Achaius questions

• How to know whether Couchbase updated or inserted a record using UPSERT
• How to avoid "_class" field in documents using spring-data-elasticsearch
• How to run rake task with parameter in rspec
• How to update KSQL stream definition dynamically based on schema-registry
• How do you write a regular expression that allows the special character DOT?
• How to render nested ul list for ancestry tree view
• How to fetch only specific object inside nested field along with search query in Elasticsearch
• Cannot call method 'charAt' of undefined
• How to set focus to a textbox on page load event
• conditional check in c:if always fails

Achaius answers