Expression Constraint Language

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Symbol

Name

VersionNotes
|Pipe1.0Used on either side of a concept's term for human readability
*Any1.0Retrieves all concepts in the substrate
^Member of1.0Retrieves the referencedComponentId of all (active) members of a reference set (or set of reference sets)
^ [ A, B]Member of (with field selection)2.0Retrieves the values of fields A and B of all (active) members of a reference set (or set of reference sets) that match the included Member filters (if applicable)

<

Descendant of

1.0Retrieves all descendants (subtypes) of the specified concept excluding the concept itself

<<

Descendant or self of

1.0Retrieves all descendants (subtypes) of the specified concept including the concept itself

<!

Child of

1.1Retrieves all children (immediate subtypes) of the specified concept excluding the concept itself

<<!

Child or self of

1.4Retrieves all children (immediate subtypes) of the specified concept including the concept itself
>Ancestor of1.0Retrieves all ancestors (supertypes) of the specified concept excluding the concept itself

>>

Ancestor or self of

1.0Retrieves all ancestors (supertypes) of the specified concept including the concept itself

>!

Parent of

1.1Retrieves all parents (immediate supertypes) of the specified concept excluding the concept itself

>>!

Parent or self of

1.4Retrieves all parents (immediate supertypes) of the specified concept including the concept itself

AND

Conjunction

1.0Retrieves the intersection of the results of each sub-expressions

OR

Disjunction

1.0Retrieves the union of the results of each sub-expressions

MINUS

Exclusion

1.0Retrieves the members of the first expression and excludes the members returned by the second expression
:Refinement1.0Used before one or more attribute-value pairs to refine the set of concepts retrieved

[1..3]

Cardinality

1.0Used to indicate the minimum and maximum number of occurrences of attributes or relationship groups

R

Reverse flag

1.0Retrieves the set of attribute values (i.e. destination concepts) of a specified attribute for a specified set of concepts

.

Dot notation

1.12Retrieves the set of attribute values (i.e. destination concepts) of a specified attribute for a specified set of concepts
/*  */Comment1.1Allows comments to be added within the text of an expression constraint
{{  }}Description filter1.5Filters the result set, by matching only on concepts which have a description with a matching term, language, type, dialect and/or acceptability
{{ D }}Description filter1.6Filters the result set, by matching only on concepts which have a description with a matching term, language, type, dialect and/or acceptability
{{ C }}Concept filter1.6Filters the result set based on the definition status, module, effectiveTime and active status of each concept
{{ M }}Member filter2.0Filters the result set based on the value of specific fields in a reference set.
{{+ HISTORY}}History supplement2.0Supplements the results with relevant inactive concepts

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