I'm developing in C#, and am processing xml from an external soap call.
I have loaded the xml response into an XElement.
Given the following xml stub
<record>
<node>
<a>My title</a>
<name>title_en</name>
</node>
<node>
<a>...</a>
<name>contact_name</name>
</node>
.....
</record>
Using xpath in C#: I'm trying to do the follow when using the method XPathSelectElement.
where
\record\node\name == 'title_en' select \record\node\a
If there is a better method to use or another suggestion on how to preform the query, I'm open to ideas.
Thanks in advance.
You need a predicate to constrain which node elements you need:
/record/node[name = 'title_en']/a
You read this expression as "find the record element, find all its child elements named node that have a name child with value "title_en", and for each of those find all a children"
Use this:
var title = doc.Descendants("node")
.Where(x => (string)x.Element("name") == "title_en")
.Select(x => (string)x.Element("a"))
.FirstOrDefault();
Related
How does XPath deal with XML namespaces?
If I use
/IntuitResponse/QueryResponse/Bill/Id
to parse the XML document below I get 0 nodes back.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<IntuitResponse xmlns="http://schema.intuit.com/finance/v3"
time="2016-10-14T10:48:39.109-07:00">
<QueryResponse startPosition="1" maxResults="79" totalCount="79">
<Bill domain="QBO" sparse="false">
<Id>=1</Id>
</Bill>
</QueryResponse>
</IntuitResponse>
However, I'm not specifying the namespace in the XPath (i.e. http://schema.intuit.com/finance/v3 is not a prefix of each token of the path). How can XPath know which Id I want if I don't tell it explicitly? I suppose in this case (since there is only one namespace) XPath could get away with ignoring the xmlns entirely. But if there are multiple namespaces, things could get ugly.
XPath 1.0/2.0
Defining namespaces in XPath (recommended)
XPath itself doesn't have a way to bind a namespace prefix with a namespace. Such facilities are provided by the hosting library.
It is recommended that you use those facilities and define namespace prefixes that can then be used to qualify XML element and attribute names as necessary.
Here are some of the various mechanisms which XPath hosts provide for specifying namespace prefix bindings to namespace URIs.
(OP's original XPath, /IntuitResponse/QueryResponse/Bill/Id, has been elided to /IntuitResponse/QueryResponse.)
C#:
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("i", "http://schema.intuit.com/finance/v3");
XmlNodeList nodes = el.SelectNodes(#"/i:IntuitResponse/i:QueryResponse", nsmgr);
Google Docs:
Unfortunately, IMPORTXML() does not provide a namespace prefix binding mechanism. See next section, Defeating namespaces in XPath, for how to use local-name() as a work-around.
Java (SAX):
NamespaceSupport support = new NamespaceSupport();
support.pushContext();
support.declarePrefix("i", "http://schema.intuit.com/finance/v3");
Java (XPath):
xpath.setNamespaceContext(new NamespaceContext() {
public String getNamespaceURI(String prefix) {
switch (prefix) {
case "i": return "http://schema.intuit.com/finance/v3";
// ...
}
});
Remember to call
DocumentBuilderFactory.setNamespaceAware(true).
See also:
Java XPath: Queries with default namespace xmlns
JavaScript:
See Implementing a User Defined Namespace Resolver:
function nsResolver(prefix) {
var ns = {
'i' : 'http://schema.intuit.com/finance/v3'
};
return ns[prefix] || null;
}
document.evaluate( '/i:IntuitResponse/i:QueryResponse',
document, nsResolver, XPathResult.ANY_TYPE,
null );
Note that if the default namespace has an associated namespace prefix defined, using the nsResolver() returned by Document.createNSResolver() can obviate the need for a customer nsResolver().
