Modules

Core

The Holon Platform Core module represents the platform foundation, providing the definition of the overall architecture, base structures and APIs, such as the Property model, the Datastore API and the Context resources support.

GitHub Source code: Holon Core GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.core</groupId>
    <artifactId>bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.core
Artifact id Description
holon-core Platform core components, services and APIs
holon-http HTTP messages support
holon-auth Authentication and Authorization
holon-auth-jwt JSON Web Tokens support
holon-spring Spring integration
holon-spring-security Spring Security integration
holon-spring-boot Spring Boot integration
holon-starter Base Spring Boot starter
holon-starter-security Base Spring Boot starter with Spring Security integration
holon-starter-test Base Spring Boot starter for Unit tests

JSON

The Holon Platform JSON module provides support for the JSON data-interchange format using the most popular serialization and deserialization libraries: Jackson and Gson. Main features:

1. PropertyBox class JSON serialization and deserialization support.
1. A simple JSON objects serialization and deserialization API, to use concrete JSON parsers implementation in a easier and abstract way.
2. JAX-RS configuration and auto-configuration support.
3. Spring support to configure PropertyBox serialization and deserialization in RestTemplate JSON message converters.
4. Spring Boot support to auto-configure Gson and Jackson ObjectMapper instances with PropertyBox serialization and deserialization capabilities.

GitHub Source code: Holon JSON GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.json</groupId>
    <artifactId>holon-json-bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.json
Artifact id Description
holon-json Holon JSON objects serialization and deserialization API
holon-gson Base Gson configuration for PropertyBox serialization and deserialization support
holon-gson-jaxrs JAX-RS configuration support to use Gson as JSON type messages serializer/deserializer
holon-gson-spring Spring RestTemplate configuration and Gson Spring Boot auto-configuration
holon-jackson Base Jackson configuration for PropertyBox serialization and deserialization support
holon-jackson-jaxrs JAX-RS configuration support for Jackson to enable PropertyBox serialization and deserialization in JSON format
holon-jackson-spring Spring RestTemplate configuration and ObjectMapper Spring Boot auto-configuration

JAX-RS

The Holon Platform JAX-RS module provides support, components and configuration helpers concerning the Java API for RESTful Web Services standard. Main features:

1. A JAX-RS implementation of the core platform RestClient API, a complete and easy to use RESTful web services Java client.
2. A set of standard JAX-RS components to implement server-side API authentication and authorization by using the platform core APIs and services.
3. A complete integration with Swagger (OpenAPI Specification), including support for the PropertyBox core platform data container interface and for Swagger API listing endpoints (both in JSON and YAML formats) configuration.
4. Spring Boot auto-configuration classes to automatically register suitable Spring beans (for example beans annotated with @Path or @Provider) as resources in a JAX-RS compliant server.
5. Spring Boot auto-configuration classes to automatically enable and configure a Resteasy server with Spring integration.
6. A set of Spring Boot starters to setup JAX-RS compliant clients and servers using either Jersey or Resteasy as JAX-RS implementation, Jackson or Gson as JSON provider, Tomcat or Undertow as embedded servlet container.

