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jOOQ 3.11 Released With 4 New Databases, Implicit Joins, Diagnostics, and Much More

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Today, jOOQ 3.11 has been released with support for 4 new databases, implicit joins, diagnostics, and much more

New Databases Supported

At last, 4 new SQL dialects have been added to jOOQ! These are:

jOOQ Professional Edition

jOOQ Enterprise Edition

Implicit Joins

One of the really cool features in ORMs like Hibernate, Doctrine, and others, is
the capability of using a relationship graph notation to access another entity’s
columns through what is often called “implicit joins”.

Instead of explicitly joining a to-one relationship to access its columns:

SELECT author.first_name, author.last_name, book.title
FROM book
JOIN author ON book.author_id = author.id

We would like to be able to access those columns directly, using this notation:

SELECT book.author.first_name, book.author.last_name, book.title
FROM book

The join is implied and should be added implicitly. jOOQ now allows for this to
happen when you use the code generator:

ctx.select(BOOK.author().FIRST_NAME, BOOK.author().LAST_NAME, BOOK.TITLE)
   .from(BOOK)
   .fetch();

When rendering this query, the implicit join graph will be calculated on the fly
and added behind the scenes to the BOOK table. This works for queries of
arbitrary complexity and on any level of nested SELECT.

More details in this blog post:

Type Safe Implicit JOIN Through Path Navigation in jOOQ 3.11

DiagnosticsListener SPI

A new DiagnosticsListener SPI has been added to jOOQ:
https://github.com/jOOQ/jOOQ/issues/5960

The purpose of this SPI is to sanitise your SQL language, JDBC and jOOQ API
usage. Listeners can listen to events such as:

The great thing about this SPI is that it can be exposed to clients through the
JDBC API, in case of which the diagnostics feature can reverse engineer your
JDBC or even JPA generated SQL. Ever wanted to detect N+1 queries from
Hibernate? Pass those Hibernate-generated queries through this SPI.

Want to find missing bind variables leading to cursor cache contention or SQLi?
Let jOOQ find similar SQL statements and report them. E.g.

Or also:

Anonymous blocks

Many databases support anonymous blocks to run several statements in a single
block scope. For example, Oracle:

DECLARE
  l_var NUMBER(10);
BEGIN
  l_var := 10;
  dbms_output.put_line(l_var);
END;

jOOQ now supports the new org.jooq.Block API to allow for wrapping DDL and DML
statements in such a block. This is a first step towards a future jOOQ providing
support for:

Parser

jOOQ’s parser support is an ongoing effort. This release has added support for
a lot of new SQL clauses and functions from various vendors and in various DDL
and DML statements.

The parser is now also exposed through a public website and API, where SQL can
be translated from one dialect to another:
https://www.jooq.org/translate

This website will help further drive jOOQ API development by helping to find
missing functionality that is used in real-world SQL.

Another way to access this API is through the new org.jooq.ParserCLI command
line tool. For example, run:

$ java -cp jooq-3.11.0.jar org.jooq.ParserCLI -f -t ORACLE -s "SELECT * FROM (VALUES(1),(2)) AS t(a)"

To get:

select *
from (
  (
    select null a
    from dual
    where 1 = 0
  )
  union all (
    select *
    from (
      (
        select 1
        from dual
      )
      union all (
        select 2
        from dual
      )
    ) t
  )
) t;

Formal Java 10 Support

jOOQ 3.11 is the first release that is formally integration tested with Java 10.
To use jOOQ with Java 10, use the Java 8 distribution which has not yet been
modularised, but contains Automatic-Module-Name specification to be forward
compatible with future, modularised jOOQ distributions.

Additionally, package names between jOOQ, jOOQ-meta, and jOOQ-codegen have been
cleaned up to prevent duplicate package names, and the JAXB dependency has been
added explicitly to the various artefacts.

Other great improvements

The complete list can be seen here:
https://www.jooq.org/notes/?version=3.11

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