Maven

Spring boot and Graylog

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Graylog is a platform (free and enterprise) that is useful for log management of aggregated data. It is based on Elasticsearch, MongoDB and Scala. It can display messages and histograms. To send data to a graylog server through an HTTP appender with log4J2, i used the GELF layout with the following configuration : I had … Read more

Add UML diagrams to the JavaDoc

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It is possible to add UML diagrams to the JavaDoc generated during the build phase. The first thing to do is to install Graphviz which is an open source graph visualization software. After installation, add the bin folder (D:\Graphviz\bin for instance) to the PATH environment variable. Then configure the pom.xml : Here i chose to … Read more

M2E problem : Plugin execution not covered by lifecycle configuration

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I am adding to the blogosphere of development-related blogs another post about the “Plugin execution not covered by lifecycle configuration” error. The M2E Plugin 1.0.0 is integrated into Eclipse Indigo (3.7). Apparently, M2E connectors, which are a bridge between Maven and Eclipse, require to provide a connector for every plugin that is used in the … Read more

Handling form-based file upload with GWT and the Apache Jakarta Commons FileUpload library

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Uploading files to a filesystem, a remote server, a database, etc, is a frequent need in web applications. These files are often multipart data (that is of varying types such as XML, HTML, plain text, binary … ). With GWT, a good solution to handle this need is the use of the Apache Jakarta Commons … Read more

Generate the database schema with Hibernate3 Maven Plugin

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There is a nice Maven plugin for JPA/Hibernate that makes it possible to quickly generate the database schema (SQL) and save it in a file.
The artifactId of this plugin is hibernate3-maven-plugin.
It will scan all JPA annotations in the class files of the entities and generate the corresponding SQL queries.
A persistence.xml file is required.

  1. With version 2.2 :

Content of the pom.xml :


<build>
  <plugins>
...
<plugin>
				<groupId>org.codehaus.mojo</groupId>
				<artifactId>hibernate3-maven-plugin</artifactId>	
                                <version>2.2</version>			
				<configuration>
		       	   <components>
						<component>
							<name>hbm2ddl</name>
							<implementation>jpaconfiguration</implementation>																									
						</component>							
					</components>
				   <componentProperties>
                    <drop>true</drop>
                    <create>true</create>
                    <export>false</export>
                    <format>true</format>                    <outputfilename>schema-${DataBaseUser}-${DatabaseName}.sql</outputfilename>
                    <persistenceunit>myPU</persistenceunit>
                    <propertyfile>src/main/resources/database.properties</propertyfile>
                </componentProperties>
			  </configuration>		
			  <dependencies>
			  	<dependency>
					<groupId>com.oracle</groupId>
					<artifactId>ojdbc14</artifactId>
					<version>10.2.0.2.0</version>
				</dependency>			  
			  </dependencies>					
		</plugin>
	  </plugins>
	</build>

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[Tutorial] Log4J with Maven profiles

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Here is a quick tutorial to get your hands dirty with the Log4j logging framework.
Log4j allows logging requests to print to multiple output destinations, also known as appenders.
There are several output destinations: console, files, sockets, emails …
First create a Maven project :
mvn archetype:generate
Choose archetype number 109 (quickstart)

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Assembla

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I found another cool website that offers free workspaces that can be managed with Subversion, Git, Mercurial etc…
Of course it also offers various plans with monthly payments.
Anyway, I just put an empty project in my workspace. Check out the screenshots :

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