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Spring Boot (Controllers (Mapping (PutMapping + (path = "{id}"),…

- - - - Tells Spring that a Method is used as a Postrequest (An Object is added via a service)
      - RequestBody
        
        Defines the Object where Properties (for ex. from Json) are inserted into
    - - For example JsonProperty + "name"
        
        Defines the Format of Properties (id, Name etc.)
    - - Method is used as a Get request (retrieves Data from Server)
      - Pathvariable
        
        Routes the Variable which is used for the Path, written in Constructor
    - - deleting Object by searching it via id and deleting the object related to it
      - PathVariable
    - - also using RequestBody
      - Pathvariable
      - updating an entity
- - - - To distinguish between different instances of an Interface, This is Annotated when the Interface is being passed in the Constructor
      - The name connects to the Repository with the same "name"
- - - - java -jar demo...jar
        
        starts Server!!!!
- - - - also define Dependencies in Pom.xml for Database
        
        groupid: org.postgresql artifactid:postgresql scope: runtime
        
        groupid: org.flywaydb artifactId: flyway-core
        
        group id: org.springframework.boot
        artifactid: spring-boot-starter-jdbc
    - - V1__PersonTable.sql
        
        CREATE TABLE person( id UUID NOT NULL PRIMARY KEY, name VARCHAR(100) NOT NULL);
- - - - return DataSourceBuilder.create().type(HikariDataSource.class).build();
- - - - add to Constructor results in :
        
        autowired : public PersonDataAccessService Constructor
    - - select all persons method:(){
        
        jdbcTemplate.query(query,i) -> { return new Person(UUID.fromString(resultSet.getString("id")),resultSet.getString("name")
      - final String query "query"