82 lines
1.5 KiB
JavaScript
82 lines
1.5 KiB
JavaScript
'use strict';
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/**
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* Module dependencies.
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*/
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var mongoose = require('mongoose'),
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Schema = mongoose.Schema,
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_ = require('lodash'),
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math = require('math');
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var BooleanExpressionSchema = new Schema({
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expressionString: {
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type: String,
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},
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result: {
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type: Boolean,
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}
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});
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BooleanExpressionSchema.methods.evaluate = function(){
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if(this.expressionString){
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//Get headNode
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var headNode = math.parse(this.expressionString);
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var expressionScope = {};
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var that = this;
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//Create scope
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headNode.traverse(function (node, path, parent) {
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if(node.type === 'SymbolNode'){
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mongoose.model('Field')
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.findOne({_id: node.name}).exec(function(err, field){
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if(err) {
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console.log(err);
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throw new Error(err);
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}
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if(!!_.parseInt(field.fieldValue)){
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that.expressionScope[node.name] = _.parseInt(field.fieldValue);
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}else {
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that.expressionScope[node.name] = field.fieldValue;
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}
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console.log('_id: '+node.name);
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console.log('value: '+that.expressionScope[node.name]);
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});
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}
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});
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var code = headNode.compile();
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var result = code.eval(expressionScope);
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this.result = result;
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return result;
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}else{
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return null;
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}
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};
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mongoose.model('BooleanExpression', BooleanExpressionSchema);
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/**
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* Form Schema
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*/
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var LogicJumpSchema = new Schema({
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created: {
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type: Date,
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default: Date.now
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},
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lastModified: {
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type: Date,
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},
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BooleanExpression: {
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type: Schema.Types.ObjectId,
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ref: 'BooleanExpression'
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},
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});
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mongoose.model('LogicJump', LogicJumpSchema);
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