[xml] doc and xpath context reusing

[deff bacardi <deff_bacardi hotmail com>]

Hi,

 

I’m using xpath and it works well with the examples.

 

But I would like to know if it’s possible to reuse a xmlDocPtr and xmlXPathContextPtr for several xpath-parsing on the same document ?

 

I have made tests, the first xpath-parsing was correct with all datas but the second xpath-parsing returned me the nodes without attributes and children.

 

Here is the code :

 

xmlDocPtr doc;

                xmlXPathContextPtr xpathCtx;

               

               

                xmlInitParser();

                xmlXPathInit();                                

                xmlKeepBlanksDefault(0);

                doc = xmlReadFile("TestFESA210.xml",NULL, 0);

                if (doc == NULL) {

                                string err("Invalid XML document\n");

                                throw (err);

                }

                xpathCtx = xmlXPathNewContext(doc);

                if(xpathCtx == NULL) {

                                string err("Error: unable to create new XPath context\n");

                                throw (err);

                }

               

                cout << "PREMIER XPATH" << endl;

                 xpathParsing(xpathCtx,"*[contains(name(),'toto')]");  // xmlXPathEvalExpression function

               

                cout << endl << "SECOND XPATH" << endl;

                xpathParsing(xpathCtx,"*[contains(name(),'toto')]");

                               

                xmlXPathFreeContext(xpathCtx);

                xmlFreeDoc(doc);

                xmlCleanupParser();

                xmlMemoryDump();

 

 

 

Thanks and best regards.

 

Deff.

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