@SuppressWarnings({"unchecked", "rawtypes"})
@Override
public Stream<?> doApply(List<Stream<?>> streamsList) {
AtomicInteger ctr = new AtomicInteger(2);
Stream<?> unionizedStream =
streamsList
.stream()
.reduce(
(lStream, rStream) -> {
Stream<?> newStream = Stream.concat(lStream, rStream);
int currentStreamIdx = ctr.getAndIncrement();
for (int j = 0; j < checkPointProcedures.size(); j++) {
Tuple2<Integer, Object> postProc = checkPointProcedures.get(j);
if ((Integer) postProc._1() == currentStreamIdx) {
SerFunction f = (SerFunction) postProc._2();
if (f != null) {
newStream = (Stream) f.apply(newStream);
}
}
}
return newStream;
})
.get();
if (this.distinct) {
unionizedStream = unionizedStream.distinct();
}
return unionizedStream;
}
private Stream<PostponingReasons> getPostponingReasonsStream(
String sql, boolean doDistinctAfterFirstStream) {
final AccumulationContext context = new AccumulationContext();
final LazyResultSetIterator<Pair> iterator =
LazyResultSetIterator.<Pair>of(
Common.getRsSupplier(jdbcConnector, sql, "streamAllPostponingReasons"),
Common.getMappingSqlFunction(
rs ->
new Pair(
sqlDialect.translateFromDb(rs.getObject(1), UtcDay.class),
CurrencyUnit.ofNumericCode(rs.getInt(2))),
sql,
"streamAllPostponingReasons"),
sql);
Stream<Pair> stream = iterator.stream();
if (doDistinctAfterFirstStream) {
stream = stream.distinct();
}
return stream
.filter(
pair -> {
if (context.builder == null) {
context.builder = ImmutableSet.builder();
context.currentDay = pair.day;
context.builder.add(pair.unit);
return false;
}
if (!pair.day.equals(context.currentDay)) {
return true;
} else {
context.builder.add(pair.unit);
return false;
}
})
.map(
pair -> {
final PostponingReasons postponingReasons =
new PostponingReasons(context.currentDay, context.builder.build());
if (iterator.hasNext()) {
context.builder = ImmutableSet.builder();
context.currentDay = pair.day;
context.builder.add(pair.unit);
}
return postponingReasons;
});
}
public static String appClassName() {
try (Stream<String> apps = apps()) {
List<String> results = apps.distinct().collect(toList());
if (results.size() > 1) {
throw new IllegalStateException(
"Multiple candidates "
+ "implement com.cakemanny.app.App:\n"
+ String.join("\n", results)
+ "\nPlease specify one using the prog.className "
+ "system property");
} else if (results.isEmpty()) {
throw new NoSuchElementException(
"Unable to find any classes "
+ "that implement com.cakemanny.app.App on the classpath");
} else {
return results.get(0);
}
}
}