org.kududb.client

Class KuduScanner

java.lang.Object

org.kududb.client.KuduScanner

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public class KuduScanner
extends Object

Synchronous version of AsyncKuduScanner. Offers the same API but with blocking methods.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KuduScanner.KuduScannerBuilder A Builder class to build KuduScanner.

Method Summary

Modifier and Type	Method and Description
RowResultIterator	close() Closes this scanner (don't forget to call this when you're done with it!).
boolean	hasMoreRows() Tells if the last rpc returned that there might be more rows to scan.
RowResultIterator	nextRows() Scans a number of rows.

Methods inherited from class java.lang.Object

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

Method Detail

hasMoreRows

public boolean hasMoreRows()

Tells if the last rpc returned that there might be more rows to scan.

Returns:

true if there might be more data to scan, else false

nextRows

public RowResultIterator nextRows()
                           throws Exception

Scans a number of rows.

Once this method returns null once (which indicates that this Scanner is done scanning), calling it again leads to an undefined behavior.

Returns:

a list of rows.

Throws:

Exception

close

public RowResultIterator close()
                        throws Exception

Closes this scanner (don't forget to call this when you're done with it!).

Closing a scanner already closed has no effect.

Returns:

a deferred object that indicates the completion of the request

Throws:

Exception