Example 1
The following example useslr_xml_get_valuesto search for the name of an employee.
First, a simple XML string is stored in parameterXML_Input_Param. Then,lr_xml_get_valuesis invoked with the XPath query string "/employee/name". This query is then processed on theXML_Input_Paramparameter string. The result of the query is stored in theOutputParamparameter. The value ofOutputParamis evaluated using lr_eval_string.
#include "as_web.h"
char *xml_input=
"<employee>"
"<name>John Smith</name>"
"<cubicle>227</cubicle>"
"</employee>";
Action() {
lr_save_string(xml_input, "XML_Input_Param"); // Save input as parameter
lr_xml_get_values("XML={XML_Input_Param}",
"ValueParam=OutputParam",
"Query=/employee/name",
LAST);
lr_output_message(lr_eval_string("Query result = {OutputParam}"));
return 0;
}
Output:
Action.c(13): "lr_xml_get_values" was successful, 1 match processed
Action.c(18): Query result = John Smith
Example 2
The following example is similar to Example 1 except that multiple values are retrieved. The query retrieves all telephone extensions from the XML input string,xml_input.
#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>"
"<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
NumOfValues=lr_xml_get_values("XML={XML_Input_Param}",
"ValueParam=OutputParam",
"Query=/acme_org/*/employee/extension",
"SelectAll=yes", LAST);
for ( i = 0; i < NumOfValues; i++) { /* Print multiple values of OutputParam */
sprintf (buf, "Retrieved value %d : {OutputParam_%d}", i+1, i+1);
lr_output_message(lr_eval_string(buf));
}
return 0;
}
Output:
Action.c(34): Retrieved value 1 : 2145
Action.c(34): Retrieved value 2 : 2375
