org.apache.flink.table.runtime.util

Class ResettableExternalBuffer.BufferIterator

java.lang.Object

org.apache.flink.table.runtime.util.ResettableExternalBuffer.BufferIterator

All Implemented Interfaces:

Closeable, AutoCloseable, ResettableRowBuffer.ResettableIterator, RowIterator<org.apache.flink.table.data.binary.BinaryRowData>

Enclosing class:

ResettableExternalBuffer

public class ResettableExternalBuffer.BufferIterator
extends Object
implements ResettableRowBuffer.ResettableIterator

Iterator of external buffer.

Method Summary

Modifier and Type	Method and Description
boolean	advanceNext() Advance this iterator by a single row.
void	close()
org.apache.flink.table.data.binary.BinaryRowData	getRow() Retrieve the row from this iterator.
void	reset() Re-initialize the iterator, start from begin row.

Methods inherited from class java.lang.Object

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

Method Detail

reset

public void reset()
           throws IOException

Description copied from interface: ResettableRowBuffer.ResettableIterator

Re-initialize the iterator, start from begin row.

Specified by:

reset in interface ResettableRowBuffer.ResettableIterator

Throws:

IOException

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

advanceNext

public boolean advanceNext()

Description copied from interface: RowIterator

Advance this iterator by a single row. Returns `false` if this iterator has no more rows and `true` otherwise. If this returns `true`, then the new row can be retrieved by calling RowIterator.getRow().

Specified by:

advanceNext in interface RowIterator<org.apache.flink.table.data.binary.BinaryRowData>

getRow

public org.apache.flink.table.data.binary.BinaryRowData getRow()

Description copied from interface: RowIterator

Retrieve the row from this iterator. This method is idempotent. It is illegal to call this method after [[advanceNext()]] has returned `false`.

Specified by:

getRow in interface RowIterator<org.apache.flink.table.data.binary.BinaryRowData>