Expression language

Use Expression Language to build conditional expressions and make your pipelines more flexible.

This document describes a compact and safe boolean expression language designed for evaluating runtime context within pipeline configurations.

Expressions written in this language are evaluated to either true or false. The language supports the use of variables, literals, comparison operators, logical operations, grouping of expressions, and a set of simple functions to enable flexible and precise condition evaluation.

Where is Expression Language used ?

Expression language is currently being used in the following:

• Dynamic step condition

• Pipeline triggers condition

例

• (var_1 > 100 && var_1 <= 200) || var_2 == "ok" && var_3 == true

• glob(var_1, "feature/*") && var_2 != "ok"

Expression Form

• Must evaluate to a boolean (true or false).

• Non-boolean results (e.g., "hello world") are invalid.

Literals

• String: "text"

• Number: 42, 3.14

• Boolean: true, false

• null: Not supported. Use the string "null" if required (for example, value == "null").

Variables

• Refer to variables directly by name (no $ prefix).

演算子

• == — Equality

• != — Inequality

• && — Logical AND

• || — Logical OR

• ! — Logical NOT

• () — Grouping

• >, >=, <, <= Comparison operators

関数