GitHub Source code: Holon JAX-RS GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jaxrs</groupId>
    <artifactId>holon-jaxrs-bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.jaxrs
Artifact id Description
holon-jaxrs-client JAX-RS implementation of the core platform RestClient API
holon-jaxrs-server JAX-RS server-side authentication and authorization features using platform core APIs and services, such as Realm and AuthContext
holon-jaxrs-swagger Swagger configuration and JAX-RS API listing endpoints with PropertyBox support
holon-jaxrs-spring-boot-client JaxrsClientBuilder Spring Boot auto-configuration
holon-jaxrs-spring-boot-jersey Jersey auto-configuration with automatic registration of Spring beans as JAX-RS resources
holon-jaxrs-spring-boot-resteasy Resteasy auto-configuration with Spring integration
holon-starter-jersey Spring Boot JAX-RS server starter using Jersey, Tomcat and Jackson as JSON provider
holon-starter-jersey-gson Spring Boot JAX-RS server starter using Jersey, Tomcat and Gson as JSON provider
holon-starter-jersey-undertow Spring Boot JAX-RS server starter using Jersey, Undertow and Jackson as JSON provider
holon-starter-jersey-undertow-gson Spring Boot JAX-RS server starter using Jersey, Undertow and Gson as JSON provider
holon-starter-jersey-client Spring Boot JAX-RS client starter using Jersey and Jackson as JSON provider
holon-starter-jersey-client-gson Spring Boot JAX-RS client starter using Jersey and Gson as JSON provider
holon-starter-resteasy Spring Boot JAX-RS server starter using Resteasy, Tomcat and Jackson as JSON provider
holon-starter-resteasy-gson Spring Boot JAX-RS server starter using Resteasy, Tomcat and Gson as JSON provider
holon-starter-resteasy-undertow Spring Boot JAX-RS server starter using Resteasy, Undertow and Jackson as JSON provider
holon-starter-resteasy-undertow-gson Spring Boot JAX-RS server starter using Resteasy, Undertow and Gson as JSON provider
holon-starter-resteasy-client Spring Boot JAX-RS client starter using Resteasy and Jackson as JSON provider
holon-starter-resteasy-client-gson Spring Boot JAX-RS client starter using Resteasy and Gson as JSON provider

JDBC

The Holon Platform JDBC module provides the Java DataBase Connectivity support, dealing with javax.sql.DataSource configuration and management in single or multiple persistence source enviroments. Main features:

1. A DataSourceBuilder API to create and configure DataSource instances using a configuration property source and supporting the most popular and best performing pooling DataSource implementations (HikariCP, Apache DBCP2 and Tomcat JDBC Connection Pool).
2. A basic multi-tenant DataSource implementation using the platform foundation TenantResolver interface.
3. Spring integration for DataSource beans configuration and initialization (with Spring’s transaction management support) using the @EnableDataSource configuration annotation.
4. Spring Boot integration for single or multiple DataSource beans auto-configuration using application.properties/application.yaml configuration properties.

GitHub Source code: Holon JDBC GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.2 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jdbc</groupId>
    <artifactId>holon-jdbc-bom</artifactId>
    <version>5.1.2</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
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

JDBC Datastore

The Holon Platform JDBC Datastore module is the reference Datastore implementation using the JDBC API and the SQL language for data access and manipulation.
The JDBC Datastore leverages on dialects to transparently support different RDBMS vendors. Dialects for the following RDBMS are provided out-of-the-box: MySQL, MariaDB, Oracle Database, Microsoft SQL Server, PostgreSQL, IBM DB2, IBM Informix, SAP HANA, H2, HSQLDB, Derby, SQLite.

A complete Spring and Spring Boot support is provided for JDBC Datastore integration in a Spring environment and for auto-configuration facilities.

GitHub Source code: Holon JPA Datastore GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.2 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jdbc</groupId>
    <artifactId>holon-datastore-jdbc-bom</artifactId>
    <version>5.1.2</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.jdbc
Artifact id Description
holon-datastore-jdbc JDBC Datastore implementation
holon-datastore-jdbc-composer The SQL composer engine based on the Java JDBC API
holon-datastore-jdbc-spring Spring integration using the @EnableJdbcDatastore annotation
holon-datastore-jdbc-spring-boot Spring Boot integration for JDBC Datastore auto-configuration
holon-starter-jdbc-datastore Spring Boot starter for JDBC Datastore auto-configuration
holon-starter-jdbc-datastore-hikaricp Spring Boot starter for JDBC Datastore auto-configuration using the HikariCP pooling DataSource implementation

JPA

Base JPA module of the Holon Platform, which provides base support for the Java Persistence API.

The module makes available a set of Holon bean property and bean property set post processors to deal with JPA entity annotations at bean introspection time, to provide a seamless integration with the Holon Platform Property model.

GitHub Source code: Holon JPA GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jpa</groupId>
    <artifactId>holon-jpa-bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.jpa
Artifact id Description
holon-jpa-bean-processors A bean post processors set for JPA entity bean introspection

JPA Datastore

The Holon Platform JPA Datastore module is the reference Datastore implementation using the JPA API and the JPQL language for data access and manipulation.
The JPA Datastore supports any standard JPA ORM library, although is tested and optimized specifically for Hibernate and EclipseLink.

