RegionSplitter.NumberStringSplit (Apache HBase 1.4.11 API)

java.lang.Object
- org.apache.hadoop.hbase.util.RegionSplitter.NumberStringSplit

All Implemented Interfaces:

RegionSplitter.SplitAlgorithm

Direct Known Subclasses:

RegionSplitter.DecimalStringSplit, RegionSplitter.HexStringSplit

Enclosing class:

RegionSplitter
```
public abstract static class RegionSplitter.NumberStringSplit
extends Object
implements RegionSplitter.SplitAlgorithm
```

Method Summary

Methods
Modifier and Type	Method and Description
`BigInteger`	`convertToBigInteger(byte[] row)` Returns the BigInteger represented by the byte array
`byte[]`	`convertToByte(BigInteger bigInteger)` Returns the bytes corresponding to the BigInteger
`byte[]`	`convertToByte(BigInteger bigInteger, int pad)` Returns the bytes corresponding to the BigInteger
`byte[][]`	`convertToBytes(BigInteger[] bigIntegers)` Returns an array of bytes corresponding to an array of BigIntegers
`byte[]`	`firstRow()` In HBase, the first row is represented by an empty byte array.
`byte[]`	`lastRow()` In HBase, the last row is represented by an empty byte array.
`String`	`rowToStr(byte[] row)`
`String`	`separator()`
`void`	`setFirstRow(byte[] userInput)` Set the first row
`void`	`setFirstRow(String userInput)` In HBase, the last row is represented by an empty byte array.
`void`	`setLastRow(byte[] userInput)` Set the last row
`void`	`setLastRow(String userInput)` In HBase, the last row is represented by an empty byte array.
`byte[]`	`split(byte[] start, byte[] end)` Split a pre-existing region into 2 regions.
`byte[][]`	`split(byte[] start, byte[] end, int numSplits, boolean inclusive)` Some MapReduce jobs may want to run multiple mappers per region, this is intended for such usecase.
`byte[][]`	`split(int n)` Split an entire table.
`BigInteger`	`split2(BigInteger a, BigInteger b)` Divide 2 numbers in half (for split algorithm)
`byte[]`	`strToRow(String in)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - split
```
public byte[] split(byte[] start,
           byte[] end)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    Split a pre-existing region into 2 regions.
    
    Specified by:
    
    split in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    start - first row (inclusive)
    end - last row (exclusive)
    
    Returns:
    the split row to use
  - split
```
public byte[][] split(int n)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    Split an entire table.
    
    Specified by:
    
    split in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    n - number of regions to split the table into
    
    Returns:
    array of split keys for the initial regions of the table. The length of the returned array should be numRegions-1.
  - split
```
public byte[][] split(byte[] start,
             byte[] end,
             int numSplits,
             boolean inclusive)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    Some MapReduce jobs may want to run multiple mappers per region, this is intended for such usecase.
    
    Specified by:
    
    split in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    start - first row (inclusive)
    end - last row (exclusive)
    numSplits - number of splits to generate
    inclusive - whether start and end are returned as split points
  - firstRow
```
public byte[] firstRow()
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    In HBase, the first row is represented by an empty byte array. This might cause problems with your split algorithm or row printing. All your APIs will be passed firstRow() instead of empty array.
    
    Specified by:
    
    firstRow in interface RegionSplitter.SplitAlgorithm
    
    Returns:
    your representation of your first row
  - lastRow
```
public byte[] lastRow()
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    In HBase, the last row is represented by an empty byte array. This might cause problems with your split algorithm or row printing. All your APIs will be passed firstRow() instead of empty array.
    
    Specified by:
    
    lastRow in interface RegionSplitter.SplitAlgorithm
    
    Returns:
    your representation of your last row
  - setFirstRow
```
public void setFirstRow(String userInput)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    In HBase, the last row is represented by an empty byte array. Set this value to help the split code understand how to evenly divide the first region.
    
    Specified by:
    
    setFirstRow in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    userInput - raw user input (may throw RuntimeException on parse failure)
  - setLastRow
```
public void setLastRow(String userInput)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    In HBase, the last row is represented by an empty byte array. Set this value to help the split code understand how to evenly divide the last region. Note that this last row is inclusive for all rows sharing the same prefix.
    
    Specified by:
    
    setLastRow in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    userInput - raw user input (may throw RuntimeException on parse failure)
  - strToRow
```
public byte[] strToRow(String in)
```
    Specified by:
    
    strToRow in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    in - user or file input for row
    
    Returns:
    byte array representation of this row for HBase
  - rowToStr
```
public String rowToStr(byte[] row)
```
    Specified by:
    
    rowToStr in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    row - byte array representing a row in HBase
    
    Returns:
    String to use for debug & file printing
  - separator
```
public String separator()
```
    Specified by:
    
    separator in interface RegionSplitter.SplitAlgorithm
    
    Returns:
    the separator character to use when storing / printing the row
  - setFirstRow
```
public void setFirstRow(byte[] userInput)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    Set the first row
    
    Specified by:
    
    setFirstRow in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    userInput - byte array of the row key.
  - setLastRow
```
public void setLastRow(byte[] userInput)
```
    Description copied from interface: RegionSplitter.SplitAlgorithm
    
    Set the last row
    
    Specified by:
    
    setLastRow in interface RegionSplitter.SplitAlgorithm
    
    Parameters:
    userInput - byte array of the row key.
  - split2
```
public BigInteger split2(BigInteger a,
                BigInteger b)
```
    Divide 2 numbers in half (for split algorithm)
    
    Parameters:
    a - number #1
    b - number #2
    
    Returns:
    the midpoint of the 2 numbers
  - convertToBytes
```
public byte[][] convertToBytes(BigInteger[] bigIntegers)
```
    Returns an array of bytes corresponding to an array of BigIntegers
    
    Parameters:
    bigIntegers - numbers to convert
    
    Returns:
    bytes corresponding to the bigIntegers
  - convertToByte
```
public byte[] convertToByte(BigInteger bigInteger,
                   int pad)
```
    Returns the bytes corresponding to the BigInteger
    
    Parameters:
    bigInteger - number to convert
    pad - padding length
    
    Returns:
    byte corresponding to input BigInteger
  - convertToByte
```
public byte[] convertToByte(BigInteger bigInteger)
```
    Returns the bytes corresponding to the BigInteger
    
    Parameters:
    bigInteger - number to convert
    
    Returns:
    corresponding bytes
  - convertToBigInteger
```
public BigInteger convertToBigInteger(byte[] row)
```
    Returns the BigInteger represented by the byte array
    
    Parameters:
    row - byte array representing row
    
    Returns:
    the corresponding BigInteger
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class RegionSplitter.NumberStringSplit

Method Summary

Methods inherited from class java.lang.Object

Method Detail

split

split

split

firstRow

lastRow

setFirstRow

setLastRow

strToRow

rowToStr

separator

setFirstRow

setLastRow

split2

convertToBytes

convertToByte

convertToByte

convertToBigInteger

toString