How to iterate XQuery Path? - xquery

Question

<Response xmlns="https://**********/token">
<rows>
<e>
<e>1,4507</e>
<e>1</e>
<e>2017-02-28T05:10:32.0606654Z</e>
<e>2017-02-28T05:10:32.2267838Z</e>
<e>Depart</e>
<e>Depart</e>
<e>acct: xxx on 10/2/2015</e>
<e>16.666131292069704</e>
<e null="true"/>
<e>Open</e>
<e null="true"/>
<e null="true"/>
<e null="true"/>
</e>
<e>
<e>1,4507</e>
<e>2</e>
<e>2017-02-28T05:10:32.0606654Z</e>
<e>2017-02-28T05:10:32.2267838Z</e>
<e>Depart</e>
<e>Depart</e>
<e>acct: xxx on 10/2/2015</e>
<e>16.666131292069704</e>
<e null="true"/>
<e>Open</e>
<e null="true"/>
<e null="true"/>
<e null="true"/>
</e>
</rows>
<skip>0</skip>
<take>126</take>
</Response>
The above is my xml response:
I wanted to verify each row that status is Open.
Open
declare namespace ns1='https://**********/token';
<Result>
for $x in //ns1:Response[1]/ns1:rows[1]
return data($x/ns1:e[1]/ns1:e[10]/text())
</Result>
but it is not returning the value.. It just gives the following in the expected result.
<Result>for $x in //ns1:Response[1]/ns1:rows[1]
return data($x/ns1:e[1]/ns1:e[2]/text())</Result>
Is it correct xquery expression? would be helpful if some check this?

Answer 1

You should wrap your XQuery expression in {} otherwise it will be treated as string literal :
declare namespace ns1='https://**********/token';
<Result>
{
for $x in //ns1:Response[1]/ns1:rows[1]
return data($x/ns1:e[1]/ns1:e[10]/text())
}
</Result>
demo
output :
<Result>Open</Result>
It isn't clear what is the expected output exactly though, since you've been using exact index on every path step which will cause the expression to match only one element at a time...

Answer 2

If you just want to know that every row has e[10] = "Open" then you can do:
<Result>{empty(/ns1:Rows/*/*[10][.!="Open"])}</Result>
(Your question title talks of iterating. That's procedural thinking. In XQuery, just like in SQL, you generally operate on sets of items directly: you don't need to iterate over them to process them one at a time.)