ibessonov commented on code in PR #6377:
URL: https://github.com/apache/ignite-3/pull/6377#discussion_r2260430942
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modules/storage-page-memory/src/main/java/org/apache/ignite/internal/storage/pagememory/index/sorted/comparator/JitComparatorGenerator.java:
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@@ -359,9 +394,24 @@ private static MethodDefinition innerCompare(
Variable outerEntryBaseStart = scope.declareVariable(int.class,
"outerEntryBaseStart");
Variable innerEntryBaseStart = scope.declareVariable(int.class,
"innerEntryBaseStart");
+ Variable prefixColumns = scope.declareVariable(int.class,
"prefixColumns");
+ if (options.supportPrefixes()) {
+ // Here we calculate the number of columns that the prefix has (if
we got a prefix).
+ body.append(new IfStatement()
+ .condition(outerIsPrefix)
+ .ifTrue(new BytecodeBlock()
+ // "outerSize" is reduced by 4. This variable is
later used as an "end" of the last column.
+ .append(outerSize.set(subtract(outerSize,
constantInt(Integer.BYTES))))
Review Comment:
I will explain it
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