Lucene Validator

The Lucene Validator is a domain-focused tool for developers, data engineers, and search admins who design and test Lucene-based queries used in Solr, Elasticsearch, or custom indexes. It focuses on syntax correctness and structural integrity rather than execution against a live index. The core value is early feedback about malformed terms, unbalanced parentheses, invalid field references, and improper escaping.
How it works conceptually: the tool tokenizes the input query, applies a lightweight Lucene grammar, and reports precise errors with positions. It supports common constructs: term queries, phrase queries, boolean operators (AND, OR, NOT), range queries, and field-restricted syntax (field:value). Optional features can suggest corrections or normalize the query.
Use cases and differentiators: pre-flight validation during query construction in IDEs or CI, guidance on field availability, and detection of ambiguous syntax. Unlike general regex checkers, this tool encapsulates Lucene semantics and interoperates with common indices.
Core features include syntax parsing, detailed error reporting with location, basic normalization, optional auto-suggestions, and outputs designed for automation.