RedisTemplate Common Collection Instructions - boundSetOps (9)

       The basic configuration has been introduced in the previous " RedisTemplate Common Set Usage Instructions (1) ", now we directly introduce the use of the boundSetOps() method:

       First define a BoundSetOperations

 

BoundSetOperations boundSetOperations = redisTemplate.boundSetOps("bso");

 1.add(V... values)和members()

 Bulk add values, get all values

// view all values ​​after adding new values
boundSetOperations.add("a","b","c");
boundSetOperations.members().forEach(v -> System.out.println("View all values ​​after adding a new value: " + v));

2.scan(ScanOptions options) 

    Match to obtain key-value pairs, ScanOptions.NONE is to obtain all key-value pairs; ScanOptions.scanOptions().match("c").build() matches to obtain the key-value pairs of key map1, which cannot be fuzzy matching.

Cursor<String> cursor = boundSetOperations.scan(ScanOptions.NONE);
while (cursor.hasNext()){
      System.out.println("Iterate over all values:" + cursor.next());
}

 3.randomMember()

     get a random value

System.out.println("Get a random value:" + boundSetOperations.randomMember());

 4.randomMembers(long count)

 Get a specified number of values ​​at random

System.out.println("Randomly get the specified number of values:" + boundSetOperations.randomMembers(2));

5.distinctRandomMembers(long count)

 Get a unique random number value

System.out.println("Get the unique random number value: " + boundSetOperations.distinctRandomMembers(2));

6.diff(Collection<K> keys)

    Compare different values ​​in multiple specific keys

//The comparison here should also be a specific set name, and the name cannot exist in the set set that has already been compared, otherwise an error will be reported
Set list = new HashSet<>();
list.add("bso1");
boundSetOperations.diff(list).forEach(v -> System.out.println("Compare different elements of sets in the given set: " + v));

 7.diff(K key)

 Compare different values ​​in 2 specific keys

boundSetOperations.diff("bso2").forEach(v -> System.out.println("Compare different elements of the given set: " + v));

8.diffAndStore(Collection<K> keys, K destKey)和diffAndStore(K keys, K destKey)

 Compare different values ​​in keys and store

// Compare different sets and store
boundSetOperations.diffAndStore("bso2","bso3");
redisTemplate.opsForSet().members("bso3").forEach(v -> System.out.println("Compare different sets and store: " + v));

9.intersect(Collection<K> keys)和intersect(K key)

 Compare same values ​​in keys

// Compare the same values ​​in the given collection
boundSetOperations.intersect("bso2").forEach(v -> System.out.println("Compare the same values ​​in the given set: " + v));
boundSetOperations.intersect(list).forEach(v -> System.out.println("Compare the same values ​​in the given set:" + v));

10.intersectAndStore(Collection<K> keys, K destKey)和intersectAndStore(K key, K destKey)

  Compare the same value in the key and store

// Compare the same values ​​in the given collection and store
boundSetOperations.intersectAndStore("bso3","bso4");
redisTemplate.opsForSet().members("bso4").forEach(v -> System.out.println("Compare the same elements of the given set: " + v));

 11.union(Collection<K> keys)和union(K key)

  Combine all values ​​in a specific key

// combine all values ​​in the given collection
 boundSetOperations.union("bso2").forEach(v -> System.out.println("Union all values ​​in the given set: " + v));
boundSetOperations.union(list).forEach(v -> System.out.println("Merge all values ​​in the given set:" + v));

12. unionAndStore ( Collection < K > keys,  K  destKey) 和unionAndStore ( K  key,  K  destKey)

      Combine and store all values ​​in a specific key

boundSetOperations.unionAndStore("bso3","bso5");
redisTemplate.opsForSet().members("bso5").forEach(v -> System.out.println("Merge all values ​​in the given set: " + v));

 13.move(K destKey, V value)

    transfer value to a specific key

//Move the value in the collection to another collection
boolean moveSuc = boundSetOperations.move("bso6","a");
System.out.println("Whether it is successful to move the value in the collection to another collection:" + moveSuc);
redisTemplate.opsForSet().members("bso6").forEach(v -> System.out.println("Move the values ​​in the set to another set:" + v));
boundSetOperations.members().forEach(v -> System.out.println("Move the value in the set to the remaining value of the original set in another set:" + v));

14.pop()

     Pop the values ​​in the collection

// pop the value from the collection
Object p = boundSetOperations.pop();
System.out.println("Pop up the value in the collection: " + p);
boundSetOperations.members().forEach(v -> System.out.println("Pop up the values ​​in the set and the remaining values ​​in the original set:" + v));

15.remove(Object... values)

     Remove elements in batches

// remove specific element
long removeCount = boundSetOperations.remove("c");
System.out.println("Remove the number of specific elements:" + removeCount);
boundSetOperations.members().forEach(v -> System.out.println("Remaining value of the original set after removing the specified number of elements:" + v));