UUIDRangeSplitter (org.pipecraft.pipes:pipes-core 0.9 API)

java.lang.Object
- org.pipecraft.infra.math.UUIDRangeSplitter

```
public class UUIDRangeSplitter
extends Object
```
Splits the UUID value range into K equal sized continuous shards, and returns the thresholds. Also allows determining the shard index given a UUID. The UUID space is assumed to have all letter case representations, but a single UUID is assumed to be consistent with regards to letter case. We assume plain string ordering, as defined by Java's String comparator. This class is useful for sharding.

Author:

Eyal Schneider

- Constructor Summary
  
  Constructors
  Constructor Description
  
  UUIDRangeSplitter(int shardsCount)
  Constructor
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  int getShardFor(String uuid)
  Finds the shard corresponding to a given UUID
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UUIDRangeSplitter
```
public UUIDRangeSplitter(int shardsCount)
```
    Constructor
    
    Parameters:
    
    shardsCount - The required number of shards. Must be positive.
- Method Detail
  - getShardFor
```
public int getShardFor(String uuid)
```
    Finds the shard corresponding to a given UUID
    
    Parameters:
    
    uuid - The UUID. Must have a valid format, otherwise results are unpredictable.
    
    Returns:
    
    The shard index, as an integer between 0 and shardsCount-1.