feat(openenum): add is_open boolean slot to enum expressions

.pre-commit-config.yaml

@@ -1,14 +1,31 @@
 default_language_version:
   python: python3
 
+# Note: the `exclude` patterns below cover `make gen-project` outputs written
+# into linkml_model/ which we do not control. Artefacts copied verbatim from the
+# LinkML generators, which emit trailing whitespace and inconsistent final
+# newlines (e.g. the bare "// " comment line in protobuf/meta.proto). Native
+# sources stay covered: model/schema/, model/docs/, linkml_files.py, etc.
+# Note: Keep the two exclude patterns in sync.
+
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
   rev: v6.0.0
   hooks:
   - id: end-of-file-fixer
+    exclude: |
+      (?x)^linkml_model/(
+        (excel|graphql|jsonld|jsonschema|owl|prefixmap|protobuf|rdf|shacl|shex|sqlddl|sqlschema)/
+        |(annotations|array|datasets|extensions|mappings|meta|types|units|validation)\.py$
+      )
   - id: check-yaml
   - id: check-toml
   - id: trailing-whitespace
+    exclude: |
+      (?x)^linkml_model/(
+        (excel|graphql|jsonld|jsonschema|owl|prefixmap|protobuf|rdf|shacl|shex|sqlddl|sqlschema)/
+        |(annotations|array|datasets|extensions|mappings|meta|types|units|validation)\.py$
+      )
 
 - repo: https://github.com/codespell-project/codespell
   rev: v2.4.1

linkml_model/annotations.py

@@ -1,5 +1,5 @@
 # Auto generated from annotations.yaml by pythongen.py version: 0.0.1
-# Generation date: 2026-05-05T18:49:09
+# Generation date: 2026-07-27T16:30:13
 # Schema: annotations
 #
 # id: https://w3id.org/linkml/annotations
@@ -55,7 +55,7 @@
 from .types import Uriorcurie
 from linkml_runtime.utils.metamodelcore import URIorCURIE
 
-metamodel_version = "1.7.0"
+metamodel_version = "1.11.0"
 version = "2.0.0"
 
 # Namespaces
@@ -126,3 +126,4 @@ class slots:
 
 slots.annotations = Slot(uri=LINKML.annotations, name="annotations", curie=LINKML.curie('annotations'),
                    model_uri=LINKML.annotations, domain=None, range=Optional[Union[dict[Union[str, AnnotationTag], Union[dict, "Annotation"]], list[Union[dict, "Annotation"]]]])
+

linkml_model/array.py

@@ -1,5 +1,5 @@
 # Auto generated from array.yaml by pythongen.py version: 0.0.1
-# Generation date: 2026-05-05T18:49:10
+# Generation date: 2026-07-27T16:30:14
 # Schema: arrays
 #
 # id: https://w3id.org/linkml/lib/arrays
@@ -55,7 +55,7 @@
 
 from .types import Integer, String
 
-metamodel_version = "1.7.0"
+metamodel_version = "1.11.0"
 version = None
 
 # Namespaces
@@ -282,3 +282,4 @@ class slots:
 
 slots.RowOrderedArray_array_linearization_order = Slot(uri=LINKML.array_linearization_order, name="RowOrderedArray_array_linearization_order", curie=LINKML.curie('array_linearization_order'),
                    model_uri=LINKML.RowOrderedArray_array_linearization_order, domain=None, range=Optional[Union[str, "ArrayLinearizationOrderOptions"]])
+

linkml_model/datasets.py

@@ -1,5 +1,5 @@
 # Auto generated from datasets.yaml by pythongen.py version: 0.0.1
-# Generation date: 2026-05-05T18:49:10
+# Generation date: 2026-07-27T16:30:15
 # Schema: datasets
 #
 # id: https://w3id.org/linkml/datasets
@@ -54,7 +54,7 @@
 from .types import Datetime, Integer, String, Uri, Uriorcurie
 from linkml_runtime.utils.metamodelcore import URI, URIorCURIE, XSDDateTime
 
