Package com.lancedb.lance.spark.read

Class LanceCountStarPartitionReader

java.lang.Object

com.lancedb.lance.spark.read.LanceCountStarPartitionReader

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.spark.sql.connector.read.PartitionReader<org.apache.spark.sql.vectorized.ColumnarBatch>

public class LanceCountStarPartitionReader
extends Object
implements org.apache.spark.sql.connector.read.PartitionReader<org.apache.spark.sql.vectorized.ColumnarBatch>

Partition reader for pushed down aggregates. This reader computes the aggregate result directly on the Lance dataset.

Constructor Summary

Constructors

Constructor	Description
LanceCountStarPartitionReader(LanceInputPartition inputPartition)

Method Summary

Modifier and Type	Method	Description
void	close()
org.apache.spark.sql.vectorized.ColumnarBatch	get()
boolean	next()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.spark.sql.connector.read.PartitionReader

currentMetricsValues

Constructor Details

LanceCountStarPartitionReader

public LanceCountStarPartitionReader(LanceInputPartition inputPartition)

Method Details

next

public boolean next()
             throws IOException

Specified by:

next in interface org.apache.spark.sql.connector.read.PartitionReader<org.apache.spark.sql.vectorized.ColumnarBatch>

Throws:

IOException

get

public org.apache.spark.sql.vectorized.ColumnarBatch get()

Specified by:

get in interface org.apache.spark.sql.connector.read.PartitionReader<org.apache.spark.sql.vectorized.ColumnarBatch>

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException