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Hibernate JPA DB2 Foreign key based on composite unique key

I have 2 tables parent and child, parent as 1 Primary Key and a composite unique key(Combination of 2 columns[UN_KEY1, UN_KEY2]) . Now in the child table i refer these 2 columns as foreign keys. When i try to generate the entity in eclipse it show Many to one relationship and displays the parent columns. But when i generate these two columns are not generated in the Parent Entity. How to do transaction like add, update, delete in these entity without those columns
Table
--drop table "TBL_PARENT";
CREATE TABLE "TBL_PARENT"(
"S_ID" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY(START WITH 1, INCREMENT BY 1, NO MINVALUE, NO MAXVALUE, CACHE 20),
"UN_KEY1" Integer NOT NULL,
"UN_KEY2" Smallint NOT NULL,
"SOME_COL1" Integer
);
-- Add keys for table TBL_PARENT
ALTER TABLE "TBL_PARENT" ADD CONSTRAINT "TBL_PARENTKEY3" PRIMARY KEY ("S_ID");
ALTER TABLE "TBL_PARENT" ADD CONSTRAINT "TBL_PARENTKey4" UNIQUE ("UN_KEY1","UN_KEY2");
--drop table "TBL_PARENT";
CREATE TABLE "TBL_CHILD"(
"S_ID" Integer NOT NULL GENERATED ALWAYS AS IDENTITY(START WITH 1, INCREMENT BY 1, NO MINVALUE, NO MAXVALUE, CACHE 20),
"UN_KEY1" Integer,
"UN_KEY2" Integer,
"SOME_COL2" Integer
);
ALTER TABLE "TBL_CHILD" ADD CONSTRAINT "TBL_CHILD_KEY3" PRIMARY KEY ("S_ID");
ALTER TABLE "TBL_CHILD" ADD CONSTRAINT "TBL_CHILD_FK" FOREIGN KEY ("UN_KEY1", "UN_KEY2") REFERENCES "TBL_PARENT" ("UN_KEY1", "UN_KEY2");
Generated Code:
#Entity
#Table(name="TBL_PARENT")
#NamedQuery(name="TblParent.findAll", query="SELECT t FROM TblParent t")
public class TblParent implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#Column(name="S_ID")
private int sId;
#Column(name="SOME_COL1")
private int someCol1;
//bi-directional many-to-one association to TblChild
#OneToMany(mappedBy="tblParent")
private Set<TblChild> tblChilds;
public TblParent() {
}
public int getSId() {
return this.sId;
}
public void setSId(int sId) {
this.sId = sId;
}
public int getSomeCol1() {
return this.someCol1;
}
public void setSomeCol1(int someCol1) {
this.someCol1 = someCol1;
}
public Set<TblChild> getTblChilds() {
return this.tblChilds;
}
public void setTblChilds(Set<TblChild> tblChilds) {
this.tblChilds = tblChilds;
}
public TblChild addTblChild(TblChild tblChild) {
getTblChilds().add(tblChild);
tblChild.setTblParent(this);
return tblChild;
}
public TblChild removeTblChild(TblChild tblChild) {
getTblChilds().remove(tblChild);
tblChild.setTblParent(null);
return tblChild;
}
}
#Entity
#Table(name="TBL_CHILD")
#NamedQuery(name="TblChild.findAll", query="SELECT t FROM TblChild t")
public class TblChild implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#Column(name="S_ID")
private int sId;
#Column(name="SOME_COL2")
private int someCol2;
//bi-directional many-to-one association to TblParent
#ManyToOne
#JoinColumns({
#JoinColumn(name="UN_KEY1", referencedColumnName="UN_KEY1"),
#JoinColumn(name="UN_KEY2", referencedColumnName="UN_KEY2")
})
private TblParent tblParent;
public TblChild() {
}
public int getSId() {
return this.sId;
}
public void setSId(int sId) {
this.sId = sId;
}
public int getSomeCol2() {
return this.someCol2;
}
public void setSomeCol2(int someCol2) {
this.someCol2 = someCol2;
}
public TblParent getTblParent() {
return this.tblParent;
}
public void setTblParent(TblParent tblParent) {
this.tblParent = tblParent;
}
}

