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Interview Questions and Answers for 'Kumaran Systems' - 3 question(s) found - Order By Newest

Frequently asked question in companies using Hibernate.
  Q1. What is Lazy Initialization in Hibernate ?Hibernate
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Ans. It's a feature to lazily initialize dependencies , relationship and associations from the Database. Any related references marked as @OneToMany or @ManyToMany are loaded lazily i.e when they are accessed and not when the parent is loaded.

  Sample Code for Lazy Initialization

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   Like         Discuss         Correct / Improve     hibernate   lazy loading hibernate   lazy initialization hibernate   architecture     Asked in 77 Companies      Basic        frequent

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Related Questions

  What are the ways to avoid LazyInitializationException ?
  After which Hibernate version , related Entities are initialized lazily ?
 What are the points to be considered if we move from Eager initialization to Lazy Initialization in Hibernate ?
 How does Lazy Initialization helps improving performance of an application ?
 What does the following exception means

org.hibernate.LazyInitializationException: could not initialize proxy - no Session
 If you are given choice to avoid LazyInitializationException using any of the following measures, which are the ones you will choose and why ?

1. Set lazy=false in the hibernate config file.
2. Set @Basic(fetch=FetchType.EAGER) at the mapping.
3. Make sure that we are accessing the dependent objects before closing the session.
4. Force initialization using Hibernate.initialize


  Q2. What is lazy fetching in Hibernate ?Hibernate
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Ans. Lazy fetching is the technique of not loading the child objects when parent objects are loaded. By default Hibernate does not load child objects. One can specify whether to load them or not while doing the association.

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   Like         Discuss         Correct / Improve     hibernate   lazy fetching   architecture     Asked in 11 Companies        frequent

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Related Questions



 Q3. Difference between Singleton and Factory Design Pattern ?Design2017-02-02 11:24:01

Ans. Both are creational design patterns but singleton facilitates in creation and reuse of single object whereas Factory deals with creation of multiple objects.

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   Like         Discuss         Correct / Improve     Design pattern  singleton  factory  singleton vs factory     Asked in 4 Companies


Related Questions

  Difference between Factory and Abstract Factory Design Pattern ?
  Please specify in what sequence the objects of following classes will be created ?

Session , SessionFactory, Query , Configuration
  Difference between Factory and Builder Design Pattern ?
  Difference between Factory and Strategy Design Pattern ?
  What is ThreadFactory ?
  How many SessionFactory and Session objects are created ?
  Which class provides the enumerated value for Bean Scope ?
 What are the advantages and disadvantages of Factory Design Pattern ?
 What is a factory design pattern ?




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