vespa-engine/vespa

grouping query builder and validator

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#16,871 opened on Mar 10, 2021

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 (2 comments) (0 reactions) (0 assignees)Java (4,948 stars) (561 forks)batch import
good first issue

Description

Creating a grouing query string (e.g. all( group(customer) each(output(sum(price))) ) ) can be difficult with multi-level grouping, having a UI to construct the string a la the querybuilder might help.

Can be useful as a validator, too - paste a string into a field, and auto-generate an pretty-printed view

hence both ways from structured to string and vice versa

see #16870 for implementation suggestion

Contributor guide

Tech stack
java
Domain
frontendtooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Basic understanding of Vespa's grouping languageFamiliarity with UI frameworks (e.g., React, Vue) would be helpful
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
First, review the referenced issue #16870 for implementation suggestions. Then, examine existing Vespa query builders or similar tools to understand the grouping query syntax. Consider prototyping a simple UI component that allows building grouping strings interactively and validating them. Look at Vespa's documentation for grouping syntax to ensure correctness.