MinimalPerfectHash.LongHash

java.lang.Object
- org.h2.dev.hash.MinimalPerfectHash.LongHash

All Implemented Interfaces:

MinimalPerfectHash.UniversalHash<java.lang.Long>

Enclosing class:

MinimalPerfectHash<K>
```
public static class MinimalPerfectHash.LongHash
extends java.lang.Object
implements MinimalPerfectHash.UniversalHash<java.lang.Long>
```
A sample hash implementation for long keys.

Constructor Summary

Constructors
Constructor Description

LongHash()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`hashCode(java.lang.Long o, int index, int seed)`	Calculate the hash of the given object.

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

- Constructor Detail
  - LongHash
```
public LongHash()
```
- Method Detail
  - hashCode
```
public int hashCode(java.lang.Long o,
                    int index,
                    int seed)
```
    Description copied from interface: MinimalPerfectHash.UniversalHash
    
    Calculate the hash of the given object.
    
    Specified by:
    
    hashCode in interface MinimalPerfectHash.UniversalHash<java.lang.Long>
    
    Parameters:
    
    o - the object
    
    index - the hash function index (index 0 is used first, so the method should be very fast with index 0; index 1 and so on are only called when really needed)
    
    seed - the random seed (always the same for a hash table)
    
    Returns:
    
    the hash value