Well i have this problem
These are my tables
this is my code for "Compra"
#Entity
#Table(name = "compra")
public class Compra implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "codigo", unique = true, nullable = false)
private int codigo;
#ManyToOne
#JoinColumn(name = "codProveedor", nullable = false)
private Proveedor proveedor;
#Column(name = "tipoComprobante", nullable = false)
private String tipoComprobante;
#Temporal(TemporalType.DATE)
#Column(name = "fechaFactura", nullable = false)
private Date fechaFactura;
#Temporal(TemporalType.DATE)
#Column(name = "fechaLlegada", nullable = false)
private Date fechaLlegada;
#Column(name = "serie", nullable = false)
private String serie;
#Column(name = "numero", nullable = false)
private int numero;
#Column(name = "importe", nullable = false)
private double importe;
#Column(name = "vigencia", nullable = false)
private boolean vigencia = true;
#ElementCollection
private List<DetalleCompra> lstDetalle = new ArrayList<DetalleCompra>();
// getters and setters ...
And this is my code for "DetalleCompra"
#Entity
#Table(name = "detalleCompra")
public class DetalleCompra implements Serializable {
#Id
#GeneratedValue(generator = "gen")
#GenericGenerator(name = "gen", strategy = "foreign", parameters = #Parameter(name = "property", value = "compra"))
#Column(name = "codCompra", nullable = false)
private int codCompra;
#ManyToOne
#JoinColumn(name = "codPresentacion", nullable = false)
private Presentacion presentacion;
#Column(name = "imei", nullable = false)
private String imei;
#Column(name = "simcard", nullable = false)
private String simcard;
getters and setters ...
Well everything looks fine, but when i want to save i have this problem
org.hibernate.TransientObjectException: object references an unsaved transient instance – save the transient instance before flushing: DetalleCompra
well it is clear because when i want to save Compra and DetalleCompra, the second table expect the fk value
public void registrar(Compra compra) {
try {
session = HibernateUtil.getSessionFactory().openSession();
trans = session.beginTransaction();
session.save(compra);
trans.commit();
} catch (Exception e) {
trans.rollback();
throw e;
} finally {
session.close();
}
}
Well the pk of table "compra" is generated well but for the other table does not recognized this value autogenerated, why?, how can i solve that?
#ElementCollection
Defines a collection of instances of a basic type or embeddable class.
Must be specified if the collection is to be mapped by means of a
collection table.
You use wrong annotation to represent relation. There is one to many relation between Compra and DetalleCompra.
You should change #ElementCollection annotation to #OneToMany. Do not forget to specify join columns #JoinColumn(name="codCompra"). I assume that Presentacion is properly mapped.
See also
Unidirectional Mapping vs. Bidirectional Mapping
mappedBy attribute
#OneToMany annotation
#ElementCollection annotation
Related
I have an entity like Process, which will be created by , updated by one user. When I try to apply the filter. I have created the foreign key relationship in the database. Now, when I use the JPA Specification to apply dynamic filter, I am getting exception as
No property CREATED found for type Process!
#Table(name = "process")
#Entity
public class Process {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "PROCESS_ID")
#JsonProperty("id")
private Long id = null;
#NotNull
#Column(name = "NAME")
#JsonProperty("name")
private String name = null;
#Column(name = "CREATED_BY", updatable = false)
#JsonProperty("createdBy")
private Long createdBy = null;
#Column(name = "updatedBy", nullable = true)
#JsonProperty("updatedBy")
private Long updatedBy = null;
}
Hence, I Added the entity relationship mapping in the process entity as given below,
Now, I am getting below error. I am new to JPA and hibernate, the relation mapping is very confusing, kindly help.
