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Arrow batches fields #1925

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Overview

Added creation of Fields matching original vectors' fields. This concerns mainly nullability of vectors.

…e-types

# Conflicts:
#	src/main/java/net/snowflake/client/core/arrow/fullvectorconverters/SimpleArrowFullVectorConverter.java
…e-types

# Conflicts:
#	src/main/java/net/snowflake/client/core/arrow/fullvectorconverters/ArrowFullVectorConverter.java
#	src/main/java/net/snowflake/client/jdbc/ArrowResultChunk.java
…stamps

# Conflicts:
#	src/main/java/net/snowflake/client/core/arrow/fullvectorconverters/ArrowFullVectorConverter.java
# Conflicts:
#	src/main/java/net/snowflake/client/core/arrow/fullvectorconverters/ArrowFullVectorConverterUtil.java
#	src/main/java/net/snowflake/client/jdbc/ArrowResultChunk.java
#	src/test/java/net/snowflake/client/jdbc/ArrowBatchesIT.java
# Conflicts:
#	src/main/java/net/snowflake/client/core/arrow/fullvectorconverters/ArrowFullVectorConverterUtil.java
#	src/main/java/net/snowflake/client/jdbc/ArrowResultChunk.java
#	src/test/java/net/snowflake/client/jdbc/ArrowBatchesIT.java
@@ -58,8 +65,7 @@ protected FieldVector convertVector()
FieldVector convertedDataVector =
ArrowFullVectorConverterUtil.convert(
allocator, dataVector, context, session, timeZoneToUse, 0, valueTargetType);
// TODO: change to convertedDataVector and make all necessary changes to make it work
ListVector convertedListVector = initVector(vector.getName(), dataVector.getField());
ListVector convertedListVector = initVector(vector.getName(), convertedDataVector.getField());
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This is the line that required the whole change - if we don't keep nullability properly, mapVector will complain about it's grandchildren being nullable. As the grandchildren may be of any type, all converters were affected.

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let's add some tests to show the improvement

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Added a unit test checking if FieldTypes behave as expected when converting a MapVector

@sfc-gh-astachowski sfc-gh-astachowski marked this pull request as ready for review October 22, 2024 04:57
@sfc-gh-astachowski sfc-gh-astachowski requested a review from a team as a code owner October 22, 2024 04:57
@@ -58,8 +65,7 @@ protected FieldVector convertVector()
FieldVector convertedDataVector =
ArrowFullVectorConverterUtil.convert(
allocator, dataVector, context, session, timeZoneToUse, 0, valueTargetType);
// TODO: change to convertedDataVector and make all necessary changes to make it work
ListVector convertedListVector = initVector(vector.getName(), dataVector.getField());
ListVector convertedListVector = initVector(vector.getName(), convertedDataVector.getField());
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let's add some tests to show the improvement

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3 participants