Changes for page Technical details
Last modified by lzehl on 2021/07/05 18:57
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... ... @@ -97,9 +97,12 @@ 97 97 {{/code}} 98 98 99 99 (% style="text-align: justify;" %) 100 -The keywords of those nested dictionaries are pre-defined to consistently capture for all schema types and properties their namespace, their occurrence, their general description, and possible references to related or matching schema types and properties ofothermetadata initiatives(e.g.,schema.org).This setupalso allows us to definesomevalues/entriestobeautomatically filledinby the openMINDS integrationpipeline with each commit to one of the openMINDSrepositories(e.g., the namespace andoccurrence)andothersto bemanuallyeditable lateron(e.g.,thegeneral description andreferences).100 +The keywords of those nested dictionaries are pre-defined to consistently capture for all schema types and properties their namespace, their occurrence (cf. **##"schemas"##** in **##properties.json##**), their general description (cf. **##"description"##** in **##types.json##** and **##properties.json##**), and possible references to related or matching schema types (cf. **##"translatableTo"##** in **##types.json##**) and properties (cf. **##""sameAs""##** in **##properties.json##**) of other metadata initiatives (e.g., schema.org). 101 101 102 102 (% style="text-align: justify;" %) 103 +This setup also allows us to define some values/entries to be automatically filled in by the openMINDS integration pipeline with each commit to one of the openMINDS repositories (**##"name"##**, **##"schemas"##**) and others to be manually editable later on (**##"description"##**, **##"translatableTo"##**, **##"sameAs"##**, **##"nameForReverseLink"##**). 104 + 105 +(% style="text-align: justify;" %) 103 103 For security, outdated entries in those openMINDS vocabulary files (e.g., because the namespace of the schema type or property changed or the schema type or property was deleted) are not automatically deleted, but kept and marked as being deprecated. After evaluation, deprecated schema types or properties can be deleted manually from openMINDS vocabulary. 104 104 105 105 (% style="text-align: justify;" %) ... ... @@ -108,20 +108,36 @@ 108 108 === The openMINDS schema template syntax === 109 109 110 110 (% style="text-align: justify;" %) 111 -All openMINDS metadata models us ea light-weighted schema template syntaxfor defining theexpectedmetadata. The correspondinglyformattedschemafiles use the extension: **##.schema.tpl.json##**.114 +All openMINDS metadata models are defined using a light-weighted schema template syntax. Although this schema template syntax is inspired by JSON-Schema, it outsources most schema technicalities to be handled in the openMINDS integration pipeline, making the openMINDS schemas more human-readable, especially for untrained eyes. The few remaining customized technical properties which need additional interpretation are prefixed in the syntax with **##"_"##**. Within the openMINDS integration pipeline (cf. below), the schema template syntax is interpreted, extended and flexibly translated to various formal metadata formats (e.g., JSON-Schema). The specifications of the openMINDS schema template syntax are described in following. 112 112 113 113 (% style="text-align: justify;" %) 114 -Al though, as the fileextension suggests, this openMINDS schematemplatesyntaxis inspiredbyJSON-Schema,itfacilitatesoreven excludestechnicalaspects that are generallyexpected for theopenMINDSschemasmaking themmorehuman-readable,especially for untrainedeyes.Behindthe scenes,withinthe openMINDS integration pipeline (cf. below), thisschema template syntax is then interpretedand flexiblytranslated to various formal metadata formats (e.g., JSON-Schema).117 +All openMINDS schemas need to have the extension **##.schema.tpl.json##** and each schema is defined as a nested associative array (dictionary) with the following conceptual structure: 115 115 119 +{{code language="json"}} 120 +{ 121 + "_type": "https://openminds.ebrains.eu/LABEL_OF_METADATA_MODEL/SCHEMA_NAME", 122 + "properties": { 123 + "PROPERTY_NAME": { 124 + "type": "DATA_TYPE", 125 + "_instruction": "METADATA_ENTRY_INSTRUCTION" 126 + }, 127 + "required": [ 128 + "PROPERTY_NAME" 129 + ] 130 +} 131 +{{/code}} 132 + 116 116 (% style="text-align: justify;" %) 117 - Despite the simplificationin comparisontoJSON-Schema,the openMINDSschemaemplatesare also,atthe core,speciallyformattedJSONfilesusingaparticularsyntax,meaningspecialkey-valuepairs thatdefinethe validationrulesof aschema.134 +**##"_type"##** defines the schema type (or namespace) with the depicted naming convention, where the label of the respective openMINDS metadata model (e.g., **##"core"##**) and the schema name (format: UpperCamelCase; e.g. **##"Person"##**) have to be specified. The schema name should be meaningful and provide some insides into what metadata content the schema covers. 118 118 119 119 (% style="text-align: justify;" %) 120 - Please find in the followingafulldocumentation of the openMINDS schema template syntaxandhow'skey-valuepairsneedtobe defined andinterpreted.137 +Under **##"properties"##** a nested associated array is defined, where each key defines the property name (format: lowerCamelCase; e.g. **##"givenName"##**) and the associated value is again a nested associated array defining the expected data **##"type"##** and the **##"_instructions"##** for entering the correct metadata for the respective property. Currently the openMINDS schema template syntax supports the following data types: **##"string, **##"integer"##**, **##"float"##**, **##"boolean"##**, **##"array"##** and **##"object"##**. Depending on the expected data type additional constraints can be made for the metadata entry of a respective property (cf. below). 121 121 122 122 (% style="text-align: justify;" %) 123 - (//**comingsoon**//)140 +Under **##"required"##** a list of property names can be provided that are obligatory to be present in a correctly instantiated metadata instance of the respective schema. If none of the properties are required, this key-value pair does not have to be specified. 124 124 125 125 === The openMINDS integration pipeline === 126 126 127 -(//**coming soon**//) 144 +(//**coming soon**//) If you'd like to learn more about the openMINDS integration pipeline, especially if you'd like to contribute to it, please get in touch with us (the openMINDS development team) via the issues on the openMINDS or openMINDS_generator GitHub or the support email: openminds@ebrains.eu 145 + 146 +{{putFootnotes/}}