-metamodel_version = "1.7.0"
+metamodel_version = "1.11.0"
 version = None
 
 # Namespaces
@@ -570,3 +570,4 @@ class slots:
 
 slots.formatDialect__quote_char = Slot(uri=DATASETS.quote_char, name="formatDialect__quote_char", curie=DATASETS.curie('quote_char'),
                    model_uri=DATASETS.formatDialect__quote_char, domain=None, range=Optional[str])
+

linkml_model/extensions.py

@@ -1,5 +1,5 @@
 # Auto generated from extensions.yaml by pythongen.py version: 0.0.1
-# Generation date: 2026-05-05T18:49:11
+# Generation date: 2026-07-27T16:30:16
 # Schema: extensions
 #
 # id: https://w3id.org/linkml/extensions
@@ -54,7 +54,7 @@
 from .types import Uriorcurie
 from linkml_runtime.utils.metamodelcore import URIorCURIE
 
-metamodel_version = "1.7.0"
+metamodel_version = "1.11.0"
 version = "2.0.0"
 
 # Namespaces
@@ -133,3 +133,4 @@ class slots:
 
 slots.extension_value = Slot(uri=LINKML.value, name="extension_value", curie=LINKML.curie('value'),
                    model_uri=LINKML.extension_value, domain=Extension, range=Union[dict, AnyValue])
+

linkml_model/graphql/meta.graphql

@@ -112,6 +112,7 @@ type AnonymousEnumExpression implements EnumExpression
     codeSetVersion: String
     pvFormula: PvFormulaOptions
     permissibleValues: [PermissibleValue]
+    isOpen: Boolean
     include: [AnonymousEnumExpression]
     minus: [AnonymousEnumExpression]
     inherits: [EnumDefinition]
@@ -708,6 +709,7 @@ type EnumDefinition implements EnumExpression
     codeSetVersion: String
     pvFormula: PvFormulaOptions
     permissibleValues: [PermissibleValue]
+    isOpen: Boolean
     include: [AnonymousEnumExpression]
     minus: [AnonymousEnumExpression]
     inherits: [EnumDefinition]
@@ -723,6 +725,7 @@ type EnumExpression
     codeSetVersion: String
     pvFormula: PvFormulaOptions
     permissibleValues: [PermissibleValue]
+    isOpen: Boolean
     include: [AnonymousEnumExpression]
     minus: [AnonymousEnumExpression]
     inherits: [EnumDefinition]

linkml_model/jsonld/meta.context.jsonld

@@ -457,6 +457,10 @@
          "@type": "xsd:boolean",
          "@id": "is_grouping_slot"
       },
+      "is_open": {
+         "@type": "xsd:boolean",
+         "@id": "is_open"
+      },
       "is_usage_slot": {
          "@type": "xsd:boolean",
          "@id": "is_usage_slot"

