I have the following two tables in my database:
CREATE TABLE ACCOUNT (
ID NUMBER(19, 0) NOT NULL,
AA_ID VARCHAR2(11 CHAR),
BB_ID VARCHAR2(8 CHAR),
STATUS NUMBER(1, 0) DEFAULT 1,
CREATED_AT TIMESTAMP(6) NOT NULL,
LAST_MODIFIED_AT TIMESTAMP(6)
) TABLESPACE $tbsp;
CREATE TABLE MOBILE_INSTANCE (
ID NUMBER(19, 0) NOT NULL,
ACCOUNT_ID NUMBER(19, 0) NOT NULL,
APPLICATION_ID VARCHAR2(36 CHAR) NOT NULL,
TOKEN VARCHAR2(255 CHAR) NOT NULL,
DEVICE VARCHAR2(13 CHAR),
STATUS VARCHAR2(10 CHAR),
CREATED_AT TIMESTAMP(6) NOT NULL,
LAST_MODIFIED_AT TIMESTAMP(6)
) TABLESPACE $tbsp;
And the connection between them:
ALTER TABLE MOBILEBANK_INSTANCE ADD CONSTRAINT FK_MOBILEBANKINSTANCE_ACCOUNT FOREIGN KEY (ACCOUNT_ID) REFERENCES ACCOUNT(ID);
So far, this is working like a charm...
Via JPA, I have created the entites for these tables - please see the following snippet of my entities:
In the MobileInstance entity I have marked the #ManyToOne connection as following:
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "ACCOUNT_ID")
private Account accountId;
And this is how it looks like in my Account entity class:
#OneToMany(mappedBy = "accountId", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
private List<MobileInstance> mobileInstanceList = new ArrayList<>();
As you see, the accountId field (which is in the Account table actually a Long value) is marked as an Account object.
Later on, when I have already an account object, I whish the create a mobileInstance object as well, with the appropiate account ID.
But when I call:
mobileInstance.setAccountId
it requieres an account parameter... When I assigne one to it and try to save it in the DB, I got the error:
ERROR SqlExceptionHelper:131 - ORA-00904: "APPLICATION_ID": invalid identifier
I assume, it is because the Application ID field in the Database is a Number field, and I assigne to it a whole Account object which I do not want to change to Long..
Is there a way the code to recognize that only use the primary key of my Account table?
Related
I'm running integrity tests on a Spring Boot 2.1.4 project with JUnit 4.12 and I have run into a problem running a save (Comment) endpoint test in a bidirectional relationship of type #OneToOne - #ManyToOne when I use the #JsonManagedReference and #JsonBackReference annotations to avoid recursion.
The problem is that when I run the test it isn't converting the parent (Author class) of the relation to JSON, only the child (Comment class) is converted, but with none reference to parent.
Object of class Comment received to convert it to JSON
Result of convert the object of class Comment to JSON, where is the parent?
DDL of tables in a H2 Database
CREATE TABLE IF NOT EXISTS `author` (
`id` INT NOT NULL AUTO_INCREMENT,
`name` VARCHAR(255) NOT NULL,
`created` TIMESTAMP NULL,
`modified` TIMESTAMP NULL,
PRIMARY KEY (`id`)
) ENGINE = InnoDB;
CREATE TABLE IF NOT EXISTS `comment` (
`id` INT NOT NULL AUTO_INCREMENT,
`review` VARCHAR(255) NOT NULL,
`author_id` INT NOT NULL,
`created` TIMESTAMP NULL,
`modified` TIMESTAMP NULL,
PRIMARY KEY (`id`),
INDEX `fk_comment_author_idx` (`author_id` ASC),
CONSTRAINT `fk_comment_author` FOREIGN KEY (`author_id`) REFERENCES `author` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE = InnoDB;
Parent entity
#JsonManagedReference("author_comment")
#OneToMany(mappedBy = "author", cascade = {CascadeType.ALL}, orphanRemoval = true)
private List<Comment> comments = new ArrayList<>();
Child entity
#JsonBackReference("author_comment")
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "author_id")
private Author author;
My POJO is using JPA and when I apply unique value in the column is not working for me I tried to use the UniqueConstraint and also not working for me .
