// olga: use comatch after step ia done to get values of OUTPUT parameters of a rule
String getValueOfOutputParameter(VarMember p, Rule r, OrdinaryMorphism comatch) {
if (p != null && r != null && comatch != null) {
Enumeration<GraphObject> rightObjs = comatch.getDomain();
while (rightObjs.hasMoreElements()) {
GraphObject obj = rightObjs.nextElement();
if (obj.getAttribute() != null) {
ValueTuple vt = (ValueTuple) obj.getAttribute();
for (int i = 0; i < vt.getNumberOfEntries(); i++) {
ValueMember vm = vt.getEntryAt(i);
if (vm.isSet() && vm.getExpr().isVariable() && vm.getExprAsText().equals(p.getName())) {
// we found an object obj inside of the RHS which uses the output parameter p,
// now we will find an appropriate graph object
// and to get the value of the output parameter
GraphObject go = comatch.getImage(obj);
ValueTuple vt_go = (ValueTuple) go.getAttribute();
ValueMember vm_go = vt_go.getEntryAt(vm.getName());
String parVal = vm_go.getExprAsText();
System.out.println(
parVal
+ " is value of OUTPUT parameter: --"
+ p.getName()
+ "-- of rule: "
+ r.getName());
return parVal;
}
}
}
}
}
return null;
}
// olga: propagate value of OUTPUT parameters of rule r1 to INPUT parameters of rule r2
void propagateOutParamToInParamOfRule(Hashtable<String, String> outPars, Rule r) {
if (outPars != null && !outPars.isEmpty()) {
VarTuple vars = (VarTuple) r.getAttrContext().getVariables();
for (int i = 0; i < vars.getNumberOfEntries(); i++) {
VarMember var = vars.getVarMemberAt(i);
String outVal = outPars.get(var.getName());
if (outVal != null && var.isInputParameter()) {
var.setExprAsText(outVal);
}
}
}
}
void setInputParameter(Rule r) {
VarTuple vars = (VarTuple) r.getAttrContext().getVariables();
for (int i = 0; i < vars.getNumberOfEntries(); i++) {
VarMember var = (VarMember) vars.getMemberAt(i);
if (var.isInputParameter())
System.out.println(var.getName() + " is already input parameter of rule: " + r.getName());
else {
// this var should be an input parameter
var.setInputParameter(true);
System.out.println(var.getName() + " is now input parameter of rule: " + r.getName());
}
}
}
public boolean doStep(Rule r) {
Match match = gratra.createMatch(r);
System.out.println("The match was: " + match.getRule().getName().toString());
// olga
while (match.nextCompletion()) {
if (match.isValid()) {
try {
Morphism co = StaticStep.execute(match);
System.out.println("Rule " + match.getRule().getName() + " : step is done");
didTransformation = true;
Graph graph = co.getOriginal();
Graph graph2 = co.getImage();
System.out.println();
// System.out.println("The image parameters are: " + graph.toString());
// System.out.println("The OUTPUT parameters are: " + graph2.toString());
// olga
outPar = getOutputParameters(r, outPar);
for (int i = 0; i < outPar.size(); i++) {
VarMember p = outPar.get(i);
String parVal = getValueOfOutputParameter(p, r, (OrdinaryMorphism) co);
this.outParVal.put(p.getName(), parVal);
}
((OrdinaryMorphism) co).dispose();
return true;
} catch (TypeException ex) {
ex.printStackTrace();
gragra.destroyMatch(match);
System.out.println(
"Rule "
+ match.getRule().getName()
+ " : step of match failed : "
+ ex.getMessage());
}
} else
System.out.println(
"Rule "
+ match.getRule().getName()
+ " : a match completion is not valid; try to find the next ones");
}
System.out.println("Rule " + match.getRule().getName() + " : match could not be found");
return false;
// gragra.destroyMatch(match);
// match.clear();
}
private boolean isInputParameterSet(final AttrContext attrContext, boolean left) {
AttrVariableTuple avt = attrContext.getVariables();
for (int i = 0; i < avt.getNumberOfEntries(); i++) {
VarMember v = avt.getVarMemberAt(i);
if (v.isInputParameter()) {
this.hasInputParameter = true;
if (!v.isSet()) {
if (left && leftGraphIsUsingVariable(v)) {
return false;
} else if (!left && rightGraphIsUsingVariable(v)) {
return false;
}
}
}
}
return true;
}
// olga
List<VarMember> getOutputParameters(Rule r, List<VarMember> list) {
if (list == null) list = new Vector<VarMember>();
else list.clear();
VarTuple vars = (VarTuple) r.getAttrContext().getVariables();
