Cannot solve hibernate error QuerySyntaxException: designs is not mapped [from designs]

Cannot solve hibernate error QuerySyntaxException: designs is not mapped [from designs] - java

I'm using hibernate for my final project. I have a table called designs for store all the details of artworks. In the explore page i need to get all the designs from the database using hibernate. So i created a java class called designModal.java,
public class designModal {
SessionFactory sf;
public designModal() {
sf = connection.NewHibernateUtil.getSessionFactory();
}
public String[] getAllDesigns() {
String result[] = new String[8];
try {
Session ses = sf.openSession();
Transaction tr = ses.beginTransaction();
List<Designs> designList = ses.createQuery("from designs").list();
for (Designs designs : designList) {
result[0]= designs.getDesignId().toString();
result[1]= designs.getTitle();
result[2]= designs.getImage();
result[3]= designs.getDescription();
result[4]= designs.getPrice().toString();
result[5]= designs.getViews().toString();
result[6]= designs.getLikes().toString();
result[7]= designs.getDesigners().toString();
}
tr.commit();
ses.flush();
ses.close();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(result[0]+""+result[1]+""+result[3]);
return result;
}
}
Then i called this method in my page,
<%#page import="modal.designModal"%>
<%
String result[] = new designModal().getAllDesigns();
out.print(result.length);
%>
but i got an exception : QuerySyntaxException: designs is not mapped [from designs]
I followed some SO questions but that not helped. So I created a new web project,but still not solved. What is the wrong here ? Thank you
Design.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Oct 11, 2016 1:11:09 PM by Hibernate Tools 3.6.0 -->
<hibernate-mapping>
<class name="pojos.Designs" table="designs" catalog="design">
<id name="designId" type="java.lang.Integer">
<column name="design_id" />
<generator class="identity" />
</id>
<many-to-one name="designers" class="pojos.Designers" fetch="select">
<column name="designer_id" not-null="true" />
</many-to-one>
<many-to-one name="galleries" class="pojos.Galleries" fetch="select">
<column name="gallery_id" not-null="true" />
</many-to-one>
<property name="title" type="string">
<column name="title" length="45" />
</property>
<property name="image" type="string">
<column name="image" length="100" />
</property>
<property name="description" type="string">
<column name="description" length="500" />
</property>
<property name="price" type="java.lang.Double">
<column name="price" precision="22" scale="0" />
</property>
<property name="views" type="java.lang.Integer">
<column name="views" />
</property>
<property name="likes" type="java.lang.Integer">
<column name="likes" />
</property>
<set name="buysRegisters" table="buys_register" inverse="true" lazy="true" fetch="select">
<key>
<column name="design_id" not-null="true" />
</key>
<one-to-many class="pojos.BuysRegister" />
</set>
</class>
</hibernate-mapping>
Design.java
package pojos;
// Generated Oct 11, 2016 1:11:09 PM by Hibernate Tools 3.6.0
import java.util.HashSet;
import java.util.Set;
/**
* Designs generated by hbm2java
*/
public class Designs implements java.io.Serializable {
private Integer designId;
private Designers designers;
private Galleries galleries;
private String title;
private String image;
private String description;
private Double price;
private Integer views;
private Integer likes;
private Set buysRegisters = new HashSet(0);
public Designs() {
}
public Designs(Designers designers, Galleries galleries) {
this.designers = designers;
this.galleries = galleries;
}
public Designs(Designers designers, Galleries galleries, String title, String image, String description, Double price, Integer views, Integer likes, Set buysRegisters) {
this.designers = designers;
this.galleries = galleries;
this.title = title;
this.image = image;
this.description = description;
this.price = price;
this.views = views;
this.likes = likes;
this.buysRegisters = buysRegisters;
}
public Integer getDesignId() {
return this.designId;
}
public void setDesignId(Integer designId) {
this.designId = designId;
}
public Designers getDesigners() {
return this.designers;
}
public void setDesigners(Designers designers) {
this.designers = designers;
}
public Galleries getGalleries() {
return this.galleries;
}
public void setGalleries(Galleries galleries) {
this.galleries = galleries;
}
public String getTitle() {
return this.title;
}
public void setTitle(String title) {
this.title = title;
}
public String getImage() {
return this.image;
}
public void setImage(String image) {
this.image = image;
}
public String getDescription() {
return this.description;
}
public void setDescription(String description) {
this.description = description;
}
public Double getPrice() {
return this.price;
}
public void setPrice(Double price) {
this.price = price;
}
public Integer getViews() {
return this.views;
}
public void setViews(Integer views) {
this.views = views;
}
public Integer getLikes() {
return this.likes;
}
public void setLikes(Integer likes) {
this.likes = likes;
}
public Set getBuysRegisters() {
return this.buysRegisters;
}
public void setBuysRegisters(Set buysRegisters) {
this.buysRegisters = buysRegisters;
}
}
HibernateUtil.java
package connection;
public class NewHibernateUtil {
private static final SessionFactory sessionFactory;
static {
try {
// Create the SessionFactory from standard (hibernate.cfg.xml)
// config file.
sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
} catch (Throwable ex) {
// Log the exception.
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}

Change:
List<Designs> designList = ses.createQuery("from designs").list();
to:
List<Designs> designList = ses.createQuery("from Designs d").list();

Related

Hibernate: How to write Join queries including multi levels?

