chenjunjiedada commented on code in PR #7362:
URL: https://github.com/apache/iceberg/pull/7362#discussion_r1189745123
##########
flink/v1.17/flink/src/main/java/org/apache/iceberg/flink/source/ScanContext.java:
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@@ -149,12 +152,26 @@ private void validate() {
}
Preconditions.checkArgument(
- !(startTag != null && startSnapshotId() != null),
- "START_SNAPSHOT_ID and START_TAG cannot both be set.");
+ atMostOneNonNull(startSnapshotId(), startTag,
startSnapshotTimestamp()),
+ "Cannot specify more than one of start-snapshot-id, start-tag, or
start-snapshot-timestamp.");
Preconditions.checkArgument(
- !(endTag != null && endSnapshotId() != null),
- "END_SNAPSHOT_ID and END_TAG cannot both be set.");
+ atMostOneNonNull(endSnapshotId(), endTag, endSnapshotTimestamp()),
+ "Cannot specify more than one of end-snapshot-id, end-tag, or
end-snapshot-timestamp.");
+ }
+
+ private static boolean atMostOneNonNull(Object... objects) {
+ int count = 0;
+ for (Object obj : objects) {
+ if (obj != null) {
+ count++;
+ }
+
+ if (count > 1) {
+ return false;
+ }
+ }
+ return true;
Review Comment:
nit: blank line after block.
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