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1   package rest.db1;
2   
3   import static java.util.Collections.singletonMap;
4   
5   import javax.persistence.EntityManagerFactory;
6   import javax.sql.DataSource;
7   
8   import org.springframework.beans.factory.annotation.Qualifier;
9   import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
10  import org.springframework.boot.context.properties.ConfigurationProperties;
11  import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
12  import org.springframework.context.annotation.Bean;
13  import org.springframework.context.annotation.Configuration;
14  import org.springframework.context.annotation.Primary;
15  import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
16  import org.springframework.orm.jpa.JpaTransactionManager;
17  import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
18  import org.springframework.transaction.PlatformTransactionManager;
19  import org.springframework.transaction.annotation.EnableTransactionManagement;
20  
21  import com.zaxxer.hikari.HikariDataSource;
22  
23  @Configuration
24  @EnableJpaRepositories(entityManagerFactoryRef = "firstEntityManagerFactory",
25      transactionManagerRef = "firstTransactionManager", basePackages = "rest.db1")
26  @EnableTransactionManagement
27  public class FirstDsConfig {
28    @Primary
29    @Bean
30    @ConfigurationProperties("app.datasource.first")
31    public DataSourceProperties firstDataSourceProperties() {
32      return new DataSourceProperties();
33    }
34  
35    @Primary
36    @Bean
37    @ConfigurationProperties("app.datasource.first.configuration")
38    public HikariDataSource firstDataSource() {
39      return firstDataSourceProperties().initializeDataSourceBuilder().type(HikariDataSource.class)
40          .build();
41    }
42  
43    @Primary
44    @Bean
45    public LocalContainerEntityManagerFactoryBean firstEntityManagerFactory(
46        EntityManagerFactoryBuilder builder, @Qualifier("firstDataSource") DataSource dataSource) {
47      return builder.dataSource(dataSource).packages("rest.db1").persistenceUnit("firstDb")
48          .properties(singletonMap("hibernate.hbm2ddl.auto", "create-drop")).build();
49    }
50  
51    @Primary
52    @Bean
53    public PlatformTransactionManager firstTransactionManager(
54        @Qualifier("firstEntityManagerFactory") EntityManagerFactory firstEntityManagerFactory) {
55      return new JpaTransactionManager(firstEntityManagerFactory);
56    }
57  }