jpountz commented on code in PR #13208:
URL: https://github.com/apache/lucene/pull/13208#discussion_r1537732974
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lucene/core/src/java/org/apache/lucene/index/MergeState.java:
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@@ -266,4 +266,35 @@ static PackedLongValues removeDeletes(final int maxDoc,
final Bits liveDocs) {
}
return docMapBuilder.build();
}
+
+ /**
+ * Creates a new state from an existing state with new fieldInfos and
FieldsProducer.
+ *
+ * @param state the state to be copied
+ * @param mergeFieldInfos the new field infos of the merged segment
+ * @param fieldInfos the new field infos
+ * @param fieldsProducers the new field producers
+ */
+ public MergeState(
Review Comment:
I'm not too happy with this constructor being public since it's really an
implementation detail of `PerFieldMergeState `. At the same time, I like having
the per-field-specific logic in the `.perfield` package rather than here.
I'm not sure how to fix this cleanly... my best idea at this point would be
to store all parameters of the main `MergeState` constructor on the
`MergeState` object, so that `PerFieldMergeState` can then call this
constructor again, wrapping codec readers with a `FilterCodecReader` that only
exposes a subset of fields?
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