mihaibudiu commented on code in PR #3588:
URL: https://github.com/apache/calcite/pull/3588#discussion_r1467100622
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testkit/src/main/java/org/apache/calcite/sql/test/SqlTests.java:
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@@ -265,6 +265,20 @@ public static void checkEx(@Nullable Throwable ex,
}
}
+ // Search for an IllegalStateException somewhere in the stack.
+ // These are thrown by the enumerable implementors when evaluating
+ // an expression that produces an error.
+ IllegalStateException ise = null;
+ for (Throwable x = ex; x != null; x = x.getCause()) {
+ if (x instanceof IllegalStateException) {
+ ise = (IllegalStateException) x;
+ break;
+ }
+ if (x.getCause() == x) {
Review Comment:
I have seen this pattern used elsewhere in this function, so I have followed
it. I am not sure whether a Throwable can have itself as a cause. It looks like
the Java APIs make that possible, since you can create a Throwable and assign a
cause to it later using initCause.
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