Add the following to TblParent object
#Column(name = "UN_KEY1")
private int uniqueKey1;
#Column(name = "UN_KEY2")
private int uniqueKey2;
When creating a new object you will be doing the following
TblParent p = new TblParent();
p.setSId(1);
p.setSomeCol1(12);
p.setUniqueKey1(12);
p.setUniqueKey2(14);
p.setTblChilds(new HashSet<TblChild>());
TblChild c = new TblChild();
c.setSId(1);
c.setSomeCol2(14);
c.setTblParent(p);
p.getTblChilds.add(c);
When you create this parent object the framework will automatically add the foreign key values to TblChild table.

one to many hibernate

Hi I am trying to do one to many insert but I am having problems.
I have two tables:
CREATE TABLE users_app (
user_id int UNSIGNED NOT NULL AUTO_INCREMENT,
user_number varchar(45) NOT NULL default '0',
user_password varchar(45) NOT NULL default '0',
os int(1) unsigned NOT NULL,
token varchar(500) NOT NULL,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=20 DEFAULT CHARSET=utf8;
CREATE TABLE user_app_devices(
id int AUTO_INCREMENT PRIMARY KEY,
user_id int UNSIGNED NOT NULL,
device_name varchar(45) NOT NULL,
FOREIGN KEY (user_id) REFERENCES users_app (user_id)
)ENGINE=InnoDB CHARSET=utf8;
My classes:
#Entity
#Table(name="user_app_devices")
public class UserAppDevice implements Serializable {
private static final long serialVersionUID = 1L;
#Id
private int id;
#Column(name="device_name")
private String deviceName;
//bi-directional many-to-one association to UsersApp
#ManyToOne
#JoinColumn(name="user_id")
private UsersApp usersApp;
public UserAppDevice() {
}
public int getId() {
return this.id;
}
public void setId(int id) {
this.id = id;
}
public String getDeviceName() {
return this.deviceName;
}
public void setDeviceName(String deviceName) {
this.deviceName = deviceName;
}
public UsersApp getUsersApp() {
return this.usersApp;
}
public void setUsersApp(UsersApp usersApp) {
this.usersApp = usersApp;
}
}
#Entity
#Table(name="users_app")
public class UsersApp implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#Column(name="user_id")
private int userId;
private int os;
private String token;
#Column(name="user_number")
private String userNumber;
#Column(name="user_password")
private String userPassword;
//bi-directional many-to-one association to UserAppDevice
#OneToMany(mappedBy="usersApp")
private List<UserAppDevice> userAppDevices;
public UsersApp() {
}
public int getUserId() {
return this.userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public int getOs() {
return this.os;
}
public void setOs(int os) {
this.os = os;
}
public String getToken() {
return this.token;
}
public void setToken(String token) {
this.token = token;
}
public String getUserNumber() {
return this.userNumber;
}
public void setUserNumber(String userNumber) {
this.userNumber = userNumber;
}
public String getUserPassword() {
return this.userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public List<UserAppDevice> getUserAppDevices() {
return this.userAppDevices;
}
public void setUserAppDevices(List<UserAppDevice> userAppDevices) {
this.userAppDevices = userAppDevices;
}
public UsersApp(int os, String token, String userNumber, String userPassword) {
this.os = os;
this.token = token;
this.userNumber = userNumber;
this.userPassword = userPassword;
}
I want to add new user with device
I try this code:
Session session = (Session) em.getDelegate();
session.beginTransaction();
UsersApp user = new UsersApp(os, token, userNumber, userPassword);
session.save(user);
UserAppDevice ud = new UserAppDevice();
ud.setUsersApp(user);
ud.setDeviceName(device);
session.save(ud);
session.getTransaction().commit();
but I am facing exception:
13:16:48,516 WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http--0.0.0.0-8080-3) SQL Error: 1452, SQLState: 23000
13:16:48,517 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http--0.0.0.0-8080-3) Cannot add or update a child row: a foreign key constraint fails (`application`.`user_a
pp_devices`, CONSTRAINT `user_app_devices_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users_app` (`user_id`))
13:16:48,520 ERROR [org.jboss.as.ejb3.tx.CMTTxInterceptor] (http--0.0.0.0-8080-3) javax.ejb.EJBTransactionRolledbackException: Cannot add or update a child row: a foreign key const
raint fails (`application`.`user_app_devices`, CONSTRAINT `user_app_devices_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users_app` (`user_id`))
13:16:48,524 ERROR [org.jboss.ejb3.invocation] (http--0.0.0.0-8080-3) JBAS014134: EJB Invocation failed on component DeviceRegisterDAOImpl for method public abstract void com.break
id.ejb.model.DeviceRegisterDAO.add(int,java.lang.String,java.lang.String,java.lang.String,java.lang.String): javax.ejb.EJBTransactionRolledbackException: Cannot add or update a chi
ld row: a foreign key constraint fails (`application`.`user_app_devices`, CONSTRAINT `user_app_devices_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users_app` (`user_id`))
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleInCallerTx(CMTTxInterceptor.java:139) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInCallerTx(CMTTxInterceptor.java:204) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:306) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:190) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.remote.EJBRemoteTransactionPropagatingInterceptor.processInvocation(EJBRemoteTransactionPropagatingInterceptor.java:80) [jboss-as-ejb3-7.1.1.Final.jar:
7.1.1.Final]
What am I missing ?

