The JavaScript Database, for Node.js, nw.js, electron and the browser
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nedb/lib/executor.js

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1.0 KiB

/**
* Responsible for sequentially executing actions on the database
*/
var async = require('async')
;
function Executor () {
this.queue = async.queue(function (task, cb) {
var callback
, lastArg = task.arguments[task.arguments.length - 1]
;
// Always tell the queue task is complete. Execute callback if any was given.
if (typeof lastArg === 'function') {
callback = function () {
lastArg.apply(null, arguments);
cb();
};
task.arguments[task.arguments.length - 1] = callback;
} else {
callback = function () {
cb();
};
task.arguments.push(callback);
}
task.fn.apply(task.this, task.arguments);
}, 1);
}
/**
* @param {Object} options
* options.this - Object to use as this
* options.fn - Function to execute
* options.arguments - Array of arguments
*/
Executor.prototype.push = function () {
this.queue.push.apply(this, arguments);
};
// Interface
module.exports = Executor;