huaxingao commented on code in PR #15977:
URL: https://github.com/apache/iceberg/pull/15977#discussion_r3197990431
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api/src/main/java/org/apache/iceberg/expressions/Literal.java:
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@@ -71,6 +71,18 @@ static Literal<BigDecimal> of(BigDecimal value) {
return new Literals.DecimalLiteral(value);
}
+ /**
+ * Returns a sentinel literal representing an explicit null default value.
Review Comment:
added an explicit guard in `Expressions.predicate(Operation, String,
Literal<T>)` that rejects NullLiteral at predicate construction `("Invalid
expression literal: null, use isNull or notNull instead")`, plus a test.
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