I am trying to write a HQL Query, which is similar to a MySQL Join. Below are my entities. As you can see below I am not using annotations in my Pojos. Instead I am using XML to do the mapping.
Stock
public class Stock implements java.io.Serializable {
private Integer idstock;
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
private Product product;
private int quantity;
private Date dateCreated;
private Date lastUpdated;
public Stock() {
}
public Stock(Product product, int quantity) {
this.product = product;
this.quantity = quantity;
}
public Stock(Product product, int quantity, Date dateCreated, Date lastUpdated) {
this.product = product;
this.quantity = quantity;
this.dateCreated = dateCreated;
this.lastUpdated = lastUpdated;
}
public Integer getIdstock() {
return this.idstock;
}
public void setIdstock(Integer idstock) {
this.idstock = idstock;
}
public Product getProduct() {
return this.product;
}
public void setProduct(Product product) {
this.product = product;
}
public int getQuantity() {
return this.quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public Date getDateCreated() {
return this.dateCreated;
}
public void setDateCreated(Date dateCreated) {
this.dateCreated = dateCreated;
}
public Date getLastUpdated() {
return this.lastUpdated;
}
public void setLastUpdated(Date lastUpdated) {
this.lastUpdated = lastUpdated;
}
}
Product
public class Product implements java.io.Serializable {
private Integer idproduct;
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
private SparePart sparePart;
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
private VehicleModel vehicleModel;
private double unitPrice;
private String qrcode;
private boolean enable;
private Integer minimumStockLevel;
private Integer stockReorderLevel;
public Product() {
}
public Product(SparePart sparePart, VehicleModel vehicleModel, double unitPrice, String qrcode, boolean enable) {
this.sparePart = sparePart;
this.vehicleModel = vehicleModel;
this.unitPrice = unitPrice;
this.qrcode = qrcode;
this.enable = enable;
}
public Product(SparePart sparePart, VehicleModel vehicleModel, double unitPrice, String qrcode, boolean enable, Integer minimumStockLevel, Integer stockReorderLevel) {
this.sparePart = sparePart;
this.vehicleModel = vehicleModel;
this.unitPrice = unitPrice;
this.qrcode = qrcode;
this.enable = enable;
this.minimumStockLevel = minimumStockLevel;
this.stockReorderLevel = stockReorderLevel;
}
public Integer getIdproduct() {
return this.idproduct;
}
public void setIdproduct(Integer idproduct) {
this.idproduct = idproduct;
}
public SparePart getSparePart() {
return this.sparePart;
}
public void setSparePart(SparePart sparePart) {
this.sparePart = sparePart;
}
public VehicleModel getVehicleModel() {
return this.vehicleModel;
}
public void setVehicleModel(VehicleModel vehicleModel) {
this.vehicleModel = vehicleModel;
}
public double getUnitPrice() {
return this.unitPrice;
}
public void setUnitPrice(double unitPrice) {
this.unitPrice = unitPrice;
}
public String getQrcode() {
return this.qrcode;
}
public void setQrcode(String qrcode) {
this.qrcode = qrcode;
}
public boolean getEnable() {
return this.enable;
}
public void setEnable(boolean enable) {
this.enable = enable;
}
public Integer getMinimumStockLevel() {
return this.minimumStockLevel;
}
public void setMinimumStockLevel(Integer minimumStockLevel) {
this.minimumStockLevel = minimumStockLevel;
}
public Integer getStockReorderLevel() {
return this.stockReorderLevel;
}
public void setStockReorderLevel(Integer stockReorderLevel) {
this.stockReorderLevel = stockReorderLevel;
}
}
VehicleModel
public class VehicleModel implements java.io.Serializable {
private Integer idvehicleModel;
private String modelName;
private String code;
private boolean enable;
public VehicleModel() {
}
public VehicleModel(String modelName, boolean enable) {
this.modelName = modelName;
this.enable = enable;
}
public Integer getIdvehicleModel() {
return this.idvehicleModel;
}
public void setIdvehicleModel(Integer idvehicleModel) {
this.idvehicleModel = idvehicleModel;
}
public String getModelName() {
return this.modelName;
}
public void setModelName(String modelName) {
this.modelName = modelName;
}
public boolean getEnable() {
return this.enable;
}
public void setEnable(boolean enable) {
this.enable = enable;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
}
SparePart
public class SparePart implements java.io.Serializable {
private Integer idsparePart;
private String sparePartName;
private String code;
private boolean enable;
public SparePart() {
}
public SparePart(String sparePartName, boolean enable) {
this.sparePartName = sparePartName;
this.enable = enable;
}
public Integer getIdsparePart() {
return this.idsparePart;
}
public void setIdsparePart(Integer idsparePart) {
this.idsparePart = idsparePart;
}
public String getSparePartName() {
return this.sparePartName;
}
public void setSparePartName(String sparePartName) {
this.sparePartName = sparePartName;
}
public boolean getEnable() {
return this.enable;
}
public void setEnable(boolean enable) {
this.enable = enable;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
}
Here are my XML mappings
Product.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 4, 2020 1:35:36 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.Product" table="product" catalog="aaa" optimistic-lock="version">
<id name="idproduct" type="java.lang.Integer">
<column name="idproduct" />
<generator class="identity" />
</id>
<many-to-one name="sparePart" class="beans.SparePart" fetch="select">
<column name="idspare_part" not-null="true" />
</many-to-one>
<many-to-one name="vehicleModel" class="beans.VehicleModel" fetch="select">
<column name="idvehicle_model" not-null="true" />
</many-to-one>
<property name="unitPrice" type="double">
<column name="unit_price" precision="22" scale="0" not-null="true">
<comment>This is the central price for a product. This can change according to the market values.</comment>
</column>
</property>
<property name="qrcode" type="string">
<column name="qrcode" length="45" not-null="true" />
</property>
<property name="enable" type="boolean">
<column name="enable" not-null="true" />
</property>
<property name="minimumStockLevel" type="java.lang.Integer">
<column name="minimum_stock_level" />
</property>
<property name="stockReorderLevel" type="java.lang.Integer">
<column name="stock_reorder_level" />
</property>
</class>
</hibernate-mapping>
Stock.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 4, 2020 1:35:36 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.Stock" table="stock" catalog="aaa" optimistic-lock="version">
<id name="idstock" type="java.lang.Integer">
<column name="idstock" />
<generator class="identity" />
</id>
<many-to-one name="product" class="beans.Product" fetch="select">
<column name="idproduct" not-null="true" />
</many-to-one>
<property name="quantity" type="int">
<column name="quantity" not-null="true" />
</property>
<property name="dateCreated" type="timestamp">
<column name="date_created" length="0" />
</property>
<property name="lastUpdated" type="timestamp">
<column name="last_updated" length="0" />
</property>
</class>
</hibernate-mapping>
SparePart.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 4, 2020 1:35:36 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.SparePart" table="spare_part" catalog="aaa" optimistic-lock="version">
<id name="idsparePart" type="java.lang.Integer">
<column name="idspare_part" />
<generator class="identity" />
</id>
<property name="sparePartName" type="string">
<column name="spare_part_name" length="100" not-null="true" />
</property>
<property name="code" type="string">
<column name="code" length="100"/>
</property>
<property name="enable" type="boolean">
<column name="enable" not-null="true" />
</property>
</class>
</hibernate-mapping>
VehicleModel.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 4, 2020 1:35:36 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.VehicleModel" table="vehicle_model" catalog="aaa" optimistic-lock="version">
<id name="idvehicleModel" type="java.lang.Integer">
<column name="idvehicle_model" />
<generator class="identity" />
</id>
<property name="modelName" type="string">
<column name="model_name" length="100" not-null="true" />
</property>
<property name="code" type="string">
<column name="code" length="100"/>
</property>
<property name="enable" type="boolean">
<column name="enable" not-null="true" />
</property>
</class>
</hibernate-mapping>
Right now I have the following query.
public List<Stock> getAllStock(Session session) {
Query query = session.createQuery("FROM Stock s");
List<Stock> list = (List<Stock>) query.list();
return list;
}
This gives me,
Stock
Product of each Stock
SparePart of each Product
VehicleModel of each Product
However this is extremely slow due to the famous n+1 issue. To get data from each table, this code generated a SQL query, resulting huge amount of sql queries. The more data you have, the more queries this generates . As a result, this is a super slow process. Currently it takes 40 seconds.
Instead I need to write HQL joins and get data with a single SQL query. How can I do this?

