Develop Reference

How can I create a schema with JOOQ?

I am trying to create a Vertica table with JOOQ 3.5.x:
Connection connection = create();
DSLContext dslContext = DSL.using(connection);
Field<String> myColumn = DSL.field("my_column", SQLDataType.VARCHAR);
Table table = DSL.tableByName("my_schema", "my_table");
dslContext.createTable(table)
.column(myColumn, myColumn.getDataType())
.execute();
This fails on Schema "my_schema" does not exist.
I can solve it with:
dslContext.execute("create schema if not exists my_schema");
But is there a more elegant way to create a schema with JOOQ?

Currently JOOQ covers just a subset of the possible DDL statements that can be executed against a server and schema management is not yet included so you have to drop back to plan old SQL.
If you need to do a lot of DDL work you should start to look at the latest version 3.8 as this has extend the capabilities to include
DEFAULT column values in CREATE TABLE or ALTER TABLE statements
IF EXISTS in DROP statements
IF NOT EXISTS in CREATE statements
ALTER TABLE .. { RENAME | RENAME COLUMN | RENAME CONSTRAINT } statements
Version 3.6 added
ALTER TABLE ADD CONSTRAINT (with UNIQUE, PRIMARY KEY, FOREIGN KEY, CHECK)
ALTER TABLE DROP CONSTRAINT
CREATE TEMPORARY TABLE

Create table with primary key using jOOQ

jOOQ has CREATE TABLE syntax as stated in the documentation:
create.createTable(AUTHOR)
.column(AUTHOR.ID, SQLDataType.INTEGER)
.column(AUTHOR.FIRST_NAME, SQLDataType.VARCHAR.length(50))
.column(AUTHOR_LAST_NAME, SQLDataType.VARCHAR.length(50))
.execute();
I'm wondering how to define which column belongs to the primary key? So is there a way in jOOQ to create a CREATE TABLE statement with PRIMARY KEY information?
I'm specifically interested in a solution for SQLite, which doesn't have syntax to add the primary key afterwards, so I think in worst case I have to go to a DB specific solution?

This feature has been implemented for jOOQ 3.8: #4050.
create.createTable(AUTHOR)
.column(AUTHOR.ID, SQLDataType.INTEGER)
.column(AUTHOR.FIRST_NAME, SQLDataType.VARCHAR.length(50))
.column(AUTHOR_LAST_NAME, SQLDataType.VARCHAR.length(50))
.constraints(
constraint("PK_AUTHOR").primaryKey(AUTHOR.ID)
)
.execute();
Since jOOQ 3.6 (#3338), you can also use the ALTER TABLE statement to add a constraint after creating the table:
create.alterTable(AUTHOR)
.add(constraint("PK_AUTHOR").primaryKey(AUTHOR.ID))
.execute();

Hibernate : Netbeans genenerates additional POJO class

I got 3 tables :
Actor : ID, Name
Movie : ID, Title
Cast : Movie_ID, Actor_ID
Now I want to JOIN those 3 tables to get actor's list for each movie. It is simple SQL query, but it gets harder with Hibernate.
First of all, I created Cast table like this :
CREATE TABLE Cast (
Movie_id int PRIMARY KEY,
Actor_id int PRIMARY KEY,
FOREIGN KEY (Movie_id) REFERENCES Movie(ID),
FOREIGN KEY (Actor_id) REFERENCES Actor(ID)
)
Then, in Netbeans, I chose New -> Hibernate Mapping Files and POJO's from Database, I added ACTOR, MOVIE and CAST tables and IDE generated 4 instead of 3 classes : Actor.java, Movie.java, Cast.java and CastId.java. Class CastId.java seems to be well mapping of Cast table and Cast.java includes only CastId field and getters and setters.
I understand that this is the way Netbeans handles tables which keys have multiple attributes - but why , how does it help me ? Let's say that I want to SELECT * from Cast table which should return list of pairs(Movie_ID, Actor_ID). I can't make it, beacuase when running HQL command
from Cast
it gets only some single ID's - it's beacase Cast has only one field : CastId. On the other hand Netbeans generates CastId but doesn't CastId.hbm.xml, so I can't run 'from CastId' either. Am I missing something ? I'm newbie at Hibernate and would like to understand how this should be done.

