Parsers

Appearance

Foundatio ParsersExtensible Query Parser

Lucene-style query parsing with Elasticsearch and SQL support

Get Started
View on GitHub
Foundatio Parsers

Quick Example ​

Parse a query and inspect its structure:

csharp
using Foundatio.Parsers.LuceneQueries;
using Foundatio.Parsers.LuceneQueries.Visitors;

var parser = new LuceneQueryParser();
var result = parser.Parse("field:[1 TO 2]");

// Debug the AST structure
Console.WriteLine(DebugQueryVisitor.Run(result));

// Regenerate the query string
string query = GenerateQueryVisitor.Run(result);
// Output: "field:[1 TO 2]"

Build Elasticsearch queries:

csharp
using Foundatio.Parsers.ElasticQueries;

var parser = new ElasticQueryParser(c => c
    .UseMappings(client, "my-index")
    .UseFieldMap(new Dictionary<string, string> {
        { "user", "data.user.name" }
    }));

// Build an Elasticsearch Query
var query = await parser.BuildQueryAsync("user:john AND status:active");

// Build aggregations
var aggs = await parser.BuildAggregationsAsync("terms:(status min:created max:created)");

// Build sort
var sort = await parser.BuildSortAsync("-created +name");