mwm-conditionals.md

MONAI Deploy Workflow Manager Requirements

Overview

The MONAI Workflow Manager Workflow spec can have conditional statements this is further documentation around conditional statements.

EQUALS Operator '=='

Examples:

'F' == 'F' = true

'F' == 'B' = false

GREATER THAN Operator '>' GREATER OR EQUAL TOO Operator '>=' "=>"

Examples:

'5' > '1' = true

'5' > '1' = false

'5' >= '5' = true

'5' > 'lucy' = will cause an error comparing value that isn't a number

LESS THAN Operator '<' LESS OR EQUAL TOO Operator '<=' "=<"

Examples:

'1' < '5' = true

'1' < '5' = false

'5' <= '5' = true

'5' < 'lucy' = will cause an error comparing value that isn't a number

NOT EQUALS Operator '!='

Examples:

'F' != 'F' = false

'F' != 'B' = true

AND Operator 'AND' / OR Operator 'OR'

Examples:

The AND/OR Operator allows joining multiple statements together

'1' < '5' OR 'F' == 'B' = Left hand side of the OR statement evaluates to true so result will be true

'1' < '5' AND 'F' == 'B' = Right hand side of the AND statement evaluators to false so both sides of AND statement are false and overall statement is false.

This can be used with brackets also for logical priority...

"('TRUE' == 'TRUE' OR 'TRUE' == 'TRUE' OR 'TRUE' == 'TRUE') OR ('TRUE' == 'TRUE' OR 'TRUE' == 'TRUE')" = this statement will equal true.

CONTAINS Operator 'CONTAINS' and Arrays '[ ]'

Examples:

'lillie' CONTAINS [“jack”, “lillie”, “neil”] = true

[“jack”, “lillie”, “neil”] contains 'lillie' = true

[“jack”, “lucy”, “neil”] contains 'lillie' = false

The item array can be contained on either side of the conditional.

NOT_CONTAINS Operator 'NOT_CONTAINS'

Examples:

'lillie' NOT_CONTAINS [“jack”, “lillie”, “neil”] = false

[“jack”, “lillie”, “neil”] not_contains 'lillie' = true

[“jack”, “lucy”, “neil”] contains 'lillie' = false

The item array can be contained on either side of the conditional.