diff options
Diffstat (limited to 'vespajlib/src/main/java/com/yahoo/compress/Hasher.java')
-rw-r--r-- | vespajlib/src/main/java/com/yahoo/compress/Hasher.java | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/compress/Hasher.java b/vespajlib/src/main/java/com/yahoo/compress/Hasher.java index 92a9ed26085..7a3d34eca7b 100644 --- a/vespajlib/src/main/java/com/yahoo/compress/Hasher.java +++ b/vespajlib/src/main/java/com/yahoo/compress/Hasher.java @@ -8,8 +8,25 @@ import net.openhft.hashing.LongHashFunction; * @author baldersheim */ public class Hasher { + private final LongHashFunction hasher; /** Uses net.openhft.hashing.LongHashFunction.xx3() */ public static long xxh3(byte [] data) { return LongHashFunction.xx3().hashBytes(data); } + public static long xxh3(byte [] data, long seed) { + return LongHashFunction.xx3(seed).hashBytes(data); + } + + private Hasher(LongHashFunction hasher) { + this.hasher = hasher; + } + public static Hasher withSeed(long seed) { + return new Hasher(LongHashFunction.xx3(seed)); + } + public long hash(long v) { + return hasher.hashLong(v); + } + public long hash(String s) { + return hasher.hashChars(s); + } } |