June 2012 - cxml-devel - mailman3.common-lisp.net

[cxml-devel] validating XML: document
by Alexandre Rademaker 12 Jul '12

12 Jul '12

Hello, I need to validate a XML file that doesn't have the doctype declaration. Actually, I don't control how the XML files are created so I am not able to change the fact that those files don't have doctype declarations. My problem is how to validate does files agains a DTD. I found at http://common-lisp.net/project/cxml/sax.html#parser that the correctly way should be: > (let ((d (cxml:parse-file "0675365413696898.xml" (cxml-dom:make-dom-builder))) (x (cxml:parse-dtd-file "LMPLCurriculo.DTD"))) (dom:map-document (cxml:make-validator x #"CURRICULO-VITAE") d)) But that gives me two warnings and return a NIL Warning: deprecated SAX default method used by a handler that is not a subclass of SAX:ABSTRACT-HANDLER or HAX:ABSTRACT-HANDLER Warning: deprecated SAX default method used by a handler that is not a subclass of SAX:ABSTRACT-HANDLER or HAX:ABSTRACT-HANDLER NIL It seems to work. I also tried with an invalid XML and the code fired an error! Nevertheless, what are bothering me are does warnings!! Any idea? Best, Alexandre Rademaker http://arademaker.github.com/

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[cxml-devel] Real-world example: with attachment
by Steven Nunez 11 Jun '12

11 Jun '12

Greetings again, Perhaps a good example would be a real one. I'm starting with some simple functions, such as obtaining the model name, algorithm, etc, from the attached XML example. Can anyone provide an exemplary method for doing this? Below is my naive attempt, which are all failing miserably: (defun algorithm-name (model) "Returns the algorithm for the model" (stp:filter-recursively (stp:of-name "algorithmName" (stp:namespace-uri model)) model)) I know this one will (if it were working) return a list, but since I can't get past the namespace problem haven't bothered to go any further. That function, I assume, is a rather trivial one for someone with some good examples or knowledge to work from. Here's a slightly more difficult function: (defun model-coefficient-list (model) "Returns a nested list of the following structure: (<model-name>-coefficients (coefficient1 coefficient1-value) (coefficient1 coefficient2-value) ... (coefficientn coefficientn-value))" ...) Something like this would be good to put on the STP website. Regards, - Steve

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[cxml-devel] Real-world Example
by Steven Nunez 11 Jun '12

11 Jun '12

Greetings again, Perhaps a good example would be a real one. I'm starting with some simple functions, such as obtaining the model name, algorithm, etc, from the attached XML example. Can anyone provide an exemplary method for doing this? Below is my naive attempt, which are all failing miserably: (defun algorithm-name (model) "Returns the algorithm for the model" (stp:filter-recursively (stp:of-name "algorithmName" (stp:namespace-uri model)) model)) I know this one will (if it were working) return a list, but since I can't get past the namespace problem haven't bothered to go any further. That function, I assume, is a rather trivial one for someone with some good examples or knowledge to work from. Here's a slightly more difficult function: (defun model-coefficient-list (model) "Returns a nested list of the following structure: (<model-name>-coefficients (coefficient1 coefficient1-value) (coefficient1 coefficient2-value) ... (coefficientn coefficientn-value))" ...) Something like this would be good to put on the STP website. Regards, - Steve

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[cxml-devel] namespace-uri usage
by Steven Nunez 11 Jun '12

11 Jun '12

Gents, Can anyone tell me why namespace-uri can't give me the namespace for this test file? <PMML version="4.0" xsi:schemaLocation="http://www.dmg.org/PMML-4_0 http://www.dmg.org/v4-0/pmml-4-0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.dmg.org/PMML-4_0"> <Header copyright="Steve Nunez" description="Sample for Namespace"> <Timestamp>2012-06-11T08:17:10.8</Timestamp> </Header> </PMML> * (defparameter *ns-test* (cxml:parse #p"ns-test.xml" (stp:make-builder))) * (stp:namespace-uri *ns-test*) This, and a few variations, give "There is no applicable method for the generic function". I suspect the answer is because I'm asking for the namespace of a document, whereas STP wants it for an element. That's fine, but different enough from the typical ways of XML processing to make figuring out how to use it rather difficult. Does anyone have any working examples of processing documents typically found 'in the wild'? I've read the test.lisp file, but it simply programatically creates elements and then tests for them. Some real-world examples, common idioms and best practices would be very helpful. Cheers, - SteveN

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[cxml-devel] cxml-stp usage
by Steven Nunez 10 Jun '12

10 Jun '12

Greetings all, I'm a bit stumped by some of the STP functions and usage. The documentation is, well, a bit sparse, so it's not clear whether there really is a bug or I'm mis-interpreting what I'm reading. Here is a simple function that should return all the child nodes of an element with the local-name of 'RegressionModel': (defun function-name (document) "Return the PMML model type of the document" (stp:filter-recursively (stp:of-name "RegressionModel") (stp:first-child document))) According to the documentation of filter-recursively: Return a list of descendant nodes of node in pre-order, from which nodes that do not satisfy predicate have been removed.and that for of-name: This function creates a test function for nodes of this name. > >The function returned will return T if the argument is an instance of attribute or element and has the specified local-name and namespace URI, and will return NIL otherwise. > >If local-name is nil, only the namespace URI is considered for comparison. > and here's the local snippet of the xmls that I'm trying to filter for: #.(CXML-STP:ELEMENT > #| :PARENT of type ELEMENT |# > :ATTRIBUTES '(#.(CXML-STP:ATTRIBUTE > #| :PARENT of type ELEMENT |# > :VALUE "PolynomialRegression" > :LOCAL-NAME "algorithmName") > #.(CXML-STP:ATTRIBUTE > #| :PARENT of type ELEMENT |# > :VALUE "regression" > :LOCAL-NAME "functionName") > #.(CXML-STP:ATTRIBUTE > #| :PARENT of type ELEMENT |# > :VALUE "KNIME Polynomial Regression" > :LOCAL-NAME "modelName") > #.(CXML-STP:ATTRIBUTE > #| :PARENT of type ELEMENT |# > :VALUE "s_s_temp" > :LOCAL-NAME "targetFieldName")) > :BASE-URI "file://+/Users/nunez/src/lisp/pmml/polynomial-regression.xml" > :CHILDREN '(#.(CXML-STP:TEXT > #| :PARENT of type ELEMENT |# > :DATA " > ")So, there's an attribute with a local-name that matches the value in of-name. Why is this function always returning NIL? Is stp stable enough for production use? It's been a while since it's been updated. I'm new to XML with LISP, so if there's a better documented or easier way to process these documents, happy to take a different route. Finally, does anyone know why I need to pass the function the first child? Seem cxml-stp is getting tripped up on the first line of the xml file: <?xml version="1.0" encoding="UTF-8"?> and forcing me to manually grab the second element. Is there a convention or idiom I'm missing? Sample file attached. Cheers, - Steve

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