Perl (LibXML):
my $xc = XML::LibXML::XPathContext->new($doc);
$xc->registerNs('i', 'http://schema.intuit.com/finance/v3');
my #nodes = $xc->findnodes('/i:IntuitResponse/i:QueryResponse');
Python (lxml):
from lxml import etree
f = StringIO('<IntuitResponse>...</IntuitResponse>')
doc = etree.parse(f)
r = doc.xpath('/i:IntuitResponse/i:QueryResponse',
namespaces={'i':'http://schema.intuit.com/finance/v3'})
Python (ElementTree):
namespaces = {'i': 'http://schema.intuit.com/finance/v3'}
root.findall('/i:IntuitResponse/i:QueryResponse', namespaces)
Python (Scrapy):
response.selector.register_namespace('i', 'http://schema.intuit.com/finance/v3')
response.xpath('/i:IntuitResponse/i:QueryResponse').getall()
PhP:
Adapted from #Tomalak's answer using DOMDocument:
$result = new DOMDocument();
$result->loadXML($xml);
$xpath = new DOMXpath($result);
$xpath->registerNamespace("i", "http://schema.intuit.com/finance/v3");
$result = $xpath->query("/i:IntuitResponse/i:QueryResponse");
See also #IMSoP's canonical Q/A on PHP SimpleXML namespaces.
Ruby (Nokogiri):
puts doc.xpath('/i:IntuitResponse/i:QueryResponse',
'i' => "http://schema.intuit.com/finance/v3")
Note that Nokogiri supports removal of namespaces,
doc.remove_namespaces!
but see the below warnings discouraging the defeating of XML namespaces.
VBA:
xmlNS = "xmlns:i='http://schema.intuit.com/finance/v3'"
doc.setProperty "SelectionNamespaces", xmlNS
Set queryResponseElement =doc.SelectSingleNode("/i:IntuitResponse/i:QueryResponse")
VB.NET:
xmlDoc = New XmlDocument()
xmlDoc.Load("file.xml")
nsmgr = New XmlNamespaceManager(New XmlNameTable())
nsmgr.AddNamespace("i", "http://schema.intuit.com/finance/v3");
nodes = xmlDoc.DocumentElement.SelectNodes("/i:IntuitResponse/i:QueryResponse",
nsmgr)
SoapUI (doc):
declare namespace i='http://schema.intuit.com/finance/v3';
/i:IntuitResponse/i:QueryResponse
xmlstarlet:
-N i="http://schema.intuit.com/finance/v3"
XSLT:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:i="http://schema.intuit.com/finance/v3">
...
Once you've declared a namespace prefix, your XPath can be written to use it:
/i:IntuitResponse/i:QueryResponse
Defeating namespaces in XPath (not recommended)
An alternative is to write predicates that test against local-name():
/*[local-name()='IntuitResponse']/*[local-name()='QueryResponse']
Or, in XPath 2.0:
/*:IntuitResponse/*:QueryResponse
Skirting namespaces in this manner works but is not recommended because it
Under-specifies the full element/attribute name.
Fails to differentiate between element/attribute names in different
namespaces (the very purpose of namespaces). Note that this concern could be addressed by adding an additional predicate to check the namespace URI explicitly:
/*[ namespace-uri()='http://schema.intuit.com/finance/v3'
and local-name()='IntuitResponse']
/*[ namespace-uri()='http://schema.intuit.com/finance/v3'
and local-name()='QueryResponse']
Thanks to Daniel Haley for the namespace-uri() note.
Is excessively verbose.
XPath 3.0/3.1
Libraries and tools that support modern XPath 3.0/3.1 allow the specification of a namespace URI directly in an XPath expression:
/Q{http://schema.intuit.com/finance/v3}IntuitResponse/Q{http://schema.intuit.com/finance/v3}QueryResponse
While Q{http://schema.intuit.com/finance/v3} is much more verbose than using an XML namespace prefix, it has the advantage of being independent of the namespace prefix binding mechanism of the hosting library. The Q{} notation is known as Clark Notation after its originator, James Clark. The W3C XPath 3.1 EBNF grammar calls it a BracedURILiteral.
Thanks to Michael Kay for the suggestion to cover XPath 3.0/3.1's BracedURILiteral.
I use /*[name()='...'] in a google sheet to fetch some counts from Wikidata. I have a table like this
thes WD prop links items
NOM P7749 3925 3789
AAT P1014 21157 20224
and the formulas in cols links and items are
=IMPORTXML("https://query.wikidata.org/sparql?query=SELECT(COUNT(*)as?c){?item wdt:"&$B14&"[]}","//*[name()='literal']")
=IMPORTXML("https://query.wikidata.org/sparql?query=SELECT(COUNT(distinct?item)as?c){?item wdt:"&$B14&"[]}","//*[name()='literal']")
respectively. The SPARQL query happens not to have any spaces...