You should use JOIN FETCH to tell JPA/Hibernate that that it should load it.
From the Hibernate docs:
If you forget to JOIN FETCH all EAGER associations, Hibernate is going
to issue a secondary select for each and every one of those which, in
turn, can lead to N+1 query issues.
For this reason, you should prefer LAZY associations.
select s from Stock s join fetch s.product p
join fetch p.sparePart sp
join fetch p.vehicleModel v
Please also read the documentation: https://docs.jboss.org/hibernate/orm/5.5/userguide/html_single/Hibernate_User_Guide.html#best-practices-fetching-associations

You can use criteria implementation of hibernate and using alias you can join
Below is some reference code that may help
Criteria c = session.createCriteria(Stock.class, "stock");
c.createAlias("stock.product", "product");//it is like inner join
c.createAlias("product.spare_part","spare_part");
c.createAlias("product.vehicle_model","vehicle_model");
return c.list();

Hibernate Proxy Error - Gson

I am using hibernate in building a Restful Web Service (CRUD) in Java.
The problem is that when I return the data (GET) in some table that has some kind of relationship, I get the following error:
HTTP Status 500 - Internal Server Error
Type Exception Report
Message java.lang.UnsupportedOperationException: Attempted to serialize java.lang.Class: org.hibernate.proxy.HibernateProxy. Forgot to register a type adapter?
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
When removing the bidirectional mapping created by hibernate on either side (table) the server returns to normal operation.
I use the Gson library to return and receive my requests in the JSON form.
Would anyone know how to solve this?
Thank you all for your help.
Here is a part of my controller code:
#GET
#Path("getConvenio")
#Produces(javax.ws.rs.core.MediaType.APPLICATION_JSON)
public String getConvenioList() {
Gson gson = new Gson();
List<Tbconveniado> l = new ArrayList();
try {
l = new ArrayList(op.getConveniadoList());
} catch (Exception ex) {
ex.printStackTrace();
}
return gson.toJson(l);
}
Following is the implementation of the "getConveniadoList" method that is present in the ConvenioOperations class:
public class ConvenioOperations {
public void setConvenio(Tbconveniado tb) {
Session s = HibernateUtil.getSessionFactory().openSession();
Transaction tx = s.beginTransaction();
s.saveOrUpdate(tb);
tx.commit();
s.close();
}
public List<Tbconveniado> getConveniadoList(){
Session s = HibernateUtil.getSessionFactory().openSession();
Transaction tx = s.beginTransaction();
List<Tbconveniado> l = null;
Query q = s.createQuery("from Tbconveniado c");
l = q.list();
tx.commit();
s.close();
return l;
}
}
Finally, the mapping and the class generated by hibernate to the table "Tbconveniado"
<hibernate-mapping>
<class name="pojos.Tbconveniado" table="tbconveniado" catalog="sindicatodb" optimistic-lock="version" >
<id name="idConveniado" type="int">
<column name="idConveniado" />
<generator class="assigned" />
</id>
<!-- foreign key -->
<many-to-one name="tbramo" class="pojos.Tbramo" fetch="select">
<column name="ramo" not-null="true" />
</many-to-one>
<property name="nome" type="string">
<column name="nome" length="100" />
</property>
<property name="dataConvenio" type="date">
<column name="dataConvenio" length="10" />
</property>
<property name="dataLimite" type="date">
<column name="dataLimite" length="10" />
</property>
<property name="endereco" type="string">
<column name="endereco" length="100" />
</property>
<property name="bairro" type="string">
<column name="bairro" length="100" />
</property>
<property name="cep" type="string">
<column name="cep" length="20" />
</property>
<property name="telefone" type="string">
<column name="telefone" length="20" />
</property>
<property name="cnpj" type="string">
<column name="cnpj" length="15" />
</property>
<property name="cidade" type="string">
<column name="cidade" length="100" />
</property>
<property name="status" type="java.lang.Integer">
<column name="status" />
</property>
<property name="email" type="string">
<column name="email" length="100" />
</property>
</class>
</hibernate-mapping>
Java Class for XML above:
public class Tbconveniado implements java.io.Serializable {
private int idConveniado;
private Tbramo tbramo;
private String nome;
private Date dataConvenio;
private Date dataLimite;
private String endereco;
private String bairro;
private String cep;
private String telefone;
private String cnpj;
private String cidade;
private Integer status;
private String email;
public Tbconveniado() {
}
public Tbconveniado(int idConveniado, Tbramo tbramo) {
this.idConveniado = idConveniado;
this.tbramo = tbramo;
}
public Tbconveniado(int idConveniado, Tbramo tbramo, String nome, Date dataConvenio, Date dataLimite, String endereco, String bairro, String cep, String telefone, String cnpj, String cidade, Integer status, String email) {
this.idConveniado = idConveniado;
this.tbramo = tbramo;
this.nome = nome;
this.dataConvenio = dataConvenio;
this.dataLimite = dataLimite;
this.endereco = endereco;
this.bairro = bairro;
this.cep = cep;
this.telefone = telefone;
this.cnpj = cnpj;
this.cidade = cidade;
this.status = status;
this.email = email;
}
public int getIdConveniado() {
return this.idConveniado;
}
public void setIdConveniado(int idConveniado) {
this.idConveniado = idConveniado;
}
public Tbramo getTbramo() {
return this.tbramo;
}
public void setTbramo(Tbramo tbramo) {
this.tbramo = tbramo;
}
public String getNome() {
return this.nome;
}
public void setNome(String nome) {
this.nome = nome;
}
public Date getDataConvenio() {
return this.dataConvenio;
}
public void setDataConvenio(Date dataConvenio) {
this.dataConvenio = dataConvenio;
}
public Date getDataLimite() {
return this.dataLimite;
}
public void setDataLimite(Date dataLimite) {
this.dataLimite = dataLimite;
}
public String getEndereco() {
return this.endereco;
}
public void setEndereco(String endereco) {
this.endereco = endereco;
}
public String getBairro() {
return this.bairro;
}
public void setBairro(String bairro) {
this.bairro = bairro;
}
public String getCep() {
return this.cep;
}
public void setCep(String cep) {
this.cep = cep;
}
public String getTelefone() {
return this.telefone;
}
public void setTelefone(String telefone) {
this.telefone = telefone;
}
public String getCnpj() {
return this.cnpj;
}
public void setCnpj(String cnpj) {
this.cnpj = cnpj;
}
public String getCidade() {
return this.cidade;
}
public void setCidade(String cidade) {
this.cidade = cidade;
}
public Integer getStatus() {
return this.status;
}
public void setStatus(Integer status) {
this.status = status;
}
public String getEmail() {
return this.email;
}
public void setEmail(String email) {
this.email = email;
}
}

Hibernate: could not initialize proxy - no Session (through reference chain....)

