The bin in aerospike is a Map[String -> List] I am trying to achieve the behavior as such: Is there a way to do this atomically in Aerospike without implementing a UDF? If I read the documentation correctly, if it was a Map[String -> Map], I could have used CTX.mapKeyCreate to create the inner Map on de…
Tag: java
Why my REST api created with camel servlet doesn’t expose?
I’m currently struggling with exposing the REST api in my project using Apache Camel. When I run the project it seems to be fine in the console, but it just doesn’t work: curl http://127.0.0.1:8080/materials curl: (7) Failed to connect to 127.0.0.1 port 8080: Connection refused Here’s the po…
Resend Retrofit API call with a OneTimeWorkRequest
I am stuck and can’t get my OneTimeWorkRequest to work properly. I have got this Retrofit API call I want to resend to the backend incase there’s no network connectivity or similar on the phone. What I can’t wrap my head around is how to pass the call to the worker. I’ve got this follo…
Can we say O(n + m) is equivalent to O(n), when m is constant or when n > m
I was solving one of the leetcode problems(Longest Palindrome), where I am traversing the whole string(s) to count the frequency of each character traversing the array(charFreq) to determine whether the frequency of character is odd and doing operations accordingly. 1. Implementing using array where, 1 <= …
Compiling a function or procedure using JDBC removes all records from all_statements view
After I execute/compile a stored procedure/function, I query the all_statements view to extract the statements that were in the stored procedure/function like below: However, one of my applications run the following code: Whenever this code is run, the all_statements view is cleared. Even if I execute this sa…
RabbitMQ Streams
Using this document as a reference: https://blog.rabbitmq.com/posts/2021/07/rabbitmq-streams-first-application I have created a stream in RabbitMQ and added 1 million messages to it. I’m trying to read back all of the messages in the stream by doing the following: However, this will only print up to mes…
Stream API reduce method not working while adding elements
I am trying to add elements of int array using Stream API. But its is giving this error message. I even tried doing this I got this error message: Both of these examples were given in this Baeldung article about reduce in stream api. Answer Your issue is that Arrays.asList(int[]) doesn’t do what you thi…
How to throw an exception if required properties have either null or empty values?
I want to throw an exception when I parse the received object to a DTO and while parsing if any of the fields in DTO that I have marked as required has null values then I want to throw an exception with 400 response. I have a controller like this, I have marked a few properties in my CustomDTO as
Fetch list of forms that are belong to a specific student
I have a class of Form and Student. A student may have 0 or many forms. I set the relation between them as OneToMany. Now, I need to fetch the forms that are owned by a specific student. I have two questions at that point. How should I fetch those forms in the URL? Let’s say I want to fetch
SNMPv3 Get Request authorization problem for SNMP4J although working via net-snmp
Problem I have some troubles configuring SNMP4J as SNMPv3 manager for a simple Get-Request. SNMPv2 is working properly, both using net-snmp and SNMP4J. Setup On my local machine I have a running snmp daemon (via net-snmp). A snmpget using net-snmp works as expected: My SNMP4J implementation looks as follows: …