OOD

OOD is a decentralized and asynchrone ORM (Object-Relational Mapping):

• Compatible with Java 8 and newer
• drivers for MySQL, PostgreSQL, H2, H2 for Android (>=Android 8, >=API26), HSQLDB. When using Android driver of H2, please initialize android context by affecting variable 'com.distrimind.util.harddrive.AndroidHardDriveDetect.context'
• Transparent decentralized and secured database synchronization
  • Automatically synchronize database with other authorized peers, even if peers where disconnected (asynchronous mode).
  • Manage eventual conflicts during database synchronization
  • Automatically backup database and it historical to authorized servers and use end-to-end encryption : the servers are not able to read database in clear.
  • Autotatically synchronize peers through server side database backup if peers are not connected (asynchronous mode)
  • Permit to revert database to an old version with a given time, and synchronize the restoration toward others peers and servers. It is possible to choose data source from local backup, other peers backup, or server backup.
  • Backups cannot be removed into servers from peers for a certain period. They cannot also be removed from a peer into a distant peer. This permit to garuantee the restoration even after an attack of a ransomware.
  • Permit to restore database of peers thanks to other peers or thanks to servers
  • Automatically synchronize peers though intermediate peers when direct connections are not possible
  • Use encryption profile provider and to manage different version of secret keys in the case where a secret key was compromised
• pseudo SQL querries possible (where clause)

Changes

See historical of changes

How to use it ?

With Gradle :

Adapt into your build.gradle file, the next code :

	...
	dependencies {
		...
		api(group:'com.distrimind.ood', name: 'OOD', version: '3.3.0-STABLE')
		//choose one of these optional drivers for H2 database
		api(group:'com.h2database', name: 'h2', version: '2.1.210')
		//choose this optional driver for HSQLdb
		api(group:'org.hsqldb', name: 'hsqldb', version: '2.6.1')
		//choose this optional driver for MySQL
		api(group: 'mysql', name: 'mysql-connector-java', version: '8.0.28')
		//choose this optional driver for PostgreSQL
		api(group: 'org.postgresql', name: 'postgresql', version: '42.3.2')
	}
	...

Librairies are available on Maven Central. You can check signatures of dependencies with this public GPG key. You can also use the next repository :

	...
	repositories {
		...
		maven {
	       		url "https://artifactory.distri-mind.fr:443/artifactory/gradle-release/"
	   	}
		...
	}
	...

To know what last version has been uploaded, please refer to versions availables into this repository

With Maven :

Adapt into your pom.xml file, the next code :

	...
	<project>
		...
		<dependencies>
			...
			<dependency>
				<groupId>com.distrimind.ood</groupId>
				<artifactId>OOD</artifactId>
				<version>3.3.0-STABLE</version>
			</dependency>
			<!-- choose one of these optional drivers for H2 database-->
				<dependency>
					<groupId>com.h2database</groupId>
					<artifactId>h2</artifactId>
					<version>2.1.210</version>
				</dependency>

			<!-- choose one of these optional drivers for HSQLDB-->
				<dependency>
					<groupId>org.hsqldb</groupId>
					<artifactId>hsqldb</artifactId>
					<version>2.6.1</version>
				</dependency>
			<!-- choose this optional driver for MySQL-->
				<dependency>
					<groupId>mysql</groupId>
					<artifactId>mysql-connector-java</artifactId>
					<version>8.0.28</version>
				</dependency>
			<!-- choose this optional driver for PostgreSQL-->
				<dependency>
					<groupId>org.postgresql</groupId>
					<artifactId>postgresql</artifactId>
					<version>42.3.2</version>
				</dependency>
			...
		</dependencies>
		...
	</project>
	...

Librairies are available on Maven Central. You can check signatures of dependencies with this public GPG key. You can also use the next repository :

	...
	<repositories>
		...
		<repository>
			<id>DistriMind-Public</id>
			<url>https://artifactory.distri-mind.fr:443/artifactory/gradle-release/</url>
		</repository>
		...
	</repositories>
	...		

To know what last version has been uploaded, please refer to versions availables into this repository

Requirements under Ubuntu/Debian :

• Please install the package ethtool, rng-tools, mtr(only debian)