🗊Презентация Spring data rest

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Слайд 1


Spring data rest
Описание слайда:
Spring data rest

Слайд 2


Features Provides rest api for domain model using HAL. Supports pagination. Allows to define projections.
Описание слайда:
Features Provides rest api for domain model using HAL. Supports pagination. Allows to define projections.

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What is HATEOAS? HATEOAS is a concept of application architecture. It defines the way in which application clients interact with the server, by navigating hypermedia links they find inside resource models returned by the server. A core principle of HATEOAS is that resources should be discoverable through the publication of links that point to the available resources.
Описание слайда:
What is HATEOAS? HATEOAS is a concept of application architecture. It defines the way in which application clients interact with the server, by navigating hypermedia links they find inside resource models returned by the server. A core principle of HATEOAS is that resources should be discoverable through the publication of links that point to the available resources.

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What is HAL? HAL = Hypertext Application Language. HAL is a generic media type with which Web APIs can be developed and exposed as series of links. MediaType = "application/hal+json"
Описание слайда:
What is HAL? HAL = Hypertext Application Language. HAL is a generic media type with which Web APIs can be developed and exposed as series of links. MediaType = "application/hal+json"

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What is HAL? GET /orders/523 HTTP/1.1 Host: example.org Accept: application/hal+json HTTP/1.1 200 OK Content-Type: application/hal+json { "_embedded" : { "transactions" : [ { ... } ] }, "_links" : { "first" : { "href" : "http://localhost:8080/api/transactions?page=0&size=20" }, … }, "page" : { "size" : 20, "totalElements" : 26, "totalPages" : 2, "number" : 0 } }
Описание слайда:
What is HAL? GET /orders/523 HTTP/1.1 Host: example.org Accept: application/hal+json HTTP/1.1 200 OK Content-Type: application/hal+json { "_embedded" : { "transactions" : [ { ... } ] }, "_links" : { "first" : { "href" : "http://localhost:8080/api/transactions?page=0&size=20" }, … }, "page" : { "size" : 20, "totalElements" : 26, "totalPages" : 2, "number" : 0 } }

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Dependency <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-rest</artifactId> </dependency>
Описание слайда:
Dependency <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-rest</artifactId> </dependency>

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RepositoryRestConfigurer @Bean public RepositoryRestConfigurer repositoryRestConfigurer() { return new RepositoryRestConfigurerAdapter() { @Override public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) { config.setBasePath("/api"); } }; }
Описание слайда:
RepositoryRestConfigurer @Bean public RepositoryRestConfigurer repositoryRestConfigurer() { return new RepositoryRestConfigurerAdapter() { @Override public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) { config.setBasePath("/api"); } }; }

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RepositoryRestConfigurer properties basePath defaultPageSize maxPageSize pageParamName limitParamName sortParamName defaultMediaType e.t.c.
Описание слайда:
RepositoryRestConfigurer properties basePath defaultPageSize maxPageSize pageParamName limitParamName sortParamName defaultMediaType e.t.c.

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Example @RepositoryRestResource public interface UserRepository extends JpaRepository<User, Long> {}
Описание слайда:
Example @RepositoryRestResource public interface UserRepository extends JpaRepository<User, Long> {}

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Supported http methods GET POST PUT DELETE HEAD OPTIONS
Описание слайда:
Supported http methods GET POST PUT DELETE HEAD OPTIONS

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User @Entity public class User { @Id @GeneratedValue private long userId; private String username; private int age; ...getters/setters }
Описание слайда:
User @Entity public class User { @Id @GeneratedValue private long userId; private String username; private int age; ...getters/setters }

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How to access repository? The path is derived from the uncapitalized, pluralized, simple class name of the domain class being managed. User -> …/users …/users/3
Описание слайда:
How to access repository? The path is derived from the uncapitalized, pluralized, simple class name of the domain class being managed. User -> …/users …/users/3

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GET request …/users // find all users using default pagination. Returns first page …/users?page=1 // find all users using default pagination. Returns second page …/users?size=2 // find all users using pagination by 2. returns first page.
Описание слайда:
GET request …/users // find all users using default pagination. Returns first page …/users?page=1 // find all users using default pagination. Returns second page …/users?size=2 // find all users using pagination by 2. returns first page.

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POST request …/users body: { “username” : “test”, “age” : “1” }
Описание слайда:
POST request …/users body: { “username” : “test”, “age” : “1” }

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PUT request …/users/1 body: { “username” : “test”, “age” : “1” }
Описание слайда:
PUT request …/users/1 body: { “username” : “test”, “age” : “1” }

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DELETE request …/users/1
Описание слайда:
DELETE request …/users/1

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Custom database query @RepositoryRestResource public interface UserRepository extends JpaRepository<User, Long> { Collection<User> findByAge(@Param(“age”) int age); }
Описание слайда:
Custom database query @RepositoryRestResource public interface UserRepository extends JpaRepository<User, Long> { Collection<User> findByAge(@Param(“age”) int age); }

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Custom database query call .../users/search/findByAge?age=10
Описание слайда:
Custom database query call .../users/search/findByAge?age=10

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