You need to loop all the ‘stock Daily Records’ and delete it one by one. In this example, if a ‘Stock’ is deleted, all its referenced ‘stock Daily Records’ should be deleted from database as well. ) The code session.save(stock Daily Records); is no longer required, when you save the ‘Stock’, it will “cascade” the save operation to it’s referenced ‘stock Daily Records’ and save both into database automatically.
* @author */ public class Contact DAOImpl implements Contact DAO package net.codejava.spring.config; import Bean Instantiation Excepti To get the project to properly build you need to make those three changes:1- In Mvc change to: @Component Scan(base Packages="net.codejava.spring.*")2- In Mvc add the user name and password to the DB3- In POM.
Row Mapper; /** * An implementation of the Contact DAO interface. Contact DAOImpl; import org.springframework.context.annotation. Bean; import org.springframework.context.annotation. Component Scan; import org.springframework.context.annotation. Mvc Configuration: Bean instantiation via factory method failed; nested exception is org.springframework.beans.
If set the dynamic-insert to true, which means exclude null property values in the Hibernate’s SQL INSERT statement.
For example, try set some null values to an object properties and save it again.
5) For complex data, mapping from Object-to-tables and vise versa reduces performance and increases time of conversion.
6) Hibernate does not allow some type of queries which are supported by JDBC. You can configure the dynamic-insert properties value through annotation or XML mapping file.This little “dynamic-insert” tweak may increase your system performance, and highly recommends to do it. NET has support of LINQ, which is a Framework that encompass language-integrated query.Stock Transaction stock Tran = new Stock Transaction(); //stock Price Open(new Float("1.2")); //stock Price Close(new Float("1.1")); //stock Price Change(new Float("10.0")); stock Volume(2000000L); stock Date(new Date()); stock Stock(stock); session.save(stock Tran); Hibernate will generate the unnecessary columns (PRICE_CHANGE, PRICE_CLOSE, PRICE_OPEN) for the insertion.However, one question in my mind is why Hibernate set it to false by default?