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The Spring Data JPA is an implementation of the repository abstraction that is a key building block of domain-driven design based on the Java application framework Spring. It transparently supports all available JPA implementations and supports CRUD operations as well as the convenient execution of database queries.
The Jakarta Persistence Query Language (JPQL; formerly Java Persistence Query Language) is a platform-independent object-oriented query language [1]: 284, §12 defined as part of the Jakarta Persistence (JPA; formerly Java Persistence API) specification.
Spring Roo's mission statement is to "fundamentally improve Java developer productivity without compromising engineering integrity or flexibility". [3]The technology was first demonstrated during the opening keynote at the SpringOne Europe developer conference on 27 April 2009, with an initial alpha release concurrently being published.
Spring Framework 4.0 was released in December 2013. [10] Notable improvements in Spring 4.0 included support for Java SE (Standard Edition) 8, Groovy 2, [11] [12] some aspects of Java EE 7, and WebSocket. [13] Spring Framework 4.2.0 was released on 31 July 2015 and was immediately upgraded to version 4.2.1, which was released on 01 Sept 2015. [14]
The Jakarta Standard Tag Library (JSTL; formerly JavaServer Pages Standard Tag Library) is a component of the Java EE Web application development platform. It extends the JSP specification by adding a tag library of JSP tags for common tasks, such as XML data processing, conditional execution, database access, loops and internationalization.
Hibernate ORM (or simply Hibernate) is an object–relational mapping [2]: §1.2.2, [12] tool for the Java programming language. It provides a framework for mapping an object-oriented domain model to a relational database.
Spring: Java: Yes Yes Push Yes Hibernate, iBatis, more Mock objects, unit tests Spring Security (formerly Acegi) JSP, Commons Tiles, Velocity, Thymeleaf, more Ehcache, more Commons validator, Bean Validation: Stripes: Java Yes Yes Pull Yes JPA, Hibernate Yes framework extension Yes Yes Vaadin: Java GWT: Push-pull Yes Yes Yes Yes Yes Wavemaker
Ebean has a simpler API than JPA. It achieves this through its 'Session Less' architecture. Ebean does not require a JPA EntityManager or JDO PersistenceManager and this removes the concepts of detached/attached beans and the issues associated with flushing/clearing and 'session management' of EntityManagers.