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Introduction

Last Updated: Sep 09, 2021

OpenSearch supports Cava-based plug-ins only for exclusive applications.

Overview

Cava is an efficient programming language that is developed by the OpenSearch engine team based on the low-level virtual machine (LLVM) project. Cava uses the syntax similar to that of Java and can achieve equivalent performance as C++. Cava is an object-oriented programming language. It supports just-in-time (JIT) compilation and various security checks to ensure more robust programs.

You can use Cava and the Cava libraries that are provided by OpenSearch to design a dedicated sort plug-in in OpenSearch. A Cava-based sort plug-in has the following benefits compared with the expressions that are supported by OpenSearch:

  • More diversified custom designs: Cava allows you to customize a sort plug-in by using more diversified syntax. For example, you can use for loops and define functions and classes based on your business requirements.

  • Easier to maintain: A Cava-based sort plug-in is more readable than expressions and easier to maintain.

  • Easier to learn: Cava uses the syntax similar to that of Java. If you are familiar with Java, you can understand and use Cava for development with ease. This reduces learning costs.

The following topics describe the syntax of Cava and the Cava libraries that are provided by OpenSearch.