public void visitAndExpr(OpAnd and) {
if (predicates > 0) {
Expression parent = and.getParent();
if (!(parent instanceof PathExpr)) {
LOG.warn("Parent expression of boolean operator is not a PathExpr: " + parent);
return;
}
PathExpr path;
Predicate predicate;
if (parent instanceof Predicate) {
predicate = (Predicate) parent;
path = predicate;
} else {
path = (PathExpr) parent;
parent = path.getParent();
if (!(parent instanceof Predicate) || path.getLength() > 1) {
LOG.warn(
"Boolean operator is not a top-level expression in the predicate: "
+ parent.getClass().getName());
return;
}
predicate = (Predicate) parent;
}
if (LOG.isTraceEnabled())
LOG.trace("Rewriting boolean expression: " + ExpressionDumper.dump(and));
hasOptimized = true;
LocationStep step = (LocationStep) predicate.getParent();
Predicate newPred = new Predicate(context);
newPred.add(and.getRight());
step.insertPredicate(predicate, newPred);
path.replaceExpression(and, and.getLeft());
}
}
