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What are the types of inheritence models and describe how they work like vertical inheritence and horizontal
AjaySinghBhati
- Apr 30th, 2010
There are three types of inheritance mapping in hibernate1. Table per class hierarchy2. Table per subclass3. Table per concrete class In hbm.xml file you need following enteries1. For T...
Jaleel Akbar
- Jul 12th, 2007
Table per concrete class using implicitpolymorphism can also be added as inheritance mapping in hibernate
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What is component mapping in hibernate?
Thomas John
- Sep 21st, 2015
Hibernate component represents as a group of values or properties, not entity (table). I have a customer table that has address fields. I will create 2 models - customer, address. In this case, Addres...
mani.sivapuram
- Feb 21st, 2011
I will explain one realtime scenario here.Consider one Address class as given belowpublic class Address{private Integer doorNo;private String street;//provide setters and getters for above properties}...
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What is the difference between sorted and orderd collection in hibernate?
arindam_0006in
- May 19th, 2008
A component is an object saved as a value, not as a reference A component can be saved directly without needing to declare interfaces or identifier properties Required to define an empty constructor Shared references not supported
arindam_0006in
- May 19th, 2008
For Sorted Collection:A sorted collection is sorting a collection by utilizing the sorting features provided by the Java collections framework. The sorting occurs in the memory of JVM which running Hi...
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What is the main difference between Entity Beans and Hibernate ?
shashi1983
- Nov 22nd, 2008
The main diffrence between Entity Bean and hibernate is Entity Bean is a heavy weight component and hibernate is a light weight component.
nitinpokhriyal
- Jul 16th, 2008
It is not right answer as given by ranveer.Entity beans now become JPA so it has all the feature which hibernate has. All the application server has to provide implementation of jpa using presistent p...
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What is database persistence?How well it is implemented in Hibernate
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Editorial / Best Answer
mani.sivapuram- Member Since May-2010 | Feb 14th, 2011
There are mainly three states in hibernate
a) Transient state
b) Persistant state
c) Detatched stateTake the employee object place the data in that object like usename, password, empid. Now the state of the object is transient state, when we write the statement given below
session.save(employeeObject);
Now the state of the object is persistent since the employee object is kept in session object then when we write the statement given below
transaction.commit();
When we apply the above statement then the employee object is going to linked with database and the data is stored in related table of that database. Since the emp object in persistent state only the data is stored in database other wise the data is not stored in database.
After the commit operation it becomes into detached state. If anybody wants to store the emp object into database then in detached state it is not possible.
mani.sivapuram
- Feb 14th, 2011
There are mainly three states in hibernate a) Transient state b) Persistant state c) Detatched state Take the employee object place the data in that object like usename, password, empid. Now th...
prasadkuppa
- Apr 24th, 2008
Preserving the data inside a database is database persistence. Persistence is once of the fundamental concepts of application developement. There are many alternatives to implement persistence. Object...
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Q1: What is the difference between Hibernate and EJB 2.1? Q2: Which one, among EJB 2.1 and Hibernate, is better?Explain with reason.Q3: When to use EJB 2.1 and when to use Hibernate? Explain with scenarios.
srinivasaraobora
- Sep 20th, 2011
Advantages of Hibernate Over EJB Entity bean is also used for object oriented view. It needs lot of things to configure for make it possible and Lot of coding need for it. After all these performance ...
sony v george
- Apr 4th, 2007
Basically Ejb and Hibenate is enterly different one But having realtion with Entitybean in Ejb and Hibernate. Entity bean is also used for object orientd view . It need lot things to configures fo mak...
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Why Hibernate is advantageous over Entity Beans & JDBC?
kamalraja
- Aug 13th, 2009
Hibernate does not require a Application Server to be deployed. Easy plugin into any available project or module when compared to EJBHibenate involves less coding and easy to manage code when compared to JDBC.
Nirwana360
- Aug 9th, 2009
EJB3 and Hibernate both support JPA. Advantage of Hibernate over EJB3 Entity are as follows; EJB3 Entity needs a container to run where as Hibernator does not need one. Hibernate support Java ann...
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What J2EE design problems does Hibernate solves apart from Data Base in-dependency and being an ORM tool?
mani.sivapuram
- Feb 14th, 2011
Since in case of jdbc autocommit is always true but in case of hibernate after executing all the sql statements only it process the commit operation this is called as transaction management.But this t...
prashant82
- Jun 24th, 2009
In hibernate objects are loosely coupled providing flexibility during integration with other databases or applicationsIn J2EE inheritance can not be achieved directly for the objects mapping One-to-one mapping is mandatory in J2EE
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Stored procedure in hibernate
How to call stored procedure in mysql through hibernate?
krish_1911
- Nov 17th, 2008
In order to call a stored procedure using the hibernate , define a named query for a persistent class mapping document. Then call the named query from your java application .Example is given in the Hi...
subhani_syed
- Sep 16th, 2008
As per sql-->create a procedure in your sql by using the following code.create or replace procedure first-procedure(x in number,y out number)beginy:=x*x;end; write your sql connection code in ...
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POJOs
What are POJOs?How POJOs are created & used in Hibernate?
bhaskar daggupati
- Nov 7th, 2017
POJO class did happened in Hibernate...when we are doing reverse engineering to the project at that time it will be happened. POJO class will be used setters nd getters to insert or retrive the data.
Thomas John
- Sep 21st, 2015
A Java Bean is a Java class that has getters and setters in order to conform to Java-bean standards. Essentially you declare properties private and use getters and setters to read or modify the data. ...
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Store images using Hibernate
How do you store a image in oracle using hibernate ?
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What is Hibernate proxy?
arindam_0006in
- May 19th, 2008
Proxies are created dynamically by subclassing your object at runtime. The subclass has all the methods of the parent, and when any of the methods are accessed, the proxy loads up the real object from...
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Why Hibernate came in to picture
Anybody tell me please, where exactly Hibernate is used..tell me about the mapping and .xml file in Hibernate
madhusudan_ds
- Aug 25th, 2009
I think the answers above are a sufficient reason to understand, why hibernate? But don't get confused, when we are drawing comparisions between EJBs and Hibernate. They are not actually parallel ...
srinathvaralakshmi
- Jul 14th, 2009
The reasons are plenty,weighing in favor of Hibernate clearly. -Cost effective.Just imagine when you are using EJBs instead of Hibernate.One has to invest in Application Server(Websphere,Weblogic e...
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What is different between Hibernate and iBatis?
uday.dandu
- Jul 27th, 2010
In iBatis Java objects are mapped to the result sets. IBatis only maps the Java bean properties to database fields, and it fetches the database results in the form of Java beans based on configur...
dhandabani.j
- Jan 22nd, 2009
These are the few questions that continuously get asked in most of forums. Whats really difference between two and really more importantly when should I use one over the other. Its pretty intere...
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How JPA and hibernate are related as per EJB 3 specifications?
krishna_kanth83
- May 29th, 2008
first things first ..i have just seen ppl venting thier personal grudge over java / jpa or whatever over this forum.suns official sacceptence that jpa is a failure. please lets keep it out.as for the ...
Sri
- Oct 12th, 2007
JPA is official acceptance from SUN about its failure on EJB. It has to abandon its EJB model to go to ORM model. Finally, Sun should provide developers some tools to migrate Java programs to .net easily with out pain
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Hibernate Interview Questions
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