JarCastingHolon platform JDBC module
Latest release: 5.5.0
This is the JDBC module of the Holon Platform, which provides Java DataBase Connectivity support, dealing with javax.sql.DataSource configuration and management in single or multiple persistence source enviroments.
The module main features are:
- A
DataSourceBuilderAPI to create and configurejavax.sql.DataSourceinstances using a configuration property source and supporting the most popular and best performing pooling DataSource implementations (HikariCP, Apache DBCP2 and Tomcat JDBC Connection Pool). - A basic multi-tenant DataSource implementation using the platform foundation
TenantResolverinterface. - Spring integration for
javax.sql.DataSourcebeans configuration and initialization (with Spring's transaction management support) using the@EnableDataSourceconfiguration annotation. - Spring Boot integration for single or multiple
javax.sql.DataSourcebeans auto-configuration usingapplication.properties/application.yamlconfiguration properties.
See the module documentation for details.
Just like any other platform module, this artifact is part of the Holon Platform ecosystem, but can be also used as a stand-alone library.
See Getting started and the platform documentation for further details.
At-a-glance overview
JDBC DataSource configuration:
DataSourceConfigProperties config = DataSourceConfigProperties.builder()
.withPropertySource("datasource.properties").build();
DataSource dataSource = DataSourceBuilder.create().build(config);
JDBC DataSource builder:
DataSource dataSource = DataSourceBuilder.builder()
.type(DataSourceType.HIKARICP)
.url("jdbc:h2:mem:testdb")
.username("sa")
.minPoolSize(5)
.withInitScriptResource("init.sql")
.build();
Spring Boot multiple DataSource auto-configuration:
holon:
datasource:
one:
url: "jdbc:h2:mem:testdb1"
username: "sa"
two:
url: "jdbc:h2:mem:testdb2"
username: "sa"
See the module documentation for the user guide and a full set of examples.
Code structure
See Holon Platform code structure and conventions to learn about the "real Java API" philosophy with which the project codebase is developed and organized.
Getting started
System requirements
The Holon Platform is built using Java 8, so you need a JRE/JDK version 8 or above to use the platform artifacts.
Releases
See releases for the available releases. Each release tag provides a link to the closed issues.
Obtain the artifacts
The Holon Platform is open source and licensed under the Apache 2.0 license. All the artifacts (including binaries, sources and javadocs) are available from the Maven Central repository.
The Maven group id for this module is com.holon-platform.jdbc and a BOM (Bill of Materials) is provided to obtain the module artifacts:
Maven BOM:
<dependencyManagement>
<dependency>
<groupId>com.holon-platform.jdbc</groupId>
<artifactId>holon-jdbc-bom</artifactId>
<version>5.5.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencyManagement>
See the Artifacts list for a list of the available artifacts of this module.
Using the Platform BOM
The Holon Platform provides an overall Maven BOM (Bill of Materials) to easily obtain all the available platform artifacts:
Platform Maven BOM:
<dependencyManagement>
<dependency>
<groupId>com.holon-platform</groupId>
<artifactId>bom</artifactId>
<version>${platform-version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencyManagement>
See the Artifacts list for a list of the available artifacts of this module.
Build from sources
You can build the sources using Maven (version 3.3.x or above is recommended) like this:
mvn clean install
Getting help
-
Check the platform documentation or the specific module documentation.
-
Ask a question on Stack Overflow. We monitor the
holon-platformtag. -
Report an issue.
-
A commercial support is available too.
Examples
See the Holon Platform examples repository for a set of example projects.
Contribute
See Contributing to the Holon Platform.
License
All the Holon Platform modules are Open Source software released under the Apache 2.0 license.
Artifacts list
Maven group id: com.holon-platform.jdbc
| Artifact id | Description |
|---|---|
holon-jdbc |
Core artifact, providing DataSourceBuilder API and multi-tenancy support |
holon-jdbc-spring |
Spring integration using the @EnableDataSource annotation |
holon-jdbc-spring-boot |
Spring Boot integration for DataSource auto-configuration |
holon-starter-jdbc |
Spring Boot starter for DataSource auto-configuration |
holon-starter-jdbc-hikaricp |
Spring Boot starter for DataSource auto-configuration using the HikariCP pooling DataSource implementation |
holon-jdbc-bom |
Bill Of Materials |
documentation-jdbc |
Documentation |