below is my code
#Entity
#Table(name = "users", uniqueConstraints={#UniqueConstraint(columnNames = {"user_id"}),#UniqueConstraint(columnNames = {"username"}),#UniqueConstraint(columnNames = {"email"})})
public class Users {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name="user_id",unique=true,nullable = false)
private int UserId;
#Column(name = "username" ,unique=true,nullable = false)
private String Username;
#Column(name = "email",unique=true ,nullable = false)
private String email;
#Column(name = "firstname",nullable = false)
private String firstname;
#Column(name = "lastname", nullable = false)
private String lastname;
#Column(name = "password", nullable = false)
private String password;
#Column(name = "active")
private int active;
#ManyToMany(cascade=CascadeType.ALL)
#JoinTable(name="user_role", joinColumns=#JoinColumn(name="user_id"), inverseJoinColumns=#JoinColumn(name="role_id"))
private Set<Role> roles;
below is the generated table in the database (MySQL)
| users | CREATE TABLE users (
user_id int(11) NOT NULL,
username varchar(255) NOT NULL,
active int(11) DEFAULT NULL,
email varchar(255) NOT NULL,
firstname varchar(255) NOT NULL,
lastname varchar(255) NOT NULL,
password varchar(255) NOT NULL,
PRIMARY KEY (user_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 |
Hibernate log after spring start
Hibernate: create table users (user_id integer not null, username varchar(255) not null, active integer, email varchar(255) not null, firstname varchar(255) not null, lastname varchar(255) not null, password varchar(255) not null, primary key (user_id)) engine=InnoDB
Hibernate: alter table users drop index UKfnranlqhubvw04boopn028e6
Hibernate: alter table users add constraint UKfnranlqhubvw04boopn028e6 unique (username, email)
Hibernate: alter table users drop index UK_r43af9ap4edm43mmtq01oddj6
Hibernate: alter table users add constraint UK_r43af9ap4edm43mmtq01oddj6 unique (username)
Hibernate: alter table users drop index UK_6dotkott2kjsp8vw4d0m25fb7
Try like this:
#Entity
#Table(name="users",uniqueConstraints=#UniqueConstraint(columnNames={"user_id","username","email"}))
public class Users {
Apparently there's nothing wrong with this code. unique=true in #Column is a shortcut for #UniqueConstraint(columnNames = {"user_id"} and other particular constraints. You could only use one of them except for multiple unique constraints.
But if you are confused why the generated CREATE TABLE doesn't contain these unique constraints, check the log, you can find alter table commands just after CREATE TABLE.
In this case commands could be,
alter table users add constraint UK_some_id unique (username)
alter table users add constraint UK_some_id unique (email)
Hope this help.
I had the same problem here, set length to your unique columns.. It worked here. Do
#Column(name = "userName", length = 50, unique = true)
if you set unique in #Column
that's mean let your JPA provider create the database for you - it will create the unique constraint on the specified column.
But after creating a database, or you alter it once created,
then unique doesn't have any effect
in jpa the id is already unique so to make username and email unique add the statement
unique=true
to the corresponding #Column annotation.
PS : remember the unique cannot be null when insert new item you should drop the table before run the application and remove uniqueConstraints in table annotation
Set the column to have the fixed length make it work because mysql size for unique constrains limited to 1000 bytes
#Column(name = "username", length = 200, unique = true)
Use #javax.persistence.Column(unique = true).
Dont forget to restart your application.
&& you cant alter your column if there are still duplicated values in it.
drop your table, and recreate it with your generated ddl. (if ure not usin springboot)
&& if youre using springboot, go to your application.properties & set spring.jpa.hibernate.ddl-auto to update
This updates the schema if necessary.
The column needs to be non nullable for it to be unique!
#Column(unique = true) will NOT work
#Column(unique = true, nullable = false) will work
If the database or schema already exists before adding the uniqueConstraints then it won't work.
