belliottsmith commented on code in PR #181:
URL: https://github.com/apache/cassandra-accord/pull/181#discussion_r1995282309
##########
accord-core/src/main/java/accord/impl/CommandChange.java:
##########
@@ -329,50 +341,142 @@ public Cleanup maybeCleanup(Input input, Cleanup cleanup)
newSaveStatus = SaveStatus.TruncatedUnapplied;
saveStatus = newSaveStatus;
}
- forceSetNulls(eraseKnownFieldsMask[newSaveStatus.ordinal()]);
+ forceSetNulls(clearFields,
eraseKnownFieldsMask[newSaveStatus.ordinal()]);
}
+ this.cleanup = cleanup;
return cleanup;
}
- protected void setNulls(int mask)
+ protected void setNulls(boolean clearFields, int newFlags)
{
- mask &= ~(flags >>> 16); // limit ourselves to those fields that
have not already been set (high 16 bits are those already-set fields)
- forceSetNulls(mask);
+ newFlags &= ~(flags >>> 16); // limit ourselves to those fields
that have not already been set (high 16 bits are those already-set fields)
+ forceSetNulls(clearFields, newFlags);
+ }
+
+ protected boolean forceSetNulls(boolean clearFields, int newFlags)
+ {
+ newFlags &= ~nulls(flags); // limit ourselves to those fields that
are not already null
+ newFlags = nulls(newFlags); // limit ourselves to those fields
that are now being set to null
+ if (newFlags == 0)
+ return false;
+
+ if (clearFields)
+ {
+ int iterable = toIterableSetFields(newFlags);
+ for (Field next = nextSetField(iterable); next != null;
iterable = unsetIterable(next, iterable), next = nextSetField(iterable))
+ {
+ switch (next)
+ {
+ default: throw new UnhandledEnum(next);
+ case PARTICIPANTS: participants = null;
break;
+ case SAVE_STATUS: saveStatus = null;
break;
+ case PARTIAL_DEPS: partialDeps = null;
break;
+ case EXECUTE_AT: executeAt = null;
break;
+ case EXECUTES_AT_LEAST: executesAtLeast = null;
break;
+ case MIN_UNIQUE_HLC: minUniqueHlc = 0;
break;
+ case DURABILITY: durability = null;
break;
+ case ACCEPTED: acceptedOrCommitted = null;
break;
+ case PROMISED: promised = null;
break;
+ case WAITING_ON: waitingOn = null;
break;
+ case PARTIAL_TXN: partialTxn = null;
break;
+ case WRITES: writes = null;
break;
+ case CLEANUP: cleanup = null;
break;
+ case RESULT: result = null;
break;
+ }
+ }
+ }
+ flags |= newFlags;
+ return true;
}
- protected void forceSetNulls(int mask)
+ // only populate regular fields that are not already set, but apply
any Cleanup if it is stronger than any already present
+ public boolean fillInMissingOrCleanup(boolean clearFields, Builder add)
{
- mask &= ~nullMask(flags); // limit ourselves to those fields that
are not already null
- mask = nullMask(mask); // limit ourselves to those fields that are
now being set to null
- int iterable = toIterableSetFields(mask);
- for (Field next = nextSetField(iterable); next != null; iterable =
unsetIterable(next, iterable), next = nextSetField(iterable))
+ int addFlags = notAlreadySet(not(CLEANUP, add.flags), flags);
+ if (addFlags == 0)
+ return addCleanup(true, clearFields, add.cleanup);
+
+ setNulls(false, addFlags);
+ int iterable = toIterableSetFields(notNulls(addFlags));
+ for (Field next = nextSetField(iterable) ; next != null; next =
nextSetField(iterable = unsetIterable(next, iterable)))
{
switch (next)
{
default: throw new UnhandledEnum(next);
- case PARTICIPANTS: participants = null;
break;
- case SAVE_STATUS: saveStatus = null;
break;
- case PARTIAL_DEPS: partialDeps = null;
break;
- case EXECUTE_AT: executeAt = null;
break;
- case EXECUTES_AT_LEAST: executesAtLeast = null;
break;
- case MIN_UNIQUE_HLC: minUniqueHlc = 0;
break;
- case DURABILITY: durability = null;
break;
- case ACCEPTED: acceptedOrCommitted = null;
break;
- case PROMISED: promised = null;
break;
- case WAITING_ON: waitingOn = null;
break;
- case PARTIAL_TXN: partialTxn = null;
break;
- case WRITES: writes = null;
break;
- case CLEANUP: cleanup = null;
break;
- case RESULT: result = null;
break;
+ case PARTICIPANTS: participants = add.participants;
break;
+ case SAVE_STATUS: saveStatus = add.saveStatus;
break;
+ case PARTIAL_DEPS: partialDeps = add.partialDeps;
break;
+ case EXECUTE_AT: executeAt = add.executeAt;
break;
+ case EXECUTES_AT_LEAST: executesAtLeast =
add.executesAtLeast; break;
+ case MIN_UNIQUE_HLC: minUniqueHlc = add.minUniqueHlc;
break;
+ case DURABILITY: durability = add.durability;
break;
+ case ACCEPTED: acceptedOrCommitted =
add.acceptedOrCommitted; break;
+ case PROMISED: promised = add.promised;
break;
+ case WAITING_ON: waitingOn = add.waitingOn;
break;
+ case PARTIAL_TXN: partialTxn = add.partialTxn;
break;
+ case WRITES: writes = add.writes;
break;
+ case RESULT: result = add.result;
break;
}
}
- flags |= mask;
+ addCleanup(true, clearFields, add.cleanup);
+ return true;
+ }
+
+ // returns true if we made a material update to the Builder;
+ // that is, if we cleared a non-null field or if we are already
mask-only
+ public boolean clearSuperseded(boolean clearFields, Builder
superseding)
+ {
+ int unset = flags & superseding.flags;
+ if (notNulls(unset) == 0 && notNulls(flags) != 0)
+ return false;
+
+ forceSetNulls(clearFields, setFieldsMask(unset));
+ return true;
+ }
+
+ public boolean addCleanup(boolean saveCleanup, boolean clearFields,
Cleanup addCleanup)
+ {
+ if (addCleanup == null || addCleanup == NO)
+ return false;
+
+ if (cleanup != null && addCleanup.compareTo(cleanup) <= 0)
+ return false;
+
+ if (saveCleanup)
+ cleanup = addCleanup;
+
+ if (saveStatus != null &&
saveStatus.compareTo(cleanup.appliesIfNot) >= 0)
Review Comment:
Hmm, not sure what's going on in UX, but this is not up to date - we always
assign cleanup now, so this is not null
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