Axiom Query Language

Last modified 08 Apr 2021 11:15 +02:00
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Since 4.3
This functionality is available since version 4.3.

TODO: User-friendly documentation of a user-friendly language. This should NOT be a language specification, rather an user-oriented reference documentation with a dash of tutorial on top.

Axiom Query Language is a language used to query objects in midPoint repository. It is a universal language used to search for objects in the repository, filter objects, set up object references and so on. It is used in all the places where we need to look for an object.

The language closely flows midPoint data model. Names of the properties, attributes and all the data items are directly taken from midPoint data model.

This description is an attempt to provide introduction to the Axiom Query Language for the users. Some details are omitted, and there are some simplifications for clarity. Exact specification of the query language will be provided in Axiom section of this site.

The Basics

The query language is designed to allow specification of a complex queries. Yet the basic structure of the language is relative simple and easy to understand.

The query is a combination of a filter with additional parts such as paging and sorting. It is the filter part that attracts most attention.

Simples filter usually take the usual form of item operator value triple. Such as:

fullName = "John Doe"
givenName startsWith "J"
activation/effectiveStatus = "enabled"

Item Path

The item is specified by item path. In its simplest form it is a name of object property, or names of items and containers separated by slashes. Such as:



Following table summarizes common operators:

Operator Symbol Example Description



fullName = "John Doe"

Exact match. Matches if any value equals to any of specified values.


<, <=, >, >=

name < "c"

Filter matches if any values of specified property is smaller/greater then right side value. Can be used both for numeric, alphanumeric comparisons and other comparison types.


startsWith, endsWith, contains

givenName startsWith "Jo"

Matches if the item starts with, ends with or contains specified string.



. fullText "John"

Performs fulltext search (if enabled)

TODO: Anything else?


Value is usually a string literal, enclosed in double quotes. However, value may take various forms. For example, it may be a path of another item, e.g. in case when the query compares two items. The value may be also quite complex. The exact form of the value part of the filter depends on the operator.

Logic Filter

Logic filters are used to combine several sub-filters into one filter.

givenName = "John" and familyName = "Doe"

There is a usual set of logic operators:

Operator Example Description


givenName = "John" and familyName = "Doe"

All subfilters must be true.


givenName = "Bill" or nickName = "Bill"

Any of the subfilters is true.


givenName not startsWith "J" givenName != "John"

Logical negation.

Advanced Usage

Operator  Example Description



. type UserType and givenName = "John"



TODO: inOid, type

TODO: exsits? matches?

Matching Rules

primaryIdentifier =[distinguishedName] "UID=jsmith,DC=example,DC=net"

Organizational Structure

TODO: inOrg, isRoot

Motivation, Origin and Future

Axiom Query Language was developed during midScale project. The concepts of the language are based on Axiom data modeling. Axiom Query Language is replacing an old XML-based query language. The new language is more natural, user-friendly and better aligned with foundations of Axiom data modeling.

Axiom query language is a relative new development, introduced in midPoint 4.3. It is expected to be fully supported in midPoint 4.4 LTS, where it should become a recommended option. The Axiom query language should replace the XML-based language as soon as possible. The XML-based language will be still supported for several years, but it will be dropped eventually.