linkml_model/jsonld/meta.jsonld

@@ -1625,6 +1625,33 @@
       "inlined": true,
       "@type": "SlotDefinition"
     },
+    {
+      "name": "is_open",
+      "definition_uri": "https://w3id.org/linkml/is_open",
+      "description": "Whether the enumeration is open, meaning that values outside of the set of permissible values are allowed. If true, the enumeration is open and data values that are not in the set of permissible values are permitted (though they SHOULD be drawn from the permissible values if available). If false (runtime default), the enumeration is closed and data values MUST be drawn from the set of permissible values.",
+      "comments": [
+        "An open enumeration is analogous to the `allow-other=\"yes\"` construct in the OSCAL Metamodel.",
+        "When an enum is open, the permissible value set is not exhaustive - they document the advised, recommended, or expected values but allow values outside the permissible set."
+      ],
+      "in_subset": [
+        "SpecificationSubset"
+      ],
+      "from_schema": "https://w3id.org/linkml/meta",
+      "see_also": [
+        "https://pages.nist.gov/metaschema/specification/syntax/constraints/#allow-other",
+        "https://github.com/linkml/linkml/issues/127",
+        "https://github.com/linkml/linkml/pull/3712"
+      ],
+      "status": "testing",
+      "domain": "EnumExpression",
+      "slot_uri": "https://w3id.org/linkml/is_open",
+      "owner": "EnumExpression",
+      "domain_of": [
+        "EnumExpression"
+      ],
+      "range": "boolean",
+      "@type": "SlotDefinition"
+    },
     {
       "name": "enum_uri",
       "definition_uri": "https://w3id.org/linkml/enum_uri",
@@ -2955,15 +2982,20 @@
     {
       "name": "unique_keys",
       "definition_uri": "https://w3id.org/linkml/unique_keys",
-      "description": "A collection of named unique keys for this class. Unique keys may be singular or compound.",
+      "description": "A collection of named unique keys for this class. Such unique keys may be spread over several slots, which is why there are also called \"compound keys\". A unique key uniquely identifies instances of the class within a given container, meaning there cannot be two (or more) instances of the class with the same values for all the slots that make up the unique key.",
+      "comments": [
+        "Not to be confused with a \"singular unique key\", which is defined by means of the `key` slot, or with an \"identifier\", which is defined by means of the \"identifier\" slot. Compound keys, singular unique keys, and identifiers all create a unicity constraint, but singular unique keys and identifiers have additional effects that compound keys do not have.\n"
+      ],
       "in_subset": [
         "SpecificationSubset",
         "BasicSubset",
         "RelationalModelProfile"
       ],
       "from_schema": "https://w3id.org/linkml/meta",
       "see_also": [
-        "https://linkml.io/linkml/schemas/constraints.html#unique-key"
+        "https://linkml.io/linkml/schemas/constraints.html#unique-keys",
+        "linkml:key",
+        "linkml:identifier"
       ],
       "exact_mappings": [
         "http://www.w3.org/2002/07/owl#hasKey"
@@ -3941,12 +3973,12 @@
     {
       "name": "key",
       "definition_uri": "https://w3id.org/linkml/key",
-      "description": "True means that the key slot(s) uniquely identify the elements within a single container",
+      "description": "True means that the slot is the \"singular unique key\" (also known more simply as the \"key slot\") of its class. Such a slot uniquely identifies instances of the class within a single container, meaning there cannot be two (or more) instances of the class (or instances of any of its descendants) with the same value for the key slot within the container.",
       "comments": [
-        "key is inherited",
-        "a given domain can have at most one key slot (restriction to be removed in the future)",
-        "identifiers and keys are mutually exclusive.  A given domain cannot have both",
-        "a key slot is automatically required.  Keys cannot be optional"
+        "The key slot is inherited.",
+        "A domain can have at most one key slot OR one identifier slot. However a domain can have both a key slot and any number of compound keys.",
+        "A key slot is automatically required. Singular unique keys cannot be optional.",
+        "The presence of a key slot makes a class eligible for inlining as a dictionary."
       ],
       "in_subset": [
         "SpecificationSubset",
@@ -3955,7 +3987,10 @@
       ],
       "from_schema": "https://w3id.org/linkml/meta",
       "see_also": [
-        "linkml:unique_keys"
+        "https://linkml.io/linkml/schemas/constraints.html#singular-unique-keys",
+        "https://linkml.io/linkml/schemas/inlining.html",
+        "linkml:unique_keys",
+        "linkml:identifier"
       ],
       "domain": "SlotDefinition",
       "slot_uri": "https://w3id.org/linkml/key",
