hibernate-mapping

I am creating a schema. My schema is as follows @Entity @Table(name = "PROMOTION") public class Promotion { @Id @Column (name = "promotion_id") private String promotionId; @JoinColumn(name = "seller_id") private List<Seller> sellerList; }; @Entity @Table(name = "SELLER") public class Seller { @Id @Column (name = "seller_id") private String sellerId; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "promotion_id") private Promotion promotion; @ManyToMany(fetch = FetchType.LAZY) @JoinColumn(name = "seller_id", referencedColumnName = "seller_id") private List<SellerPromotion> sellerList; };

I am using Hibernate 3 annotations. I have a table 'product' and child table 'product_spec' with one-to-many relation. When i do hibernateTemplate.save(product) it is giving error could not insert: [com.xx.ProductSpec]; SQL [insert into Products_spec Column 'PRODUCT_ID' cannot be null @Entity @Table(name = "product") public class Product implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue @Column(name = "PRODUCT_ID") private Integer productId; @Column(name = "PRODUCT_NAME") private String productName; @OneToMany(mappedBy = "product",fetch = FetchType

I want to do Audit for my entity updates. So I have implemented EmptyInterceptor . My onFlushDirty() method is not executing, but afterTransactionCompletion() does executes I'm using Spring 4.1 and Hibernate 5.0 + I have not done any configuration rather than @Component in configuration file till afterTransactionCompletion() get executed. What I'm missing here ? Also how to intercept Event query.executeUpdate() ? My Interceptor class is as follows: @Component public class AuditLogInterceptor extends EmptyInterceptor { private static final long serialVersionUID = 1L; @Override public boolean

Following is an example of load:- Stock stock = (Stock)session.load(Stock.class, new Integer(2)); StockTransaction stockTransactions = new StockTransaction(); //set stockTransactions detail stockTransactions.setStock(stock); session.save(stockTransactions); What is the difference if i directely set the id in like:- Stock stock =new Stock(); stock.setId(2); StockTransaction stockTransactions = new StockTransaction(); //set stockTransactions detail stockTransactions.setStock(stock); session.save(stockTransactions); As i already know the Id of the stock table. Y call the load or get? What is the

I am using the latest Hibernate 4.2.7.SP1 along with the entity-manager, and validator, etc. I am using he Microsoft SQL Server 2012. The code I am trying to use is: StringBuffer sb = new StringBuffer(); sb.append("SELECT vr.account_name as account FROM MY_VIEW_RECEIVABLES vr;"); String sql = sb.toString(); System.out.println("MyInvoiceDAO: getInvoices: SQL=" + sql); SQLQuery q = this.sessionFactory.getCurrentSession().createSQLQuery(sql); q.addScalar("account"); q.setResultTransformer(Transformers.aliasToBean(InvoiceDTO.class)); List results = q.list(); FYI: MY_VIEW_RECEIVABLES is a view, and