#Table(name = "process")
#Entity
public class Process {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "PROCESS_ID")
#JsonProperty("id")
private Long id = null;
#NotNull
#Column(name = "NAME")
#JsonProperty("name")
private String name = null;
#Column(name = "CREATED_BY", updatable = false)
#JsonProperty("createdBy")
private Long createdBy = null;
#Column(name = "updatedBy", nullable = true)
#JsonProperty("updatedBy")
private Long updatedBy = null;
//newly added below properties so that there will be no error when fetching data
#OneToOne(targetEntity = UserDetails.class, fetch = FetchType.LAZY, mappedBy = "id")
private UserDetails CREATED;
#OneToOne(targetEntity = UserDetails.class, fetch = FetchType.LAZY, mappedBy = "id")
private UserDetails UPDATED;
}
Now, I am getting the below error
Referenced property not a (One|Many)ToOne: com.app.users.details.domain.UserDetails.id in mappedBy of com.app.scenarios.domain.Process.CREATED
Kindly let me know what i am doing wrong. I have a process which can be created by a user and can be updated by a user. In DB, I am having a foreign key relationship for process and userdetails entity.
EDIT
Code to get the filtered data from DB using JPA Specification
Page<process> result = this.processDao.findAll(getprocessGridData(processSearchCondition.getprocessName()), pageRequest);
private static Specification<process> getprocessGridData(String processName) {
return (Specification<process>) (root, query, criteriaBuilder) -> (
criteriaBuilder.like(root.get("name"), processName)
);
}
I guess what you actually want is this:
#Table(name = "process")
#Entity
public class Process {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "PROCESS_ID")
#JsonProperty("id")
private Long id;
#NotNull
#Column(name = "NAME")
#JsonProperty("name")
private String name;
#OneToOne(fetch = FetchType.LAZY)
#jOINColumn(name = "CREATED_BY", updatable = false)
private UserDetails createdBy;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "UPDATED_BY", nullable = true)
private UserDetails updatedBy;
}
The "TypeMismatchException: Provided id of the wrong type" error thrown when tried to merge detached entity. It works if the object wasn't detached. It also works if ids aren't #EmbeddedId.
A sample repo can be found here https://github.com/joes-code/hibernate-map
// Asset.java
#Entity
#Table(name = "asset")
public class Asset {
#EmbeddedId
private AssetId id;
#Column(name = "asset_cost"
private BigDecimal price;
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "asset_id", referencedColumnName = "asset_id", nullable = false, insertable = false, updatable = false, foreignKey = #ForeignKey(ConstraintMode.NO_CONSTRAINT))
private AssetDetail assetDetail;
}
// AssetId.java
#Embeddable
public class AssetId {
#Column(name = "asset_id", nullable = false)
private Integer assetId;
}
// AssetDetail.java
#Entity
#Table(name = "asset_detail")
public class AssetDetail {
#EmbeddedId
private AssetDetailId id;
#Column(name = "description", length = 35)
private String description;
}
// AssetDetailId.java
#Embeddable
public class AssetDetailId {
#Column(name = "asset_id", nullable = false)
private Integer assetId;
}
I'm using Hibernate 5.4.3.Final
Any ideas what I did wrong? It seems that Hibernate is assuming Asset and AssetDetail share the same Id class?
