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27 lines
910 B
JavaScript
27 lines
910 B
JavaScript
"use strict";
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const { validateArguments } = require("@validatem/core");
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const node = require("../ast-node");
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module.exports = function count(operations) {
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const isCollection = require("../validators/operations/is-collection")(operations);
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return function count(_collection) {
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let [ collection ] = validateArguments(arguments, {
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collection: [ isCollection ]
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});
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// TODO: Investigate whether this can be made more performant by counting a specific field rather than *. That would probably require stateful knowledge of the database schema, though.
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let fieldReference = (collection != null)
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? operations.remoteField({ collection: collection, field: "*" }) // FIXME: Make sure not to break this (internally) when making field name checks more strict
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: operations.field("*");
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return node({
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type: "aggregrateFunction",
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functionName: "count",
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args: [ fieldReference ]
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});
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};
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};
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