public StatefulBuffer readStatefulBufferById(Transaction trans, int id, boolean lastCommitted) {
if (id <= 0) {
throw new IllegalArgumentException("id=" + id);
}
Slot slot =
lastCommitted ? trans.idSystem().committedSlot(id) : trans.idSystem().currentSlot(id);
if (DTrace.enabled) {
DTrace.SLOT_READ.logLength(id, slot);
}
return readStatefulBufferBySlot(trans, id, slot);
}
private Constraint addEvaluationToAllConstraints(QConEvaluation eval) {
if (i_constraints.size() == 0) {
_trans
.container()
.classCollection()
.iterateTopLevelClasses(
new Visitor4() {
public void visit(Object obj) {
ClassMetadata classMetadata = (ClassMetadata) obj;
QConClass qcc = new QConClass(_trans, classMetadata.classReflector());
addConstraint(qcc);
toConstraint(i_constraints).or(qcc);
}
});
}
Iterator4 i = iterateConstraints();
while (i.moveNext()) {
((QCon) i.current()).addConstraint(eval);
}
// FIXME: should return valid Constraint object
return null;
}
private void debugCheckBuffer(ByteArrayBuffer buffer, FreeSlotNode node) {
if (!(buffer instanceof StatefulBuffer)) {
return;
}
Transaction trans = ((StatefulBuffer) buffer).transaction();
if (!(trans.container() instanceof IoAdaptedObjectContainer)) {
return;
}
StatefulBuffer checker = trans.container().getWriter(trans, node._peer._key, node._key);
checker.read();
for (int i = 0; i < node._key; i++) {
if (checker.readByte() != (byte) 'X') {
System.out.println("!!! Free space corruption at:" + node._peer._key);
break;
}
}
}
public RawClassSpec readSpec(Transaction trans, ByteArrayBuffer reader) {
byte[] nameBytes = readName(trans, reader);
String className = trans.container().stringIO().read(nameBytes);
readMetaClassID(reader); // skip
int ancestorID = reader.readInt();
reader.incrementOffset(Const4.INT_LENGTH); // index ID
int numFields = reader.readInt();
return new RawClassSpec(className, ancestorID, numFields);
}
private ReflectClass reflectClassForClass(Object example) {
if (example instanceof ReflectClass) {
return (ReflectClass) example;
}
if (example instanceof Class) {
return _trans.reflector().forClass((Class) example);
}
return null;
}
public final boolean delete4(
Transaction transaction, ObjectReference ref, Object obj, int cascade, boolean userCall) {
int id = ref.getID();
StatefulBuffer reader = readStatefulBufferById(transaction, id);
if (reader != null) {
if (obj != null) {
if ((!showInternalClasses()) && Const4.CLASS_INTERNAL.isAssignableFrom(obj.getClass())) {
return false;
}
}
reader.setCascadeDeletes(cascade);
transaction.idSystem().notifySlotDeleted(id, SlotChangeFactory.USER_OBJECTS);
ClassMetadata classMetadata = ref.classMetadata();
classMetadata.delete(reader, obj);
return true;
}
return false;
}
@Override
public boolean isDeleted(Transaction trans, int id) {
return trans.idSystem().isDeleted(id);
}
public final Slot allocateSlotForNewUserObject(Transaction trans, int id, int length) {
Slot slot = allocateSlot(length);
trans.idSystem().notifySlotCreated(id, slot, SlotChangeFactory.USER_OBJECTS);
return slot;
}
public final void rollback1(Transaction trans) {
trans.rollback();
}
public final int idForNewUserObject(Transaction trans) {
return trans.idSystem().newId(SlotChangeFactory.USER_OBJECTS);
}
public void commit1(Transaction trans) {
trans.commit();
}
public byte[] readName(Transaction trans, ByteArrayBuffer reader) {
byte[] name = readName(trans.container().stringIO(), reader);
return name;
}
public void captureQueryResultConfig() {
final Config4Impl config = _trans.container().config();
_evaluationMode = config.evaluationMode();
_prefetchDepth = config.prefetchDepth();
_prefetchCount = config.prefetchObjectCount();
}
protected ObjectContainerBase stream() {
return _trans.container();
}
