Example: lr_xml_extract

The following example uses lr_xml_extract to retrieve the employees in the engineering department from the XML string xml_input. lr_xml_extract extracts the entire string fragment that makes up the tag /acme_org/engineering_dept/employee.

The resulting fragment is stored in the XMLFragmentParam parameter Result, which is sent to the output at the end of the test.

For more examples of the use of lr_xml_extract, see Get a fragment in Example Scripts for XML Queries.

#include "as_web.h"

char * xml_input = 
"<acme_org>"
     " <accounts_dept>"
          "<employee>"
               " <name>John Smith</name>"
               "<cubicle>227</cubicle>"
               "<extension>2145</extension>"
          "</employee>"
     "</accounts_dept>"
     "<engineering_dept>"
          "<employee level=\"manager\">"
               "<name>Sue Jones</name>"
               "<extension>2375</extension>"
          "</employee>"
     "</engineering_dept>"
"</acme_org>";

Action() {

     int i, NumOfValues;
     char buf[64];

     lr_save_string(xml_input, "XML_Input_Param"); // Save input as parameter

     lr_xml_extract("XML={XML_Input_Param}",
          "XMLFragmentParam=Result", 
          "Query=/acme_org/engineering_dept/employee", LAST );

     lr_output_message(lr_eval_string("Extracted: {Result}"));

     return 0;
}

Example 2

In the following example, lr_xml_extract extracts an attribute and its value from the employee element.

lr_xml_extract( "Xml={XML_Input_Param}",

    "Query=/acme_org/engineering_dept/employee/@level",

    "XMLFragmentParam=Result",

    LAST

    );

    lr_output_message(lr_eval_string("***** {Result} *****"));