Note: Before anyone complain about this is a duplicate, make sure to go through the content without judging by title. Also make sure to read your reference question and the answer carefully to see whether it is duplicate. As of my experience now, the issue in this question can happen under different environments. For an example, the answer for someone using the below code in jsp will be different, for someone using Spring will be different and for someone whose DB is small and eager load is fine will be different. And no, my situation is not any of them.
I am writing a REST api using Hibernateand Jersey. Please have a look at the below code.
VerificationCodeJSONService.java - The JSON Service class
#Path("/verificaion_code")
public class VerificationCodeJSONService {
#GET
#Path("/getAllVerificationCodes")
#Produces(MediaType.APPLICATION_JSON)
public List<VerificaionCode> getAllVerificationCodes() {
VerificationCodeService verificationCodeService=new VerificationCodeService();
List<VerificaionCode> list = verificationCodeService.getAllVerificationCodes();
return list;
}
}
VerificationCodeService.java - The Service Layer
public class VerificationCodeService {
private static VerificationCodeDAOInterface verificationCodeDAOInterface;
public VerificationCodeService() {
verificationCodeDAOInterface = new VerificationCodeDAOImpl();
}
public List<VerificaionCode> getAllVerificationCodes() {
Session session = verificationCodeDAOInterface.openCurrentSession();
Transaction transaction = null;
List<VerificaionCode> verificaionCodes = new ArrayList<VerificaionCode>();
try {
transaction = verificationCodeDAOInterface.openTransaction(session);
verificaionCodes = verificationCodeDAOInterface.getAllVerificationCodes(session);
transaction.commit();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
session.close();
}
return verificaionCodes;
}
}
VerificationCodeDAOImpl.java - The database layer
public class VerificationCodeDAOImpl implements VerificationCodeDAOInterface{
private static final SessionFactoryBuilder sessionFactoryBuilder = SessionFactoryBuilder.getInstance();
#Override
public List<VerificaionCode> getAllVerificationCodes(Session session) {
List<VerificaionCode> verificaionCodes=(List<VerificaionCode>)session.createQuery("from VerificaionCode").list();
return verificaionCodes;
}
}
VerificationCode.java - The DAO layer
public class VerificaionCode implements java.io.Serializable {
private Integer idverificaionCode;
private Patient patient;
private String code;
private Date dateCreated;
private Date lastUpdated;
public VerificaionCode() {
}
public VerificaionCode(Patient patient, String code, Date lastUpdated) {
this.patient = patient;
this.code = code;
this.lastUpdated = lastUpdated;
}
public VerificaionCode(Patient patient, String code, Date dateCreated, Date lastUpdated) {
this.patient = patient;
this.code = code;
this.dateCreated = dateCreated;
this.lastUpdated = lastUpdated;
}
public Integer getIdverificaionCode() {
return this.idverificaionCode;
}
public void setIdverificaionCode(Integer idverificaionCode) {
this.idverificaionCode = idverificaionCode;
}
public Patient getPatient() {
return this.patient;
}
public void setPatient(Patient patient) {
this.patient = patient;
}
public String getCode() {
return this.code;
}
public void setCode(String code) {
this.code = code;
}
public Date getDateCreated() {
return this.dateCreated;
}
public void setDateCreated(Date dateCreated) {
this.dateCreated = dateCreated;
}
public Date getLastUpdated() {
return this.lastUpdated;
}
public void setLastUpdated(Date lastUpdated) {
this.lastUpdated = lastUpdated;
}
}
Patient.java - The DAO layer
public class Patient implements java.io.Serializable {
private Integer idpatient;
private DiabetesType diabetesType;
private Language language;
private String customId;
private String diabetesOther;
private String firstName;
private String lastName;
private String email;
private Date dob;
private String parentEmail;
private String gender;
private Date diagnosedDate;
private Double height;
private Double weight;
private String heightUnit;
private String weightUnit;
private String theme;
private String userName;
private String password;
private Date dateCreated;
private Date lastUpdated;
public Patient() {
}
public Patient(DiabetesType diabetesType, Language language, String customId, String firstName, String email, Date dob, String gender, String theme, String userName, String password, Date lastUpdated) {
this.diabetesType = diabetesType;
this.language = language;
this.customId = customId;
this.firstName = firstName;
this.email = email;
this.dob = dob;
this.gender = gender;
this.theme = theme;
this.userName = userName;
this.password = password;
this.lastUpdated = lastUpdated;
}
public Integer getIdpatient() {
return this.idpatient;
}
public void setIdpatient(Integer idpatient) {
this.idpatient = idpatient;
}
public DiabetesType getDiabetesType() {
return this.diabetesType;
}
public void setDiabetesType(DiabetesType diabetesType) {
this.diabetesType = diabetesType;
}
public Language getLanguage() {
return this.language;
}
public void setLanguage(Language language) {
this.language = language;
}
public String getCustomId() {
return this.customId;
}
public void setCustomId(String customId) {
this.customId = customId;
}
public String getDiabetesOther() {
return this.diabetesOther;
}
public void setDiabetesOther(String diabetesOther) {
this.diabetesOther = diabetesOther;
}
public String getFirstName() {
return this.firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return this.lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return this.email;
}
public void setEmail(String email) {
this.email = email;
}
public Date getDob() {
return this.dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public String getParentEmail() {
return this.parentEmail;
}
public void setParentEmail(String parentEmail) {
this.parentEmail = parentEmail;
}
public String getGender() {
return this.gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getDiagnosedDate() {
return this.diagnosedDate;
}
public void setDiagnosedDate(Date diagnosedDate) {
this.diagnosedDate = diagnosedDate;
}
public Double getHeight() {
