Java版的Redis (二)

import java.util.HashSet;
import java.util.LinkedList;
import java.util.TreeSet;

@SuppressWarnings("unchecked")
public class RedisDB {

private Persistence persistence = new Persistence();

private Serializer serializer = new Serializer();

private static final Object[] NULL = new Object[0];


// =================================================
// String value
// =================================================

public void Set(String key, Object value) {
persistence.put(key, serializer.marshal(value));
}

public Object Get(String key) {
return serializer.unmarshal(persistence.get(key));
}

public Object[] MGet(String... keys) {
Object[] values = new Object[keys.length];
for (int i = 0; i < keys.length; i++)
values[i] = Get(keys[i]);
return values;
}

public int Incr(String key) {
Object value = Get(key);
Integer valueRef = (value == null) 1 : (Integer) value;
Set(key, valueRef + 1);
return valueRef;
}


// =================================================
// List value
// =================================================

public void LPush(String key, Object... values) {
Object list = persistence.get(key);