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https://wiki.eclipse.org/EclipseLink/Examples/JPA/History
Tracking Changes Using History Policy. EclipseLink provides extended support for tracking all changes made to the database. The EclipseLink HistoryPolicy can be configured on a ClassDescriptor to store a mirror table of the original that will store the state of the object at any point in time.
http://www.eclipse.org/eclipselink/
MOXy XML or JSON. The EclipseLink MOXy component enables Java developers to efficiently bind Java classes to XML or JSON. MOXy implements JAXB as well as SDO standards allowing developers to provide their mapping information through annotations as well as providing support for storing the mappings in XML format.
https://wiki.eclipse.org/EclipseLink/Development/JPA
EclipseLink will introduce JPA 2.0 features with the following goals in mind: Remain a compliant JPA 1.0 implementation during the development of 2.0 functionality. This is a major requirement since we are working towards a 1.0 release of EclipseLink which must be JPA 1.0 compliant.
https://en.wikipedia.org/wiki/Oracle_TopLink
Oracle TopLink is mapping and persistence framework for Java developers. TopLink is produced by Oracle and is a part of Oracle's OracleAS, WebLogic, and OC4J servers. It is an object-persistence and object-transformation framework. TopLink provides development tools and run-time functionalities that ease the development process and help increase functionality.Operating system: Cross-platform
https://en.wikipedia.org/wiki/EclipseLink
EclipseLink is the open source Eclipse Persistence Services Project from the Eclipse Foundation.The software provides an extensible framework that allows Java developers to interact with various data services, including databases, web services, Object XML mapping (OXM), and Enterprise Information Systems (EIS). EclipseLink supports a number of persistence standards including:Operating system: Cross-platform
https://www.eclipse.org/forums/index.php/t/1075104/
I was able to add user columns using the code below. Note that it needs a separate column for the user who modified it and the user who deleted it as it currently isn't possible to do a separate insert when someone deletes it and it uses the same row as the previous modification.
https://java-persistence-performance.blogspot.com/2013/06/eclipselink-supports-hql-and-several.html
Jun 20, 2013 · EclipseLink supports HQL and several advanced new JPQL features ... Some databases support a special syntax for this type of query. In Oracle the CONNECT BY clause allows for hierarchical queries to be expressed. ... Historical queries allow you to query back in time. This requires that you use EclipseLink's history support, or use a database ...
https://projects.eclipse.org/projects/ee4j.eclipselink
The EclipseLink project's goal is to provide a complete persistence solution that is both comprehensive and universal. It will run in any Java environment and read and write objects to virtually any type of data source, including relational databases, XML, or EIS systems.
https://en.wikibooks.org/wiki/Java_Persistence/Advanced_Topics
Some JPA providers have support for history. TopLink / EclipseLink : Support Oracle flashback querying as well as application specific history. Historical queries can be defined using the query hint "eclipselink.history.as-of" or Expression queries.
https://stackoverflow.com/questions/35380455/why-does-eclipselink-support-the-cascadeondelete-with-elementcollection
Why does EclipseLink support the @CascadeOnDelete with @ElementCollection? jpa eclipselink cascade. ... Why doesn't EclipseLink simply send a "delete from COMPANY_HISTORY where company_id = <id of company being deleted>" command when the company entity is deleted? Why does it compare all the fields? Thank you for your help!
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