Package org.apache.iceberg.flink.source
Class DataIterator<T>
- java.lang.Object
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- org.apache.iceberg.flink.source.DataIterator<T>
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- Type Parameters:
T
- is the output data type returned by this iterator.
- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,java.util.Iterator<T>
,CloseableIterator<T>
@Internal public class DataIterator<T> extends java.lang.Object implements CloseableIterator<T>
Flink data iterator that readsCombinedScanTask
into aCloseableIterator
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Constructor Summary
Constructors Constructor Description DataIterator(FileScanTaskReader<T> fileScanTaskReader, CombinedScanTask task, FileIO io, EncryptionManager encryption)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
boolean
currentFileHasNext()
int
fileOffset()
boolean
hasNext()
T
next()
long
recordOffset()
void
seek(int startingFileOffset, long startingRecordOffset)
(startingFileOffset, startingRecordOffset) points to the next row that reader should resume from.
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Constructor Detail
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DataIterator
public DataIterator(FileScanTaskReader<T> fileScanTaskReader, CombinedScanTask task, FileIO io, EncryptionManager encryption)
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Method Detail
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seek
public void seek(int startingFileOffset, long startingRecordOffset)
(startingFileOffset, startingRecordOffset) points to the next row that reader should resume from. E.g., if the seek position is (file=0, record=1), seek moves the iterator position to the 2nd row in file 0. When next() is called after seek, 2nd row from file 0 should be returned.
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hasNext
public boolean hasNext()
- Specified by:
hasNext
in interfacejava.util.Iterator<T>
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currentFileHasNext
public boolean currentFileHasNext()
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close
public void close() throws java.io.IOException
- Specified by:
close
in interfacejava.lang.AutoCloseable
- Specified by:
close
in interfacejava.io.Closeable
- Throws:
java.io.IOException
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fileOffset
public int fileOffset()
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recordOffset
public long recordOffset()
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