I saw name() used instead of local-name() in Xml Namespace breaking my xpath!, and for some reason //*:literal doesn't work.
I have a requirement that, Need to create JournalArticle with Structure and Template.While creating JournalArticle the method expecting the StructureId and TemplateId but these are generated by Liferay.So by name how can i get Id's of both.
Create and execute a DynamicQuery, like so (just replace Template with Structure to get structures):
DynamicQuery q = DynamicQueryFactoryUtil.forClass(DDMTemplate.class)
.add(PropertyFactoryUtil.forName("name").like("%YOUR NAME%"));
List<DDMTemplate> templates = DDMTemplateLocalServiceUtil.dynamicQuery(q);
You have to use like since the names of the structures/templates are saved like so:
<?xml version='1.0' encoding='UTF-8'?>
<root available-locales="de_DE" default-locale="de_DE">
<Name language-id="de_DE">YOUR NAME</Name>
</root>
There can be different names for different locales.
You can get StructureId (called DDMStructure) with this code
long classNameIdJournalArticle = ClassNameLocalServiceUtil.getClassNameId(JournalArticle.class);
DDMStructure ddmStructure = DDMStructureLocalServiceUtil.getStructure(groupId, classNameIdJournalArticle, "myDDMStructureName");
And TemplateId (called DDMTemplate) with this code
DDMTemplate ddmTemplate = DDMTemplateLocalServiceUtil.getTemplate(groupId, classNameIdDDMStructure, "ddmTemplateName");
I am new to Groovy Scripting. I am trying to access the value of a Response node
below is the script
def groovyUtils = new com.eviware.soapui.support.GroovyUtils(context);
def responseHolder = groovyUtils.getXmlHolder( testRunner.testCase.testSteps["request"].testRequest.response.responseContent );
responseHolder.namespaces["ns0"]="http://xmlns.int.com/orders/xsd/v1"
String mySection = responseHolder.getNodeValue["//ns0:MT_OrderCreateDTCFulfillmentResponse/ns0:StatusCode"] ;
log.info mySection
mySection is printed as []
Response XML:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header xmlns:v1="http://xmlns.int.com/orders/xsd/v1"/>
<soapenv:Body xmlns:v1="http://xmlns.int.com/orders/xsd/v1">
<ns0:MT_OrderCreateDTCFulfillmentResponse xmlns:ns0="http://xmlns.int.com/orders/xsd/v1">
<StatusCode>000</StatusCode>
<ReferenceDocNbr>NA</ReferenceDocNbr>
<SchemaValidationStatus>Validated</SchemaValidationStatus>
<StatusTimestamp>2015-08-03T18:58:01.602</StatusTimestamp>
<FaultDetails>Request for customer order number NA received successfully and format validated.</FaultDetails>
</ns0:MT_OrderCreateDTCFulfillmentResponse>
</soapenv:Body>
</soapenv:Envelope>
SOAP UI Project Structure - I am running Test_Script. Suggest me what i am missing
You've to use:
responseHolder.getNodeValue("//ns0:MT_OrderCreateDTCFulfillmentResponse/StatusCode");
instead of responseHolder.getNodeValue["//ns0:MT_OrderCreateDTCFulfillmentResponse/ns0:StatusCode"];
Note that I change responseHolder.getNodeValue invocation to use () instead of [], and also change your xpath since in your response <StatusCode> it's not defined in xmlns:ns0="http://xmlns.int.com/orders/xsd/v1".
