public RexNode getIObject() {
if (object == null) {
RelDataTypeFactory typeFactory = getCluster().getTypeFactory();
RexBuilder b = getBuilder();
final SqlFunction GET_IOBJECT =
new SqlUserDefinedFunction(
new SqlIdentifier("GET_IOBJECT", SqlParserPos.ZERO),
ReturnTypes.explicit(
typeFactory.createTypeWithNullability(
typeFactory.createJavaType(IObject.class), false)),
null,
OperandTypes.ANY_ANY,
ImmutableList.of(
typeFactory.createTypeWithNullability(
typeFactory.createJavaType(ISnapshot.class), false),
typeFactory.createJavaType(int.class)),
ScalarFunctionImpl.create(ISnapshotMethods.class, "getIObject"));
object = b.makeCall(GET_IOBJECT, getSnapshot(), getIObjectId());
}
return object;
}