You haven't told Hibernate that the ID of UserApp was generated automatically by the database:
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name="user_id")
private int userId;
(and do the same for the other entity)

Since your are using bidirectional, change your client code as below.
Session session = (Session) em.getDelegate();
session.beginTransaction();
UserAppDevice ud = new UserAppDevice();
ud.setDeviceName(device);
UsersApp user = new UsersApp(os, token, userNumber, userPassword);
user.setUserAppDevices(new ArrayList<UserAppDevice>())
user.getUserAppDevices().add(ud);
session.save(user);
session.getTransaction().commit();

As mentioned by JB Nizet, you're missing the autogenerated strategy.
An alternative would be to use UUID as your id column and create the values yourself with
#Id
private UUID id = UUID.randomUUID();
Also, don't forget to set equals/hashCode to use the id field as discussed to death in The JPA hashCode() / equals() dilemma
Incidentally, why are you using Session (hibernate specific) instead of sticking to JPA's API?

Hibernate: Transfer seeming n:n mapping in Database to #OneToMany in Hibernate with additional condition

I have a Database with a Mapping between applications and application_descriptions. Every application could have more than one description (mapped by column product_id). Column product_id in table applications can have duplicate values, but combinations of column product_id and column wrapping_version are unique. So the descriptions should only map to the application with highest version.
I have worked out a #OneToMany mapping in table application to get all descriptions. In descriptions I only get the String of product_id. That’s not optimal, but it doesn’t work to map it like in alternative a).
So the solution I have made worked fine for reading data from database, but when I try to update an application to database I get (only sometimes) following error:
Hibernate:
/* update
com.twistbox.iwp.dao.Application */ update
applications
set
created=?,
design_id=?,
message=?,
product_id=?,
product_title=?,
retailer_id=?,
state=?,
tbyb_playduration=?,
tbyb_startups=?,
wrapping_security_layer=?,
wrapping_version=?
where
id=?
Hibernate:
/* delete one-to-many com.twistbox.iwp.dao.Application.applicationDescriptions */ update
application_descriptions
set
product_id=null
where
product_id=?
104330 [http-8080-1] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 1048, SQLState: 23000
104330 [http-8080-1] ERROR org.hibernate.util.JDBCExceptionReporter - Column 'product_id' cannot be null
I have tried
1. to set the mapped description set to null before updating
2. set to a new empty HashSet Object before updating
3. let the mapped object like I get it from database
On default hibernate shouldn’t cascade on update and I haven’t found a way to stop doing it (last try was #OneToMany(cascade = {})). I have also tried in both tables true and false values for:
1. attribute null-able
2. updateable
3. insertable
Some of them worked for the application I got the error, but then I get same error for other applications witch only works if I remove the attributes again. Any ideas what to do?
My code (only important getter and setter, all other removed for better overview):
#Entity
#Table (name = "applications")
#FilterDef(name = "versionFilter")
public class Application implements Comparable<Application>, Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private long id;
private Retailer retailerId;
private long designId;
private String productId;
private String productTitle;
private int tbybPlayDuration;
private int tbybStartups;
private int wrappingSecurityLayer;
private int wrappingVersion;
private ApplicationStatus status;
private String message;
private Timestamp created;
private Set<ApplicationDescription> applicationDescriptions = new HashSet<ApplicationDescription>();
private Set<PricingApplicationMapping> pricingApplication = new HashSet<PricingApplicationMapping>();
public Application() {
}
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#GenericGenerator(name="increment", strategy="increment")
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
#Column(name="product_id")
public String getProductId() {
return productId;
}
public void setProductId(String productId) {
this.productId = productId;
}
#OneToMany(cascade = {})
#JoinColumn(name="product_id", referencedColumnName="product_id")
#Filter(name = "versionFilter", condition = "wrapping_version =select max(A.wrapping_version) from application A where A.product_id= product_id")
public Set<ApplicationDescription> getApplicationDescriptions() {
return applicationDescriptions;
}
public void setApplicationDescriptions(
Set<ApplicationDescription> applicationDescriptions) {
this.applicationDescriptions = applicationDescriptions;
}
#Override
public int compareTo(Application o) {
return this.getProductTitle().compareToIgnoreCase(o.getProductTitle());
}
}
#Entity
#Table (name = "application_descriptions")
#FilterDef(name = "paMapping")
public class ApplicationDescription implements Comparable<ApplicationDescription>, Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private long id;
