25.18.1.3.28 Federal Preemption of State Community Property Characterization.25.18.1.3.27 Other Agreements to Transmute Property.
25.18.1.3.25 Premarital and Post-Marital Contracts Between Spouses. 25.18.1.3.23 Mixing or Commingling Community Property With Separate Property. 25.18.1.3.21 Capital Gains From Separate Property. 25.18.1.3.18 Joint Tenancy and Tenancy in Common Property. 25.18.1.3.17 Life Insurance and Pensions. 25.18.1.3.16 Sale or Exchange of Separate Property. 25.18.1.3.15 Community Property Presumption. 25.18.1.3.14 Income from Separate Property Received During Marriage. 25.18.1.3.13 When the Character of Property Is Determined. 25.18.1.3.11 Definition of Separate Property. 25.18.1.3.10 Definition of Community Property. 25.18.1.3.8 Forms of Ownership and Characteristics. 25.18.1.3.7 Characterization of Property. 25.18.1.3.6 Determining Which States Laws Apply in Property Characterization. 25.18.1.3.4 Termination of the Community Estate. 25.18.1.3.3 Registered Domestic Partners. 25.18.1.3 Determining if Community Property Laws Apply. 25.18.1.2.4 Tax Assessment and Collection under Community Property Laws. 25.18.1.2.3 Analysis of Community Property Cases. 25.18.1.2 Property Rights and Federal Taxation. 25.18.1 Basic Principles of Community Property Law. If you expect clients to copy your model objects, your class should implement object copying. If you expect objects of your model class to be archived, make sure that the class encodes and decodes the instance variables of its objects. It should also ensure that it releases any instance variables holding object values in its dealloc method. It should follow the standard form for initializer methods. In most cases, a model class implements an initializer method to set its instance variables to reasonable initial values. The naming of accessor methods (and, implicitly, declared properties) is a factor in this mechanism. It is used by Core Data and elsewhere in Cocoa. Key-value coding is a mechanism that lets clients access an object's property using the property name as a key. For this reason, there are recommended forms for implementing getter methods and setter methods. An important role of accessor methods and declared properties is to manage object memory. Declared properties are a language-level convenience that allow the runtime to synthesize accessor methods for a class. Accessor methods typically get and set the values of instance variables (and are colloquially known as getter and setter methods). Accessor methods and declared properties provide ways to preserve encapsulation because they mediate access to an object’s instance data. There are tradeoffs to using object versus nonobject types, and object mutability is a consideration.Īccessor methods and declared properties. Instance variables can be objects, scalar values, or structures such as NSRange. You declare instance variables to hold the encapsulated data of an application. When you implement your model subclass, you should consider the following aspects of class design: For example, begin the names of instance variables, declared properties, and declared methods with a lowercase letter and capitalize the first letter of embedded words. To create a model object, define it as you would a basic class and observe the Cocoa naming conventions. A Well-Designed Model ClassĪ model class-that is, a class that produces model objects-is typically a subclass of NSObject or, if you are taking advantage of the Core Data technology, a subclass of NSManagedObject. Ideally, a model object should have no explicit connection to the view objects that present its data and allow users to edit that data-in other words, it should not be concerned with user-interface and presentation issues. (The other two roles are played by view and controller objects.) Any data that is part of the persistent state of the application (whether that persistent state is stored in files or databases) should reside in the model objects after the data is loaded into the application.īecause model objects represent knowledge and expertise related to a specific problem domain, they can be reused when that problem domain is in effect. Model objects play one of the three roles defined by the Model-View-Controller design pattern. 
Model objectĪ model object is a type of object that contains the data of an application, provides access to that data, and implements logic to manipulate the data. Links to downloads and other resources may no longer be valid. This document may not represent best practices for current development.
0 kommentar(er)
