uros-db commented on code in PR #45643:
URL: https://github.com/apache/spark/pull/45643#discussion_r1565508312
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common/unsafe/src/main/java/org/apache/spark/sql/catalyst/util/CollationSupport.java:
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@@ -137,6 +137,76 @@ public static boolean execICU(final UTF8String l, final
UTF8String r,
}
}
+ public static class FindInSet {
+ public static int exec(final UTF8String l, final UTF8String r, final int
collationId) {
+ CollationFactory.Collation collation =
CollationFactory.fetchCollation(collationId);
+ if (collation.supportsBinaryEquality) {
+ return execBinary(l, r);
+ } else if (collation.supportsLowercaseEquality) {
+ return execLowercase(l, r);
+ } else {
+ return execICU(l, r, collationId);
+ }
+ }
+ public static String genCode(final String l, final String r, final int
collationId) {
+ CollationFactory.Collation collation =
CollationFactory.fetchCollation(collationId);
+ String expr = "CollationSupport.FindInSet.exec";
+ if (collation.supportsBinaryEquality) {
+ return String.format(expr + "Binary(%s, %s)", l, r);
+ } else if (collation.supportsLowercaseEquality) {
+ return String.format(expr + "Lowercase(%s, %s)", l, r);
+ } else {
+ return String.format(expr + "ICU(%s, %s, %d)", l, r, collationId);
+ }
+ }
+ public static int execBinary(final UTF8String l, final UTF8String r) {
+ return r.findInSet(l);
+ }
+ public static int execLowercase(final UTF8String l, final UTF8String r) {
+ return r.toLowerCase().findInSet(l.toLowerCase());
+ }
+ public static int execICU(final UTF8String l, final UTF8String r,
+ final int collationId) {
+ return CollationAwareUTF8String.findInSet(l, r, collationId);
+ }
+ }
+
+ public static class IndexOf {
Review Comment:
`CollationAwareUTF8String.indexOf` should follow the `UTF8String.indexOf`
naming, so that part is fine for example
but `CollationSupport.StringInstr` should definitely follow
`stringExpressions.StringInstr` naming
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