Problem #1:
I have three tables; User, UserRole, and UserRoleRelationships (join table). The UserRole table contain all the user roles which I want to associate with the user. When I insert a new user I want to add a new user and add a new association in the join table. Now, when I'm running the query for inserting a new user:
IWUser iwUser = new IWUser();
iwUser.setUsername("username");
iwUser.setFullName("fullName");
iwUser.setEmail("email");
iwUser.setPassword("password");
iwUser.setPrivatephone("55555");
iwUser.setWorkphone("777");
Set<IWUserRole> roleList = new HashSet<IWUserRole>();
IWUserRole iwUserRole = new IWUserRole();
iwUserRole.setRole("ROLE_USER");
roleList.add(iwUserRole);
iwUser.setUserRole(roleList);
iwUserManagementService.saveOrUpdate(iwUser);
hibernate is running the following queries:
Hibernate: insert into dbo.Users (Username, Password, Email, Workphone, Privatephone, FullName) values (?, ?, ?, ?, ?, ?)
Hibernate: insert into dbo.UserRoles (Role) values (?)
Hibernate: insert into UserRoleRelationships (UserId, RoleId) values (?, ?)
My hibernate mapping looks like:
IWUser.hbm.xml:
<hibernate-mapping>
<class name="domain.IWUser" schema="dbo" table="Users">
<id name="userId" type="int">
<column name="UserId"/>
<generator class="native"/>
</id>
<property name="username" type="string">
<column name="Username" not-null="true"/>
</property>
<property name="password" type="string">
<column name="Password" not-null="true"/>
</property>
<property name="email" type="string">
<column name="Email" not-null="false"/>
</property>
<property name="workphone" type="string">
<column name="Workphone" not-null="false"/>
</property>
<property name="privatephone" type="string">
<column name="Privatephone" not-null="false"/>
</property>
<property name="fullName" type="string">
<column name="FullName" not-null="false"/>
</property>
<set cascade="all" inverse="false" name="userRole" table="UserRoleRelationships" lazy="true" >
<key>
<column name="UserId"/>
</key>
<many-to-many class="domain.IWUserRole" column="RoleId"/>
</set>
</class>
</hibernate-mapping>
IWUserRole.hbm.xml:
<hibernate-mapping>
<class name="domain.IWUserRole" schema="dbo" table="UserRoles">
<id name="roleId" type="int">
<column name="RoleId"/>
<generator class="native"/>
</id>
<property name="role" type="string">
<column name="Role" not-null="true"/>
</property>
<set cascade="all" inverse="false" name="user" table="UserRoleRelationships" lazy="true">
<key>
<column name="RoleId"/>
</key>
<many-to-many class="domain.IWUser" column="UserId"/>
</set>
</class>
</hibernate-mapping>
How can I get hibernate to save the new user with an existing user role in the join table?
Problem #2:
When I update the user, hibernate delete the relations in the join table. How can I avoid this?
How can I get hibernate to save the new user with an existing user role in the join table?
Retrieve the user role entity and put that into the list instead of always creating a new one.
I mean this part:
IWUserRole iwUserRole = new IWUserRole();
iwUserRole.setRole("ROLE_USER");
Instead, you'd issue a query like select r from IWUserRole where r.role = 'ROLE_USER'
Related
I'm trying to join two tables and fetch all rows from an sql database using a hibernate query. I have two mapping files Offer.hmb.xml and Product.hbm.xml. In my Products class I have this function:
public List<Product> getProducts() {
factory = (new Configuration()).configure().buildSessionFactory();
Session session = factory.getCurrentSession();
session.beginTransaction();
List<Product> products = new ArrayList<Product>();
Product q = new Product();
Query query = session.createQuery("select p from Product p JOIN p.offers o where p.offerID = o.offerID or p.offerID = null");
List<Product> list = query.list();
Iterator<Product> iter = list.iterator();
while (iter.hasNext()) {
Product product = iter.next();
System.out.println(product);
}
Product mapping:
<hibernate-mapping>
<class name="shoppingbasket.Product" table="products">
<id name="productID" type="integer" access="field">
<column name="ProductID" />
<generator class="assigned" />
</id>
<property name="offerID" type="java.lang.Integer" access="field">
<column name="OfferID" />
</property>
<property name="productName" type="java.lang.String" access="field">
<column name="ProductName" length="40" not-null="true"/>
</property>
<property name="unitPrice" type="java.math.BigDecimal" access="field">
<column name="UnitPrice"/>
</property>
<one-to-one name="offers" class="shoppingbasket.Offer" />
</class>
</hibernate-mapping>
Offer mapping:
<hibernate-mapping>
<class name="shoppingbasket.Offer" table="offers">
<id name="offerID" type="integer" access="field">
<column name="OfferID" />
<generator class="assigned" />
</id>
<property name="offerDescription" type="java.lang.String" access="field">
<column name="OfferDescription" length="60" not-null="true"/>
</property>
<property name="shortDescription" type="java.lang.String" access="field">
<column name="ShortDescription" length="10" not-null="false"/>
</property>
<property name="TFTPOTGroup" type="java.lang.Integer" access="field">
<column name="TFTPOTGroup" length="4" not-null="false" default="null"/>
</property>
<property name="discountPercentage" type="java.lang.Double" access="field">
<column name="DiscountPercentage" not-null="false" default="null"/>
</property>
</class>
</hibernate-mapping>
The query runs but only returns the first two rows however if I convert the query to SQL and run it in phpmyadmin it returns all rows. What am I doing wrong? I'm new to Java and HQL any pointers/help would be appreciated
I'm trying to insert a new register but when Hibernate creates the insert it doesn't put the FK value.
