Mobile Application DevelopmentMyRent Service

Waterford Institute of Technology

November 1, 2016

John Fitzgerald

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MyRent serviceLearning objectives

• Service being provided to facilitate client dev.• Service provided for deployment to localhost.• Service also deployed on Heroku (access provided).

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MyRent service appFile structure

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MyRent service appService JUnit Play tested

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MyRent service appAndroid client development

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MyRent service appModel

• GenericModel extended.• Play Model an alternative.• Generic: allows bespoke id.• Model: auto-generates id.

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MyRent service appUtility class

Enables controller actions to translate to & from Json objects.

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MyRent service appJavaScript Object Notation (JSON)

• Text-based open standard.• Douglas Crockford

originator.• Transmit network data.• Replacing XML.

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MyRent service appGoogle Gson

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MyRent service appController: ResidencesAPI

• Actions do not renderviews.

• Use renderJson toreturn data.

• HTTP responsecodes: OK,notFound.

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MyRent service appController: ResidencesAPI

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MyRent service appController: ResidencesAPI

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MyRent service appController: ResidencesAPI

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MyRent service appController: ResidencesAPI

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MyRent service appController: ResidencesAPI

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MyRent service appRoutes - API

Client application uses these patterns to communicate with service.

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MyRent service appRoutes - API

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MyRent service appTest your API with Postman

GET localhost:9000/api/residences

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MyRent service appPreload sample data

Not compatible with unit testing.

// Bootstrap.java@OnApplicationStartpublic class Bootstrap extends Job {

public void doJob() {if (Residence.count() == 0) {Fixtures.deleteDatabase();Fixtures.loadModels("data.yml");

}}

}

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MyRent service appPreload sample data

Not compatible with unit testing.

// data.ymlResidence(residence_1):

id: 1234geolocation: "52.258136,−7.127810"date: 1448196498688rented: truetenant: Homerzoom: 12.0photo: "photo 1"

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ReferencesRetrofit from Square Open Source

1.Gson User Guidehttps://goo.gl/ZPXTsI [Accessed 2016-10-30]3. Postman (Chrome Web Store)https://goo.gl/1we0lx [Accessed 2016-10-30]

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