What I am basically trying to do is to run a query and put the result within the object of the class Account
. What is very important to emphasize is that the query performs a JOIN between 2 tables THAT ARE NOT MAPPED as @Entity
. So how can I do that?
This is my FooRepository.java class
@Repository
public interface FooRepository extends JpaRepository<Foo, Long> {
Foo findById(Long id);
@Query(value = "SELECT Q1.ACCOUNT_NAME," +
"Q2.GROUP_NAME " +
"FROM USERS_DEV Q1\n" +
"JOIN USERS_GROUPS Q2 ON Q1.ACCOUNT_NAME = Q2.ACCOUNT_NAME\n" +
"WHERE LOWER(Q1.ACCOUNT_NAME) = 'john.pit'", nativeQuery = true)
List<Account> getAllAccounts();
So how can I change my query to get the desired result?
And here is my Account.java class
public class Account {
String samAccountName;
String groupName;
public Account(String accountName, String groupName) {
this.accountName = accountName;
this.groupName = groupName;
}
public String getAccountName() {
return accountName;
}
public void setAccountName(String accountName) {
this.accountName = accountName;
}
public String getGroupName() {
return groupName;
}
public void setGroupName(String groupName) {
this.groupName = groupName;
}
}
As an alternative you can use @NamedNativeQuery
with @SqlResultSetMapping
in the following way:
@Entity
@NamedNativeQuery(
name = "findAllAccounts",
query =
"SELECT " +
" Q1.ACCOUNT_NAME AS accountName, " +
" Q2.GROUP_NAME AS groupName " +
"FROM USERS_DEV Q1 " +
"JOIN USERS_GROUPS Q2 ON Q1.ACCOUNT_NAME = Q2.ACCOUNT_NAME " +
"WHERE LOWER(Q1.ACCOUNT_NAME) = 'john.pit'",
resultSetMapping = "findAllAccountsMapping"
)
@SqlResultSetMapping(
name = "findAllAccountsMapping",
classes = @ConstructorResult(
targetClass = Account.class,
columns = {
@ColumnResult(name="accountName"),
@ColumnResult(name="groupName"),
}
)
)
public class Foo {
// ...
}
and FooRepository
:
@Repository
public interface FooRepository extends JpaRepository<Foo, Long> {
@Query(name = "findAllAccounts", nativeQuery = true)
List<Account> getAllAccounts();
}
See hibernate documentation for additional details.