I want to find the <issue> where id = 6. How do I do it? I tried the following, but it didn't work:
<issues>
<issue>
<id>7</id>
<project id="1" name="testProject"/>
<author id="1" name="testAuthor"/>
<subject>subject</subject>
<start_date>2015-08-24</start_date>
</issue>
<issue>
<id>6</id>
<project id="2" name="testProject2"/>
<author id="2" name="testAuthor2"/>
<subject>subject2</subject>
<start_date>2015-08-24</start_date>
</issue>
</issues>
My XPath expression attempts are:
doc.xpath("//id[contains(text(), '6']")
and
doc.xpath("//issue[#id=6]")
You can simply use the following XPath expression to get the issue element having a child element where id equals 6:
//issue[id=6]
id is a child element, not an attribute so you don't use #id for this task.
Related
I am trying to capture a value using XPath based on value of a different field.
Example XML:
<?xml version="1.0" encoding="UTF-8" ?>
<employees>
<employee>
<id>1</id>
<firstName>Tom</firstName>
<lastName>Cruise</lastName>
<photo>https://jsonformatter.org/img/tom-cruise.jpg</photo>
</employee>
<employee>
<id>2</id>
<firstName>Maria</firstName>
<lastName>Sharapova</lastName>
<photo>https://jsonformatter.org/img/Maria-Sharapova.jpg</photo>
</employee>
<employee>
<id>3</id>
<firstName>Robert</firstName>
<lastName>Downey Jr.</lastName>
<photo>https://jsonformatter.org/img/Robert-Downey-Jr.jpg</photo>
</employee>
</employees>
I am trying to get Xpath expression for value in the firstName field, when id value is 3.
You can locate parent node based on the known child node and then find the desired child node of that parent, as following:
//employee[./id='3']/firstName
the expression above will give the desired firstName node itself.
To retrieve it's text value this can be used:
//employee[./id='3']/firstName/text()
I am trying to compare customer account values to display only different values and ignore duplicate in XPath:
XML code:
<info>
<Customer CustAccount="1"/>
<Customer CustAccount="2"/>
<Customer CustAccount="2"/>
<Customer CustAccount="3"/>
</info>
The result should compare customer 1/2/3 and display:
customer 1
customer 2
customer 3
You can achieve this with the XPath-2.0 expression
for $c in distinct-values(/info/Customer/#CustAccount) return concat('customer ',$c,'
')
Output is:
customer 1
customer 2
customer 3
If you do not like the newlines, remove the
from the expression.
There is no pure XPath-1.0 expression achieving this; you could only do this with XSLT-1.0 if XPath-2.0 is unavailable.
Here is the pure xpath 1.0 solution.
Sample xml:
<root >
<info>
<Customer CustAccount="1"/>
<Customer CustAccount="2"/>
<Customer CustAccount="2"/>
<Customer CustAccount="3"/>
</info>
</root>
xpath 1.0:
/root/info/Customer[not(./#CustAccount=preceding::Customer/#CustAccount)]
Evidence:
Assume the following XML:
<data>
<node id="1" />
<node id="2" />
<node id="12" />
<node id="16" />
</data>
This xpath expression should be valid:
count(//node)
.. and should produce the number 4
I'm new to robot frameworks. Is it possible to use this xpath in robot framework?
for example something like:
${value}= Get something something source=${xml} xpath=count(//node)
The one below works but I would like the xpath to produce the end value, not a list.
#{nodelist}= Get Elements ${xml} xpath=node
Length Should Be ${nodelist} 4
Edit
I know that I can count the nodes in a list of nodes. However, I would like to get the absolute value (integer or string) using xpath. Now I need to write different code depending on if the xpath result is a node, list or attribute when the xpath could theoretically produce the final value.
