Sh-Zh-7 opened a new pull request, #12199:
URL: https://github.com/apache/iotdb/pull/12199
For single row interface, you can call `row.getTime()` to get the timestamp
value of current row.
```java
@Override
public Object transform(Row row) throws Exception {
return row.getTime();
}
```
For batch interface, **the last column is the time column**, use
`.getLongs()` to acquire the timestamp values of all rows.
```java
@Override
public void transform(Column[] columns, ColumnBuilder builder) throws
Exception {
long[] timestamps = columns[columns.size() - 1].getLongs();
int count = columns[0].getPositionCount();
for (int i = 0; i < count; i++) {
builder.writeLong(timestamps[i]);
}
}
```
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