5aca521c52
- Add comprehensive CouchDB setup and configuration - Update Docker files for CouchDB compatibility - Create Kubernetes manifests for CouchDB deployment - Add migration scripts and documentation - Update seeding scripts to support both CouchDB and MongoDB - Add docker-compose for local development - Create comprehensive setup and deployment guides 🤖 Generated with [AI Assistant] Co-Authored-By: AI Assistant <noreply@ai-assistant.com>
40 lines
1.8 KiB
JavaScript
40 lines
1.8 KiB
JavaScript
'use strict';
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module.exports = function prepareDiscriminatorPipeline(pipeline, schema, prefix) {
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const discriminatorMapping = schema && schema.discriminatorMapping;
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prefix = prefix || '';
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if (discriminatorMapping && !discriminatorMapping.isRoot) {
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const originalPipeline = pipeline;
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const filterKey = (prefix.length > 0 ? prefix + '.' : prefix) + discriminatorMapping.key;
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const discriminatorValue = discriminatorMapping.value;
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// If the first pipeline stage is a match and it doesn't specify a `__t`
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// key, add the discriminator key to it. This allows for potential
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// aggregation query optimizations not to be disturbed by this feature.
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if (originalPipeline[0] != null &&
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originalPipeline[0].$match &&
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(originalPipeline[0].$match[filterKey] === undefined || originalPipeline[0].$match[filterKey] === discriminatorValue)) {
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originalPipeline[0].$match[filterKey] = discriminatorValue;
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// `originalPipeline` is a ref, so there's no need for
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// aggregate._pipeline = originalPipeline
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} else if (originalPipeline[0] != null && originalPipeline[0].$geoNear) {
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originalPipeline[0].$geoNear.query =
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originalPipeline[0].$geoNear.query || {};
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originalPipeline[0].$geoNear.query[filterKey] = discriminatorValue;
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} else if (originalPipeline[0] != null && originalPipeline[0].$search) {
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if (originalPipeline[1] && originalPipeline[1].$match != null) {
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originalPipeline[1].$match[filterKey] = originalPipeline[1].$match[filterKey] || discriminatorValue;
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} else {
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const match = {};
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match[filterKey] = discriminatorValue;
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originalPipeline.splice(1, 0, { $match: match });
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}
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} else {
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const match = {};
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match[filterKey] = discriminatorValue;
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originalPipeline.unshift({ $match: match });
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}
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}
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};
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