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mongodb/db/introspect.h

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2007-11-05 02:47:12 +01:00
// introspect.h
#pragma once
#include "../stdafx.h"
#include "jsobj.h"
#include "pdfile.h"
auto_ptr<Cursor> getSpecialCursor(const char *ns);
class SingleResultObjCursor : public Cursor {
int i;
protected:
JSObjBuilder b;
void reg(const char *as); /* register as a certain namespace */
public:
SingleResultObjCursor() { i = 0; }
virtual bool ok() { return i == 0; }
virtual Record* _current() { assert(false); return 0; }
virtual DiskLoc currLoc() { assert(false); return DiskLoc(); }
virtual void fill() = 0;
virtual JSObj current() {
assert(i == 0);
fill();
return b.done();
}
virtual bool advance() {
i++;
return false;
}
};