INSERT with DEFAULT id doesn't work in PostgreSQL

I tried running this statement in Postgres:
insert into field (id, name) values (DEFAULT, 'Me')
and I got this error:
ERROR: null value in column "id" violates not-null constraint
I ended up having to manually set the id. The problem with that is when my app inserts a record I get a duplicate key error. I am building a java app using Play framework and ebean ORM. So the entire schema is generated automatically by ebean. In this case, what is the best practice for inserting a record manually into my db?
Edit:
Here is how I'm creating my Field class
#Entity
public class Field {
#id
public Long id;
public String name;
}
Edit:
I checked the field_seq sequence and it looks like this:
CREATE SEQUENCE public.field_seq INCREMENT BY 1 MINVALUE 1 MAXVALUE 9223372036854775807 START 1 CACHE 1;
Edit:
Here is the generated SQL in pgAdmin III:
CREATE TABLE field
(
id bigint NOT NULL,
created timestamp without time zone,
modified timestamp without time zone,
name character varying(255),
enabled boolean,
auto_set boolean,
section character varying(17),
input_type character varying(8),
user_id bigint,
CONSTRAINT pk_field PRIMARY KEY (id),
CONSTRAINT fk_field_user_3 FOREIGN KEY (user_id)
REFERENCES account (id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT ck_field_input_type CHECK (input_type::text = ANY (ARRAY['TEXT'::character varying, 'TEXTAREA'::character varying]::text[])),
CONSTRAINT ck_field_section CHECK (section::text = ANY (ARRAY['MAIN_CONTACT_INFO'::character varying, 'PARTICIPANT_INFO'::character varying]::text[]))
);
CREATE INDEX ix_field_user_3
ON field
USING btree
(user_id);

There is no column default defined for field.id. Since the sequence public.field_seq seems to exist already (but is not attached to field.id) you can fix it with:
ALTER SEQUENCE field_seq OWNED BY field.id;
ALTER TABLE field
ALTER COLUMN id SET DEFAULT (nextval('field_seq'::regclass));
Make sure the sequence isn't in use for something else, though.
It would be much simpler to create your table like this to begin with:
CREATE TABLE field
(
id bigserial PRIMARY KEY,
...
);
Details on serial or bigserial in the manual.
Not sure how the the Play framework implements this.

This works.
insert into field (id, name) values (nextval('field_seq'), "Me");

Entity class with DB showing Table with No primary key

I want to create an Entity class with database in Netbeans.
When I select a Data source jdbc/Ionbank (custom Jdbc connection Using JDBC-ODBC bridge with Ms SQL 2005 as database).
I see all the tables from that database.
All tables show no primary key, but they have primary keys in them.
Things I have tried :-
Created new 4-5 data source.
Created tables using query, and not the New table option.
Tried changing Odbc connection.
Tried using different drivers for the Jdbc-Odbc bridge like Sql4jdbc.jar, Jdts.jar.

I had same issue, but i solved it using the following: "New Entity Classes from Database" cannot process some tables, saying "no primary key"
A quote from that link helped me:
The problem will happen if you have foreign keys where upper case and lower case table names don't match the referenced table's definition.
For instance:
create table OkTable (
id int not null auto_increment
, primary key (id)
);
create table MisunderstoodTable(
id int not null auto_increment
oktable int not null
, primary key (id)
, foreign key ok (oktable) references oktable (id)
);
The MisunderstoodTable has a foreign key where the target table name doesn't match the lower/uppercase name of the referenced table.
To avoid this problem, just make sure you type your foreign key definitions while matching upper/lower casing for the targeted table.