smartdata/dist/smartdata.classes.dbcollection.js

"use strict";
const plugins = require("./smartdata.plugins");
function Collection(db) {
    return function (constructor) {
        constructor['dbCollection'] = new DbCollection(constructor.name, db);
    };
}
exports.Collection = Collection;
class DbCollection {
    constructor(nameArg, dbArg) {
        this.objectValidation = null;
        this.name = nameArg;
        this.db = dbArg;
        if (this.db.dbType === 'mongodb') {
            this.collection = dbArg.db.collection(nameArg);
        }
        else {
            this.collection = new plugins.nedb();
        }
    }
    /**
     * adds a validation function that all newly inserted and updated objects have to pass
     */
    addDocValidation(funcArg) {
        this.objectValidation = funcArg;
    }
    /**
     * finds an object in the DbCollection
     */
    find(docMatchArg, optionsArg) {
        let done = plugins.q.defer();
        if (this.db.dbType === 'mongodb') {
            let findCursor = this.collection.find(docMatchArg);
            if (optionsArg) {
                if (optionsArg.limit) {
                    findCursor = findCursor.limit(1);
                }
            }
            findCursor.toArray((err, docs) => {
                if (err) {
                    done.reject(err);
                    throw err;
                }
                done.resolve(docs);
            });
        }
        else if (this.db.dbType === 'nedb') {
            this.collection.find(docMatchArg, (err, docs) => {
                if (err) {
                    done.reject(err);
                    throw err;
                }
                done.resolve(docs);
            });
        }
        return done.promise;
    }
    /**
     * inserts object into the DbCollection
     */
    insertOne(docArg) {
        let done = plugins.q.defer();
        this.checkDoc(docArg).then(() => {
            if (this.db.dbType === 'mongodb') {
                this.collection.insertOne(docArg)
                    .then(() => { done.resolve(); });
            }
            else if (this.db.dbType === 'nedb') {
                this.collection.insert(docArg, (err, newDoc) => {
                    if (err) {
                        done.reject(err);
                        throw err;
                    }
                    done.resolve();
                });
            }
        }, () => {
            done.reject(new Error('one the docs did not pass validation'));
        });
        return done.promise;
    }
    /**
     * inserts many objects at once into the DbCollection
     */
    insertMany(docArrayArg) {
        let done = plugins.q.defer();
        let checkDocPromiseArray = [];
        for (let docArg of docArrayArg) {
            checkDocPromiseArray.push(this.checkDoc(docArg));
        }
        plugins.q.all(checkDocPromiseArray).then(() => {
            if (this.db.dbType === 'mongodb') {
                this.collection.insertMany(docArrayArg)
                    .then(() => { done.resolve(); });
            }
            else if (this.db.dbType === 'nedb') {
                let paramArray = plugins.lodash.concat(docArrayArg, (err, newDoc) => {
                    if (err) {
                        done.reject(err);
                        throw err;
                    }
                    done.resolve();
                });
                this.collection.insert.apply(null, paramArray);
            }
        });
        return done.promise;
    }
    /**
     * checks a Doc for constraints
     */
    checkDoc(docArg) {
        let done = plugins.q.defer();
        let validationResult = true;
        if (this.objectValidation) {
            validationResult = this.objectValidation(docArg);
        }
        if (validationResult) {
            done.resolve();
        }
        else {
            done.reject('validation of object did not pass');
        }
        return done.promise;
    }
}
exports.DbCollection = DbCollection;
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