private JavaFrame findFrame() { RelNode previous = rel; while (true) { JavaFrame frame = (JavaFrame) mapRel2Frame.get(previous); if (frame.bind != null) { tracer.log( Level.FINE, "Bind " + rel.toString() + " to " + previous.toString() + "(" + frame.bind + ")"); return frame; } // go deeper List<RelNode> inputs = previous.getInputs(); assert (inputs.size() == 1) : "input is not bound"; previous = inputs.get(0); } }
/** * Records the fact that instances of <code>rel</code> are available via <code>bind</code> (which * may be eager or lazy). */ private void bind(RelNode rel, Bind bind) { tracer.log(Level.FINE, "Bind " + rel.toString() + " to " + bind); JavaFrame frame = (JavaFrame) mapRel2Frame.get(rel); frame.bind = bind; boolean stupid = SaffronProperties.instance().stupid.get(); if (stupid) { // trigger the declaration of the variable, even though it // may not be used Util.discard(bind.getVariable()); } }