private String productId;
// private Application application;
// private String countryCode;
private Territory territory;
private String name;
private String description;
private String termsAndConditions;
public ApplicationDescription() {
}
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#GenericGenerator(name="increment", strategy="increment")
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
// #ManyToOne
// #JoinColumn(name="product_id")
// public Application getApplication() {
// return application;
// }
//
// public void setApplication(Application application) {
// this.application = application;
// }
#Column(name="product_id")
public String getProductId() {
return productId;
}
public void setProductId(String productId) {
this.productId = productId;
}
#Column(name="name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Column(name="description")
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
#Column(name="terms_and_conditions")
public String getTermsAndConditions() {
if (this.termsAndConditions != null && !this.termsAndConditions.equals("") && !this.termsAndConditions.toLowerCase().equals("null"))
return this.termsAndConditions;
return "default";
}
public void setTermsAndConditions(String termsAndConditions) {
this.termsAndConditions = termsAndConditions;
}
#JoinColumn(name="country_code")
#OneToOne
public Territory getTerritory() {
return territory;
}
public void setTerritory(Territory territory) {
this.territory = territory;
}
#Override
public int compareTo(ApplicationDescription o) {
return this.getTerritory().getCountryCode().compareToIgnoreCase(o.getTerritory().getCountryCode());
}
}
Alternative for product_id in application_descriptions a):
#ManyToOne
#JoinColumn(name="product_id")
public Application getApplication() {
return application;
}
Error Message:
Hibernate:
/* load one-to-many com.twistbox.iwp.dao.Application.applicationDescriptions */ select
applicatio0_.product_id as product5_0_2_,
applicatio0_.id as id2_,
applicatio0_.id as id4_1_,
applicatio0_.product_id as product5_4_1_,
applicatio0_.description as descript2_4_1_,
applicatio0_.name as name4_1_,
applicatio0_.terms_and_conditions as terms4_4_1_,
applicatio0_.country_code as country6_4_1_,
territory1_.country_code as country1_8_0_,
territory1_.currency as currency8_0_,
territory1_.name as name8_0_,
territory1_.terms_and_conditions as terms4_8_0_
from
application_descriptions applicatio0_
left outer join
territories territory1_
on applicatio0_.country_code=territory1_.country_code
where
applicatio0_.product_id=?
180684 [http-8080-1] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 0, SQLState: S1009
180684 [http-8080-1] ERROR org.hibernate.util.JDBCExceptionReporter - Invalid value for getLong() - 'para'
SQL generating tables:
CREATE TABLE IF NOT EXISTS `applications` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`retailer_id` int(10) unsigned NOT NULL,
`design_id` int(10) unsigned NOT NULL,
`product_id` varchar(150) NOT NULL,
`product_title` varchar(150) NOT NULL,
`tbyb_playduration` int(10) NOT NULL,
`tbyb_startups` int(10) NOT NULL,
`wrapping_security_layer` int(10) unsigned NOT NULL DEFAULT '1',
`wrapping_version` int(10) unsigned NOT NULL DEFAULT '1',
`state` enum('WAITING','RUNNING','DONE','FAILED') NOT NULL DEFAULT 'WAITING',
`message` varchar(250) DEFAULT NULL,
`created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`),
UNIQUE KEY `product_id_wrapping_version` (`product_id`,`wrapping_version`),
KEY `FK_applications_retailers` (`retailer_id`),
KEY `FK_applications_custom_designs` (`design_id`),
KEY `product_id` (`product_id`),
CONSTRAINT `FK_applications_custom_designs` FOREIGN KEY (`design_id`) REFERENCES `custom_designs` (`id`),
CONSTRAINT `FK_applications_retailers` FOREIGN KEY (`retailer_id`) REFERENCES `retailers` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE IF NOT EXISTS `application_descriptions` (
`id` int(10) NOT NULL AUTO_INCREMENT,
`product_id` varchar(150) NOT NULL,
`country_code` varchar(5) NOT NULL,
`name` varchar(150) NOT NULL,
`description` varchar(500) NOT NULL,
`terms_and_conditions` text,
PRIMARY KEY (`id`),
UNIQUE KEY `product_id_county_code` (`product_id`,`country_code`),
KEY `FK_application_descriptions_applications` (`product_id`),
KEY `FK_application_descriptions_territories` (`country_code`),
CONSTRAINT `FK_application_descriptions_territories` FOREIGN KEY (`country_code`) REFERENCES `territories` (`country_code`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Application update:
public static long updateApplication(Application application){
SessionFactory sf = HibernateUtil.getSessionFactory();
Session session = null;
try{
session = sf.openSession();
session.beginTransaction();
session.saveOrUpdate(application);
session.getTransaction().commit();
}
catch(HibernateException he){
logger.severe("Error updating application! " + he.getMessage() + " " + he.getStackTrace());
return -1;
}
catch(Exception e){
logger.severe("Error updating application! " + e.getMessage() + " " + e.getStackTrace());
return -1;
}
finally{
session.close();
}
return application.getId();
}

