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35 lines
963 B
35 lines
963 B
4 years ago
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'use strict';
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const OperationBase = require('./operation').OperationBase;
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const Aspect = require('./operation').Aspect;
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const defineAspects = require('./operation').defineAspects;
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const resolveReadPreference = require('../utils').resolveReadPreference;
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class FindOperation extends OperationBase {
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constructor(collection, ns, command, options) {
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super(options);
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this.ns = ns;
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this.cmd = command;
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this.readPreference = resolveReadPreference(collection, this.options);
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}
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execute(server, callback) {
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// copied from `CommandOperationV2`, to be subclassed in the future
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this.server = server;
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const cursorState = this.cursorState || {};
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// TOOD: use `MongoDBNamespace` through and through
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server.query(this.ns.toString(), this.cmd, cursorState, this.options, callback);
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}
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}
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defineAspects(FindOperation, [
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Aspect.READ_OPERATION,
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Aspect.RETRYABLE,
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Aspect.EXECUTE_WITH_SELECTION
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]);
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module.exports = FindOperation;
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