initial draft contract for Redis sorted sets

spring-datastore-redis/src/main/java/org/springframework/datastore/redis/util/DefaultRedisSortedSet.java

@@ -0,0 +1,177 @@
+/*
+ * Copyright 2010 the original author or authors.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.datastore.redis.util;
+
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.List;
+import java.util.SortedSet;
+
+import org.springframework.datastore.redis.connection.RedisCommands;
+
+/**
+ * Default implementation for {@link RedisSortedSet}.
+ * 
+ * @author Costin Leau
+ */
+class DefaultRedisSortedSet extends AbstractRedisCollection implements RedisSortedSet {
+
+	private class DefaultRedisSortedSetIterator extends RedisIterator {
+
+		public DefaultRedisSortedSetIterator(Iterator<String> delegate) {
+			super(delegate);
+		}
+
+		@Override
+		protected void removeFromRedisStorage(String item) {
+			DefaultRedisSortedSet.this.remove(item);
+		}
+	}
+
+	public DefaultRedisSortedSet(String key, RedisCommands commands) {
+		super(key, commands);
+	}
+
+	@Override
+	public RedisSortedSet intersectAndStore(String destKey, RedisSet... sets) {
+		return null;
+	}
+
+	@Override
+	public List<String> range(int start, int end) {
+		return null;
+	}
+
+	@Override
+	public List<String> rangeByScore(int start, int end) {
+		return null;
+	}
+
+	@Override
+	public RedisSortedSet trim(int start, int end) {
+		return null;
+	}
+
+	@Override
+	public RedisSortedSet trimByScore(int start, int end) {
+		return null;
+	}
+
+	@Override
+	public RedisSortedSet unionAndStore(String destKey, RedisSet... sets) {
+		return null;
+	}
+
+	@Override
+	public String getKey() {
+		return null;
+	}
+
+	@Override
+	public boolean add(String e) {
+		return false;
+	}
+
+	@Override
+	public boolean addAll(Collection<? extends String> c) {
+		return false;
+	}
+
+	@Override
+	public void clear() {
+	}
+
+	@Override
+	public boolean contains(Object o) {
+		return false;
+	}
+
+	@Override
+	public boolean containsAll(Collection<?> c) {
+		return false;
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return false;
+	}
+
+	@Override
+	public Iterator<String> iterator() {
+		return null;
+	}
+
+	@Override
+	public boolean remove(Object o) {
+		return false;
+	}
+
+	@Override
+	public boolean removeAll(Collection<?> c) {
+		return false;
+	}
+
+	@Override
+	public boolean retainAll(Collection<?> c) {
+		return false;
+	}
+
+	@Override
+	public int size() {
+		return 0;
+	}
+
+	@Override
+	public Object[] toArray() {
+		return null;
+	}
+
+	@Override
+	public <T> T[] toArray(T[] a) {
+		return null;
+	}
+
+	@Override
+	public Comparator<? super String> comparator() {
+		return null;
+	}
+
+	@Override
+	public String first() {
+		return null;
+	}
+
+	@Override
+	public SortedSet<String> headSet(String toElement) {
+		return null;
+	}
+
+	@Override
+	public String last() {
+		return null;
+	}
+
+	@Override
+	public SortedSet<String> subSet(String fromElement, String toElement) {
+		return null;
+	}
+
+	@Override
+	public SortedSet<String> tailSet(String fromElement) {
+		return null;
+	}
+}

spring-datastore-redis/src/main/java/org/springframework/datastore/redis/util/RedisSortedSet.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2010 the original author or authors.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.datastore.redis.util;
+
+import java.util.List;
+import java.util.SortedSet;
+
+/**
+ * Redis extension for the {@link SortedSet} contract. Supports {@link SortedSet} specific
+ * operations backed by Redis commands.
+ * 
+ * @author Costin Leau
+ */
+public interface RedisSortedSet extends RedisCollection, SortedSet<String> {
+
+	RedisSortedSet intersectAndStore(String destKey, RedisSet... sets);
+
+	RedisSortedSet unionAndStore(String destKey, RedisSet... sets);
+
+	List<String> range(int start, int end);
+
+	List<String> rangeByScore(int start, int end);
+
+	RedisSortedSet trim(int start, int end);
+
+	RedisSortedSet trimByScore(int start, int end);
+}