We have a Java ee application running on JBoss 6.4 GA using JPA and Hibernate with the following entities:
#Entity
#SequenceGenerator(name = "sequence", sequenceName="SEQ_CAMPAIGNS_ID",allocationSize = 1)
#Table(name = "CAMPAIGN")
public class CampaignEntity implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequence")
#Column(name = "ID")
private Long id;
#Column(name = "NAME")
private String name;
#Column(name = "IS_ACTIVE", nullable = false)
private boolean active;
#Column(name = "START_DATE", nullable = false)
private Date startDate;
#Column(name = "END_DATE", nullable = false)
private Date endDate;
#Column(name = "LEGAL_ENTITY_ID", nullable = false)
private Integer legalEntityId;
#Column(name = "DEPARTMENT", nullable = false)
#Enumerated(value = EnumType.STRING)
private Department department;
#Column(name = "CATEGORY", nullable = false)
#Enumerated(value = EnumType.STRING)
private Category category;
#Embedded
CampaignConditionsEntity campaignConditions;
#OneToMany(cascade = CascadeType.ALL, mappedBy = "campaign", orphanRemoval = true)
#OrderBy
private List<CodeEntity> campaignCodes;
public CampaignEntity() {
}
And the following CampaignConditionsEntity:
#Embeddable
public class CampaignConditionsEntity implements Serializable {
private static final String CAMPAIGN_ID = "CAMPAIGN_ID";
#ElementCollection(fetch = FetchType.EAGER)
#CollectionTable(name = "CAMPAIGN_COND_TRIP_TYPE", joinColumns = #JoinColumn(name = CAMPAIGN_ID))
private Set<TripTypeConditionEntity> tripTypeConditions;
And the following CodeEntity:
#Entity
#Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
#SequenceGenerator(name = "sequence", sequenceName = "SEQ_CODES_ID", allocationSize = 1)
public abstract class CodeEntity implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequence")
#Column(name = "ID", nullable = false)
private Long id;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "CAMPAIGN_ID")
private CampaignEntity campaign;
#OneToOne(mappedBy = "code", cascade = CascadeType.ALL, fetch = FetchType.LAZY, optional = false, orphanRemoval = true)
private DiscountEntity discount;
#Column(name = "MAX_USAGES", nullable = false)
private Integer maxUsages;
#Column(name = "UNLIMITED_USAGES", nullable = false)
private boolean unlimitedUsages;
#Column(name = "NEGATIVE_SH", nullable = false)
private boolean negativeSH;
#Column(name = "UNIQUE_BUYER", nullable = false)
private boolean uniqueBuyer;
#Column(name = "START_DATE")
private Date startDate;
#Column(name = "END_DATE")
private Date endDate;
#Embedded
private CodeConditionsEntity codeConditions;
public CodeEntity() {
}
This is the CodeConditionsEntity:
#Embeddable
public class CodeConditionsEntity implements Serializable {
private static final String CODE_ID = "CODE_ID";
#ElementCollection(fetch = FetchType.EAGER)
#CollectionTable(name = "CODE_COND_TRIP_TYPE", joinColumns = #JoinColumn(name = CODE_ID))
private Set<TripTypeConditionEntity> tripTypeConditions;
#ElementCollection(fetch = FetchType.EAGER)
#CollectionTable(name = "CODE_COND_CARRIERS", joinColumns = #JoinColumn(name = CODE_ID))
private Set<CarrierConditionEntity> carrierConditions;
This is the CarrierConditionEntity:
#Embeddable
public class CarrierConditionEntity implements Serializable {
#Column(name = "CARRIER", nullable = false, length = 3)
private String carrierCode;
#Column(name = "IS_INCLUDED", nullable = false)
private boolean included;
The problem is that in the logs we are finding unexpected deletes when the only operation that we are doing are finds of particular campaign entities.
In the production logs we find the following deletes
Hibernate: delete from CODE_COND_CARRIERS where CODE_ID=? and CARRIER=? and IS_INCLUDED=?
do you have any suggestion?
thanks
I have some suggestions :)
Be aware of what is a Persistence Context (EntityManager instance in JPA terminology / Session in Hibernate one), the entity lifecycle and transaction scope (unit of work)
Do not mutate entity state if you don't expect the changes to be reflected in database, or at least detach the entity before mutating it.
Mark your transaction as "readOnly" if you only fetch data in the related unit of work. (beware that if you have many "Transactional" methods joining the same physical transaction, the flag is set by the surrounding one and cannot be overridden by inner logical transactions). That way the EntityManager won't be flushed at the end of the transaction and pending changes won't be persisted to the database.
