Polymorphism in Java

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Repository Pattern

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This pattern belongs to  Object-Relational Metadata Mapping Patterns  Catalog and this Catalog belongs to  Patterns of Enterprise Application Architecture . Intent Repository layer is added between the domain and data mapping layers to isolate domain objects from details of the database access code and to minimize scattering and duplication of query code.  The Repository pattern is especially useful in systems where a number of domain classes are large or heavy querying is utilized. Real World Examples Spring Data Applicability Use the Repository pattern when the number of domain objects is large you want to avoid duplication of query code you want to keep the database querying code in a single place you have multiple data sources Explanation A system with a complex domain model often benefits from a layer, such as the one provided by Data Mapper , that isolates domain objects from details of the database access code. In such systems, it can be worthwh...
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Design Patterns used in Hibernate Framework

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In this post, let's discuss a different kind of design patterns which are widely used in the Hibernate Framework. Design Patterns denote the best computer programming practices in the object-oriented software development. Hibernate framework has been built by using the following design pattern or standard practices. I list few known design patterns used in Hibernate Framework. Please mention in a comment, if you know any other design patterns used in Hibernate Framework. You can also read my post of  Design Patterns used in Spring Framework Domain Model Pattern The domain model is treated as POJO in Hibernate. The domain model is an object model of the domain that incorporates both behavior and data. Read more about Domain Model Pattern here https://stackoverflow.com/questions/41335249/domain-model-pattern-example Proxy Design Pattern Proxy Pattern for lazy loading - https://docs.jboss.org/hibernate/orm/3.3/reference/en/html/performance.html Proxy Pattern provides a surrogate ...
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