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Android Clean Architecture

Implementing the Bookmark Project use case

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Within Clean Architecture, the Domain layer defines Use Cases which define operations which can be performed in our application. In this lesson, we’ll be implementing the Bookmark Project Use Cases class for our application so that we can bookmark a project within our external data source through our domain layer.

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This lesson should be before "Implementing the get Bookmarked Projects use case".

Can you explains why you're building a companion object in the Params class?

Sure thing! Because the use case classes are used within our view models, we need a way to kick off the work performed by the use case with some parameters. The Params class allows us to keep our buildUseCase() functions abstract (they need to be as all of our classes extend from the base use case classes). The reason for it being in a companion object is so that we can call the parameters function that we define within it - this way in future we can easily have multiple parameter functions incase we want to change the different parameters that are passed into the use case class. This keeps the constructor of the Params class private and enforces the parameters that can be passed into the class using these functions.

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Lessons in Android Clean Architecture

Introduction to Clean Architecture
03:40
Joe Birch
GDE
Android and Clean Architecture
03:51
Joe Birch
GDE
Setting up a Multi-Module project
02:24
Joe Birch
GDE
Setting up the Domain layer module
02:24
Joe Birch
GDE
Creating the abstraction for our RxJava Observation Thread
02:02
Joe Birch
GDE
Setting up the Business Data for the Domain Layer
01:47
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GDE
Setting up the data access interface for the Domain Layer
01:49
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GDE
Setting up the Domain Layer Interactor classes
Pro
03:28
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GDE
Implementing the Get Projects use case
Pro
01:49
Joe Birch
GDE
Implementing the get Bookmarked Projects use case
Pro
01:33
Joe Birch
GDE
Implementing the Bookmark Project use case
Pro
01:57
Joe Birch
GDE
Implementing the UnBookmark Project use case (Domain layer 8)
Pro
02:03
Joe Birch
GDE
Testing the Get Projects use case
Pro
02:41
Joe Birch
GDE
Testing the Get Bookmarked Projects use case
Pro
02:04
Joe Birch
GDE
Testing the Bookmark Project use case
Pro
02:10
Joe Birch
GDE
Testing the UnBookmark Project use case
Pro
02:06
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GDE
Setting up the data module
Pro
02:17
Joe Birch
GDE
Creating the data models for the data layer
Pro
02:48
Joe Birch
GDE
Creating the external source interfaces for our data layer
Pro
02:24
Joe Birch
GDE
Creating the data layer store interface
Pro
01:19
Joe Birch
GDE
Creating the data layer cache data store
Pro
01:21
Joe Birch
GDE
Creating the data layer remote data store
Pro
01:39
Joe Birch
GDE
Creating the data store factory class
Pro
01:24
Joe Birch
GDE
Creating the central access point for the data layer
Pro
03:00
Joe Birch
GDE
Setting up the tests for the Data Layer
Pro
00:46
Joe Birch
GDE
Testing the data store factory class
Pro
01:39
Joe Birch
GDE
Testing the project entity mapper
Pro
01:18
Joe Birch
GDE
Testing the projects data repository
Pro
06:02
Joe Birch
GDE
Testing the projects cache data store
Pro
06:30
Joe Birch
GDE
Testing the projects remote data store
Pro
02:17
Joe Birch
GDE
Setting up the remote module
Pro
02:21
Joe Birch
GDE
Creating the data models for the remote layer
Pro
02:06
Joe Birch
GDE
Creating the Retrofit Service for the remote data source
Pro
01:58
Joe Birch
GDE
Creating the Retrofit Service Factory for the remote service interface
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02:52
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Creating the data model mapper for the Remote Layer
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01:59
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Creating the Remote Source implementation
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01:55
Joe Birch
GDE
Setting up the Remote layer for testing
Pro
02:13
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GDE
Testing the remote model mapper class
Pro
01:39
Joe Birch
GDE
Testing the remote source implementation
Pro
05:09
Joe Birch
GDE
Setting up the Cache module
Pro
02:45
Joe Birch
GDE
Setting up the Cache layer data models
Pro
02:02
Joe Birch
GDE
Creating the database for the cache layer
Pro
01:34
Joe Birch
GDE
Creating the cached project Data Access Object
Pro
02:42
Joe Birch
GDE
Creating the Configuration Data Access Object
Pro
02:07
Joe Birch
GDE
Creating the cache model mapper
Pro
02:06
Joe Birch
GDE
Creating the Projects Cache data source Implementation
Pro
03:57
Joe Birch
GDE
Setting up the tests for our cache layer
Pro
01:17
Joe Birch
GDE
Testing the cached project model mapper
Pro
01:44
Joe Birch
GDE
Testing the Cached project DAO
Pro
04:33
Joe Birch
GDE
Testing the Configuration DAO
Pro
02:05
Joe Birch
GDE
Testing the projects cache implementation
Pro
05:48
Joe Birch
GDE
Setting up the presentation module
Pro
02:05
Joe Birch
GDE
Creating the data models for the presentation layer
Pro
01:13
Joe Birch
GDE
Creating the data model mapper for the presentation layer
Pro
01:26
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GDE
Creating the presentation state model
Pro
01:39
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GDE
Creating the browse projects view model
Pro
04:25
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GDE
Creating the bookmarked projects view model
Pro
03:05
Joe Birch
GDE
Setting up the presentation module tests
Pro
02:09
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GDE
Testing the view model mapper
Pro
01:17
Joe Birch
GDE
Testing our Browse Projects View Model implementation
Pro
04:36
Joe Birch
GDE
Testing our Browse Bookmarked Projects View Model implementation
Pro
04:34
Joe Birch
GDE
Setting up the UI module
Pro
02:22
Joe Birch
GDE
Creating the Post Execution Thread Implementation
Pro
01:26
Joe Birch
GDE
Setting up the application class
Pro
00:50
Joe Birch
GDE
Setting up the Dependency Injection for the UI module
Pro
02:46
Joe Birch
GDE
Creating the UI modules Project representation
Pro
00:50
Joe Birch
GDE
Creating the the Project model mapper for the UI module
Pro
01:24
Joe Birch
GDE
Setting up the Browse Projects Activity
Pro
01:08
Joe Birch
GDE
Configuring the DI for the project
Pro
04:37
Joe Birch
GDE
Creating the Project item view
Pro
01:51
Joe Birch
GDE
Creating the Browse Projects Adapter
Pro
03:27
Joe Birch
GDE
Creating the browse bookmarked projects adapter
Pro
03:54
Joe Birch
GDE
Creating the browse bookmarked projects activity
Pro
03:18
Joe Birch
GDE
Tying together the browse projects and bookmarked projects activity
Pro
02:30
Joe Birch
GDE
Setting up Unit Tests for the UI module
Pro
00:54
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GDE
Test the project model mapper
Pro
01:10
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GDE
Configuring the Dependency Injection for our User Interface tests
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06:10
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GDE
Writing Espresso tests for the Browse Projects Activity
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03:15
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GDE
Writing Espresso tests for the Bookmarked Projects Activity
Pro
02:34
Joe Birch
GDE
Simplifying the work we have done
Pro
05:14
Joe Birch
GDE