rdblue commented on a change in pull request #749: Convert Spark In filter to
iceberg IN Expression
URL: https://github.com/apache/incubator-iceberg/pull/749#discussion_r371382914
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File path: spark/src/main/java/org/apache/iceberg/spark/SparkFilters.java
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@@ -122,11 +122,7 @@ public static Expression convert(Filter filter) {
case IN:
In inFilter = (In) filter;
- Expression in = alwaysFalse();
- for (Object value : inFilter.values()) {
- in = or(in, equal(inFilter.attribute(), convertLiteral(value)));
- }
- return in;
+ return in(inFilter.attribute(), inFilter.values());
Review comment:
The values cannot contain null. It is not allowed when you [create the `in`
expression](https://github.com/apache/incubator-iceberg/blob/master/api/src/main/java/org/apache/iceberg/expressions/Expressions.java#L191).
There's a secondary check when [creating a
literal](https://github.com/apache/incubator-iceberg/blob/master/api/src/main/java/org/apache/iceberg/expressions/Literals.java#L59)
as well.
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