lidavidm commented on code in PR #761:
URL: https://github.com/apache/arrow-java/pull/761#discussion_r2099090509
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vector/src/main/java/org/apache/arrow/vector/compare/RangeEqualsVisitor.java:
##########
@@ -270,35 +271,24 @@ protected boolean compareRunEndEncodedVectors(Range
range) {
RunEndEncodedVector leftVector = (RunEndEncodedVector) left;
RunEndEncodedVector rightVector = (RunEndEncodedVector) right;
- final int leftRangeEnd = range.getLeftStart() + range.getLength();
- final int rightRangeEnd = range.getRightStart() + range.getLength();
+ final RunEndEncodedVector.RangeIterator leftIterator =
+ new RangeIterator(leftVector, range.getLeftStart(), range.getLength());
+ final RunEndEncodedVector.RangeIterator rightIterator =
+ new RangeIterator(rightVector, range.getRightStart(),
range.getLength());
FieldVector leftValuesVector = leftVector.getValuesVector();
FieldVector rightValuesVector = rightVector.getValuesVector();
RangeEqualsVisitor innerVisitor = createInnerVisitor(leftValuesVector,
rightValuesVector, null);
- int leftLogicalIndex = range.getLeftStart();
- int rightLogicalIndex = range.getRightStart();
+ while (leftIterator.nextRun() | rightIterator.nextRun()) {
Review Comment:
```suggestion
while (leftIterator.nextRun() || rightIterator.nextRun()) {
```
##########
vector/src/main/java/org/apache/arrow/vector/compare/RangeEqualsVisitor.java:
##########
@@ -270,35 +271,24 @@ protected boolean compareRunEndEncodedVectors(Range
range) {
RunEndEncodedVector leftVector = (RunEndEncodedVector) left;
RunEndEncodedVector rightVector = (RunEndEncodedVector) right;
- final int leftRangeEnd = range.getLeftStart() + range.getLength();
- final int rightRangeEnd = range.getRightStart() + range.getLength();
+ final RunEndEncodedVector.RangeIterator leftIterator =
+ new RangeIterator(leftVector, range.getLeftStart(), range.getLength());
+ final RunEndEncodedVector.RangeIterator rightIterator =
+ new RangeIterator(rightVector, range.getRightStart(),
range.getLength());
FieldVector leftValuesVector = leftVector.getValuesVector();
FieldVector rightValuesVector = rightVector.getValuesVector();
RangeEqualsVisitor innerVisitor = createInnerVisitor(leftValuesVector,
rightValuesVector, null);
- int leftLogicalIndex = range.getLeftStart();
- int rightLogicalIndex = range.getRightStart();
+ while (leftIterator.nextRun() | rightIterator.nextRun()) {
Review Comment:
I suppose we already checked the vector lengths to be equal, and since we're
requiring run lengths to be equal, we don't need to check for any leftover runs
after the loop?
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