davisusanibar commented on code in PR #35570:
URL: https://github.com/apache/arrow/pull/35570#discussion_r1313527263
##########
docs/source/java/dataset.rst:
##########
@@ -159,6 +157,26 @@ Or use shortcut construtor:
Then all columns will be emitted during scanning.
+Projection (Produce New Columns) and Filters
+============================================
+
+User can specify projections (new columns) or filters in ScanOptions. For
example:
+
+.. code-block:: Java
+
+ ByteBuffer substraitExtendedExpressions = ...;
Review Comment:
Added
##########
java/dataset/src/main/java/org/apache/arrow/dataset/scanner/ScanOptions.java:
##########
@@ -69,4 +74,77 @@ public Optional<String[]> getColumns() {
public long getBatchSize() {
return batchSize;
}
+
+ public Optional<ByteBuffer> getSubstraitExpressionProjection() {
+ return substraitExpressionProjection;
+ }
+
+ public Optional<ByteBuffer> getSubstraitExpressionFilter() {
+ return substraitExpressionFilter;
+ }
Review Comment:
Changed
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