Creating Entities

This is the manual for older MicroStream versions (Version < 5.0).
The new documentation (Version >= 5.0) is located at:
​https://docs.microstream.one/​
Given is the following entity:
public interface Person extends Entity
{
	public String firstName();
	 
	public String lastName();
}
So how is it done? Since the code generator provides a creator, we can use it to create a new Person.
Person john = PersonCreator.New()
    .firstName("John")
    .lastName("Doe")
    .create();
Let's see what the debugger displays if we run this code:
There's always an entity chain, with 
The identity (PersonEntity) as outer layer
Then the logic layers, none here in our example
And the inner most layer is always the data (PersonData), which holds the properties.
The properties can be accessed like defined in the entity's interface:
String firstName = john.firstName(); // -> John
String lastName  = john.lastName();  // -> Doe 
The creator can also be used to create copies. Just hand over the existing one as template:
Person mike = PersonCreator.New(john) // use John as template
			.firstName("Mike")
			.create();
This will create a "Mike Doe".
Defining Entities
Updating Entities
Last modified 1yr ago