Those who follow Liferay is aware of the fact that the Community Edition version 7 of Liferay, were eliminated quite a bit of components App Server, Database & Clustering Support. For more detail information you can read the blog post by Bryan Cheung published on April 7, 2016.
The Liferay 7 CE no more support OOTB (Out Of The Box):
- Application Server: Oracle WebLogic, IBM WebSphere
- Clustering
- MultiVM Cache
- Oracle Database, Microsoft SQL Server, IBM DB2, Sybase DB
This project add support to the Oracle Database, SQL Server. Liferay has performed refactorting the code so that it is possible and easy to add support for databases no longer supported OOTB (out-of-the-box)
You can refer to the change log for more information about the changes made to.
Fai una donazione su PayPal a Antonio Musarra (author)
I invite you to read the article How to build a Docker Liferay 7.2 image with the Oracle Database support and the How to setup Docker container Oracle Database 19c for Liferay Development Environment which may be interesting for you.
In the following video, I will guide you step-by-step instructions on how to add support for Oracle Database to Liferay 7 Community Edition in the bundled version of Wildfly.
To extend support to other databases, Liferay has decided to refactory code to use Java. Invite you to read SPI (Service Provider Interface) and Creating Extensible Applications (The Java™ Tutorials > The Extension Mechanism > Creating and Using Extensions) SPI is the mechanism that allows you to extend/change the behavior within a system without changing the source. It includes interfaces, classes or methods that the user extends or implements in order to obtain a certain functionality.
In short we must:
- Implement the SPI interface com.liferay.portal.kernel.dao.db.DBFactory. Implementation class inside this project is OracleDBFactory.java
- Implement the abstract class com.liferay.portal.dao.db.BaseDB for Oracle DB. Implementation class inside this project is OracleDB.java
The following code shows how service providers are loaded via SPI.
public DBManagerImpl() {
ServiceLoader<DBFactory> serviceLoader = ServiceLoader.load(
DBFactory.class, DBManagerImpl.class.getClassLoader());
for (DBFactory dbFactory : serviceLoader) {
_dbFactories.put(dbFactory.getDBType(), dbFactory);
}
}Source Code 1 - Shows how service providers are loaded via SPI
To register your service provider, you create a provider configuration file, which is stored in the META-INF/services directory of the service provider's JAR file. The name of the configuration file is the fully qualified class name of the service provider, in which each component of the name is separated by a period (.), and nested classes are separated by a dollar sign ($).
The provider configuration file contains the fully qualified class names (FQCN) of your service providers, one name per line. The file must be UTF-8 encoded. Additionally, you can include comments in the file by beginning the comment line with the number sign (#).
Our file (inside META-INF/services directory) is called com.liferay.portal.kernel.dao.db.DBFactory and contain the
FQCN of this class:
- it.dontesta.labs.liferay.portal.dao.db.OracleDBFactory
- it.dontesta.labs.liferay.portal.dao.db.SQLServerDBFactory
The class diagrams of each database driver are shown below.
Figure 1 - Class diagram of the SQLServerDB driver
Figure 2 - Class diagram of the OracleDB driver
Requirements for build the project
- Sun/Oracle JDK 1.8/JDK 11
- Maven 3.x (for build project)
The driver that adds support for Oracle, SQLServer and DB2 database
is a jar artifact (liferay-portal-database-all-in-one-support-${version}.jar) which
then will be installed in ROOT/WEB-INF/lib (for the Apache Tomcat).
To generate the all in one driver just follow the instructions below.
You can download the latest version binary jar from Maven Central Repository liferay-portal-database-all-in-one-support, by doing so you can avoid doing the build.
$ git clone https://github.com/amusarra/liferay-portal-database-all-in-one-support.git
$ cd liferay-portal-database-all-in-one-support
$ mvn packageConsole 1 - Clone the source project from GitHub and run package goal
The build process create the jar
liferay-portal-database-all-in-one-support-${version}.jar inside the (maven)
target directory.
Since version 7.4 GA3 of Liferay, the so-called Shielded Container mechanism has been introduced, so the directory on which to install the JDBC driver and the driver of this project changes.
In the case of the Tomcat bundle, the new directory is: tomcat-9.0.43/webapps/ROOT/WEB-INF/shielded-container-lib
Figure 3 - New directory installation to db driver for Liferay 7.4 GA3
Below you can see the portal-ext.properties. In the sample file are shown JDBC
configurations sample for Oracle, SQL Server, and DB2.
##
## JDBC
##
#
# Oracle
#
# jdbc.default.driverClassName=oracle.jdbc.OracleDriver
# jdbc.default.username=liferayce7
# jdbc.default.password=liferay12345
# jdbc.default.url=jdbc:oracle:thin:@oracledb.vm.local:1521:xe
#
# DB2
#
# jdbc.default.driverClassName=com.ibm.db2.jcc.DB2Driver
# jdbc.default.url=jdbc:db2://db2.vm.local:50001/lportal:deferPrepares=false;fullyMaterializeInputStreams=true;fullyMaterializeLobData=true;progresssiveLocators=2;progressiveStreaming=2;
# jdbc.default.username=db2inst1
# jdbc.default.password=system
#
# SQL Server
#
# jdbc.default.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
# jdbc.default.username=liferay
# jdbc.default.password=liferay12345
# jdbc.default.url=jdbc:sqlserver://sqlserverdb.vm.local;databaseName=liferayce7Source Code 2 - Sample JDBC connection strings for Oracle, SQL Server and DB2 database
You could also configure database access as a JNDI resource and specify the resource name in configuration.
##
## JDBC
##
#
# Set the JNDI name to lookup the JDBC data source. If none is set,
# then the portal will attempt to create the JDBC data source based on the
# properties prefixed with "jdbc.default."
#
jdbc.default.jndi.name=java:jdbc/LiferayPoolSource Code 3 - Configure the JDBC connection via JNDI
In order for Liferay to be able to connect to the database, it is necessary to install the JDBC driver compatible with the version of the specific database and JVM. Here are the links to the resources to download the JDBC driver.
The following documents (see database section) provide details of the configurations that are certified by Liferay. You can see the complete documents on Liferay Portal.
Figure 4 - Liferay_72_Compatibility_Matrix_Database
The figure below shows an example of connection to the Liferay 7.4 GA3 Oracle database.
Figure 5 - Connection to Liferay 7.4 GA3
- How to build a Docker Liferay 7.2 image with the Oracle Database support
- How to build a Docker Liferay 7.2 image with the SQL Server 2017 Database support
- Liferay 7.1: How to add support for Oracle DB
- Come installare Liferay 7 su JBOSS EAP con il supporto Oracle Database
- Liferay 7 Wildfly: How to add support for Oracle DB (video on Antonio Musarra's Blog YouTube Channel)
- Liferay 7 Community Edition GA5 & Oracle 12c via Docker Composer (video on Antonio Musarra's Blog YouTube Channel)
- Come installare Liferay 7 su JBoss EAP con il supporto per Oracle Database (video on Antonio Musarra's Blog YouTube Channel)
- How to setup Docker container Oracle Database 19c for Liferay Development Environment
SPDX-License-Identifier: LGPL-2.1-or-later
Liferay Portal Database All-In-One is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the License, or (at your option) any later version.
Liferay Portal Database All-In-One is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with Liferay Portal Community Edition. If not, see https://www.gnu.org/licenses/
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