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Docker

Spring Core

What is Docker? Docker is a standard for Linux containers A "Container" is an isolated runtime inside of Linux A "Container" provides a private machine like space under Linux Containers will run under any modern Linux Kernel Containers can: Have their own p...

Data Validation with JSR-303

Spring Core

Introduced Java Bean Validation Part of JEE 6 and above, suported by Spring since version 3 Set of annotations used to validate Java Bean properties JSR 380 - Bean Validation 2.0 Added to Spring Framework 5.0 Available in Spring Boot 2.0.0+ Uses Hibnernate ...

Exception Handling

Spring Core

JSR 303 Introduced Java Bean Validation Part of JEE 6 and above, suported by Spring since version 3 Set of annotations used to validate Java Bean properties JSR 380 - Bean Validation 2.0 Added to Spring Framework 5.0 Available in Spring Boot 2.0.0+ Uses Hib...

Data Binding in Spring

Spring Core

Command Objects (aka Backing Beans) - Used to transfer data to and from web forms Spring will automatically bind data of form posts Binding done by property name (without the 'get' / 'set') Ex. address.addressLine1 would bind to the addressLine1one of the ad...

Options for Database Intialization

Spring Core

DDL = Data Definition Lang DML = Data Manipulation Lang Hibernate Allows the database to be created from the JPA in memory Hibernate property is set by the Spring property spring.jpa.hibernate.ddl-auto Options are: none - Hibernate does nothing validate - F...

JPA

Spring Core

Java Persistance API Entity Types @OneToOne One Entity related to one other @OneToMany One entity is related to many entities (List, Set, Map, SortedSet, SortedMap) @ManyToOne Inverse of OneToMany @ManyToMany Many entities are related to many entiti...

Spring Boot

Spring Core

Spring boot is sort of a configuration wrapper around the Spring MVC Framework. Dependency Management Maven or Gradle are supported. Can be used with Ant, but not reccommended. Each version of Spring Boot is configured to work with a specific version of Spring...

Dependency Inversion Principle

Spring Core

One of the basic rules of good programming is to avoid tight coupling. Ex, creating an object of a class using the new operator results in a class being tightly coupled to another class. This does not disrupt small applications, but in enterprise applicatio...

Open Closed Principle

Spring Core

In good application design and the code writing part, you should avoid change in the existing code when requirements change Instead, you should extend the existing functionality by adding new code to meet the new requirements. You can achieve this by follo...

Interface Segregation Principle

Spring Core

Interfaces are a core part of Java and are used extensively to achieve abstraction and to support multiple inheritance of type (the ability of a class to implement more than one interface) This principle states that “Clients should not be forced to depend on ...

Data Driven Documents

D3.js

Introduction D3 is a JS library which can be used to create charts and visualiztions, but to call it a "charting" library is an understatement. It provides tools for manipulating SVG/HTML and manipulating data. It's 'low-level' nature allows users to customize...

Making Graphs

D3.js

Scales Scales are functions that map from an input domain to an output range Linear Scales Linear scales have equal division for equal values. We input a svg to grid and scale it down to fit the demensions so it doesn't run off the screen. Consider the foll...