So drop the database or schema and run the application to create new database with these uniqueConstraints
DROP DATABASE database_name;
I have enum class Role. I want to store this values in mysql DB in the table roles.
public enum Role {
ADMIN,
USER,
TRAINER
}
table roles
id role
1 ADMIN
2 USER
3 TRAINER
I use following code for table mapping
#Enumerated(EnumType.ORDINAL)
#Column(name = "role_id")
private Role role;
table users
create TABLE users(
id INTEGER UNSIGNED PRIMARY KEY AUTO_INCREMENT NOT NULL,
name VARCHAR(30) NOT NULL,
email VARCHAR(20),
password VARCHAR(20),
registered TIMESTAMP DEFAULT now(),
role_id INTEGER UNSIGNED NOT NULL,
enabled BOOL DEFAULT TRUE,
FOREIGN KEY (role_id) REFERENCES roles(id)
)ENGINE=INNODB;
But in Java enum ordinal numbers start from 0, so 0 = ADMIN, 1 = USER, 2 = TRAINER and when i try to set user Role.ADMIN i receive an exception because there are no elements in DB with such number (0).
Im getting this error from hibernate when trying to do a criteria search
ERROR org.hibernate.property.access.spi.GetterMethodImpl - HHH000122:
IllegalArgumentException in class: packagename.domain.User, getter method of
property: id
For this criteria search
#Override
public List<Story> findStoryByAuthor(Long userId) throws Exception {
Criteria criteria = currentSession().createCriteria(Story.class);
criteria.add(Restrictions.eq("author", userId));
criteria.setResultTransformer(CriteriaSpecification.DISTINCT_ROOT_ENTITY);
List<?> stories = criteria.list();
return (List<Story>) stories;
}
We are finding stories via the user that created it so here are the property definitions. Trying not to clutter this so if you guys want to see more code let me know.
Story has a Many to One relationship with User
#ManyToOne(fetch = FetchType.LAZY, targetEntity = User.class)
#JoinColumn(name = "author_user_id", referencedColumnName = "id")
public User getAuthor() {
return author;
}
Users have no reference to story but its id property is correctly annotated
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
public Long getId() {
return id;
}
And lastly the database structure
Stories Table
id bigint NOT NULL DEFAULT nextval('stories_seq'::regclass),
parent_id bigint,
author_user_id bigint NOT NULL,
title character varying(100) NOT NULL,
dt_created timestamp without time zone NOT NULL,
dt_last_updated timestamp without time zone NOT NULL DEFAULT now_utc(),
thumbs_up bigint DEFAULT 0,
thumbs_down bigint DEFAULT 0,
CONSTRAINT pk_stories PRIMARY KEY (id),
CONSTRAINT fk_stories_author_user_id_users FOREIGN KEY (author_user_id)
REFERENCES public.users (id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION
Users Table
id bigint NOT NULL DEFAULT nextval('users_seq'::regclass),
first_name character varying(255),
last_name character varying(255),
email character varying(255) NOT NULL,
user_name character varying(255),
password character varying(255),
phone character varying(255),
address character varying(500),
city character varying(255),
state character varying(255),
zip integer,
preferred_language character varying(255),
note character varying(32000),
active boolean DEFAULT true,
active_paid boolean DEFAULT false,
CONSTRAINT pk_user_id PRIMARY KEY (id),
CONSTRAINT users_unique_fields UNIQUE (email, user_name)
FYI
all basic dao functions (add, update and delete) work (full unit test coverage). I have another criteria search, almost identical but searches on the email field and works fine. so this error is something with the user reference
Please try with
criteria.add(Restrictions.eq("author.id", userId));
author property is of class User so you need to reference its id property for the equality.
