aerospike 中的 listoperation.pop 删除完整列表，而不是从特定索引中删除项目

Question

ListOperation.pop(binName, metaInfo.getIndex())

任何人都可以帮忙解决这个问题吗？我正在使用默认写入策略

按照文档创建列表弹出操作。 服务器返回指定索引处的项目并从列表箱中删除项目。

公共静态操作 pop(String binName, int index, CTX...ctx) {

return CDT.createOperation(POP, Operation.Type.CDT_MODIFY, binName, ctx, index);

}

Answer 1

Key myKey = new Key("test", "testset", "mykey");
String binName = "myList";
ListPolicy lPolicy = new ListPolicy(ListOrder.UNORDERED, ListWriteFlags.DEFAULT);
client.delete(null,myKey);  //Start clean for test

client.operate(null, myKey, ListOperation.append(lPolicy, binName, Value.get(10))); 
client.operate(null, myKey, ListOperation.append(lPolicy, binName, Value.get(5))); 
client.operate(null, myKey, ListOperation.append(lPolicy, binName, Value.get(15))); 
client.operate(null, myKey, ListOperation.append(lPolicy, binName, Value.get(20))); 

System.out.println("My List: "+ client.get(null, myKey)); 

client.operate(null, myKey, ListOperation.pop(binName, 1) );  //Pop at index 1, (value = 5)

System.out.println("My List after pop: "+ client.get(null, myKey)); 

输出：

My List: (gen:4),(exp:428342885),(bins:(myList:[10, 5, 15, 20]))
My List after pop: (gen:5),(exp:428342885),(bins:(myList:[10, 15, 20]))