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Get elements with no textual values in XML in elixir


In Java, how do I parse XML as a String instead of a file?XPath: How to select elements based on their value?What does <![CDATA[]]> in XML mean?How to read XML using XPath in JavaXPath - Selecting elements that equal a valueHow do you parse and process HTML/XML in PHP?XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnodeXPath query to get nth instance of an elementExtract value of attribute node via XPathXPath with LXML Element






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








1















I am trying to parse the following XML doc using SweetXML library.



<A>
<B>23</B>
<B>34</B>
<B></B>
</A>


However when I try to parse the document using: xpath(~x"/A/B/text()"l)
I get the response ['23', '34']. Is there anyway I can get the list with nil value for the element having no text ? The response that I expect is: ['23', '34', nil].










share|improve this question
























  • The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

    – Alejandro
    Apr 22 at 22:39

















1















I am trying to parse the following XML doc using SweetXML library.



<A>
<B>23</B>
<B>34</B>
<B></B>
</A>


However when I try to parse the document using: xpath(~x"/A/B/text()"l)
I get the response ['23', '34']. Is there anyway I can get the list with nil value for the element having no text ? The response that I expect is: ['23', '34', nil].










share|improve this question
























  • The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

    – Alejandro
    Apr 22 at 22:39













1












1








1


1






I am trying to parse the following XML doc using SweetXML library.



<A>
<B>23</B>
<B>34</B>
<B></B>
</A>


However when I try to parse the document using: xpath(~x"/A/B/text()"l)
I get the response ['23', '34']. Is there anyway I can get the list with nil value for the element having no text ? The response that I expect is: ['23', '34', nil].










share|improve this question
















I am trying to parse the following XML doc using SweetXML library.



<A>
<B>23</B>
<B>34</B>
<B></B>
</A>


However when I try to parse the document using: xpath(~x"/A/B/text()"l)
I get the response ['23', '34']. Is there anyway I can get the list with nil value for the element having no text ? The response that I expect is: ['23', '34', nil].







xml xpath elixir






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 23 at 22:21









Adam Millerchip

3,22811731




3,22811731










asked Mar 23 at 15:18









Mukul ChakravartyMukul Chakravarty

838




838












  • The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

    – Alejandro
    Apr 22 at 22:39

















  • The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

    – Alejandro
    Apr 22 at 22:39
















The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

– Alejandro
Apr 22 at 22:39





The proper W3C XPath 1.0 answer is NO. You select node-sets in XPath 1.0, then is not posible to select something that it doesn't exist.

– Alejandro
Apr 22 at 22:39












1 Answer
1






active

oldest

votes


















3
















I think you want to use optional mapping:



xpath(xml, ~x"//A/B"l, number: ~x"text()")
|> Enum.map(fn %number: number -> number end)


Output:



['23', '34', nil]





share|improve this answer























  • I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

    – Mukul Chakravarty
    Mar 24 at 13:04












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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









3
















I think you want to use optional mapping:



xpath(xml, ~x"//A/B"l, number: ~x"text()")
|> Enum.map(fn %number: number -> number end)


Output:



['23', '34', nil]





share|improve this answer























  • I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

    – Mukul Chakravarty
    Mar 24 at 13:04
















3
















I think you want to use optional mapping:



xpath(xml, ~x"//A/B"l, number: ~x"text()")
|> Enum.map(fn %number: number -> number end)


Output:



['23', '34', nil]





share|improve this answer























  • I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

    – Mukul Chakravarty
    Mar 24 at 13:04














3












3








3









I think you want to use optional mapping:



xpath(xml, ~x"//A/B"l, number: ~x"text()")
|> Enum.map(fn %number: number -> number end)


Output:



['23', '34', nil]





share|improve this answer















I think you want to use optional mapping:



xpath(xml, ~x"//A/B"l, number: ~x"text()")
|> Enum.map(fn %number: number -> number end)


Output:



['23', '34', nil]






share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 23 at 22:14









Adam MillerchipAdam Millerchip

3,22811731




3,22811731












  • I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

    – Mukul Chakravarty
    Mar 24 at 13:04


















  • I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

    – Mukul Chakravarty
    Mar 24 at 13:04

















I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

– Mukul Chakravarty
Mar 24 at 13:04






I was able to do it a while ago using stream_tags(xmldoc, :B) |> Stream.map( fn :B, doc -> doc |> SweetXml.xpath(~x"./text()") end) |> Enum.to_list . But I think yours is better. Thanks for the solution.

– Mukul Chakravarty
Mar 24 at 13:04




















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