Another option is to use the * wildcard as a namespace to map anyone. So in this case you can use:
responseHolder.getNodeValue("//*:MT_OrderCreateDTCFulfillmentResponse/*:StatusCode");
Additionally, note that probably you XML is wrong, since I suppose that all sub elements of <MT_OrderCreateDTCFulfillmentResponse> must belongs to "http://xmlns.int.com/orders/xsd/v1" namespace... so you've to declare it as:
<ns0:MT_OrderCreateDTCFulfillmentResponse xmlns:ns0="http://xmlns.int.com/orders/xsd/v1">
<ns0:StatusCode>000</ns0:StatusCode>
<ns0:ReferenceDocNbr>NA</ns0:ReferenceDocNbr>
<ns0:SchemaValidationStatus>Validated</ns0:SchemaValidationStatus>
<ns0:StatusTimestamp>2015-08-03T18:58:01.602</ns0:StatusTimestamp>
<ns0:FaultDetails>Request for customer order number NA received successfully and format validated.</ns0:FaultDetails>
</ns0:MT_OrderCreateDTCFulfillmentResponse>
Or using as default for this tag:
<MT_OrderCreateDTCFulfillmentResponse xmlns="http://xmlns.int.com/orders/xsd/v1">
<StatusCode>000</StatusCode>
<ReferenceDocNbr>NA</ReferenceDocNbr>
<SchemaValidationStatus>Validated</SchemaValidationStatus>
<StatusTimestamp>2015-08-03T18:58:01.602</StatusTimestamp>
<FaultDetails>Request for customer order number NA received successfully and format validated.</FaultDetails>
</MT_OrderCreateDTCFulfillmentResponse>
Note that if you change you XML with my indication your first XPath it's correct since now StatusCode belongs to your namespace.
Hope it helps,
I'm currently studying Berkeley XML DB and got an assignment to write Python script using it. The problem I'm currently facing is to select specific node of container. For example we have container with such information
<root>
<lab>
<name>Lab1</name>
<state>Completed</state>
</lab>
<lab>
<name>Lab3</name>
<state>Not completed</state>
</lab>
</root>
How to select <lab> element with specific <name>? In SQL I'd use WHERE Name='Lab1'. Is there any way to do something like that in XML BDB?
I think you better get old document, copy data, remove document and add new with modified data.
mgr = XmlManager()
uc = mgr.createUpdateContext()
container = mgr.openContainer("labs.dbxml") # Here must be your database name
qc = mgr.createQueryContext()
document = container.getDocument("Lab11")
name = document.getName()
content = document.getContent()
# Change fields here using XPath
container.deleteDocument('La1 1', uc)
container.putDocument(name, content, uc)
I need to parse an XLIFF file using C#, but I'm having some trouble. These files are fairly complex, containing a huge amount of nodes.
Basically, all I need to do is read the source node from each trans-unit node, do some processing on it, and insert the processed text into the corresponding target node (which will always be present, but empty).
An example of one of the nodes I need to parse would be (the whole file may contain 100s of these):
<trans-unit id="0000000002" datatype="text" restype="string">
<source>Windows Update is not installed</source>
<target/>
<iws:segment-metadata tm_score="0.00" ws_word_count="6" max_segment_length="0">
<iws:status target_content="placeholders_only"/>
</iws:segment-metadata>
<iws:boundary-seg sequence="bs20721"/>
<iws:markup-seg sequence="0000000001">
</trans-unit>
The trans-unit nodes can be buried deep in the files, the header section contains a lot of data. I'd like to use LINQ to XML to read the data, but I'm not having any luck getting it to work. Here's my current code (just trying to read and output the source nodes from the file:
XDocument doc = XDocument.Load(path);
Console.WriteLine("Before loop");
foreach (var transUnitNode in doc.Descendants("trans-unit"))
{
Console.WriteLine("In loop");
XElement sourceNode = transUnitNode.Element("source");
XElement targetNode = transUnitNode.Element("target");
Console.WriteLine("Source: " + sourceNode.Value);
}
I never see 'In loop' and I don't know why, can someone tell me what I'm doing wrong here, or suggest a better way to achieve what I'm trying to do here?
Thanks.
Try
XNamespace df = doc.Root.Name.Namespace;
foreach (XElement transUnitNode in doc.Descendants(df + "trans-unit"))
{
XElement sourceNode = transUnitNode.Element(df + "source");
// and so one, use the df namespace object to qualify any elements names
}
See also http://msdn.microsoft.com/en-us/library/bb387093.aspx.