RussellSpitzer commented on code in PR #4847:
URL: https://github.com/apache/iceberg/pull/4847#discussion_r906395431
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core/src/main/java/org/apache/iceberg/AllManifestsTable.java:
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@@ -204,4 +229,186 @@ public Iterable<FileScanTask> split(long splitSize) {
return ImmutableList.of(this); // don't split
}
}
+
+ static StaticDataTask.Row manifestFileToRow(PartitionSpec spec, ManifestFile
manifest, long referenceSnapshotId) {
+ return StaticDataTask.Row.of(
+ manifest.content().id(),
+ manifest.path(),
+ manifest.length(),
+ manifest.partitionSpecId(),
+ manifest.snapshotId(),
+ manifest.content() == ManifestContent.DATA ?
manifest.addedFilesCount() : 0,
+ manifest.content() == ManifestContent.DATA ?
manifest.existingFilesCount() : 0,
+ manifest.content() == ManifestContent.DATA ?
manifest.deletedFilesCount() : 0,
+ manifest.content() == ManifestContent.DELETES ?
manifest.addedFilesCount() : 0,
+ manifest.content() == ManifestContent.DELETES ?
manifest.existingFilesCount() : 0,
+ manifest.content() == ManifestContent.DELETES ?
manifest.deletedFilesCount() : 0,
+ ManifestsTable.partitionSummariesToRows(spec, manifest.partitions()),
+ referenceSnapshotId
+ );
+ }
+
+ private static class SnapshotEvaluator {
+
+ private final Expression boundExpr;
+
+ private SnapshotEvaluator(Expression expr, Types.StructType structType,
boolean caseSensitive) {
+ this.boundExpr = Binder.bind(structType, expr, caseSensitive);
+ }
+
+ private boolean eval(Snapshot snapshot) {
+ return new SnapshotEvalVisitor().eval(snapshot);
+ }
+
+ private class SnapshotEvalVisitor extends BoundExpressionVisitor<Boolean> {
+
+ private long snapshotId;
+ private static final boolean ROWS_MIGHT_MATCH = true;
+ private static final boolean ROWS_CANNOT_MATCH = false;
+
+ private boolean eval(Snapshot snapshot) {
+ this.snapshotId = snapshot.snapshotId();
+ return ExpressionVisitors.visitEvaluator(boundExpr, this);
+ }
+
+ @Override
+ public Boolean alwaysTrue() {
+ return ROWS_MIGHT_MATCH;
+ }
+
+ @Override
+ public Boolean alwaysFalse() {
+ return ROWS_CANNOT_MATCH;
+ }
+
+ @Override
+ public Boolean not(Boolean result) {
+ return !result;
+ }
+
+ @Override
+ public Boolean and(Boolean leftResult, Boolean rightResult) {
+ return leftResult && rightResult;
+ }
+
+ @Override
+ public Boolean or(Boolean leftResult, Boolean rightResult) {
+ return leftResult || rightResult;
+ }
+
+ @Override
+ public <T> Boolean isNull(BoundReference<T> ref) {
+ return ROWS_MIGHT_MATCH;
Review Comment:
Shouldn't this always be rows don't match if "isSnapshotRef"? Like in isNan?
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