public final @NonNull AbstractTokensTaskTaggerSnapshot<TState> translateTo(
@NonNull DocumentSnapshot targetSnapshot) {
Parameters.notNull("targetSnapshot", targetSnapshot);
if (targetSnapshot.equals(snapshot)) {
return this;
}
if (!targetSnapshot.getVersionedDocument().equals(snapshot.getVersionedDocument())) {
throw new IllegalArgumentException("The target snapshot is not from the same document.");
}
if (targetSnapshot.getVersion().getVersionNumber() < snapshot.getVersion().getVersionNumber()) {
throw new UnsupportedOperationException(
"The target snapshot is from an earlier version of the document.");
}
return translateToImpl(targetSnapshot);
}
@Override
public Iterable<TaggedPositionRegion<TokenTag<Token>>> getTags(
NormalizedSnapshotPositionRegionCollection regions) {
Parameters.notNull("regions", regions);
if (regions.isEmpty()) {
return Collections.emptyList();
}
DocumentSnapshot requestedSnapshot = regions.get(0).getSnapshot();
if (!requestedSnapshot.equals(snapshot)) {
throw new UnsupportedOperationException(
"This tagger snapshot only supports requests from the same document.");
}
int startOffset = regions.get(0).getStart().getOffset();
int endOffset = regions.get(regions.size() - 1).getEnd().getOffset();
return getHighlights(startOffset, endOffset);
}