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add support for java 1.5

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This commit is contained in:
Jonathan Leibiusky
2010-11-21 19:53:43 -03:00
parent 71eb4c5b4a
commit 098de44a07
21 changed files with 485 additions and 451 deletions
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47
src/main/java/redis/clients/util/Hashing.java
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@@ -3,38 +3,37 @@ package redis.clients.util;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import redis.clients.jedis.Protocol;
public interface Hashing {
public static final Hashing MURMUR_HASH = new MurmurHash();
public static final Hashing MD5 = new Hashing() {
private MessageDigest md5 = null; // avoid recurring construction
public long hash(String key) {
return hash(key.getBytes(Protocol.UTF8));
}
private MessageDigest md5 = null; // avoid recurring construction
public long hash(byte[] key) {
if (md5 == null) {
try {
md5 = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
throw new IllegalStateException(
"++++ no md5 algorythm found");
}
}
public long hash(String key) {
return hash(SafeEncoder.encode(key));
}
md5.reset();
md5.update(key);
byte[] bKey = md5.digest();
long res = ((long) (bKey[3] & 0xFF) << 24)
| ((long) (bKey[2] & 0xFF) << 16)
| ((long) (bKey[1] & 0xFF) << 8) | (long) (bKey[0] & 0xFF);
return res;
}
public long hash(byte[] key) {
if (md5 == null) {
try {
md5 = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
throw new IllegalStateException(
"++++ no md5 algorythm found");
}
}
md5.reset();
md5.update(key);
byte[] bKey = md5.digest();
long res = ((long) (bKey[3] & 0xFF) << 24)
| ((long) (bKey[2] & 0xFF) << 16)
| ((long) (bKey[1] & 0xFF) << 8) | (long) (bKey[0] & 0xFF);
return res;
}
};
public long hash(String key);
public long hash(byte[] key);
}