://example.com/ns3"
xmlns:tns="http://example.com/tns">
<ns2:balanceInfo>
<ns2:balance>
<ns2:expirationDate/>
<ns2:balanceAmount/>
<ns2:unit/>
</ns2:balance>
</ns2:balanceInfo>
<ns3:Error>
<ns3:description/>
</ns3:Error>
</ns2:responseBody>
Now the semantic errors, which include but are not limited to a namespace error.
You're not getting any information about your input here, because the select expressions in your stylesheet (specifically /tns:Subscriber_WalletInfo_GetResponse/Data/Item and /tns:Subscriber_WalletInfo_GetResponse/ErrorDescription) aren't matching anything. Both of these path expressions say, roughly:
Start at the root of the document (that's the /).
The outermost element will be named Subscriber_WalletInfo_GetResponse, in the namespace bound to prefix tns.
Within that element, the second select expression searches for a child named ErrorDescription which is not namespace-qualified. The first expression searches for a child (or: the set of all children) named Data, and then within the Data element(s), the set of all children named Item, and evaluates the contents of the for-each instruction once for each of them. The elements Item and Data are both expected to be namespace-unqualified.
In the data you show, by contrast, the outermost element is not named Subscriber_WalletInfo_GetResponse and is not namespace-qualified. Naturally, neither select expression doesn't match anything: they both fail at step 2.
I am needing a little help with filtering my xml based on a property
I have the XML in the following format:
<?xml version="1.0" encoding="utf-8" ?>
<root id="-1">
<LandingPage id="1067" parentID="1050" level="2"
writerID="0" creatorID="0" nodeType="1066" template="1073"
sortOrder="0" createDate="2013-02-04T14:29:39"
updateDate="2013-02-07T11:08:27" nodeName="About"
urlName="about" writerName="Pete" creatorName="Pete"
path="-1,1050,1067" isDoc="">
<hideInNavigation>0</hideInNavigation>
</LandingPage>
</root>
What I need to do is filter these elements where hideInNavigation = 0
I have tried the following:
[#isDoc and #hideInNavigation ='0']
(I need the #isDoc attribute too) but realised this would only work if hideInNavigation was an attribute of the LandingPage tag so I tried
value['hideInNavigation'='0']
but this didn't seem to do anything either. After much searching for the answer, I haven't come up with anything so was wondering if it is possible
Supposing the current context was the <root> element, you could select the LandingPages with hideInNavigation = 0 with:
LandingPage[hideInNavigation = '0']
If you would share your XSLT, I van give you more specific guidance on how to amend it for this particular case.
And was the #isDoc test in your first example something you wanted? Do you want to filter LandingPages that have an isDoc attribute and a hideInNavigation value of 0?
'hideInNavigation'='0' compares the two strings 'hideInNavigation' and '0', which are guaranteed to be different.
In the context of root, LandingPage[hideInNavigation=0] would match the LandingPage element in your example.
This XPath return all LandingPage with isDoc attribute empty and hideInNavigation element content is '0'
//LandingPage[#isDoc="" and hideInNavigation='0']
I have the following problem. I want to replace a value of an element in my xquery-file by using baseX as the database. The xquery code is as follows:
let $db := doc('update.xml')
replace value of node $db//elem with 'haha'
return <result> {$db//elem/text()} </result>
The xml document contains the following elements:
<?xml version="1.0" encoding="ISO-8859-1"?>
<root xmlns:xs="http://www.w3.org/2001/XMLSchema-instance">
<check>
<ok>
<elem>test</elem>
<help></help>
</ok>
</check>
</root>
Everytime I want to execute this xquery an error like this is thrown:
Expecting 'where', 'order' or 'return' expression
so what should i do or change, to just replace the text "test" by "haha" in the element ?
If I use just this line of code it works, but I have to read out of URL-Parameter so I need more lines of code, except the "replace...." line!
let starts a flwor-expression which may not directly contain update statements. You will have to put a return between these two:
let $db := doc('update.xml')
return
replace value of node $db//elem with 'haha'
You will also be able to do arbitrary calculations, but make sure not to have any output returned by your query.
There is no way to use updating statements and return a result at the same time.
I am fairly new to XML dev.. I had a few questions regarding XML parsing with XPATH and libxml.
I have an XML structured as :
<resultset>
<result count=1>
<row>
<name> He-Man! </name>
<home> Greyskull </home>
<row>
</result>
<result count=2>
<row>
<name> Spider-Man</name>
<home> Some downtown apartment </home>
<row>
<row>
<name> Disco-Man!</name>
<home> The 70's dance floor </home>
<row>
</result>
<resultset>
I need to pick out the names from this XML , but where the count is 2 , i need it only from the first record. I ran through a few tutorials, but i am unable to come up with an XPATH query which would serve this purpose.
/name will select all name elements.
/result[#count > 1 ]/row[1]/name | /result[#count =1 ]/row/name
Is this possible to be done with XPATH ? Is this better to be done via XPATH or by walking the XML tree?
Can some one point me to some complex searches through out XML's ?
Edit : The actual scenario requires select a subset of the XML row , which are nested at 2 levels at times. This sounds like i need to OR '|' many paths to select the nodes i require... I am not sure if that would be efficient as opposed to walking a tree... The above is typed to replicate the problem :)
Thanks!
Try this XPath -
/resultset/result[#count=2]/row/name
This will give a list of all nodes falling under this XPath. From this just take the first element (as you needed only the first record).
I'd probably keep my xpath simpler and just extract both cases, then loop over both node sets.
If you do need to go down the single xpath route, you should try out your xpath expressions in something that lets you enter them live, rather than having to recompile C/C++ code. You should be able to do that by loading your XML into firefox and using firebug - for example typing $x('//name') in the firebug console gives three nodes.
NOTE however that your XML is invalid... You have a bunch of "<row>"s that should be "</row>" and the same for "<resultset>" and your counts need to be
<result count="1">
i.e. with quote marks around the value.
Using MSXML4, I am creating and saving an xml file:
MSXML2::IXMLDOMDocument2Ptr m_pXmlDoc;
//add some elements with data
SaveToDisk(static_cast<std::string>(m_pXmlDoc->xml));
I now need to acquire a substring from m_pXmlDoc->xml and save it. For example, if the full xml is:
<data>
<child1>
<A>data</A>
<One>data</One>
<B>data</B>
</child1>
</data>
I want to store this substring instead:
<A>data</A>
<One>data</One>
<B>data</B>
How do I get this substring using MXML4?
Use XPath queries. See the MSDN documentaion for querying nodes. Basically you need to call the selectNodes API with the appropriate XPath expression that matches the part of the DOM you are interested in.
// Query a node-set.
MSXML4::IXMLDOMNodeListPtr pnl = pXMLDom->selectNodes(L"//child/*");