examples.Indexing.indexReader.c Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of vtd-xml Show documentation

XimpleWare's VTD-XML is, far and away, the industry's most advanced and powerful XML processing model for SOA and Cloud Computing

There is a newer version: 2.13.4

Show newest version

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include "../xpath1.h"
#include "../helper.h"
#include "../vtdGen.h"
#include "../XMLModifier.h"
//This program loads VTD+XML index from disk then
// does incremental update to the XML message
// and writes the output into a new XML file
struct exception_context the_exception_context[1];

int main(){

	exception e;
	FILE *f = NULL ,*fw = NULL;
	int i = 0,t,result,count=0;
 	wchar_t *tmpString;	
	
	UByte *xml = NULL; // this is the buffer containing the XML content, UByte means unsigned byte
	VTDGen *vg = NULL; // This is the VTDGen that parses XML
	VTDNav *vn = NULL; // This is the VTDNav that navigates the VTD records
	AutoPilot *ap = NULL;
	XMLModifier *xm = NULL;

	// allocate a piece of buffer then reads in the document content
	// assume "c:\soap2.xml" is the name of the file
	f = fopen("oldpo.vxl","rb");
	fw = fopen("newpo_update.xml","wb");

	Try{
		vg = createVTDGen();
		vn = loadIndex(vg,f);
		ap = createAutoPilot2();
		xm = createXMLModifier();
		if (selectXPath(ap,L"/purchaseOrder/items/item[@partNum='872-AA']")){
			bind(ap,vn);
			bind4XMLModifier(xm,vn);
			while((result=evalXPath(ap))!= -1){
				remove4XMLModifier(xm);
				insertBeforeElement(xm,L"");	
			}
		}
		if (selectXPath(ap,L"/purchaseOrder/items/item/USPrice[.<40]/text()")){
			while((result=evalXPath(ap))!= -1){
				updateToken(xm,result,L"200");
			}
		}
		output(xm,fw);
		
		fclose(f);
		fclose(fw);
		// remember C has no automatic garbage collector
		// needs to deallocate manually.
		freeVTDNav(vn);
		freeVTDGen(vg);
		freeXMLModifier(xm);
		freeAutoPilot(ap);
	}
	Catch (e) {
		// manual garbage collection here
		freeVTDGen(vg);
	}
  return 0;
}