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Lazy loading in Hibernate is a design pattern used to defer the initialization of an object until the point at which it is needed. This is particularly useful in the context of object-relational mapping (ORM) where you m...
Yes, it is possible to perform collection mapping with One-to-One and Many-to-One relationships in Hibernate. However, the way you handle these relationships differs based on the type of association.
In Hibernate, there are several types of association mappings that you can use to define relationships between entities. The main types of association mappings are: One-to-One (1:1): This mapping defines a one-to...
Automatic dirty checking in Hibernate is a feature that allows the framework to automatically detect changes made to persistent objects (entities) and synchronize those changes with the database during a transaction. Thi...
In Hibernate, creating an immutable class involves ensuring that the class cannot be modified after it has been created. This is typically done by making the class final, providing no setters, and ensuring that all field...
In Hibernate, inheritance mapping strategies are used to map an object-oriented class hierarchy to a relational database schema. Hibernate provides several strategies to handle inheritance, allowing developers to choose ...
In Hibernate, an object can exist in one of several states during its lifecycle. These states are crucial for understanding how Hibernate manages the persistence of objects. The main states of an object in Hibernate are:...
In Hibernate, both the update and merge methods are used to synchronize the state of an object with the database, but they serve different purposes and have different behaviors. Here’s a breakdown of the differences ...
In Hibernate, both the get() and load() methods are used to retrieve entities from the database, but they have some important differences in their behavior: get(): This method retu...
In Hibernate, both session.save() and session.persist() methods are used to make a transient object persistent, but there are some differences between them in terms of their behavior and usage. Here’s a breakdown of ...
In Hibernate, the Session object is not thread-safe. Each Session instance is designed to be used by a single thread at a time. This means that you should not share a Session instance between multiple threads. ...
In Hibernate, a Session is a fundamental interface that represents a single-threaded unit of work with the database. It is used to interact with the database and manage the lifecycle of persistent objects. Here are s...
Yes, in Hibernate, the SessionFactory is designed to be a thread-safe object. It is intended to be a singleton in your application, meaning that you should create one instance of SessionFactory and share it across mu...
In Hibernate, a SessionFactory is a crucial interface that is responsible for creating Session instances. It is a thread-safe object that is typically created once during the application startup and is used throughou...
In Hibernate, a persistent class is a Java class that is mapped to a database table and is used to represent the data that is stored in that table. When an instance of a persistent class is created and associated with a ...
In Hibernate, you can add criteria to a SQL query using the Criteria API or the Query Language (HQL). Below are examples of how to use both methods to add criteria to your queries. The Criteria A...
HQL (Hibernate Query Language) is a powerful, object-oriented query language used in Hibernate, which is a popular Object-Relational Mapping (ORM) framework for Java. HQL is similar to SQL but operates on the entity obje...
HQL can stand for several things depending on the context. Here are a few common meanings: Hibernate Query Language: In the context of software development, particularly with Java and Hibernate, HQL is a query la...
In Hibernate, SQL queries can be created in several ways, depending on the level of abstraction you want to use. Here are the primary methods for creating SQL queries in Hibernate:
In Hibernate, the configuration object is typically represented by the Configuration class, which is used to set up the Hibernate environment. Two key components of the Hibernate configuration object are: Databas...
Hibernate is a popular Object-Relational Mapping (ORM) framework for Java that simplifies database interactions. Here are the key components of Hibernate: Configuration: The Configuration class is used to...
Hibernate is a popular Object-Relational Mapping (ORM) framework for Java that supports a variety of relational databases. Some of the databases supported by Hibernate include: MySQL PostgreSQL Oracle...
In Hibernate, criteria are used to create queries programmatically, allowing developers to build dynamic queries without writing HQL (Hibernate Query Language) or SQL directly. The Criteria API provides a way to construc...
Object-Relational Mapping (ORM) frameworks provide several advantages over traditional Java Database Connectivity (JDBC) when it comes to interacting with databases. Here are some key benefits of using ORM: Abstrac...