You can track the method triggering the unexpected deletion using an EntityListener on the related entity and printing the current strackTrace (new Throwable().printStackTrace()/ log(new Throwable()) in the PreRemove method
I found where was the problem:
The problem was that the Entities didn't have the equals() and the hashcode() implemented. Also there were entities that have a #PostLoad that modified the entity after loading it from database. Then in this situation Hibernate though that there was a change in those entities that didn't have the equals and the hashcode, and then it delete all of them and inserted again in the database (to have the same entities before the query)
Adding the equals and hashcode methods and deleting postload removed the unexpected deletes and inserts from the logs.
regards
i'm needing your help.
i have 3 tables on my database running on postgresql. they are exactly the same structure. so i thought if i could mapp them in one entity.
i try this:
#Entity
#Table(name = "stock_tierra")
#SecondaryTables({
#SecondaryTable(name = "stock_bebelandia"),
#SecondaryTable(name = "stock_libertador")
})
public class Stock implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id_stock", unique = true, nullable = false)
private int idStock;
#Column(name = "cantidad", nullable = false)
private int cantidad;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "id_producto", nullable = false)
private Producto idProducto;
#Column(name = "estado", nullable = false)
private boolean estado;
#Column(name = "usuario_creacion", nullable = false)
private int usuarioCreacion;
#Column(name = "usuario_modificacion")
private Integer usuarioModificacion;
#Temporal(TemporalType.DATE)
#Column(name = "fecha_creacion", nullable = false, length = 13)
private Date fechaCreacion;
#Temporal(TemporalType.DATE)
#Column(name = "fecha_modificacion", length = 13)
private Date fechaModificacion;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "id_sucursal", nullable = false)
private Sucursal idSucursal;
but when i try to look in to one table i only get data from the first stock_tierra
String stockSucursal = null;
switch (sucursal) {
case 1:
stockSucursal = "stock_tierra";
break;
case 2:
stockSucursal = "stock_bebelandia";
break;
case 3:
stockSucursal = "stock_libertador";
break;
}
Criteria criteria = getSession().createCriteria(Stock.class, stockSucursal);
criteria.add(Restrictions.eq("estado", true));
criteria.addOrder(Order.asc("idStock"));
List<Stock> list = criteria.list();
return list;
some idea what i'm doing wrong?
#SecondaryTables is used to denote one entity being spread over multiple tables in terms of columns, not as a union.
The only thing I can think of right now is using a view which does a union over all the tables, but I am not sure whether postgres can handle writable views, or how you declare them (if you even need a write interface.)
I have two tables in the clients mssql database. The first is a job table - so I created an Job entity which contains the load type and load weight and all that stuff - works fine.
My problem now is that there is a second table that includes informations about the load and unload point. The second table, I call it JEP, has a primary key consisting of several items: the type (load or unload), the zip code and the customer number.
I created an entity JobEndPoint and NetBeans also created an object representing the primary key JobEndPointPK containing all that fields.
I want to add two JobEndPoint (loadPoint and unloadPoint) to my Job entity. My problem is now: how do I annotate that in Hibernate? In my opinion it is an #OneToOne relation ship. It would be perfect if I could specify a SELECT statement like SELECT * FROM JEP WHERE type="load" AND customer_nr="123" AND zip_code="123 ...". Is that possible with Hibernate?
Thanks for your help!