You can use the Get Element Count Keyword it returns the number of elements matching the locator
You can do something as simple as this
${count} = Get Element Count name:div_name
Should Be True ${count} > 2
For more info on Keywords Have a look at this Keyword Page
When working with XML it is generally best to use the XML library. In the below example you'll find a solution for counting the elements using the XML library Get Element Count.
data.xml
<data>
<node id="1" />
<node id="2" />
<node id="12" />
<node id="16" />
</data>
Testcase.robot
*** Settings ***
Library XML
Library OperatingSystem
*** Test Cases ***
TC
${xml} Get File ./data.xml
${count} Get Element Count ${xml} xpath=node
Should Be Equal As Integers ${count} ${4}
<Item id="item0">
<Links>
<FirstLink id="link1" target="one"/>
<SecondLink id="link2" target="two"/>
</Links>
<Data>
<String>content</String>
</Data>
</Item>
<Item id="item1">
<Links>
<FirstLink id="link1" target="two"/>
<SecondLink id="link2" target="two"/>
</Links>
<Data>
<String>content</String>
</Data>
</Item>
I have created a Nokogiri-NodeSet with this structure, i.e. a list of items with links and data children.
How can I filter any items that don't match a certain value in the 'target'-attribute of <FirstLink>?
Actually, what I want in the end is to extract the <Data><String>-Content of every <Item> that matches a certain value in it's <FirstLink> "Target"-Attribute.
I've tried several approaches already but I'm at a loss as to how to identify an element by an attribute of it's grandchild, then extracting the content of this grandchild's parent's sibling, X(.
We can build up an XPath expression to do this. Assuming we are starting from the whole XML document, rather than the node-set you already have, something like
//Item
will select all <Item> elements (I’m guessing you already have something like that to get this node-set).
Next, to select only those <Item> elements which have <Links><FirstLink> where FirstLink has a target attribute value of one:
//Item[Links/FirstLink[#target='one']]
and finally to select the Data/String children of those nodes:
//Item[Links/FirstLink[#target='one']]/Data/String
So with Nokogiri you could use something like this (where doc is your parsed document):
doc.xpath("//Item[Links/FirstLink[#target='one']]/Data/String")
or if you want to use the node-set you already have you can use a relative expression:
nodeset.xpath("self::Item[Links/FirstLink[#target='one']]/Data/String")
I completely didn't understand what your goal is. But using a guess, I am trying to show you, how to proceed in this case :
require 'nokogiri'
doc = Nokogiri::XML <<-xml
<Item id="item0">
<Links>
<FirstLink id="link1" target="one"/>
<SecondLink id="link2" target="two"/>
</Links>
<Data>
<String>content1</String>
</Data>
</Item>
<Item id="item1">
<Links>
<FirstLink id="link1" target="two"/>
<SecondLink id="link2" target="two"/>
</Links>
<Data>
<String>content2</String>
</Data>
</Item>
xml
#xpath method with the expression "//Item", will select all the Item nodes. Then those Item nodes will be passed to the #reject method to select only those nodes, that has a node called Links having the target attribute value is "one". If any of the links, either FirstLink or SecondLink has the target attribute value "one", for that nodes grandparent node Item will be selected.
node.at("//Links/FirstLink")['target'] will give you the string say "one" which is a value of target attribute of the node, FirstLink of first Item nodes , then "two" from the second Item node. The part ['any vaue'] in node.at("//Links/FirstLink")['target']['any vaue'] is a call to the String#[] method.
Remember below approach will give you the flexibility of the use regular expression too.
nodeset = doc.xpath("//Item").reject do |node|
node.at("//Links/FirstLink")['target']['any vaue']
end
Now nodeset contains only the required Item nodes. Now I use #map, passing each item node inside it to collect the content of the String node. Then #at method with an expression //Data/String, will select the String node. Then #text, will give you the content of each String node.
nodeset.map { |n| n.at('//Data/String').text } # => ["content1"]
How to write a Xpath for two attributes? e.g. i need to get a value of discount > 20% and also the same discount is greater than amount 200(without any link to base value)
You can combine constraints in predicates. E.g.:
from lxml import etree
doc = etree.XML("""<xml>
<items>
<item discount_perc="25" discount_value="250">Something</item>
</items>
</xml>
""")
doc.xpath('items/item[#discount_perc > 20 and #discount_value > 200]')
Will try to answer by a simple example. Imagine you have the following xml:
<?xml version="1.0"?>
<data>
<node value="10" weight="1">foo</node>
<node value="10" weight="2">bar</node>
</data>
Then use this query to select the first <node>'s text:
//node[#value="10" and #weight="1"]/text()
and this for the second:
//node[#value="10" and #weight="2"]/text()
Hope this helps.