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java.lang.Objectorg.apache.hadoop.util.bloom.HashFunction
public final class HashFunction
Implements a hash object that returns a certain number of hashed values.
The general behavior of a key being stored in a filter,
The general behavior of a filter| Constructor Summary | |
|---|---|
HashFunction(int maxValue,
int nbHash,
int hashType)
Constructor. |
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| Method Summary | |
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void |
clear()
Clears this hash function. |
int[] |
hash(Key k)
Hashes a specified key into several integers. |
| Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public HashFunction(int maxValue,
int nbHash,
int hashType)
Builds a hash function that must obey to a given maximum number of returned values and a highest value.
maxValue - The maximum highest returned value.nbHash - The number of resulting hashed values.hashType - type of the hashing function (see Hash).| Method Detail |
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public void clear()
public int[] hash(Key k)
k - The specified key.
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