How to Represent Composite keys in Hibernate using Annotations?

So I reverse engineered some tables from my db and when I try to save my object to the db I get the following error:
Initial SessionFactory creation failed.org.hibernate.AnnotationException: A Foreign key refering com.mycode.Block from com.mycode.Account has the wrong number of column. should be 2
Exception in thread "main" java.lang.ExceptionInInitializerError
The Domain objects Are Block which contains a number of Account Objects:
#OneToMany(fetch = FetchType.LAZY, mappedBy = "Block")
public Set<EAccount> getAccounts() {
return this.Accounts;
}
Account has a Composite key of Id and Role. This has been setup in a seperate Class:
#Embeddable
public class BlockAccountId implements java.io.Serializable {
private long blockOid;
private String accountRole;
public BlockAccountId() {
}
public BlockAccountId(long blockOid, String accountRole) {
this.blockOid = blockOid;
this.accountRole = accountRole;
}
#Column(name = "BLOCK_OID", nullable = false)
public long getBlockOid() {
return this.blockOid;
}
public void setBlockOid(long blockOid) {
this.blockOid = blockOid;
}
#Column(name = "ACCOUNT_ROLE", nullable = false, length = 10)
public String getAccountRole() {
return this.accountRole;
}
public void setAccountRole(String accountRole) {
this.accountRole = accountRole;
}
So I want to know. How can I Link the tables Block and account on blockOid but still ensure the account table has both blockOid and accountRole as a composite key.
Any examples would be greatly appreciated!
N.B this is a Block (One) to Account (Many) relationship.
Thanks

