sanel commented on a change in pull request #2069:
URL: https://github.com/apache/drill/pull/2069#discussion_r429577212
##########
File path:
contrib/format-excel/src/main/java/org/apache/drill/exec/store/excel/ExcelBatchReader.java
##########
@@ -420,15 +510,57 @@ private void addColumnToArray(TupleWriter rowWriter,
String name, TypeProtos.Min
}
}
+ private void addMetadataWriters() {
+ for (String colName : IMPLICIT_STRING_COLUMN_NAMES) {
+ addMetadataColumnsToArray(rowWriter, colName, MinorType.VARCHAR);
+ }
+ for (String colName : IMPLICIT_TIMESTAMP_COLUMN_NAMES) {
+ addMetadataColumnsToArray(rowWriter, colName, MinorType.TIMESTAMP);
+ }
+ }
+
+ private void addMetadataColumnsToArray(TupleWriter rowWriter, String name,
MinorType type) {
+ int index = rowWriter.tupleSchema().index(name);
+ if (index == -1) {
+ ColumnMetadata colSchema = MetadataUtils.newScalar(name, type,
TypeProtos.DataMode.OPTIONAL);
+ colSchema.setBooleanProperty(ColumnMetadata.EXCLUDE_FROM_WILDCARD, true);
+ index = rowWriter.addColumn(colSchema);
+ } else {
+ return;
+ }
+ metadataColumnWriters.add(rowWriter.scalar(index));
+ }
+
+ private void writeMetadata() {
+ for (int i = 0; i < metadataColumnWriters.size(); i++) {
+ if (i < IMPLICIT_STRING_COLUMN_NAMES.size()) {
Review comment:
Why just don't say something like:
```java
int n = i - IMPLICIT_STRING_COLUMN_NAMES.size();
if (n < 0) {
...
} else {
...
... = dateMetadata.get(IMPLICIT_TIMESTAMP_COLUMN_NAMES.get(n);
...
}
```
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