private Collection4 introduceClassConstrain(ReflectClass claxx) {
final Collection4 newConstraints = new Collection4();
final Iterator4 existingConstraints = iterateConstraints();
while (existingConstraints.moveNext()) {
final QCon existingConstraint = (QConObject) existingConstraints.current();
final BooleanByRef removeExisting = new BooleanByRef(false);
final QCon newConstraint = existingConstraint.shareParentForClass(claxx, removeExisting);
if (newConstraint != null) {
newConstraints.add(newConstraint);
addConstraint(newConstraint);
if (removeExisting.value) {
removeConstraint(existingConstraint);
}
}
}
return newConstraints;
}
private List4 createQCandidatesList() {
List4 candidatesList = null;
Iterator4 i = iterateConstraints();
while (i.moveNext()) {
QCon constraint = (QCon) i.current();
constraint = constraint.getRoot();
ClassMetadata classMetadata = constraint.getYapClass();
if (classMetadata == null) {
continue;
}
if (constraintCanBeAddedToExisting(candidatesList, constraint)) {
continue;
}
QCandidates candidates = new QCandidates((LocalTransaction) _trans, classMetadata, null);
candidatesList = new List4(candidatesList, candidates);
}
return candidatesList;
}
public CreateCandidateCollectionResult createCandidateCollection() {
List4 candidatesList = createQCandidatesList();
boolean checkDuplicates = false;
boolean topLevel = true;
Iterator4 i = iterateConstraints();
while (i.moveNext()) {
QCon constraint = (QCon) i.current();
QCon old = constraint;
constraint = constraint.getRoot();
if (constraint != old) {
checkDuplicates = true;
topLevel = false;
}
ClassMetadata classMetadata = constraint.getYapClass();
if (classMetadata == null) {
break;
}
addConstraintToCandidatesList(candidatesList, constraint);
}
return new CreateCandidateCollectionResult(candidatesList, checkDuplicates, topLevel);
}
// Our QConPath objects are just placeholders to fields,
// so the parents are reachable.
// If we find a "real" constraint, we throw the QPath
// out and replace it with the other constraint.
private void morph(BooleanByRef removeExisting, QCon newConstraint, ReflectClass claxx) {
boolean mayMorph = true;
if (claxx != null) {
ClassMetadata yc = i_trans.container().produceClassMetadata(claxx);
if (yc != null) {
Iterator4 i = iterateChildren();
while (i.moveNext()) {
QField qf = ((QCon) i.current()).getField();
if (!yc.hasField(i_trans.container(), qf.name())) {
mayMorph = false;
break;
}
}
}
}
if (mayMorph) {
Iterator4 j = iterateChildren();
while (j.moveNext()) {
newConstraint.addConstraint((QCon) j.current());
}
if (hasJoins()) {
Iterator4 k = iterateJoins();
while (k.moveNext()) {
QConJoin qcj = (QConJoin) k.current();
qcj.exchangeConstraint(this, newConstraint);
newConstraint.addJoin(qcj);
}
}
i_parent.exchangeConstraint(this, newConstraint);
removeExisting.value = true;
} else {
i_parent.addConstraint(newConstraint);
}
}
private boolean forEachConstraintRecursively(Function4 block) {
Queue4 queue = new NoDuplicatesQueue(new NonblockingQueue());
Iterator4 constrIter = iterateConstraints();
while (constrIter.moveNext()) {
queue.add(constrIter.current());
}
while (queue.hasNext()) {
QCon constr = (QCon) queue.next();
Boolean cancel = (Boolean) block.apply(constr);
if (cancel.booleanValue()) {
return true;
}
Iterator4 childIter = constr.iterateChildren();
while (childIter.moveNext()) {
queue.add(childIter.current());
}
Iterator4 joinIter = constr.iterateJoins();
while (joinIter.moveNext()) {
queue.add(joinIter.current());
}
}
return false;
}
private boolean attachToExistingConstraints(
Collection4 newConstraintsCollector, Object obj, boolean onlyForPaths) {
boolean found = false;
final Iterator4 j = iterateConstraints();
while (j.moveNext()) {
QCon existingConstraint = (QCon) j.current();
final BooleanByRef removeExisting = new BooleanByRef(false);
if (!onlyForPaths || (existingConstraint instanceof QConPath)) {
QCon newConstraint = existingConstraint.shareParent(obj, removeExisting);
if (newConstraint != null) {
newConstraintsCollector.add(newConstraint);
addConstraint(newConstraint);
if (removeExisting.value) {
removeConstraint(existingConstraint);
}
found = true;
if (!onlyForPaths) {
break;
}
}
}
}
return found;
}