@@ -3970,12 +4005,13 @@
     {
       "name": "identifier",
       "definition_uri": "https://w3id.org/linkml/identifier",
-      "description": "True means that the key slot(s) uniquely identifies the elements. There can be at most one identifier or key per container",
+      "description": "True means that the slot is the identifier slot of its class. Such a slot uniquely identifies instances of the class throughout an entire document, meaning there cannot be two (or more) instances of the class (or instances of any of its descendants) with the same value for the identifier slot anywhere in the document.",
       "comments": [
-        "identifier is inherited",
-        "a key slot is automatically required.  Identifiers cannot be optional",
-        "a given domain can have at most one identifier",
-        "identifiers and keys are mutually exclusive.  A given domain cannot have both"
+        "The identifier slot is inherited.",
+        "A domain can have at most one identifier slot OR a key slot. However a domain can have both an identifier slot and any number of compound keys.",
+        "An identifier slot is automatically required. Identifiers cannot be optional.",
+        "The presence of an identifier slot makes a class eligible for inlining as a dictionary.",
+        "The presence of an identifier slot makes a class eligible for being referenced rather than inlined."
       ],
       "in_subset": [
         "SpecificationSubset",
@@ -3986,7 +4022,10 @@
       "from_schema": "https://w3id.org/linkml/meta",
       "see_also": [
         "https://en.wikipedia.org/wiki/Identifier",
-        "linkml:unique_keys"
+        "https://linkml.io/linkml/schemas/constraints.html#unique-keys",
+        "https://linkml.io/linkml/schemas/inlining.html",
+        "linkml:unique_keys",
+        "linkml:key"
       ],
       "aliases": [
         "primary key",
@@ -5504,6 +5543,13 @@
     {
       "name": "extension_value",
       "definition_uri": "https://w3id.org/linkml/extension_value",
+      "annotations": [
+        {
+          "tag": "simple_dict_value",
+          "value": true,
+          "@type": "Annotation"
+        }
+      ],
       "description": "the actual annotation",
       "from_schema": "https://w3id.org/linkml/extensions",
       "imported_from": "linkml:extensions",
@@ -5649,7 +5695,7 @@
     {
       "name": "abbreviation",
       "definition_uri": "https://w3id.org/linkml/abbreviation",
-      "description": "An abbreviation for a unit is a short ASCII string that is used in place of the full name for the unit in  contexts where non-ASCII characters would be problematic, or where using the abbreviation will enhance  readability. When a power of a base unit needs to be expressed, such as squares this can be done using  abbreviations rather than symbols (source: qudt)",
+      "description": "An abbreviation for a unit is a short ASCII string that is used in place of the full name for the unit in contexts where non-ASCII characters would be problematic, or where using the abbreviation will enhance readability. When a power of a base unit needs to be expressed, such as squares this can be done using abbreviations rather than symbols (source: qudt)",
       "from_schema": "https://w3id.org/linkml/units",
       "imported_from": "linkml:units",
       "mappings": [
@@ -7243,6 +7289,7 @@
         "code_set_version",
         "pv_formula",
         "permissible_values",
+        "is_open",
         "include",
         "minus",
         "inherits",
@@ -7268,6 +7315,7 @@
         "code_set_version",
         "pv_formula",
         "permissible_values",
+        "is_open",
         "include",
         "minus",
         "inherits",
@@ -7373,6 +7421,7 @@
         "code_set_version",
         "pv_formula",
         "permissible_values",
+        "is_open",
         "include",
         "minus",
         "inherits",
@@ -8777,7 +8826,7 @@
     {
       "name": "UnitOfMeasure",
       "definition_uri": "https://w3id.org/linkml/UnitOfMeasure",
-      "description": "A unit of measure, or unit, is a particular quantity value that has been chosen as a scale for  measuring other quantities the same kind (more generally of equivalent dimension).",
+      "description": "A unit of measure, or unit, is a particular quantity value that has been chosen as a scale for measuring other quantities the same kind (more generally of equivalent dimension).",
       "from_schema": "https://w3id.org/linkml/units",
       "imported_from": "linkml:units",
       "mappings": [
@@ -8842,9 +8891,9 @@
   ],
   "metamodel_version": "1.11.0",
   "source_file": "meta.yaml",
-  "source_file_date": "2026-05-05T16:16:44",
-  "source_file_size": 99888,
-  "generation_date": "2026-05-05T18:49:57",
+  "source_file_date": "2026-07-27T16:17:57",
+  "source_file_size": 102848,
+  "generation_date": "2026-07-27T16:31:11",
   "@type": "SchemaDefinition",
   "@context": [
     "staging/jsonld/meta.context.jsonld",