A complete Spring and Spring Boot support is provided for JPA Datastore integration in a Spring environment and for auto-configuration facilities.

GitHub Source code: Holon JPA Datastore GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jpa</groupId>
    <artifactId>holon-datastore-jpa-bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.jpa
Artifact id Description
holon-datastore-jpa JPA Datastore implementation
holon-datastore-jpa-spring Spring integration using the @EnableJpa and @EnableJpaDatastore annotations
holon-datastore-jpa-spring-boot Spring Boot integration for JPA stack and Datastore auto-configuration
holon-starter-jpa-hibernate Spring Boot starter for JPA stack and Datastore auto-configuration using Hibernate ORM
holon-starter-jpa-eclipselink Spring Boot starter for JPA stack and Datastore auto-configuration using EclipseLink ORM

QueryDSL integration for the JPA Datastore

The Holon Platform JPA QueryDSL module provides QueryDSL integration for the JPA Datastore.

The QueryDsl commodity provided by this module allows to mix QueryDSL expressions and predicates with standard platform query expressions, such as QueryFilter, QuerySort and QueryAggregation. Furthermore, this module provides integration classes to use QueryDSL expressions as Datastore expressions (such as EntityPath and Path QueryDSL types) and some Spring Boot starters for auto-configuration.

GitHub Source code: Holon JPA QueryDSL GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.1 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.jpa</groupId>
    <artifactId>holon-datastore-jpa-querydsl-bom</artifactId>
    <version>5.1.1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.jpa
Artifact id Description
holon-datastore-jpa-querydsl JPA Datastore QueryDSL integration
holon-starter-jpa-querydsl-hibernate Spring Boot starter for JPA stack and Datastore auto-configuration with QueryDSL integration using Hibernate ORM
holon-starter-jpa-querydsl-eclipselink Spring Boot starter for JPA stack and Datastore auto-configuration with QueryDSL integration using EclipseLink ORM

Vaadin UI

The Holon Platform Vaadin UI module represents the platform support for the Vaadin 8 web applications framework, focusing on user interface components and data binding features. Main features:

1. A Java API to build (using fluent builders), manage and use the web application UI components.
2. Integration with the platform foundation architecture, such as the Property model and the Datastore API, the authentication, authorization and localization support.
3. A powerful and easy to use View navigator to manage the web application virtual pages.
4. A complete Spring and Spring Boot integration.

GitHub Source code: Holon Vaadin GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.3 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.vaadin</groupId>
    <artifactId>holon-vaadin-bom</artifactId>
    <version>5.1.3</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.vaadin
Artifact id Description
holon-vaadin Core artifact
holon-vaadin-navigator View navigation support
holon-vaadin-spring Spring integration
holon-vaadin-spring-boot Spring Boot integration
holon-starter-vaadin Spring Boot starter
holon-starter-vaadin-undertow Spring Boot starter using Undertow as embedded servlet container

Vaadin 7 compatibility module

A Vaadin 7 compatibility module is available, providing an API which matches at 99% the Holon Vaadin 8 module API, only not compatible classes or methods are different for obvious reasons. See the documentation for further information.

GitHub Source code: Holon Vaadin 7 GitHub repository
Javadoc API API: Javadocs
Reference manual Reference manual: HTML | PDF

License: Apache 2.0

Latest release version: 5.1.2 | Releases | Issues Module BOM:
<dependencyManagement>
  <dependency>
    <groupId>com.holon-platform.vaadin7</groupId>
    <artifactId>holon-vaadin-bom</artifactId>
    <version>5.1.2</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
</dependencyManagement>
Using the platform BOM is recommended.
Group id: com.holon-platform.vaadin7
Artifact id Description
holon-vaadin Core artifact
holon-vaadin-navigator View navigation support
holon-vaadin-spring Spring integration
holon-vaadin-spring-boot Spring Boot integration
holon-starter-vaadin Spring Boot starter
holon-starter-vaadin-undertow Spring Boot starter using Undertow as embedded servlet container

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