Regeards,
Marco
Here are the Entities:
#Entity
#Table(name = "Auftragsdaten", catalog = "...", schema = "dbo")
public class Job implements Comparable<Object>, Serializable {
private static final long serialVersionUID = 4285871251915951149L;
#Id
#Basic(optional = false)
#Column(name = "`id`", nullable = false)
int id;
#Column(name = "`AufNr`", nullable=false)
int jobId;
#Transient
List<Integer> jobsAdded;
#Column(name = "`Beladedatum`", nullable=false)
#Temporal(TemporalType.DATE)
Date loadDate;
#Column(name = "`Beladezeit`")
#Temporal(TemporalType.TIME)
Date loadTimeFrom;
#Transient
Date loadTimeTo;
#Column(name = "`Entladedatum`", nullable=false)
#Temporal(TemporalType.DATE)
Date unloadDate;
#Column(name = "`Entladezeit Beginn`")
#Temporal(TemporalType.TIME)
Date unloadTimeFrom;
#Column(name = "`Entladezeit Ende`")
#Temporal(TemporalType.TIME)
Date unloadTimeTo;
#Transient
List<JobEndPoint> froms;
#OneToOne
#JoinColumns ({
#JoinColumn(name="`Beladetyp`", referencedColumnName = "`Ladetyp`", insertable = false, updatable = false),
#JoinColumn(name="`AbsNr`", referencedColumnName = "`KundenNr`", insertable = false, updatable = false),
#JoinColumn(name="`Verkehrsart`", referencedColumnName = "`VerkArt`", insertable = false, updatable = false),
#JoinColumn(name="`von LKZ`", referencedColumnName = "`LKZ`", insertable = false, updatable = false),
#JoinColumn(name="`von PLZ`", referencedColumnName = "`PLZ`", insertable = false, updatable = false)
})
JobEndPoint fromPoint;
#Transient
JobEndPoint toPoint;
#Column(name = "`Verkehrsart`", length = 10, nullable=false)
#Enumerated
JobType type;
#Column(name = "`Anzahl Paletten CCG1`")
int numberCCG1;
#Column(name = "`Anzahl Paletten CCG2`")
int numberCCG2;
#Transient
int numberFullContainer;
#Transient
int numberEmptyContainer;
#Column(name = "`Anzahl Container`")
int numberContainer;
#Column(name = "`Anz Stellplätze`")
int numberUnits;
#Column(name = "`Bruttogewicht`", nullable=false)
int loadWeight;
#ManyToOne
#JoinColumn(name="`Kühlkennzeichen`")
CoolingCode coolingCode;
}
#Entity
#Table(name = "BES", catalog = "...", schema = "dbo")
public class JobEndPoint implements Serializable {
private static final long serialVersionUID = 1017986852824783744L;
#Id
protected JobEndPointPK jobEndPointPK;
(...)
}
#Embeddable
public class JobEndPointPK implements Serializable {
#Basic(optional = false)
#Column(name = "`Ladetyp`", nullable = false, length = 50)
#Enumerated
EndPointType type;
#Basic(optional = false)
#Column(name = "`KundenNr`", nullable = false)
int customerId;
#Basic(optional = false)
#Column(name = "`VerkArt`", nullable = false, length = 10)
#Enumerated
JobType jobType;
#Basic(optional = false)
#Column(name = "`LKZ`", nullable = false, length = 3)
String countryCode;
#Basic(optional = false)
#Column(name = "`PLZ`", nullable = false, length = 7)
String zipCode;
}
In general, I would recommend using a generated internal primary key instead of the composite key. However, if you need to stick with your composite key, here are some ideas that hopefully help.
I understand that JobEndPointPK is implemented as an identifier component (see the Hibernate Reference, chapter 8.4). Note: it is critical that it implements the equals and hashCode` methods correctly, as Hibernate relies on these.
Updated: Provided that your JobEndPoint and JobEndPointPK looks something like this:
#Embeddable
class JobEndPointPK {
#Column(name = "type", nullable = false)
#Enumerated
EndPointType type;
#Column(name = "zipCode", nullable = false)
String zipCode;
#Column(name = "customerNumber", nullable = false)
int customerId;
// equals, hasCode, getters, setters etc.
}
#Entity
class JobEndPoint {
#Id
private JobEndPointPK key;
// getters, setters etc.
}
The mapping annotation would be something like:
#Entity
class Job {
#OneToOne
#JoinColumns ({
#JoinColumn(name="loadPointType", referencedColumnName = "type"),
#JoinColumn(name="loadPointZip", referencedColumnName = "zipCode"),
#JoinColumn(name="loadPointCust", referencedColumnName = "customerNumber")
})
private JobEndPoint loadPoint;
// similarly for unloadPoint
// other properties
}
The example is adapted from here.
I am not sure how to deal with JobEndPointPK.type though, as for loadPoint it is obviously Load and for unloadPoint, Unload, so you most probably don't want to store it separately in the DB. My gues is that you can specify the value with the #Formula annotation, but I haven't seen any concrete example for this.
Note that all this code is purely experimental, I haven't tested it.
There are other variations on the theme. For more details, see the section "Composite keys with annotations" in Chapter 8 of Java Persistence with Hibernate.