miridoo-js-orm/sgbd/Table.js

miridoo javascript orm for database

module.exports = function($name, $connection){

    var $only = [];
    var $autoRelationsSate = {};

    this.$proxy = {
        $original : [],
        $yield : 0,
        $set : {}
    };

    this.$primaryColumn = 'id';
    this.$relations = [];
    this.$relationsUes = {};

    //contain all query who must be execute
    //this.queue = [];
    this.$where = '';
    this.$query = '';

    this.$QueryBuilder = function(){
        //return the query builder
        return null;
    };
    this.exports = function(newname){
        //export as txt., sql, csv etc...
        return this;
    };
    this.delete = function(newname){
        //drop the table
        return this;
    };
    this.rename = function(newname){
        //rename the table
        return this;
    };
    this.alter = function(schema){
        //change column of the table
        return this;
    };
    this.create = function(schema){
        $name = name || $name;
        //check if tables exists
        //if yes try to update table
        //the best way is : call the alter function
        //create the table with this schema
        //return new table if is success remove the : return this;
        return this;
    };
    this.clone = function(newname){
        //create a new table with this shcema
        return this;
    };
    this.removeRows = function(){
        //remove all row
        //exemple in mysql
        //delete from $name;
        return this;
    };
    this.reset = function(){
        //exemple in mysql
        //truncate $name;
        return this;
    };
    this.query = function(sql, params){
        //build the query
        return this;
    };
    this.save = function(){
        //single insertion into table
        return this;
    };
    this.msave = function(){
        //multiple insertion into table
        return this;
    };
    this.schema = function(){

        return this;
    };

    this.find = function(){
        //check if the $primaryColumn have the value
        return this;
    };
    this.get = function(qyery, params){
        //build query
        return; //promise who build the query
    };

    this.only = function(){
        if(arguments.length > 0) {
            $only = Array.from(arguments);
            return this;
        }
        return $only.length > 0?$only.join(','):'*';
    };
    this.findBy = function(clause){
        //clause is query objet
        return this;
    };
    this.$cleanRelation = function(){
        $autoRelationsSate = [];
        this.$where = '';
        this.$query = '';
        $only = [];
    };
    this.with = function(){
        for(var i in arguments)
            $autoRelationsSate[arguments[i]] = true;
        return this;
    };
    this.notWith = function(){
        for(var i in arguments)
            $autoRelationsSate[arguments[i]] = false;
        return this;
    };
    this.$hrefBuilder = function(data, fn){
        var k = this.$relations.slice(0);
        var i = -1;
        var kdata = {};

        k.push({auto : true, call : function(){
            for(var j in data){
                for(var z in kdata){
                    for(var e in kdata[z].v){
                        if(kdata[z].v[e] && (kdata[z].v[e][kdata[z].r.column] == data[j][kdata[z].r.use])){
                            if(kdata[z].r.relation == '1'){
                                data[j][z] = kdata[z].v[0];
                                break;
                            }else{
                                data[j][z] = data[j][z] || [];
                                data[j][z].push(kdata[z]);
                            }
                        }
                    }
                    if(!data[j][z]){
                        data[j][z] = null;
                    }
                }
            }
            next();
        }});
        k.push({auto : true, call : fn});

        var next = function(name, values, relation){
            if(name && values){
                kdata[name] = {v : values, r : relation};
            }
            else if(name && !values){
                throw new Error(name);
            }
            i++;

            if(k[i] && ((k[i].auto  == true && $autoRelationsSate[k[i].name] !== false) || (k[i].auto  == false && $autoRelationsSate[k[i].name] === true))){
                k[i].call(next);
            }
            else if(k[i+1]) next();
        };
        next();
    };
    this.link = function(name, relation){
        //name is the var name in the result object
        //this.$relations.push({auto : relation.auto, call : function(next){ next();} });//use name and relation in the function
        return this;
    };
    this.column = function(){
        //return the column manager
        return this;
    };


    /*
     * simple query maker
     */

    this.where = function(query){
        this.$where = query;
        return this;
    };
    this.first = function(nb){
        //nb = nb || 1
        //this.$query += ' order by $primaryColumn desc limit 0, nb'
        return; //promise who call get
    };
    this.last = function(nb){
        //nb = nb || 1
        //self.$query += ' order by $primaryColumn asc limit 0, nb'
        return; //promise who call get
    };

};