Field Detail

• meta

  protected final HFileContext meta

Constructor Detail

• HFileReaderV2.EncodedScannerV2

  public HFileReaderV2.EncodedScannerV2(HFileReaderV2 reader,
                                boolean cacheBlocks,
                                boolean pread,
                                boolean isCompaction,
                                HFileContext meta)

Method Detail

• isSeeked

  public boolean isSeeked()

  Specified by:

  isSeeked in interface HFileScanner

  Overrides:

  isSeeked in class AbstractHFileReader.Scanner

  Returns:

  True is scanner has had one of the seek calls invoked; i.e. HFileScanner.seekBefore(byte[]) or HFileScanner.seekTo() or HFileScanner.seekTo(byte[]). Otherwise returns false.

• seekTo

  public boolean seekTo()
                 throws IOException

  Description copied from interface: HFileScanner
  Positions this scanner at the start of the file.

  Returns:

  False if empty file; i.e. a call to next would return false and the current key and value are undefined.

  Throws:

  IOException

• next

  public boolean next()
               throws IOException

  Description copied from interface: HFileScanner
  Scans to the next entry in the file.

  Returns:

  Returns false if you are at the end otherwise true if more in file.

  Throws:

  IOException

• getKey

  public ByteBuffer getKey()

  Description copied from interface: HFileScanner
  Gets a buffer view to the current key. You must call HFileScanner.seekTo(byte[]) before this method.

  Returns:

  byte buffer for the key. The limit is set to the key size, and the position is 0, the start of the buffer view.

• compareKey

  public int compareKey(KeyValue.KVComparator comparator,
               byte[] key,
               int offset,
               int length)

  Description copied from class: HFileReaderV2.AbstractScannerV2
  Compare the given key against the current key

  Specified by:

  compareKey in class HFileReaderV2.AbstractScannerV2

  Returns:

  -1 is the passed key is smaller than the current key, 0 if equal and 1 if greater

• getValue

  public ByteBuffer getValue()

  Description copied from interface: HFileScanner
  Gets a buffer view to the current value. You must call HFileScanner.seekTo(byte[]) before this method.

  Returns:

  byte buffer for the value. The limit is set to the value size, and the position is 0, the start of the buffer view.

• getKeyValue

  public Cell getKeyValue()

  Returns:

  Instance of KeyValue.

• getKeyString

  public String getKeyString()

  Description copied from interface: HFileScanner
  Convenience method to get a copy of the key as a string - interpreting the bytes as UTF8. You must call HFileScanner.seekTo(byte[]) before this method.

  Returns:

  key as a string

• getValueString

  public String getValueString()

  Description copied from interface: HFileScanner
  Convenience method to get a copy of the value as a string - interpreting the bytes as UTF8. You must call HFileScanner.seekTo(byte[]) before this method.

  Returns:

  value as a string

• getFirstKeyInBlock

  protected ByteBuffer getFirstKeyInBlock(HFileBlock curBlock)

  Specified by:

  getFirstKeyInBlock in class HFileReaderV2.AbstractScannerV2

• loadBlockAndSeekToKey

  protected int loadBlockAndSeekToKey(HFileBlock seekToBlock,
                          Cell nextIndexedKey,
                          boolean rewind,
                          Cell key,
                          boolean seekBefore)
                               throws IOException

  Specified by:

  loadBlockAndSeekToKey in class HFileReaderV2.AbstractScannerV2

  Throws:

  IOException

• compareKey

  public int compareKey(KeyValue.KVComparator comparator,
               Cell key)

  Specified by:

  compareKey in class HFileReaderV2.AbstractScannerV2