private void verifyTypeOperation(Value val, Value param, boolean isNotEqual) {
if (val.getPath() == null) return;
PCPath path = (PCPath) val.getPath();
Discriminator disc = ((Type) val).getDiscriminator();
if (disc == null
|| !(val.getMetaData().getPCSuperclass() != null
|| val.getMetaData().getPCSubclasses().length > 0))
throw new UserException(
_loc.get(
"invalid-type-argument",
path.last() != null ? path.getPCPathString() : path.getSchemaAlias()));
if (disc.getColumns().length == 0) {
if (disc.getStrategy() instanceof NoneDiscriminatorStrategy) {
// limited support for table per class inheritance hierarchy
if (path.last() != null)
throw new UserException(_loc.get("type-argument-unsupported", path.last().getName()));
if (isNotEqual) {
if (param != null && param instanceof Null)
throw new UserException(
_loc.get("type-in-expression-unsupported", path.getSchemaAlias()));
else
throw new UserException(_loc.get("type-not-equal-unsupported", path.getSchemaAlias()));
}
}
if (param != null && param instanceof CollectionParam)
throw new UserException(_loc.get("collection-param-unsupported"));
}
}
public Expression bindKeyVariable(Value var, Value val) {
// handle the strange case of using a constant path to bind a
// variable; in these cases the variable acts like an unbound
// variable that we limit by using an IN clause on the constant
// value collection
if (val instanceof Const) {
PCPath path = new PCPath(_type, (Variable) var);
path.setMetaData(var.getMetaData());
return new InKeyExpression(path, (Const) val);
}
return new BindVariableExpression((Variable) var, (PCPath) val, true);
}
public Expression contains(Value map, Value arg) {
if (map instanceof Const) {
if (arg instanceof Type) {
// limited support for table per class inheritance
verifyTypeOperation(arg, map, false);
if (((ClassMapping) arg.getMetaData()).getDiscriminator().getColumns().length == 0)
return new EqualTypeExpression((Val) arg, (Val) map);
}
return new InExpression((Val) arg, (Const) map);
}
if (map instanceof SubQ) return new InSubQExpression((Val) arg, (SubQ) map);
return new ContainsExpression((Val) map, (Val) arg);
}
public Value cast(Value val, Class cls) {
val.setImplicitType(cls);
return val;
}