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="ar.com.grupo1.entity.Turno" table="Turno">
<id name="numeroTurno" type="int">
<column name="Id_Turno" />
<generator class="identity" />
</id>
<property name="nombrePaciente" type="string">
<column name="Nombre" length="60" not-null="true" />
</property>
<property name="apellidoPaciente" type="string">
<column name="Apellido" length="60" not-null="true" />
</property>
<property name="planMedico" type="string">
<column name="PlanMedico" length="30" not-null="true" />
</property>
<property name="fechaLlegada" type="string">
<column name="FechaHoraLlegada" length="60" />
</property>
<property name="fechaAtencion" type="string">
<column name="FechaHoraAtencion" length="60" />
</property>
<property name="importe" type="float">
<column name="Importe" />
</property>
<property name="observaciones" type="string">
<column name="Observaciones" length="250" />
</property>
<one-to-one name="prestador" class="ar.com.grupo1.entity.Prestador"></one-to-one>
<one-to-one name="practica" class="ar.com.grupo1.entity.Practica"></one-to-one>
<one-to-one name="socio" class="ar.com.grupo1.entity.Socio" constrained="true"></one-to-one>
</class>
</hibernate-mapping>
On the insert is there isn't the Id_Socio value.
INFO [STDOUT] Hibernate: insert into Turno (Nombre,
Apellido, PlanMedico, FechaHoraLlegada, FechaHoraAtencion, Importe,
Observaciones) values (?, ?, ?, ?, ?, ?, ?)
WARN [JDBCExceptionReporter] SQL Error: 515, SQLState: 23000
ERROR [JDBCExceptionReporter] Værdien NULL kan ikke indsættes i
kolonnen 'Id_Socio', tabellen 'grupo1.dbo.Turno'. Kolonnen tillader
ikke null-værdier. INSERT kan ikke udføres.
UPDATE
I've already checked that the Socio's, Practica's, and Prestador's ID exists in the database.
I'm giving to Turnos all these classes as attributes, it gets them correctly but at the time it does the Insert operation, is not inserting the FK values.
I have two tables: patient_data and patient_diagnosis
Patient_data contains personal data of patient like: pid (pkey), gender, birth_date
patient_diagnosis contains the diagnosis data of the registered patients. It has fields like: record_id (pkey), pid (fkey to patient_data(pid)), diagnosis_date and other related fields.
Now, I want to join these two tables on pid and have all these fields in a single type of object.
Here is the mapping file:
<hibernate-mapping>
<class catalog="emr" name="in.Models.Emr" table="patient_diagnosis">
<id name="recordid" type="long">
<column name="record_id"/>
</id>
<property name="diagnosisDate" type="timestamp">
<column length="19" name="diagnosis_date" not-null="true"/>
</property>
<property name="snomedTermPrimary" type="long">
<column name="snomed_term_primary" not-null="true" />
</property>
<property name="snomedTermSecondary" type="string">
<column name="snomed_term_secondary" />
</property>
<property name="episodeNo" type="long">
<column name="episode_no" not-null="true" />
</property>
<property name="pid" type="long">
<column name="pid" not-null="true" />
</property>
<join table="patient_data">
<key column="pid"/>
<property name="gender" type="string">
<column name="gender" not-null="true"/>
</property>
<property name="birthDate" type="timestamp">
<column length="19" name="birth_date" not-null="true"/>
</property>
</join>
</class>
</hibernate-mapping>
But, the join applies on patient_diagnosis.record_id = patient_data.pid instead of patient_diagnosis.pid = patient_data.pid i.e. HQL applies on primary key of first table with mentioned column from second table.
Please provide the solution so that join can be applied on mentioned column from first with mentioned column from second table. Or is there another way out?
Please note that in case I didn't create classes for patient_data or patient_diagnosis. But, just Emr class having combination of fields of these tables is created.
Try giving foreign key
<id name="pid" type="java.lang.Long">
<column name="pid" />
<generator class="foreign">
<param name="property">patient_data</param>
</generator>
</id>
I am not sure but maybe this should work.
