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  • 1.2M1 pizzashop sample script and MySQL

    Changing the JPA setup for the generated project from the pizzashop sample project script with "jpa setup --provider HIBERNATE --database MYSQL --databaseName pizzashop --userName sa", fails with
    [main] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
    org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExc eptionTranslationPostProcessor#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'entityManagerFactory' defined in file [/Users/mik/Documents/Kodkrigaren/Java/STS-2.7.1/spring-samples/pizzashop/target/classes/META-INF/spring/applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.MappingException: Foreign key (FKB7A02153835636DE: pizza_order_pizzas [pizza_order])) must have same number of columns as the referenced primary key (pizza_order [shop_city,shop_country,shop_name])
    I suppose something in the set up is not suited to MySQL, but I haven't identified it yet. Any ideas?

    Roo1.2M1, jdk 1.5, Mac OS X 10.5.8

  • #2
    Interestingly using "jpa setup --provider ECLIPSELINK --database MYSQL --databaseName pizzashop --userName sa" works. So this seems to be something unique to Hibernate.
    To make sure I switched database again:"jpa setup --provider HIBERNATE --database H2_IN_MEMORY ". The same error as before.
    I'm investigating Hibernate and composite primary keys, suspecting this is a known problem.

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    • #3
      I found this section in the Hibernate manual to be interesting: 5.1.2.1. Composite identifier.

      Comment


      • #4
        As can be read in the previous link to the Hibernate manual there seems to be a handful of solutions for using composite keys in Hibernate. I have a such a business case coming up, but I'm leaning on making the composite keys to be just entity attributes and not rely on these for relations.
        For the pizzashop project I decided it was not interesting to really solve at the moment, so I adjusted the roo script for Hibernate and MySQL, created a database in MySQL with name "pizzashop" and granted user "sa" the appropriate permissions and then removed the composite key parts from the original pizzashop.roo script (changed lines in bold):
        Code:
        // Create a new project
        project com.springsource.pizzashop
        
        // Setup JPA persistence using Hibernate and MySQL
        jpa setup --provider HIBERNATE --database MYSQL --databaseName pizzashop --userName sa
        
        // Create domain entities
        entity --class ~.domain.Base --activeRecord false --testAutomatically
        field string --fieldName name --sizeMin 2 --notNull
        
        entity --class ~.domain.Topping --activeRecord false --testAutomatically
        field string --fieldName name --sizeMin 2 --notNull
        
        entity --class ~.domain.Pizza --activeRecord false --testAutomatically
        field string --fieldName name --notNull --sizeMin 2
        field number --fieldName price --type java.math.BigDecimal
        field set --fieldName toppings --type ~.domain.Topping
        field reference --fieldName base --type ~.domain.Base
        
        entity --class ~.domain.PizzaOrder --testAutomatically --activeRecord false
        field string --fieldName name --notNull --sizeMin 2
        field string --fieldName address --sizeMax 30
        field number --fieldName total --type java.math.BigDecimal
        field date --fieldName deliveryDate --type java.util.Date
        field set --fieldName pizzas --type ~.domain.Pizza
        
        field string --fieldName shopCountry 
        field string --fieldName shopCity
        field string --fieldName shopName
        
        // Define a repository layer for persistence
        repository jpa --interface ~.repository.ToppingRepository --entity ~.domain.Topping
        repository jpa --interface ~.repository.BaseRepository --entity ~.domain.Base
        repository jpa --interface ~.repository.PizzaRepository --entity ~.domain.Pizza
        repository jpa --interface ~.repository.PizzaOrderRepository --entity ~.domain.PizzaOrder
        
        // Define a service/facade layer
        service --interface ~.service.ToppingService --entity ~.domain.Topping
        service --interface ~.service.BaseService --entity ~.domain.Base
        service --interface ~.service.PizzaService --entity ~.domain.Pizza
        service --interface ~.service.PizzaOrderService --entity ~.domain.PizzaOrder
        
        // Offer JSON remoting for all domain types trough Spring MVC
        json all --deepSerialize
        web mvc json setup
        web mvc json all
        
        web mvc setup
        web mvc all --package ~.web
        
        // Example scripts for JSON remoting:
        // curl -i -X POST -H "Content-Type: application/json" -H "Accept: application/json" -d '{name: "Thin Crust"}' http://localhost:8080/pizzashop/bases
        // curl -i -X POST -H "Content-Type: application/json" -H "Accept: application/json" -d '[{name: "Cheesy Crust"},{name: "Thick Crust"}]' http://localhost:8080/pizzashop/bases/jsonArray
        // curl -i -X POST -H "Content-Type: application/json" -H "Accept: application/json" -d '[{name: "Fresh Tomato"},{name: "Prawns"},{name: "Mozarella"},{name: "Bogus"}]' http://localhost:8080/pizzashop/toppings/jsonArray
        // curl -i -X DELETE -H "Accept: application/json" http://localhost:8080/pizzashop/toppings/7
        // curl -i -X PUT -H "Content-Type: application/json" -H "Accept: application/json" -d '{id:6,name:"Mozzarella",version:1}' http://localhost:8080/pizzashop/toppings
        // curl -i -H "Accept: application/json" http://localhost:8080/pizzashop/toppings
        // curl -i -H "Accept: application/json" http://localhost:8080/pizzashop/toppings/6
        // curl -i -X POST -H "Content-Type: application/json" -H "Accept: application/json" -d '{name:"Napolitana",price:7.5,base:{id:1},toppings:[{name: "Anchovy fillets"},{name: "Mozzarella"}]}' http://localhost:8080/pizzashop/pizzas
        // curl -i -X POST -H "Content-Type: application/json" -H "Accept: application/json" -d '{name:"Stefan",total:7.5,address:"Sydney, AU",deliveryDate:1314595427866,id:{shopCountry:"AU",shopCity:"Sydney",shopName:"Pizza Pan 1"},pizzas:[{id:8,version:1}]}' http://localhost:8080/pizzashop/pizzaorders

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