MojErr MojDbQuery::addClause(WhereMap& map, const MojChar* propName, CompOp op, const MojObject& val, MojDbCollationStrength coll)
{
MojAssert(propName);
// only allow valid ops
if (!(op >= OpEq && op <= OpSubString))
MojErrThrowMsg(MojErrDbInvalidQuery, _T("db: invalid query op"));
// only allow array values for = or % or %% ops
if (val.type() == MojObject::TypeArray && op != OpEq && op != OpPrefix && op != OpSubString)
MojErrThrowMsg(MojErrDbInvalidQuery, _T("db: query contains array value for non-eq op"));
// check to see if the prop is referenced in a prior clause
WhereMap::Iterator iter;
MojErr err = map.find(propName, iter);
MojErrCheck(err);
if (iter == map.end()) {
// create new clause
err = createClause(map, propName, op, val, coll);
MojErrCheck(err);
} else {
// add clause to previously referenced prop.
err = updateClause(iter.value(), op, val, coll);
MojErrCheck(err);
}
return MojErrNone;
}
/**
* Generate and print a random clause with nbLiterals literals
* @param f the formula
* @param clauseNumber : the clause to generate
* @param : the number of literals that contain the clause
*/
void generateClause(Formula * f, int nbLiterals) {
Clause * c;
createClause(&c);
addClause(f,c);
for(int i = 0;i<nbLiterals;i++) {
int sign = rand()%2 ? 1 : -1;
Literal l = sign*(rand()%f->nbVariables+1);
addLiteralInClause(*f,c,l);
}
}