The easiest is to place your association directly in the embedded id component.
Hibernate reference documentation
Section 5.1.2.1.1. id as a property using a component type ()
Example (Only write the important getter() and setter())
#Entity
public class Block {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name="BLOCK_OID")
long blockOid;
#OneToMany(fetch = FetchType.LAZY, mappedBy = "id.block", cascade=CascadeType.ALL)
Set<Account> accounts = new HashSet<Account>();
}
#Entity
public class Account {
#EmbeddedId BlockAccountId id;
public Account()
{
this.id = new BlockAccountId();
}
public void setBlock(Block pBlock) {
this.id.setBlock(pBlock);
}
public Block getBlock() {
return this.id.getBlock();
}
public String getAccountRole() {
return this.id.getAccountRole();
}
public void setAccountRole(String accountRole) {
this.id.setAccountRole(accountRole);
}
}
#Embeddable
public class BlockAccountId implements java.io.Serializable {
#ManyToOne(optional = false)
private Block block;
#Column(name = "ACCOUNT_ROLE", nullable = false, length = 10)
private String accountRole;
public BlockAccountId() {
}
//Implement equals and hashcode
}
The corresponding database table are :
CREATE TABLE block (
BLOCK_OID bigint(20) NOT NULL auto_increment,
PRIMARY KEY (`BLOCK_OID`)
)
CREATE TABLE account (
ACCOUNT_ROLE varchar(10) NOT NULL,
block_BLOCK_OID bigint(20) NOT NULL,
PRIMARY KEY (`ACCOUNT_ROLE`,`block_BLOCK_OID`),
KEY `FK_block_OID` (`block_BLOCK_OID`),
CONSTRAINT `FK_block_OID` FOREIGN KEY (`block_BLOCK_OID`) REFERENCES `block` (`BLOCK_OID`)
)

based on hibernate documentation here's the link
based on it you can do the following :
#Entity
public class Account {
#EmbeddedId BlockAccountId id;
#MapsId(value = "blockOid")
#ManyToOne
private Block block;
public Account()
{
this.id = new BlockAccountId();
}
public void setBlock(Block pBlock) {
this.block = pBlock;
}
public Block getBlock() {
return this.block;
}
public String getAccountRole() {
return this.id.getAccountRole();
}
public void setAccountRole(String accountRole) {
this.id.setAccountRole(accountRole);
}
}

