Quaero 0.1.0
dotnet add package Quaero --version 0.1.0
NuGet\Install-Package Quaero -Version 0.1.0
<PackageReference Include="Quaero" Version="0.1.0" />
paket add Quaero --version 0.1.0
#r "nuget: Quaero, 0.1.0"
// Install Quaero as a Cake Addin #addin nuget:?package=Quaero&version=0.1.0 // Install Quaero as a Cake Tool #tool nuget:?package=Quaero&version=0.1.0
Quaero
A small query language that can transform queries into system-specific filters.
Quaero is designed to be web-friendly by using letter-based operators instead of symbols. It's very similar to Microsoft Graph (OData) filters, with a few minor differences:
- Infix
not
operators - Infix function operators
See example queries for some examples.
This repository contains translation implementations for Microsoft Graph and Active Directory (LDAP) filters, as well as in-memory predicates.
Supported operators
The language supports a wide range of operators supported by most filter/query languages.
Equality operators
- Equals (
eq
) - Not equals (
ne
) - Logical negation (
not
) - In (
in
)
Relational operators
- Less than (
lt
) - Greater than (
gt
) - Less than or equal to (
le
) - Greater than or equal to (
ge
)
Conditional operators
- And (
and
) - Or (
or
)
Functions
- Starts with (
startsWith
) - Ends with (
endsWith
)
Example queries
Quaero | Microsoft Graph | LDAP |
---|---|---|
age gt 42 |
age gt 42 |
(age>=43) |
age ge 42 |
age ge 42 |
(age>=42) |
age lt 42 |
age lt 42 |
(age<=41) |
age le 42 |
age le 42 |
(age<=42) |
name eq 'John' |
name eq 'John' |
(name=John) |
name not eq 'John' |
not(name eq 'John')' |
(!(name=John)) |
department in ('Retail', 'Sales') |
department in ('Retail', 'Sales') |
(\|(department=Retail)(department=Sales)) |
isRead eq false |
isRead eq false |
(isRead=FALSE) |
mail endsWith 'outlook.com' |
endsWith(mail, 'outlook.com') |
(mail=*outlook.com) |
parent ne null |
parent ne null |
(parent=*) |
id eq '275e50ae-ceb8-4f33-9e68-b3b9dc87ea68' |
id eq '275e50ae-ceb8-4f33-9e68-b3b9dc87ea68' |
(id=\AE\50\5E\27\B8\CE\33\4F\9E\68\B3\B9\DC\87\EA\68) |
Usage
Either parse a filter expression from a string using Filter.Parse
or Filter.TryParse
:
Filter filter = Filter.Parse("age gt 42");
Or manually construct a filter expression using the factory methods on the Filter
class:
Filter filter = Filter.GreaterThan("age", 42);
Once the filter has been successfully parsed, it can be optimized by calling the Optimize
extension method. This will take care of removing redundancies and shortening the resulting query.
To transform the query into an LDAP filter, reference the Quaero.Ldap
package and call the ToLdapFilter
method on it:
string result = filter.ToLdapFilter();
For Microsoft Graph, reference the Quaero.MicrosoftGraph
package and call ToMicrosoftGraphFilter
on the filter:
string result = filter.ToMicrosoftGraphFilter();
If you want to evaluate a filter in-memory, you can call the ToPredicate<T>
method on it:
record Person(string Name, int Age);
Func<Person, bool> predicate = filter.ToPredicate<Person>();
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. |
.NET Core | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
.NET Standard | netstandard2.0 is compatible. netstandard2.1 was computed. |
.NET Framework | net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
MonoAndroid | monoandroid was computed. |
MonoMac | monomac was computed. |
MonoTouch | monotouch was computed. |
Tizen | tizen40 was computed. tizen60 was computed. |
Xamarin.iOS | xamarinios was computed. |
Xamarin.Mac | xamarinmac was computed. |
Xamarin.TVOS | xamarintvos was computed. |
Xamarin.WatchOS | xamarinwatchos was computed. |
-
.NETStandard 2.0
- Superpower (>= 3.0.0)
NuGet packages (2)
Showing the top 2 NuGet packages that depend on Quaero:
Package | Downloads |
---|---|
Quaero.MicrosoftGraph
Package Description |
|
Quaero.Ldap
Package Description |
GitHub repositories
This package is not used by any popular GitHub repositories.
Version | Downloads | Last updated |
---|---|---|
0.1.0 | 329 | 11/2/2023 |