[
https://issues.apache.org/jira/browse/DRILL-7445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16977782#comment-16977782
]
ASF GitHub Bot commented on DRILL-7445:
---------------------------------------
paul-rogers commented on pull request #1899: DRILL-7445: Create batch copier
based on result set framework
URL: https://github.com/apache/drill/pull/1899#discussion_r348105189
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/protocol/VectorContainerAccessor.java
##########
@@ -22,41 +22,83 @@
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.exec.record.BatchSchema;
+import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.record.TypedFieldId;
import org.apache.drill.exec.record.VectorContainer;
import org.apache.drill.exec.record.VectorWrapper;
import org.apache.drill.exec.record.WritableBatch;
import org.apache.drill.exec.record.selection.SelectionVector2;
import org.apache.drill.exec.record.selection.SelectionVector4;
+import org.apache.drill.shaded.guava.com.google.common.base.Preconditions;
public class VectorContainerAccessor implements BatchAccessor {
- public static class ContainerAndSv2Accessor extends VectorContainerAccessor {
+ public static class ExtendedContainerAccessor extends
VectorContainerAccessor {
private SelectionVector2 sv2;
+ private SelectionVector4 sv4;
+
+ public void setBatch(RecordBatch batch) {
+ addBatch(batch.getContainer());
+ switch (container.getSchema().getSelectionVectorMode()) {
+ case TWO_BYTE:
+ setSelectionVector(batch.getSelectionVector2());
+ break;
+ case FOUR_BYTE:
+ setSelectionVector(batch.getSelectionVector4());
+ break;
+ default:
+ break;
Review comment:
Removing the default case causes Eclipse to warn about missing case
statements. In this case, the default is for the no-SV case; saves the even
more cumbersome:
```
case NONE:
break;
default:
throw
IllegalStateException(container.getSchema().getSelectionVectorMode());
```
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> Create batch copier based on result set framework
> -------------------------------------------------
>
> Key: DRILL-7445
> URL: https://issues.apache.org/jira/browse/DRILL-7445
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.16.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Minor
> Fix For: 1.17.0
>
>
> The result set framework now provides both a reader and writer. Provide a
> copier that copies batches using this framework. Such a copier can:
> * Copy selected records
> * Copy all records, such as for an SV2 or SV4
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