lidavidm commented on code in PR #35476:
URL: https://github.com/apache/arrow/pull/35476#discussion_r1187569859
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java/vector/src/test/java/org/apache/arrow/vector/TestVectorSchemaRoot.java:
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@@ -195,29 +195,33 @@ public void testRemoveVector() {
public void testSlice() {
try (final IntVector intVector = new IntVector("intVector", allocator);
final Float4Vector float4Vector = new Float4Vector("float4Vector",
allocator)) {
- intVector.setValueCount(10);
- float4Vector.setValueCount(10);
- for (int i = 0; i < 10; i++) {
+ final int numRows = 10;
+ intVector.setValueCount(numRows);
+ float4Vector.setValueCount(numRows);
+ for (int i = 0; i < numRows; i++) {
intVector.setSafe(i, i);
float4Vector.setSafe(i, i + 0.1f);
}
- final VectorSchemaRoot original = new
VectorSchemaRoot(Arrays.asList(intVector, float4Vector));
- VectorSchemaRoot slice1 = original.slice(0, original.getRowCount());
- assertEquals(original, slice1);
+ final VectorSchemaRoot original = new
VectorSchemaRoot(Arrays.asList(intVector, float4Vector));
- VectorSchemaRoot slice2 = original.slice(0, 5);
- assertEquals(5, slice2.getRowCount());
- // validate data
- IntVector childVector1 = (IntVector) slice2.getFieldVectors().get(0);
- Float4Vector childVector2 = (Float4Vector)
slice2.getFieldVectors().get(1);
- for (int i = 0; i < 5; i++) {
- assertEquals(i, childVector1.get(i));
- assertEquals(i + 0.1f, childVector2.get(i), 0);
+ for (int sliceIndex = 0; sliceIndex < numRows; sliceIndex++) {
+ for (int sliceLength = 0; sliceIndex + sliceLength <= numRows;
sliceLength++) {
+ try (VectorSchemaRoot slice = original.slice(sliceIndex,
sliceLength)) {
+ assertEquals(sliceLength, slice.getRowCount());
+ // validate data
+ final IntVector childIntVector = (IntVector)
slice.getFieldVectors().get(0);
+ final Float4Vector childFloatVector = (Float4Vector)
slice.getFieldVectors().get(1);
+ for (int i = 0; i < sliceLength; i++) {
+ final int originalIndex = i + sliceIndex;
+ assertEquals(originalIndex, childIntVector.get(i));
+ assertEquals(originalIndex + 0.1f, childFloatVector.get(i), 0);
+ }
+ }
+ }
Review Comment:
Ack, I misunderstood - thought we were copying here
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