Java Hibernate - Composite Primary Key Issue

I have following two tables
CREATE TABLE event_type_master (
Event_Type_Code varchar(128) NOT NULL,
PRIMARY KEY (Event_Type_Code)
)
CREATE TABLE event_master (
Event_Code varchar(128) NOT NULL,
Event_Type_Code varchar(128) NOT NULL,
PRIMARY KEY (Event_Code,Event_Type_Code),
CONSTRAINT FK1 FOREIGN KEY (Event_Type_Code) REFERENCES event_type_master (Event_Type_Code)
)
Now I have create model classes for the above relation as follow
EventMaster Class:-
#Entity
#Table(name="event_master")
public class EventMaster implements java.io.Serializable {
private EventMasterId id;
private EventTypeMaster eventTypeMaster;
private String eventName;
public EventMaster() {
}
public EventMaster(EventMasterId id, EventTypeMaster eventTypeMaster) {
this.id = id;
this.eventTypeMaster = eventTypeMaster;
}
public EventMaster(EventMasterId id, EventTypeMaster eventTypeMaster) {
this.id = id;
this.eventTypeMaster = eventTypeMaster;
this.eventName = eventName;
}
#EmbeddedId
#AttributeOverrides( {
#AttributeOverride(name="eventCode", column=#Column(name="Event_Code", nullable=false, length=128) ),
#AttributeOverride(name="eventTypeCode", column=#Column(name="Event_Type_Code", nullable=false, length=128) ) } )
public EventMasterId getId() {
return this.id;
}
public void setId(EventMasterId id) {
this.id = id;
}
#ManyToOne(fetch=FetchType.LAZY)
#JoinColumn(name="Event_Type_Code",referencedColumnName = "Event_Type_Code", nullable=false, insertable=false, updatable=false)
public EventTypeMaster getEventTypeMaster()
{
return this.eventTypeMaster;
}
public void setEventTypeMaster(EventTypeMaster eventTypeMaster) {
this.eventTypeMaster = eventTypeMaster;
}
}
EventMasterId Class for Compound Primary Key setting:-
#Embeddable
public class EventMasterId implements java.io.Serializable {
private String eventCode;
private String eventTypeCode;
public EventMasterId() {
}
public EventMasterId(String eventCode, String eventTypeCode)
{
this.eventCode = eventCode;
this.eventTypeCode = eventTypeCode;
}
#Column(name="Event_Code", nullable=false, length=128)
public String getEventCode() {
return this.eventCode;
}
public void setEventCode(String eventCode) {
this.eventCode = eventCode;
}
#Column(name="Event_Type_Code", nullable=false, length=128)
public String getEventTypeCode() {
return this.eventTypeCode;
}
public void setEventTypeCode(String eventTypeCode) {
this.eventTypeCode = eventTypeCode;
}
public boolean equals(Object other) {
........
}
public int hashCode() {
..........
}
}
EventTypeMaster Class
#Entity
#Table(name="event_type_master")
public class EventTypeMaster implements java.io.Serializable {
private String eventTypeCode;
private String eventTypeName;
private Set<EventMaster> eventMasters = new HashSet<EventMaster>(0);
public EventTypeMaster() {
}
public EventTypeMaster(String eventTypeCode) {
this.eventTypeCode = eventTypeCode;
}
public EventTypeMaster(String eventTypeCode, String eventTypeName, Set eventMasters) {
this.eventTypeCode = eventTypeCode;
this.eventTypeName = eventTypeName;
this.eventMasters = eventMasters;
}
#Id
#Column(name="Event_Type_Code", unique=true, nullable=false, length=128)
public String getEventTypeCode() {
return this.eventTypeCode;
}
public void setEventTypeCode(String eventTypeCode) {
this.eventTypeCode = eventTypeCode;
}
#OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="eventTypeMaster")
#JoinColumn(name="Event_Type_Code", referencedColumnName = "Event_Type_Code")
public Set<EventMaster> getEventMasters() {
return this.eventMasters;
}
public void setEventMasters(Set<EventMaster> eventMasters) {
this.eventMasters = eventMasters;
}
}
After setting All I created a HebernateUtil Class using Netbeans to connect to HibernateSession Factory and tried to Test adding a record to event_master table as follow
Session session = null;
session = NewHibernateUtil.getSessionFactory().getCurrentSession();
try {
org.hibernate.Transaction tx = session.beginTransaction();
EventMasterId key1=new EventMasterId();
EventTypeMaster eTypeMaster1=new EventTypeMaster();
eTypeMaster1=(EventTypeMaster)session.load(EventTypeMaster.class, "e1");
key1.setEventCode(eTypeMaster1.getEventTypeCode());
key1.setEventCode("Test_Event_Code");
EventMaster em=new EventMaster();
em.setId(key1);
em.setEventTypeMaster(eTypeMaster1);
em.setEventDesc("Event Description");
session.save(em);
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
}
But I am getting following Error
Hibernate: insert into event_master (Create_DTTM, Created_By, Event_Desc, Event_Name, Event_Short_Name, Last_Mod_By, Last_Mod_DTTM, Event_Code, Event_Type_Code) values (?, ?, ?, ?, ?, ?, ?, ?, ?)
1473 [main] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 1048, SQLState: 23000
1473 [main] ERROR org.hibernate.util.JDBCExceptionReporter - Column 'Event_Type_Code' cannot be null
1474 [main] ERROR org.hibernate.event.def.AbstractFlushingEventListener - Could not synchronize database state with session
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:94)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
at test.NewMain.main(NewMain.java:46)
Caused by: java.sql.BatchUpdateException: Column 'Event_Type_Code' cannot be null
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1666)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1082)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
Please help me to solve this.

I think you have a typo.
key1.setEventCode(eTypeMaster1.getEventTypeCode());
key1.setEventCode("Test_Event_Code");
Should the first line be key1.setEventTypeCode.