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30 lines
939 B
JavaScript
30 lines
939 B
JavaScript
10 months ago
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'use strict';
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const getDiscriminatorByValue = require('./getDiscriminatorByValue');
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/**
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* Find the correct constructor, taking into account discriminators
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* @api private
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*/
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module.exports = function getConstructor(Constructor, value, defaultDiscriminatorValue) {
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const discriminatorKey = Constructor.schema.options.discriminatorKey;
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let discriminatorValue = (value != null && value[discriminatorKey]);
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if (discriminatorValue == null) {
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discriminatorValue = defaultDiscriminatorValue;
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}
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if (Constructor.discriminators &&
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discriminatorValue != null) {
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if (Constructor.discriminators[discriminatorValue]) {
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Constructor = Constructor.discriminators[discriminatorValue];
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} else {
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const constructorByValue = getDiscriminatorByValue(Constructor.discriminators, discriminatorValue);
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if (constructorByValue) {
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Constructor = constructorByValue;
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}
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}
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}
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return Constructor;
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};
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