@oat-sa/tao-item-runner-qti
Version:
TAO QTI Item Runner modules
67 lines (54 loc) • 2.24 kB
JavaScript
define(['lodash'], function (_) { 'use strict';
_ = _ && Object.prototype.hasOwnProperty.call(_, 'default') ? _['default'] : _;
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; under version 2
* of the License (non-upgradable).
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if random, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2015-2019 (original work) Open Assessment Technlogies SA (under the project TAO-PRODUCT);
*
*/
/**
* Process operands and returns the random.
* @type {OperatorProcessor}
* @exports taoQtiItem/scoring/processor/expressions/operators/random
*/
var randomProcessor = {
constraints: {
minOperand: 1,
maxOperand: 1,
cardinality: ['multiple', 'ordered'],
baseType: ['identifier', 'boolean', 'integer', 'string', 'point', 'pair', 'directedPair', 'file', 'uri', 'intOrIdentifier', 'duration', 'float']
},
operands: [],
/**
* Process the random of the operands.
* @returns {?ProcessingValue} the random
*/
process: function() {
var result = {
cardinality: 'single'
};
var op;
//if at least one operand is null, then break and return null
if (_.some(this.operands, _.isNull) === true) {
return null;
}
op = this.preProcessor.parseVariable(this.operands[0]);
result.value = op.value[_.random(0, op.value.length - 1)];
result.baseType = op.baseType;
return result;
}
};
return randomProcessor;
});