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Diffstat (limited to 'src/data/composite/wiki-properties/singleReference.js')
-rw-r--r-- | src/data/composite/wiki-properties/singleReference.js | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/data/composite/wiki-properties/singleReference.js b/src/data/composite/wiki-properties/singleReference.js new file mode 100644 index 0000000..db4fc9f --- /dev/null +++ b/src/data/composite/wiki-properties/singleReference.js @@ -0,0 +1,46 @@ +// Stores and exposes one connection, or reference, to another data object. +// The reference must be to a specific type, which is specified on the class +// input. +// +// See also: +// - referenceList +// - withResolvedReference +// + +import {input, templateCompositeFrom} from '#composite'; +import {isThingClass, validateReference} from '#validators'; + +import {exposeDependency} from '#composite/control-flow'; +import {inputWikiData, withResolvedReference} from '#composite/wiki-data'; + +export default templateCompositeFrom({ + annotation: `singleReference`, + + compose: false, + + inputs: { + class: input.staticValue({validate: isThingClass}), + + find: input({type: 'function'}), + + data: inputWikiData({allowMixedTypes: false}), + }, + + update: ({ + [input.staticValue('class')]: thingClass, + }) => ({ + validate: + validateReference( + thingClass[Symbol.for('Thing.referenceType')]), + }), + + steps: () => [ + withResolvedReference({ + ref: input.updateValue(), + data: input('data'), + find: input('find'), + }), + + exposeDependency({dependency: '#resolvedReference'}), + ], +}); |