return this.height;
}
public void setHeight(Double height) {
this.height = height;
}
public Double getWeight() {
return this.weight;
}
public void setWeight(Double weight) {
this.weight = weight;
}
public String getHeightUnit() {
return this.heightUnit;
}
public void setHeightUnit(String heightUnit) {
this.heightUnit = heightUnit;
}
public String getWeightUnit() {
return this.weightUnit;
}
public void setWeightUnit(String weightUnit) {
this.weightUnit = weightUnit;
}
public String getTheme() {
return this.theme;
}
public void setTheme(String theme) {
this.theme = theme;
}
public String getUserName() {
return this.userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return this.password;
}
public void setPassword(String password) {
this.password = password;
}
public Date getDateCreated() {
return this.dateCreated;
}
public void setDateCreated(Date dateCreated) {
this.dateCreated = dateCreated;
}
public Date getLastUpdated() {
return this.lastUpdated;
}
public void setLastUpdated(Date lastUpdated) {
this.lastUpdated = lastUpdated;
}
}
Below are my Hibernate mapping files for the above POJOs
VerificaionCode.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 23, 2016 3:21:00 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.VerificaionCode" table="verificaion_code" catalog="myglukose" optimistic-lock="version">
<id name="idverificaionCode" type="java.lang.Integer">
<column name="idverificaion_code" />
<generator class="identity" />
</id>
<many-to-one name="patient" class="beans.Patient" fetch="select">
<column name="patient_idpatient" not-null="true" />
</many-to-one>
<property name="code" type="string">
<column name="code" length="45" not-null="true" />
</property>
<property name="dateCreated" type="timestamp">
<column name="date_created" length="19" />
</property>
<property name="lastUpdated" type="timestamp">
<column name="last_updated" length="19" not-null="true" />
</property>
</class>
</hibernate-mapping>
Patient.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Sep 23, 2016 3:21:00 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="beans.Patient" table="patient" catalog="myglukose" optimistic-lock="version">
<id name="idpatient" type="java.lang.Integer">
<column name="idpatient" />
<generator class="identity" />
</id>
<many-to-one name="diabetesType" class="beans.DiabetesType" fetch="select">
<column name="diabetes_type_iddiabetes_type" not-null="true" />
</many-to-one>
<many-to-one name="language" class="beans.Language" fetch="select">
<column name="language_idlanguage" not-null="true" />
</many-to-one>
<property name="customId" type="string">
<column name="custom_id" length="45" not-null="true" />
</property>
<property name="diabetesOther" type="string">
<column name="diabetes_other" length="45" />
</property>
<property name="firstName" type="string">
<column name="first_name" length="100" not-null="true" />
</property>
<property name="lastName" type="string">
<column name="last_name" length="100" />
</property>
<property name="email" type="string">
<column name="email" length="45" not-null="true" />
</property>
<property name="dob" type="date">
<column name="dob" length="10" not-null="true" />
</property>
<property name="parentEmail" type="string">
<column name="parent_email" length="45" />
</property>
<property name="gender" type="string">
<column name="gender" length="45" not-null="true" />
</property>
<property name="diagnosedDate" type="date">
<column name="diagnosed_date" length="10" />
</property>
<property name="height" type="java.lang.Double">
<column name="height" precision="22" scale="0" />
</property>
<property name="weight" type="java.lang.Double">
<column name="weight" precision="22" scale="0" />
</property>
<property name="heightUnit" type="string">
<column name="height_unit" length="45" />
</property>
<property name="weightUnit" type="string">
<column name="weight_unit" length="45" />
</property>
<property name="theme" type="string">
<column name="theme" length="45" not-null="true" />
</property>
<property name="userName" type="string">
<column name="user_name" length="45" not-null="true" />
</property>
<property name="password" type="string">
<column name="password" length="45" not-null="true" />
</property>
<property name="dateCreated" type="timestamp">
<column name="date_created" length="19" />
</property>
<property name="lastUpdated" type="timestamp">
<column name="last_updated" length="19" not-null="true">
<comment>Stores the basic information of the patient</comment>
</column>
</property>
</class>
</hibernate-mapping>
However when I run this code via http://localhost:8080/example_rest/rest/verificaion_code/getAllVerificationCodes I am getting the below error.
could not initialize proxy - no Session (through reference chain: java.util.ArrayList[0]->beans.VerificaionCode["patient"]->beans.Patient_$$_jvst40f_7["diabetesType"])
As you can see diabetesType is an Object (Foreign Key) in the patient's table and has nothing to do with VerificationCode. How can I fix this up?
Please note that this is a REST API. So I can't load these in a JSP like in a web app.
Update
As #Kayaman recommended, I made the updates by making null. Please check the below code. I noticed that verificaionCodes.get(i).getPatient().set...(null) makes the same error as above, so I tried below which started working fine.
VerificationCodeService.java
public List<VerificaionCode> getAllVerificationCodes() {
Session session = verificationCodeDAOInterface.openCurrentSession();
Transaction transaction = null;
List<VerificaionCode> verificaionCodes = new ArrayList<VerificaionCode>();
try {
transaction = verificationCodeDAOInterface.openTransaction(session);
verificaionCodes = verificationCodeDAOInterface.getAllVerificationCodes(session);
transaction.commit();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
session.close();
for(int i=0;i<verificaionCodes.size();i++)
{
Patient p = new Patient();
System.out.println(verificaionCodes.get(i).getPatient().getIdpatient());
Integer idpatient = verificaionCodes.get(i).getPatient().getIdpatient();
p.setIdpatient(idpatient);
verificaionCodes.get(i).setPatient(p);
}
}
return verificaionCodes;
}

