@Override
public long currentSequenceValue(SequenceKey sequenceKey, long timestamp) throws SQLException {
SequenceInfo info = sequenceMap.get(sequenceKey);
if (info == null) {
throw new SQLExceptionInfo.Builder(SQLExceptionCode.CANNOT_CALL_CURRENT_BEFORE_NEXT_VALUE)
.setSchemaName(sequenceKey.getSchemaName())
.setTableName(sequenceKey.getSequenceName())
.build()
.buildException();
}
return info.sequenceValue;
}
@Override
public void incrementSequences(
List<SequenceAllocation> sequenceAllocations,
long timestamp,
long[] values,
SQLException[] exceptions)
throws SQLException {
int i = 0;
for (SequenceAllocation sequenceAllocation : sequenceAllocations) {
SequenceKey key = sequenceAllocation.getSequenceKey();
SequenceInfo info = sequenceMap.get(key);
if (info == null) {
exceptions[i] = new SequenceNotFoundException(key.getSchemaName(), key.getSequenceName());
} else {
boolean increaseSeq = info.incrementBy > 0;
if (info.limitReached) {
SQLExceptionCode code =
increaseSeq
? SQLExceptionCode.SEQUENCE_VAL_REACHED_MAX_VALUE
: SQLExceptionCode.SEQUENCE_VAL_REACHED_MIN_VALUE;
exceptions[i] = new SQLExceptionInfo.Builder(code).build().buildException();
} else {
values[i] = info.sequenceValue;
info.sequenceValue += info.incrementBy * info.cacheSize;
info.limitReached = SequenceUtil.checkIfLimitReached(info);
if (info.limitReached && info.cycle) {
info.sequenceValue = increaseSeq ? info.minValue : info.maxValue;
info.limitReached = false;
}
}
}
i++;
}
i = 0;
for (SQLException e : exceptions) {
if (e != null) {
sequenceMap.remove(sequenceAllocations.get(i).getSequenceKey());
}
i++;
}
}