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java.lang.Objectorg.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner
org.apache.hadoop.hbase.io.hfile.HFileReaderV1.AbstractScannerV1
org.apache.hadoop.hbase.io.hfile.HFileReaderV1.ScannerV1
protected static class HFileReaderV1.ScannerV1
Implementation of HFileScanner
interface.
Field Summary |
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Fields inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderV1.AbstractScannerV1 |
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currBlock |
Fields inherited from class org.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner |
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blockBuffer, blockFetches, cacheBlocks, currKeyLen, currMemstoreTS, currMemstoreTSLen, currValueLen, isCompaction, pread |
Constructor Summary | |
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HFileReaderV1.ScannerV1(HFileReaderV1 reader,
boolean cacheBlocks,
boolean pread,
boolean isCompaction)
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Method Summary | |
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protected int |
blockSeek(byte[] key,
int offset,
int length,
boolean seekBefore)
Within a loaded block, seek looking for the first key that is smaller than (or equal to?) the key we are interested in. |
ByteBuffer |
getKey()
Gets a buffer view to the current key. |
String |
getKeyString()
Convenience method to get a copy of the key as a string - interpreting the bytes as UTF8. |
KeyValue |
getKeyValue()
|
ByteBuffer |
getValue()
Gets a buffer view to the current value. |
String |
getValueString()
Convenience method to get a copy of the value as a string - interpreting the bytes as UTF8. |
protected void |
loadBlock(int bloc,
boolean rewind)
|
boolean |
next()
Scans to the next entry in the file. |
boolean |
seekTo()
Positions this scanner at the start of the file. |
Methods inherited from class org.apache.hadoop.hbase.io.hfile.HFileReaderV1.AbstractScannerV1 |
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reseekTo, seekBefore, seekTo |
Methods inherited from class org.apache.hadoop.hbase.io.hfile.AbstractHFileReader.Scanner |
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assertSeeked, getReader, isSeeked, reseekTo, seekBefore, seekTo, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public HFileReaderV1.ScannerV1(HFileReaderV1 reader, boolean cacheBlocks, boolean pread, boolean isCompaction)
Method Detail |
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public KeyValue getKeyValue()
KeyValue
.public ByteBuffer getKey()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public ByteBuffer getValue()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public boolean next() throws IOException
HFileScanner
IOException
protected int blockSeek(byte[] key, int offset, int length, boolean seekBefore)
HFileReaderV1.AbstractScannerV1
blockSeek
in class HFileReaderV1.AbstractScannerV1
key
- to findseekBefore
- find the key before the exact match.
public String getKeyString()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public String getValueString()
HFileScanner
HFileScanner.seekTo(byte[])
before this method.
public boolean seekTo() throws IOException
HFileScanner
IOException
protected void loadBlock(int bloc, boolean rewind) throws IOException
loadBlock
in class HFileReaderV1.AbstractScannerV1
IOException
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