Object is Returned null in Hibernate Select query

i Have this following query that i am using in hibernate
select a.*, b.cur_date, c.value as maxloginattempts
from tbl_user a, tbl_eod_bod_stat b, tbl_settings c
where upper(a.id) = 'ADMIN'
and usr_status in ('A','E','O','P','U','G','M','D','T') and c.attribute = 'MAX_LOGIN_ATTEMPTS'";
my main class:-
package foo;
import java.sql.Date;
import java.util.Arrays;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.criterion.Restrictions;
import com.imageinfo.eclear.hbm.pojo.TblUser;
public class myclass {
static SessionFactory factory;
public static void main(String[] args) {
myclass obj=new myclass();
System.out.println("above buildfactory");
try{
factory=new Configuration().configure().buildSessionFactory();
}catch(Exception e)
{
e.printStackTrace();
}
System.out.println("after buidl");
//obj.raiseEmailNotification();
//obj.doAfter();
//obj.validateInput();
obj.checkPass();
}
public void checkPass(){
String username="S5626";
Session session =factory.openSession();
Transaction tx=session.beginTransaction();
Query query=session.createQuery("select a.id,b.id,c.value as maxloginattempts from TblUser a,TblEodBodStat b,TblSettings c where upper(a.id.id)='ADMIN' and c.attribute='MAX_LOGIN_ATTEMPTS'");
//query.setParameter("username", username);
//List list=query.list();
System.out.println("worked");
int i=0;
List list=query.list();
if(!list.isEmpty())
{
for(Object a:list)
{
Object[] o=(Object[])a;
System.out.println(o[0]);
System.out.println(Arrays.toString(o));
}
}
when i run this the tblUser object is returned null.
OUTPUT
log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.
after buidl
worked
null
[null, com.imageinfo.eclear.hbm.pojo.TblEodBodStatId#257db8ef, 3]
tblUser.hbm.xml:-
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Dec 3, 2015 4:43:35 PM by Hibernate Tools 3.2.4.GA -->
<hibernate-mapping>
<class name="com.imageinfo.eclear.hbm.pojo.TblUser" table="TBL_USER">
<composite-id name="id" class="com.imageinfo.eclear.hbm.pojo.TblUserId">
<key-property name="id" type="string">
<column name="ID" length="22" />
</key-property>
<key-property name="roleId" type="string">
<column name="ROLE_ID" length="3" />
</key-property>
<key-property name="fname" type="string">
<column name="FNAME" length="60" />
</key-property>
<key-property name="emailId" type="string">
<column name="EMAIL_ID" length="100" />
</key-property>
<key-property name="branchCode" type="string">
<column name="BRANCH_CODE" length="5" />
</key-property>
<key-property name="employeeCode" type="string">
<column name="EMPLOYEE_CODE" length="20" />
</key-property>
<key-property name="departmentCode" type="string">
<column name="DEPARTMENT_CODE" length="10" />
</key-property>
<key-property name="userCategory" type="string">
<column name="USER_CATEGORY" length="1" />
</key-property>
<key-property name="description" type="string">
<column name="DESCRIPTION" length="100" />
</key-property>
<key-property name="loggedStatus" type="java.lang.Byte">
<column name="LOGGED_STATUS" precision="2" scale="0" />
</key-property>
<key-property name="lastLogged" type="timestamp">
<column name="LAST_LOGGED" />
</key-property>
<key-property name="currentSessionId" type="string">
<column name="CURRENT_SESSION_ID" length="34" />
</key-property>
<key-property name="currentAttempts" type="java.lang.Boolean">
<column name="CURRENT_ATTEMPTS" precision="1" scale="0" />
</key-property>
<key-property name="expiryDate" type="date">
<column name="EXPIRY_DATE" length="7" />
</key-property>
<key-property name="expireStatus" type="string">
<column name="EXPIRE_STATUS" length="3" />
</key-property>
<key-property name="allowedForms" type="string">
<column name="ALLOWED_FORMS" length="1000" />
</key-property>
<key-property name="groupId" type="string">
<column name="GROUP_ID" length="50" />
</key-property>
<key-property name="usrActiveStatus" type="string">
<column name="USR_ACTIVE_STATUS" length="1" />
</key-property>
<key-property name="usrStatus" type="string">
<column name="USR_STATUS" length="1" />
</key-property>
<key-property name="idmsStatus" type="string">
<column name="IDMS_STATUS" length="1" />
</key-property>
<key-property name="creator" type="string">
<column name="CREATOR" length="22" />
</key-property>
<key-property name="approver" type="string">
<column name="APPROVER" length="22" />
</key-property>
<key-property name="CSessionid" type="string">
<column name="C_SESSIONID" length="34" />
</key-property>
<key-property name="ASessionid" type="string">
<column name="A_SESSIONID" length="34" />
</key-property>
<key-property name="creatorDate" type="timestamp">
<column name="CREATOR_DATE" />
</key-property>
<key-property name="creatorIpAddress" type="string">
<column name="CREATOR_IP_ADDRESS" length="15" />
</key-property>
<key-property name="approverDate" type="timestamp">
<column name="APPROVER_DATE" />
</key-property>
<key-property name="approverIpAddress" type="string">
<column name="APPROVER_IP_ADDRESS" length="15" />
</key-property>
<key-property name="logoutDate" type="timestamp">
<column name="LOGOUT_DATE" />
</key-property>
<key-property name="lockedStatus" type="string">
<column name="LOCKED_STATUS" length="1" />
</key-property>
<key-property name="userIdentity" type="string">
<column name="USER_IDENTITY" length="20" />
</key-property>
<key-property name="passwd" type="string">
<column name="PASSWD" length="50" />
</key-property>
<key-property name="passHist1" type="string">
<column name="PASS_HIST1" length="50" />
</key-property>
<key-property name="passHist2" type="string">
<column name="PASS_HIST2" length="50" />
</key-property>
<key-property name="passHist3" type="string">
<column name="PASS_HIST3" length="50" />
</key-property>
<key-property name="passHist4" type="string">
<column name="PASS_HIST4" length="50" />
</key-property>
</composite-id>
</class>
</hibernate-mapping>
TblUserId.java
package com.imageinfo.eclear.hbm.pojo;
// Generated Dec 3, 2015 4:43:34 PM by Hibernate Tools 3.2.4.GA
import java.io.Serializable;
import java.sql.Timestamp;
import java.util.Date;
/**
* TblUserId generated by hbm2java
*/
public class TblUserId implements java.io.Serializable {
private String id;
private String roleId;
private String fname;
private String emailId;
private String branchCode;
private String employeeCode;
private String departmentCode;
private String userCategory;
private String description;
private Byte loggedStatus;
private Timestamp lastLogged;
private String currentSessionId;
private Boolean currentAttempts;
private Date expiryDate;
private String expireStatus;
private String allowedForms;
private String groupId;
private String usrActiveStatus;
private String usrStatus;
private String idmsStatus;
private String creator;
private String approver;
private String CSessionid;
private String ASessionid;
private Timestamp creatorDate;
private String creatorIpAddress;
private Timestamp approverDate;
private String approverIpAddress;
private Timestamp logoutDate;
private String lockedStatus;
private String userIdentity;
private String passwd;
private String passHist1;
private String passHist2;
private String passHist3;
private String passHist4;
public TblUserId() {
}
public TblUserId(String id, String roleId, String fname, String emailId,
String branchCode, String employeeCode, String departmentCode,
String userCategory, String description, Byte loggedStatus,
Timestamp lastLogged, String currentSessionId,
Boolean currentAttempts, Date expiryDate, String expireStatus,
String allowedForms, String groupId, String usrActiveStatus,
