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https://issues.apache.org/jira/browse/DRILL-7143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807701#comment-16807701
]
ASF GitHub Bot commented on DRILL-7143:
---------------------------------------
arina-ielchiieva commented on pull request #1726: DRILL-7143: Support default
value for empty columns
URL: https://github.com/apache/drill/pull/1726#discussion_r271269796
##########
File path:
exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/writer/AbstractFixedWidthWriter.java
##########
@@ -93,17 +112,62 @@ protected final int prepareWrite(int writeIndex) {
@Override
protected final void fillEmpties(final int writeIndex) {
final int width = width();
- final int stride = ZERO_BUF.length / width;
+ final int stride = emptyValue.length / width;
int dest = lastWriteIndex + 1;
while (dest < writeIndex) {
int length = writeIndex - dest;
length = Math.min(length, stride);
- drillBuf.setBytes(dest * width, ZERO_BUF, 0, length * width);
+ drillBuf.setBytes(dest * width, emptyValue, 0, length * width);
dest += length;
}
}
}
+ /**
+ * Base class for writers that use the Java int type as their native
+ * type. Handles common implicit conversions from other types to int.
+ */
+ public static abstract class BaseIntWriter extends BaseFixedWidthWriter {
+
+ @Override
+ public final void setLong(final long value) {
+ try {
+ // Catches int overflow. Does not catch overflow for smaller types.
+ setInt(Math.toIntExact(value));
+ } catch (final ArithmeticException e) {
+ throw InvalidConversionError.writeError(schema(), value, e);
+ }
+ }
+
+ @Override
+ public final void setDouble(final double value) {
Review comment:
Double covers Float as well?
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> Enforce column-level constraints when using a schema
> ----------------------------------------------------
>
> Key: DRILL-7143
> URL: https://issues.apache.org/jira/browse/DRILL-7143
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.16.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Major
> Fix For: 1.16.0
>
>
> The recently added schema framework enforces schema constraints at the table
> level. We now wish to add additional constraints at the column level.
> * If a column is marked as "strict", then the reader will use the exact type
> and mode from the column schema, or fail if it is not possible to do so.
> * If a column is marked as required, and provides a default value, then that
> value is used instead of 0 if a row is missing a value for that column.
> This PR may also contain other fixes the the base functional revealed through
> additional testing.
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