private LanguageNode handleOrFunction(FunctionCall fc) {
ArrayList<Part> subparts = new ArrayList<Part>();
for (ExpressionNode en : fc.getParameters()) {
Part p = state.get(en);
if (p == null) {
broadening();
return fc;
}
subparts.add(p);
}
// now to figure out what we have. we may have a a bunch of incomplete subexprs,
// in which case we took a = 1 or a = 2 or a = 3 => a part collection of incompletes
// or we may have (a = 1 and b = 2) or (a =3 and b =4) ... - likewise
// or they maybe complete. regardless, just build a partcollection and move on.
// sort subparts by table key; if there's more than one let's just set broadening for now
TableKey tk = null;
for (Part p : subparts) {
if (tk == null) tk = p.getTableKey();
else if (!tk.equals(p.getTableKey())) {
broadening();
return fc;
}
}
OredParts op = parent.buildOredParts(fc, subparts);
if (op.isComplete()) setComplete(op);
state.put(fc, op);
return fc;
}
protected TableKey assertSingleTableKey(List<Part> comps) {
TableKey tk = null;
for (Part p : comps) {
if (tk == null) tk = p.getTableKey();
else if (!tk.equals(p.getTableKey()))
throw new SchemaException(Pass.PLANNER, "Mixed table keys for key collector");
}
return tk;
}