I want to persist a objects by using JPA in a MYSQL-database. Here ist my create script:
CREATE TABLE toolboxAccount (
idtoolboxAccount INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
username VARCHAR(30) NOT NULL ,
password_2 VARCHAR(30) NOT NULL ,
PRIMARY KEY(idtoolboxAccount));
CREATE TABLE config (
idconfig INT NOT NULL AUTO_INCREMENT,
toolboxAccount_idtoolboxAccount INTEGER UNSIGNED NOT NULL ,
defaultExportPath VARCHAR(255) NULL ,
PRIMARY KEY(idconfig) ,
INDEX config_FKIndex1(toolboxAccount_idtoolboxAccount),
FOREIGN KEY(toolboxAccount_idtoolboxAccount)
REFERENCES toolboxAccount(idtoolboxAccount)
ON DELETE CASCADE
ON UPDATE CASCADE);
CREATE TABLE connection (
idconnection INT NOT NULL AUTO_INCREMENT,
toolboxAccount_idtoolboxAccount INTEGER UNSIGNED NOT NULL ,
url VARCHAR(255) NULL ,
username VARCHAR(30) NULL ,
password_2 VARCHAR(30) NULL ,
site VARCHAR(30) NULL ,
PRIMARY KEY(idconnection) ,
INDEX connection_FKIndex1(toolboxAccount_idtoolboxAccount),
FOREIGN KEY(toolboxAccount_idtoolboxAccount)
REFERENCES toolboxAccount(idtoolboxAccount)
ON DELETE CASCADE
ON UPDATE CASCADE);
CREATE TABLE export (
idexport INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
connection_idconnection INT NOT NULL ,
nameOfExportZIP VARCHAR(255) NOT NULL ,
PRIMARY KEY(idexport) ,
INDEX export_FKIndex1(connection_idconnection),
FOREIGN KEY(connection_idconnection)
REFERENCES connection(idconnection)
ON DELETE CASCADE
ON UPDATE CASCADE);
The classes are
ToolboxaccountEntity
#Entity
#Table(name = "toolboxaccount", schema = "", catalog = "toolboxtest")
public class ToolboxaccountEntity {
#Id
#GeneratedValue(generator="my_seq")
#SequenceGenerator(name="my_seq",sequenceName="MY_SEQ", allocationSize=1)
private long idtoolboxAccount;
private String username;
private String password_2;
#OneToOne(cascade = CascadeType.PERSIST)
private ConfigEntity configEntity;
#OneToMany(cascade = CascadeType.PERSIST)
private List<ConnectionEntity> connections;
public List<ConnectionEntity> getConnections() {
return connections;
}
public void setConnections(List<ConnectionEntity> connections) {
this.connections = connections;
}
...
ConnectionEnity
#Entity
#Table(name = "connection", schema = "", catalog = "toolboxtest")
public class ConnectionEntity {
#Id
#GeneratedValue(generator="my_seq")
#SequenceGenerator(name="my_seq",sequenceName="MY_SEQ", allocationSize=1)
private long idconnection;
private String url;
private String username;
private String password_2;
private String site;
#Column(name = "idconnection")
public long getIdconnection() {
return idconnection;
}
public void setIdconnection(int idconnection) {
this.idconnection = idconnection;
}
...
The persisting of ToolboxAccountEntity works but when I add a ConnectionEntity I get following error:
Exception in thread "main" javax.persistence.RollbackException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.6.0.v20150309-bf26070): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`toolboxtest`.`connection`, CONSTRAINT `connection_ibfk_1` FOREIGN KEY (`toolboxAccount_idtoolboxAccount`) REFERENCES `toolboxaccount` (`idtoolboxAccount`) ON DELETE CASCADE ON UPDATE CASCADE)
Error Code: 1452
Call: INSERT INTO toolboxtest.connection (PASSWORD_2, SITE, URL, USERNAME) VALUES (?, ?, ?, ?)
bind => [4 parameters bound]
2 things:
1) If you want to make a insert operation, make sure that the record doesnt exists in the Database.
2) If you want to make an update operation, make sure that the record exist in the database.
3) Remember that the records has to be well relationships, primary key, foreign key.
That kind of error, is very common when a record already exists.
Regards! Tell us if you correct your issue