Apache OJB: Difference between revisions

Apache ObJectRelationalBridge
Developer(s)	Apache Software Foundation
Stable release	1.0.55 / December 31, 2005; 18 years ago
Written in	Java
Operating system	Cross-platform
Type	Object-relational mapping
License	Apache License 2.0
Website	db.apache.org/ojb/

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Apache ObJectRelationalBridge (OJB) is an Object/Relational mapping tool that allows transparent persistence for Java Objects against relational databases. It was released on April 6, 2005.^[1]

As of January 16, 2011 Apache ObJectRelationalBridge has been retired.^[2]

Features

OJB is an open source project. It is lightweight and easy to use, requiring simply configure two files to implement a persistence layer. It is easy to integrate into an existing application because it does not generate code. It allows the use of different patterns of persistence: owner (PersistenceBroker API), JDO and Object Data Management Group (ODMG).

Functionality

OJB uses an XML based Object/Relational mapping. The mapping resides in a dynamic MetaData layer, which can be manipulated at runtime through a simple Meta-Object-Protocol (MOP) to change the behaviour of the persistence kernel.

Configuration

At least two files are required to configure OJB: OJB.properties and repository.xml

Allocation

For mapping a 1-1 relationship, for example, you have two tables: person and account. In this case, a person has an account and vice versa.

References

^ "- Linux Today - Internetnews.com: Apache releases Object Relational Bridge". Archived from the original on 2012-09-02. Retrieved 2011-05-07.
^ Apache ObJectRelationalBridge (OJB), Apache Software Foundation.

External links

Apache ObJectRelationalBridge Archived 2006-01-26 at the Wayback Machine

This free and open-source software article is a stub. You can help Wikipedia by expanding it.

[1] "- Linux Today - Internetnews.com: Apache releases Object Relational Bridge". Archived from the original on 2012-09-02. Retrieved 2011-05-07.

[2] Apache ObJectRelationalBridge (OJB), Apache Software Foundation.

[1]

[2]

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+{{Short description|Java software tool}}
-{{Other uses|Organization of the Jews in Bulgaria|Orthodox Jewish Bible}}
+{{redirect|OJB|other uses|Organization of the Jews in Bulgaria|and|Orthodox Jewish Bible}}
-{{Infobox Software
+{{Infobox software
 | name                   = Apache ObJectRelationalBridge
 | logo                   =
@@ Line 8: / Line 9: @@
 | developer              = [[Apache Software Foundation]]
 | latest release version = 1.0.55
-| latest release date    = {{release date|mf=yes|2005|12|31}}
+| latest release date    = {{Start date and age|mf=yes|2005|12|31}}
 | latest preview version =
 | latest preview date    =
@@ Line 17: / Line 18: @@
 | website                = {{URL|https://db.apache.org/ojb/}}
 }}
+'''Apache ObJectRelationalBridge''' ('''OJB''') is an Object/Relational mapping tool that allows transparent persistence for [[Java (programming language)|Java]] Objects against [[relational database]]s. It was released on April 6, 2005.<ref>{{Cite web |url=http://www.linuxtoday.com/developer/2005040602826NWSVDV |title=- Linux Today - Internetnews.com: Apache releases Object Relational Bridge |access-date=2011-05-07 |archive-date=2012-09-02 |archive-url=https://web.archive.org/web/20120902041816/http://www.linuxtoday.com/developer/2005040602826NWSVDV |url-status=dead }}</ref>
-'''Apache ObJectRelationalBridge''' ('''OJB''') is an Object/Relational mapping tool that allows transparent persistence for [[Java (programming language)|Java]] Objects against [[relational database]]s. It was released on April 6, 2005.<ref>[http://www.linuxtoday.com/developer/2005040602826NWSVDV - Linux Today - Internetnews.com: Apache releases Object Relational Bridge]</ref>
 As of January 16, 2011 Apache ObJectRelationalBridge has been retired.<ref>[http://attic.apache.org/projects/ojb.html Apache ObJectRelationalBridge (OJB)], Apache Software Foundation.</ref>
 ==Features==
+OJB is  an ''[[Open-source software|open source]]'' project. It is lightweight and easy to use, requiring simply configure two files to implement a persistence layer. It is easy to integrate into an existing application because it does not generate code.
-OJB is  an ''[[open source]]'' project.
-It is lightweight and easy to use requiring simply configure two files to implement a persistence layer.
-It is easy to integrate into an existing application because it does not generate code.
 It allows the use of different patterns of persistence: owner (PersistenceBroker [[API]]), [[Java Data Objects|JDO]] and Object Data Management Group  ([[ODMG]]).
 ==Functionality==
-OJB uses an XML based Object/Relational mapping. The mapping resides in a dynamic [[Metadata|MetaData]] layer, which can be manipulated at runtime through a simple [[Metaobject|Meta-Object-Protocol]] (MOP) to change the behaviour of the [[Persistence (computer science)|persistence]] kernel.
+OJB uses an [[XML]] based Object/Relational mapping. The mapping resides in a dynamic [[Metadata|MetaData]] layer, which can be manipulated at runtime through a simple [[Metaobject|Meta-Object-Protocol]] (MOP) to change the behaviour of the [[Persistence (computer science)|persistence]] kernel.
 ==Configuration==
@@ Line 38: / Line 36: @@
 ==See also==
-{{Portal|Free software}}
+{{Portal|Free and open-source software}}
 *[[Apache OpenJPA]]
@@ Line 45: / Line 43: @@
 ==External links==
-*[http://db.apache.org/ojb/ Apache ObJectRelationalBridge]
+*[http://db.apache.org/ojb/ Apache ObJectRelationalBridge] {{Webarchive|url=https://web.archive.org/web/20060126230948/http://db.apache.org/ojb/ |date=2006-01-26 }}
-{{Apache}}
+{{Apache Software Foundation}}
-[[Category:Apache Software Foundation|OJB]]
 [[Category:Apache Software Foundation projects|OJB]]
 [[Category:Java enterprise platform]]
@@ Line 57: / Line 54: @@
-{{Software-stub}}
+{{free-software-stub}}

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