CODEWITHSUNDEEP
javasqlsqlitejooq
Chris Dutrow
Chris Dutrow

Reputation: 50372

JOOQ after executeInsert(), need to know the auto-generated ID

Using JOOQ (with sqlite3).

Have some code that looks like this: (Modified from example in the docs: https://www.jooq.org/doc/latest/manual/sql-execution/fetching/pojos/)

// A "mutable" POJO class
public class MyBook {
  public int id;
  public String title;
}

// Create a new POJO instance
MyBook myBook = new MyBook();
// myBook.id = 10; <-- Id is NOT set here because the database auto-generates it
myBook.title = "Animal Farm";

// Load a jOOQ-generated BookRecord from your POJO
BookRecord book = create.newRecord(BOOK, myBook);

// Insert it (explicitly)
create.executeInsert(book);

// What is value of the auto-generated id?

At this point, I need to know the auto-generated ID from the database.

Upvotes: 2

Views: 1291

Answers (1)

Chris Dutrow
Chris Dutrow

Reputation: 50372

Using executeInsert() does not seem to get the ID back:

// Insert it (explicitly)
create.executeInsert(book);

However using Record.store does:

book.store()

Here is how to go from POJO to Record so that the PJO can be stored and then get the updated POJO with the generted ID:

// A "mutable" POJO class
public class MyBook {
  public int id;
  public String title;
}

// Create a new POJO instance
MyBook myBook = new MyBook();
// myBook.id = 10; <-- Id is NOT set here because the database auto-generates it
myBook.title = "Animal Farm";

// Load a jOOQ-generated BookRecord from your POJO
BookRecord book = create.newRecord(BOOK, myBook);

// Insert it (implicitly) using the BookRecord instead of create.executeInsert()
book.store();            // <--- THIS IS THE KEY DIFFERENCE

// Get new Book POJO from the BookRecord
MyBook newBook = book.into(MyBook.class);

// This is also a handy function to get the Record as Map, 
//   which is easier to view in the debugger
Map<String, Object> bookMap = book.intoMap();

Upvotes: 2

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