And
<one-to-one name="patient_data" class="in.Models.Emr"
cascade="save-update"></one-to-one>
Similarly in Join class
<one-to-one name="patient_diagnosis" class="in.Models.Emr"
cascade="save-update"></one-to-one>
I hope this helps you.
Let's say I have this named HQL (findRoomQuery):
select r from House h inner join h.roomList r
where h.address = :address and r.roomNo = :roomNo
The mapping of House entity is like this:
<class name="com.example.House" table="house">
<id name="id" column="id" type="long">
<generator class="assigned" />
</id>
<property name="address" column="address" type="string" length="100" not-null="false"/>
<set name="roomList" cascade="none" lazy="false" fetch="join" inverse="true">
<key>
<column name="house_id"/>
</key>
<one-to-many class="com.example.Room"/>
</set>
</class>
While the Room entity is like this:
<class name="com.example.Room" table="room">
<id name="id" column="id" type="long">
<generator class="assigned" />
</id>
<property name="houseId" column="house_id" type="long" not-null="true"/>
<property name="roomNo" column="room_no" type="string" length="4" not-null="false"/>
</class>
The relationship is a House can has one or many Room.
The code to execute the query is like this:
Query query = getSession().createQuery("findRoomQuery")
.setParameter("address", address)
.setParameter("roomNo", roomNo);
return query.list();
You can see the HQL return Room entities from select r (r is alias of h.roomList).
How to do the same thing with Hibernate Criteria Query?
Is it possible?
Try this one
Criteria criteria = session.createCriteria(House.class, "house");
criteria.createAlias("house.roomList", "roomList");
criteria.add(Restrictions.eq("house.address",address));
criteria.add(Restrictions.eq("roomList.roomNo", roomNo));
criteria.setProjection(Projections.property("roomList"));
Room r = (Room) criteria.uniqueResult();
replace
<property name="houseId" column="house_id" type="long" not-null="true"/>
to
<many-to-one name="houseId" class="com.example.House" fetch="select">
<column name="house_id" not-null="true" />
</many-to-one>
I am using hibernate 4.1.9. I have Users, and the Users have a list of Accounts, and Accounts have list of Transactions. Here is my hbm.xml
<?xml version="1.0"?>
<class name="User" table="users">
<id name="userId" column="userid">
<generator class="increment"/>
</id>
<property name="username" column="username" not-null="true"/>
<property name="password" column="password" not-null="true"/>
<property name="registerDate" type="timestamp" column="register_date"/>
<list name="accounts" table="accounts" inverse="true" cascade="all">
<key column="userid" not-null="true"/>
<index column="accountid"/>
<one-to-many class="com.joe.data.Account"/>
</list>
</class>
<class name="Account" table="accounts">
<id name="accountId" column="accountid">
<generator class="increment"/>
</id>
<property name="balance" type="big_decimal" column="balance"/>
<property name="lastModified" type="timestamp" column="last_modified"/>
<list name="txns" table="transactions" inverse="true" cascade="all">
<key column="accountId" not-null="true"/>
<index column="transactionId"/>
<one-to-many class="com.joe.data.Transaction"/>
</list>
<many-to-one name="userId" class="User" column="userid" not-null="true"
unique="true" cascade="all"/>
<many-to-one name="accountType" class="AccountType" column="account_type"
not-null="true" cascade="all" unique="true" />
</class>
<class name="Transaction" table="transactions">
<id name="transactionId" column="transactionid">
<generator class="increment"/>
</id>
<property name="description" column="description"/>
<property name="amount" type="big_decimal" column="amount"/>
<property name="dateAdded" column="date_added"/>
<property name="reoccuring" type="numeric_boolean" column="reoccuring"/>
<many-to-one name="category" class="Category" column="category"
not-null="true" cascade="all" unique="true" />
</class>
<class name="Category" table="categories">
<id name="categoryId" column="categoryid"/>
<property name="categoryName" column="categoryname" not-null="true"/>
</class>
<class name="AccountType" table="account_types">
<id name="accountType" column="account_type"/>
<property name="accountName" column="name"/>
</class>
If I leave inverse="true" on the list of accounts (in the User) I get the ConstraintViolationException because the userid is not getting put in the insert query. If I take inverse="true" off of the list of accounts, I get org.hibernate.MappingException: Repeated column in mapping for entity: com.joe.data.Account column: accountid (should be mapped with insert="false" update="false")
To clarify lowercase names are database columns names, camel case are class variable names. I know Transaction class isn't working quite right yet, but if I could get the Accounts to insert I could do the same thing to get the Transactions to insert.
Edit: I added the many-to-one on the Account class and now I am getting another exception where hibernate is complaining about missing a getter for userId in com.joe.data.Account
In order to get inverse="true" work, you need to define many-to-one for User in Account and for Account in Transaction class and mappings.