String usrStatus, String idmsStatus, String creator,
String approver, String CSessionid, String ASessionid,
Timestamp creatorDate, String creatorIpAddress,
Timestamp approverDate, String approverIpAddress,
Timestamp logoutDate, String lockedStatus, String userIdentity,
String passwd, String passHist1, String passHist2,
String passHist3, String passHist4) {
this.id = id;
this.roleId = roleId;
this.fname = fname;
this.emailId = emailId;
this.branchCode = branchCode;
this.employeeCode = employeeCode;
this.departmentCode = departmentCode;
this.userCategory = userCategory;
this.description = description;
this.loggedStatus = loggedStatus;
this.lastLogged = lastLogged;
this.currentSessionId = currentSessionId;
this.currentAttempts = currentAttempts;
this.expiryDate = expiryDate;
this.expireStatus = expireStatus;
this.allowedForms = allowedForms;
this.groupId = groupId;
this.usrActiveStatus = usrActiveStatus;
this.usrStatus = usrStatus;
this.idmsStatus = idmsStatus;
this.creator = creator;
this.approver = approver;
this.CSessionid = CSessionid;
this.ASessionid = ASessionid;
this.creatorDate = creatorDate;
this.creatorIpAddress = creatorIpAddress;
this.approverDate = approverDate;
this.approverIpAddress = approverIpAddress;
this.logoutDate = logoutDate;
this.lockedStatus = lockedStatus;
this.userIdentity = userIdentity;
this.passwd = passwd;
this.passHist1 = passHist1;
this.passHist2 = passHist2;
this.passHist3 = passHist3;
this.passHist4 = passHist4;
}
public String getId() {
return this.id;
}
public void setId(String id) {
this.id = id;
}
public String getRoleId() {
return this.roleId;
}
public void setRoleId(String roleId) {
this.roleId = roleId;
}
public String getFname() {
return this.fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getEmailId() {
return this.emailId;
}
public void setEmailId(String emailId) {
this.emailId = emailId;
}
public String getBranchCode() {
return this.branchCode;
}
public void setBranchCode(String branchCode) {
this.branchCode = branchCode;
}
public String getEmployeeCode() {
return this.employeeCode;
}
public void setEmployeeCode(String employeeCode) {
this.employeeCode = employeeCode;
}
public String getDepartmentCode() {
return this.departmentCode;
}
public void setDepartmentCode(String departmentCode) {
this.departmentCode = departmentCode;
}
public String getUserCategory() {
return this.userCategory;
}
public void setUserCategory(String userCategory) {
this.userCategory = userCategory;
}
public String getDescription() {
return this.description;
}
public void setDescription(String description) {
this.description = description;
}
public Byte getLoggedStatus() {
return this.loggedStatus;
}
public void setLoggedStatus(Byte loggedStatus) {
this.loggedStatus = loggedStatus;
}
public Timestamp getLastLogged() {
return this.lastLogged;
}
public void setLastLogged(Timestamp lastLogged) {
this.lastLogged = lastLogged;
}
public String getCurrentSessionId() {
return this.currentSessionId;
}
public void setCurrentSessionId(String currentSessionId) {
this.currentSessionId = currentSessionId;
}
public Boolean getCurrentAttempts() {
return this.currentAttempts;
}
public void setCurrentAttempts(Boolean currentAttempts) {
this.currentAttempts = currentAttempts;
}
public Date getExpiryDate() {
return this.expiryDate;
}
public void setExpiryDate(Date expiryDate) {
this.expiryDate = expiryDate;
}
public String getExpireStatus() {
return this.expireStatus;
}
public void setExpireStatus(String expireStatus) {
this.expireStatus = expireStatus;
}
public String getAllowedForms() {
return this.allowedForms;
}
public void setAllowedForms(String allowedForms) {
this.allowedForms = allowedForms;
}
public String getGroupId() {
return this.groupId;
}
public void setGroupId(String groupId) {
this.groupId = groupId;
}
public String getUsrActiveStatus() {
return this.usrActiveStatus;
}
public void setUsrActiveStatus(String usrActiveStatus) {
this.usrActiveStatus = usrActiveStatus;
}
public String getUsrStatus() {
return this.usrStatus;
}
public void setUsrStatus(String usrStatus) {
this.usrStatus = usrStatus;
}
public String getIdmsStatus() {
return this.idmsStatus;
}
public void setIdmsStatus(String idmsStatus) {
this.idmsStatus = idmsStatus;
}
public String getCreator() {
return this.creator;
}
public void setCreator(String creator) {
this.creator = creator;
}
public String getApprover() {
return this.approver;
}
public void setApprover(String approver) {
this.approver = approver;
}
public String getCSessionid() {
return this.CSessionid;
}
public void setCSessionid(String CSessionid) {
this.CSessionid = CSessionid;
}
public String getASessionid() {
return this.ASessionid;
}
public void setASessionid(String ASessionid) {
this.ASessionid = ASessionid;
}
public Timestamp getCreatorDate() {
return this.creatorDate;
}
public void setCreatorDate(Timestamp creatorDate) {
this.creatorDate = creatorDate;
}
public String getCreatorIpAddress() {
return this.creatorIpAddress;
}
public void setCreatorIpAddress(String creatorIpAddress) {
this.creatorIpAddress = creatorIpAddress;
}
public Timestamp getApproverDate() {
return this.approverDate;
}
public void setApproverDate(Timestamp approverDate) {
this.approverDate = approverDate;
}
public String getApproverIpAddress() {
return this.approverIpAddress;
}
public void setApproverIpAddress(String approverIpAddress) {
this.approverIpAddress = approverIpAddress;
}
public Timestamp getLogoutDate() {
return this.logoutDate;
}
public void setLogoutDate(Timestamp logoutDate) {
this.logoutDate = logoutDate;
}
public String getLockedStatus() {
return this.lockedStatus;
}
public void setLockedStatus(String lockedStatus) {
this.lockedStatus = lockedStatus;
}
public String getUserIdentity() {
return this.userIdentity;
}
public void setUserIdentity(String userIdentity) {
this.userIdentity = userIdentity;
}
public String getPasswd() {
return this.passwd;
}
public void setPasswd(String passwd) {
this.passwd = passwd;
}
public String getPassHist1() {
return this.passHist1;
}
public void setPassHist1(String passHist1) {
this.passHist1 = passHist1;
}
public String getPassHist2() {
return this.passHist2;
}
public void setPassHist2(String passHist2) {
this.passHist2 = passHist2;
}
public String getPassHist3() {
return this.passHist3;
}
public void setPassHist3(String passHist3) {
this.passHist3 = passHist3;
}
public String getPassHist4() {
return this.passHist4;
}
public void setPassHist4(String passHist4) {
this.passHist4 = passHist4;
}
));
result = 37 * result
+ (getPasswd() == null ? 0 : this.getPasswd().hashCode());
result = 37 * result
+ (getPassHist1() == null ? 0 : this.getPassHist1().hashCode());
result = 37 * result
+ (getPassHist2() == null ? 0 : this.getPassHist2().hashCode());
result = 37 * result
+ (getPassHist3() == null ? 0 : this.getPassHist3().hashCode());
result = 37 * result
+ (getPassHist4() == null ? 0 : this.getPassHist4().hashCode());
return result;
}
}
Please take note that i had several columns in tblUser of Timestamp data type.which were mapped in autogenerated hbm.xml and auto generated pojo as Serializable and because of that i was getting 'Could not deserialize Error'.later to fix that i replaced it manually with timestamp and in pojos with java.sql.Timestamp. I am using jdk 6.
i have two doubts:-
1.what could be the possible cause for this?
2.And why does it take a lot of time ,around almost 20 seconds,to create factory object.
thank you
P.S
I skipped posting TblUser.java which had just one property ,an object of TbluserId class.

