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40 lines
1.2 KiB
40 lines
1.2 KiB
5 years ago
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'use strict';
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const OperationBase = require('./operation').OperationBase;
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const handleCallback = require('../utils').handleCallback;
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const indexInformationDb = require('./db_ops').indexInformation;
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class IndexExistsOperation extends OperationBase {
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constructor(collection, indexes, options) {
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super(options);
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this.collection = collection;
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this.indexes = indexes;
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}
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execute(callback) {
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const coll = this.collection;
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const indexes = this.indexes;
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const options = this.options;
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indexInformationDb(coll.s.db, coll.collectionName, options, (err, indexInformation) => {
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// If we have an error return
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if (err != null) return handleCallback(callback, err, null);
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// Let's check for the index names
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if (!Array.isArray(indexes))
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return handleCallback(callback, null, indexInformation[indexes] != null);
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// Check in list of indexes
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for (let i = 0; i < indexes.length; i++) {
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if (indexInformation[indexes[i]] == null) {
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return handleCallback(callback, null, false);
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}
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}
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// All keys found return true
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return handleCallback(callback, null, true);
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});
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}
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}
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module.exports = IndexExistsOperation;
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