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Suppress from a list of XMLElements those with a specific pattern

B B
Posted 12 years ago

Hello,

I have a list of XMLElements. I would like to suppress those which have a name different from a specific name for example "YO". Here an example :

XMLtest = {XMLElement["YO", {}, 2],XMLElement["BA", {}, 2]}

Here my code

TRI = DeleteCases[XMLtest, XMLElement[_, _, _] /; XMLElement[_, _, _]<>XMLElement["YO", _, _], Infinity]

Consequently, i would like to obtain a list with only the XMLElement which has the name "YO".

I'm sorry if my question is quiet simple. I have started using mathematica not a long time ago.

Thanks a lot for your help.
POSTED BY: B B
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B B
B B
Posted 12 years ago

I simply my last question. Thank you in advance for your help

My question was : May you help me to modify this code in order I can add several conditions on the XMLElements that I want to keep in my XMLObjects. ? I need to keep now too types of XMLElements : XMLELements called "YO" and XMLElements called "TI".

POSTED BY: B B
B B
B B
Posted 12 years ago

Thank you for your help and code proposal. The way you handle the nested XMLElements is perfect for me because it suppresses the unnecessary levels that I had before. As i wanted in this example only kept the XMLElements called "YO", I added the function "Except" and it works good.

XMLtest = Block[{XMLElement}, XMLElement[Except@"YO", , {content_XMLElement}] := content; XMLElement[Except@"YO", , ] := Sequence[]; XMLtest]

I need to keep now too types of XMLElements : XMLELements called "YO" and XMLElements called "TI". May you help me to modify this code in order I can add several conditions on the XMLElements that I want to keep in my XMLObjects. ?

Thank you for your help.

POSTED BY: B B
Kuba Podkalicki
Kuba Podkalicki
Posted 12 years ago

Everything boils down to patterns and function construction (there are tutorials about it, take a look):

XMLtest = {
  XMLElement["YO", {}, 2], 
  XMLElement[  "BA", {},   {
        XMLElement["YO", {}, {
           XMLElement["BA", {}, 2]}],   XMLElement["BA", {}, 2]}]
  }

Block[{XMLElement},
 XMLElement["YO", _, {content__XMLElement}] := content;
 XMLElement["YO", _, _] := Sequence[];

 XMLtest
 ]

{XMLElement[ "BA", {}, {
        XMLElement["BA", {}, 2], XMLElement["BA", {}, 2]}]}
POSTED BY: Kuba Podkalicki
B B
B B
Posted 12 years ago

You totally right and thank you for your help. I want to remove all the XMLElements which have a label different from a specific one. As you mentioned, I should be cautious because the XMLElements are nested.

In fact, i would like to do the same as you have shown me in the post "Retrieve XML Tree with only specific XMLElements" but without creating it in notebook sheet. I would like only to transform my XML data.

I hope I was enough clear.

If yes, may you help me to give me some guidelines in order to create my new XMLObject without some XMLElements ?

Thank you for your help.

P.S : Thanks to this manipulation, I could build smaller example to show the different simplifications that I want to conduct.
POSTED BY: B B
Kuba Podkalicki
Kuba Podkalicki
Posted 12 years ago
POSTED BY: Kuba Podkalicki
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