Can you check the query present in the java code there is one field 'a.id.id' called. This must be the issue.

Hibernate and mysql error : Cannot add or update a child row

i have a hibernate error wich sais :
15:32:48,554 DEBUG SQL:111 - insert into apurement.user (groupe_id, username, password, email) values (?, ?, ?, ?)
15:32:48,664 WARN JDBCExceptionReporter:100 - SQL Error: 1452, SQLState: 23000
15:32:48,664 ERROR JDBCExceptionReporter:101 -
Cannot add or update a child row: a foreign key constraint fails (apurement.user,
CONSTRAINT groupe_id FOREIGN KEY (groupe_id) REFERENCES groupe (groupe_id)
ON DELETE NO ACTION ON UPDATE NO ACTION)
the code is Logic.java for the session management:
package com.beans;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.*;
public class Logic {
protected Configuration cfg;
protected SessionFactory sfg;
protected Session s;
protected Transaction tx;
public Logic() {
this.init();
}
public void init() {
this.setCfg(new Configuration().configure());
this.setSfg(this.getCfg().buildSessionFactory());
this.setS(this.getSfg().openSession());
this.setTx(this.getS().beginTransaction());
}
public Configuration getCfg() {
return cfg;
}
public void setCfg(Configuration cfg) {
this.cfg = cfg;
}
public SessionFactory getSfg() {
return sfg;
}
public void setSfg(SessionFactory sfg) {
this.sfg = sfg;
}
public Session getS() {
return s;
}
public void setS(Session s) {
this.s = s;
}
public Transaction getTx() {
return tx;
}
public void setTx(Transaction tx) {
this.tx = tx;
}
}
the User class :
package com.beans;
// Generated 3 janv. 2013 12:07:19 by Hibernate Tools 3.4.0.CR1
/**
* User generated by hbm2java
*/
public class User implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private Integer userId;
private Groupe groupe;
private String username;
private String password;
private String email;
public User() {
}
public User(Groupe groupe, String username, String password, String email) {
this.groupe = groupe;
this.username = username;
this.password = password;
this.email = email;
}
public Integer getUserId() {
return this.userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
public Groupe getGroupe() {
return this.groupe;
}
public void setGroupe(Groupe groupe) {
this.groupe = groupe;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return this.password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return this.email;
}
public void setEmail(String email) {
this.email = email;
}
}
the user.hbm :
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 3 janv. 2013 12:07:19 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="User" table="user" catalog="apurement">
<id name="userId" type="java.lang.Integer">
<column name="user_id" />
<generator class="identity" />
</id>
<many-to-one name="groupe" class="com.beans.Groupe" fetch="select">
<column name="groupe_id" not-null="true" />
</many-to-one>
<property name="username" type="string">
<column name="username" length="45" not-null="true" />
</property>
<property name="password" type="string">
<column name="password" length="45" not-null="true" />
</property>
<property name="email" type="string">
<column name="email" length="45" not-null="true" />
</property>
</class>
</hibernate-mapping>
groupe.java :
package com.beans;
// default package
// Generated 3 janv. 2013 12:07:19 by Hibernate Tools 3.4.0.CR1
import java.util.HashSet;
import java.util.Set;
/**
* Groupe generated by hbm2java
*/
public class Groupe implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private Integer groupeId;
private String groupeName;
private String groupeRole;
private Set users = new HashSet(0);
public Groupe() {
}
public Groupe(String groupeName, String groupeRole) {
this.groupeName = groupeName;
this.groupeRole = groupeRole;
}
public Groupe(String groupeName, String groupeRole, Set users) {
this.groupeName = groupeName;
this.groupeRole = groupeRole;
this.users = users;
}
public Integer getGroupeId() {
return this.groupeId;
}
public void setGroupeId(Integer groupeId) {
this.groupeId = groupeId;
}
public String getGroupeName() {
return this.groupeName;
}
public void setGroupeName(String groupeName) {
this.groupeName = groupeName;
}
public String getGroupeRole() {
return this.groupeRole;
}
public void setGroupeRole(String groupeRole) {
this.groupeRole = groupeRole;
}
public Set getUsers() {
return this.users;
}
public void setUsers(Set users) {
this.users = users;
}
}
Groupe.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 3 janv. 2013 12:07:19 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="Groupe" table="groupe" catalog="apurement">
<id name="groupeId" type="java.lang.Integer">
<column name="groupe_id" />
<generator class="identity" />
</id>
<property name="groupeName" type="string">
<column name="groupe_name" length="100" not-null="true" />
</property>
<property name="groupeRole" type="string">
<column name="groupe_role" length="45" not-null="true" />
</property>
<set name="users" table="user" inverse="true" lazy="true" fetch="select">
<key>
<column name="groupe_id" not-null="true" />
</key>
<one-to-many class="com.beans.User" />
</set>
</class>
</hibernate-mapping>
hibernate.cfg:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate- configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="sf">
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost/apurement</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<mapping class="com.beans.User" resource="com/beans/User.hbm.xml"/>
<mapping class="com.beans.Groupe" resource="com/beans/Groupe.hbm.xml"/>
</session-factory>
</hibernate-configuration>
i don't know what is going on.

You have a User that has a many-to-one mapping to a Groupe with not-null specified as true. You are trying to persist (insert) a User that does not have a Groupe.

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