for (int i = 0; i < vars.getNumberOfEntries(); i++) {
VarMember var = (VarMember) vars.getMemberAt(i);
if (var.isOutputParameter()) {
System.out.println(var.getName() + " is OUTPUT parameter of rule: " + r.getName());
list.add(var);
}
// else {
// if this var should be an output parameter
// var.setOutputParameter(true);
// System.out.println(var.getName()+" is now OUTPUT parameter of rule: "+r.getName());
// }
}
return list;
}
private boolean nacIsUsingVariable(
final VarMember var, final AttrConditionTuple act, final List<OrdinaryMorphism> nacs) {
for (int l = 0; l < nacs.size(); l++) {
final OrdinaryMorphism nac = nacs.get(l);
if (nac.getTarget().isUsingVariable(var)) {
return true;
}
Vector<String> nacVars = nac.getTarget().getVariableNamesOfAttributes();
for (int j = 0; j < nacVars.size(); j++) {
String varName = nacVars.get(j);
for (int k = 0; k < act.getNumberOfEntries(); k++) {
CondMember cond = (CondMember) act.getMemberAt(k);
Vector<String> condVars = cond.getAllVariables();
if (condVars.contains(varName) && condVars.contains(var.getName())) {
return true;
}
}
}
}
return false;
}
/**
* If the kernel rule is using an input parameter and its value is already set do propagate this
* value to the attribute context of multi rules.
*/
public void applyValueOfInputParameter() {
final VarTuple vars = (VarTuple) this.getAttrContext().getVariables();
for (int i = 0; i < vars.getNumberOfEntries(); i++) {
final VarMember v = vars.getVarMemberAt(i);
if (v.isInputParameter() && v.isSet()) {
VarMember vm =
((VarTuple) this.kernelRule.getAttrContext().getVariables())
.getVarMemberAt(v.getName());
if (vm != null && (vm.getExpr() == null || !v.getExprAsText().equals(vm.getExprAsText()))) {
// vm.setExprAsText(v.getExprAsText());
vm.setExpr(v.getExpr());
}
for (int j = 0; j < this.multiRules.size(); j++) {
vm =
((VarTuple) this.multiRules.get(j).getAttrContext().getVariables())
.getVarMemberAt(v.getName());
if (vm != null
&& (vm.getExpr() == null || !v.getExprAsText().equals(vm.getExprAsText()))) {
// vm.setExprAsText(v.getExprAsText());
vm.setExpr(v.getExpr());
}
}
}
}
// System.out.println("applyValueOfInputParameter... "+this.kernelRule.getName());
// ((VarTuple) this.kernelRule.getAttrContext().getVariables()).showVariables();
// for (int j=0; j<this.multiRules.size(); j++) {
// System.out.println("applyValueOfInputParameter... "+this.multiRules.get(j).getName());
// ((VarTuple) this.multiRules.get(j).getAttrContext().getVariables()).showVariables();
// }
}
void setPars(Rule r) throws IOException {
System.out.println("\n TAKING INPUTS to APPLY Rule: " + r.getName() + "\n");
List<String> list = r.getInputParameterNames();
System.out.println("The parameters for " + r.getName() + " are: " + list);
// System.out.println("The parameters values for " + r.getName() + " are: " +
// r.getInputParameters());
System.out.println("The parameters values:");
for (int i = 0; i < list.size(); i++) {
String pname = list.get(i);
VarMember var = (VarMember) ((VarTuple) r.getAttrContext().getVariables()).getMemberAt(pname);
if (var.isSet()) System.out.println(pname + " is set to value: " + var.getExprAsText());
else System.out.println(pname + " is not set");
}
VarTuple vars = (VarTuple) r.getAttrContext().getVariables();
for (int i = 0; i < vars.getNumberOfEntries(); i++) {
VarMember var = (VarMember) vars.getMemberAt(i);
if (var.isInputParameter()) {
// olga:
if (!var.isSet()) {
System.out.println(
var.getName() + " is already input parameter of rule: " + r.getName());
System.out.println(
"\n \n Please Enter the value for input parameter for rule -- "
+ r.getName()
+ " --, parameter name -- "
+ var.getName()
+ " --: ");
Scanner scan = new Scanner(System.in);
String value = scan.nextLine();
System.out.println("The given input was: " + value);
var.setInputParameter(true);
var.setExprAsText(value);
// in1.close();
System.out.println(var.getName() + " is now input parameter of rule: " + r.getName());
} else {
System.out.println(
var.getExprAsText()
+ " is value of the INPUT parameter: "
+ var.getName()
+ " of rule: "
+ r.getName());
}
}
}
// in.close();
}