by Avneesh Singh | Dec 31, 2014 | Java
This blog demonstrates diffrence between ArrayList remove() method and Collection remove() method that we use and face below types of problem:– import java.util.*; public class UsingCollection{ public static void main(String[] args) { ArrayList<String> lst...
by Abdullah Qayuum | Dec 31, 2014 | Grails
Constraints provide Grails with a declarative DSL for defining validation rules, schema generation and CRUD generation meta data. For example, consider these class User { String username String password String email int age static constraints = { username size: 5..15,...
by Gaurav Bhatnagar | Dec 28, 2014 | Grails
Data transfer object (DTO) is an object that carries data between processes. Working with a remote interface where each call to it is expensive. Response to each call should bring as much data as possible so if multiple request are required to bring data for a...
by Vivek Sadh | Dec 25, 2014 | Database
Liquibase is an open source technology for tracking, managing and applying database schema changes. All changes to the database are stored in XML files in the form of change-sets and is identified by a combination of an “id” and “author” tag....
by Praveen Kumar | Dec 22, 2014 | MongoDB
Follow below steps to enable authentication in MongoDB. 1- Run command praveen@acer-aspire:~# gedit /etc/mongodb.conf add ‘auth=true’ or uncomment by removing # it if exists. 2- Add atleast one user to the DB ‘admin’ . Admin user can access all the collections in the...
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