OZG-6839: Remove excludes, add file extensions, add documentation.

README.md

@@ -12,6 +12,7 @@
 * Update protoc-gen to 1.66
 * Update Quarkus Platform to 3.13.3
 * Update Keycloak Adapter to 24.0.5
+* Update [OZGCloud License Generator](ozgcloud-common-license/readme.md)
 
 ### 4.3.2
 * update mapstruct 1.5.5 -> 1.6.0

ozgcloud-common-license/readme.md

-com.mycila# OzgCloud Common license
+# OzgCloud Common license
 
-This is a basic Maven-based project that can be used as license provider for all OzgCloud Projects
+This is a license provider for all OzgCloud Projects.
 
-It provides the the header and full text of the german [EUPL Version 1.2 license][license]
+It uses the ["license-maven-plugin"](https://github.com/mathieucarbou/license-maven-plugin/).
 
+It contains the header and full text of the german [EUPL Version 1.2 license](https://eupl.eu/1.2/de/). The header file is templated to get the correct "year of introduction" for one specific file. The mechanism uses the Git history. 
 
-## Usage
+> [!NOTE]
+> Some developers have a license-header with a *fixed* "year-of-introduction" in their IDE (see [project-setup](https://git.ozg-sh.de/ozgcloud-doc/dokumentation/src/branch/master/Entwicklungsumgebung#code-templates)). Running the plugin may overwrite this value (surprisingly) to a correct value from the Git History.
 
-It is a library, meant to be included as a dependency on any project which may want to make use of it.
+The recommendation is to use the (managed) preconfiguration which ideally suits every project. This config is part of OZG-Parent-Projects ([common-lib](../pom.xml) or [ozgcloud-common-parent](../ozgcloud-common-parent/pom.xml)).
 
-To use it add
+The plugin may get executed:
+* manually - When a developer has to (bulk-) update all files in a project
+* Pre-Push-Hook - To make sure, all pushed files contain license headers
 
+
+## Commands
+
+To add or update the license header to file run:
+```bash
+mvn license:format
+```
+
+To verify if there are files with missing license header run:
+```bash
+mvn license:check
+```
+
+## Configuration
+
+### Use managed Version
+Add inceptionYear to your project pom.xml:
+```xml
+<inceptionYear>2020</inceptionYear>
+```
+
+Add this section to your project main pom.xml:
 ```xml
-<ozgcloud.license.version>1.4.0</ozgcloud.license.version>
+<build>
+    <pluginManagement>
+        <plugins>
+            <plugin>
+                <groupId>com.mycila</groupId>
+                <artifactId>license-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </pluginManagement>
+</build>
 ```
-to the properties section of the pom.xml file.
+It will include the preconfigured License-Plugin to your project.
 
-In the plugins section add
+### Use custom version (older approach) 
+> [!CAUTION]
+> The preconfigured License-Plugin is extended to review Git-History to find the "Year of inception" for a file (see [OZG-6839](https://jira.mgm-tp.com/jira/browse/OZG-6839))
+> If your custom configuration uses the provided [header.txt](src/main/resources/license/eupl_v1_2_de/header.txt), without the Git-Plugin, the year will be missing. 
 
+In your properties section of the pom.xml, add the current version of this:
+
+```xml
+<ozgcloud.license.version>1.8.0</ozgcloud.license.version>
+```
+
+In the plugins section add:
 ```xml
 <plugin>
 	<groupId>com.mycila</groupId>
 	<artifactId>license-maven-plugin</artifactId>
-	<version>4.1</version>
+	<version>4.6</version>
 	<configuration>
-		<licenseSets>
-			<licenseSet>
-				<header>license/eupl_v1_2_de/header.txt</header>
-				<excludes>
-					<exclude>**/README</exclude>
-					<exclude>src/test/resources/**</exclude>
-					<exclude>src/main/resources/**</exclude>
-					<exclude>pom.xml</exclude>
-				</excludes>
-			</licenseSet>
-		</licenseSets>
+		<!-- Your custom configuration -->
 	</configuration>
 	<dependencies>
         <dependency>
@@ -45,21 +80,3 @@ In the plugins section add
     </dependencies>
 </plugin>
 ```
\ No newline at end of file
-To add or update the license header to file run
-```
-mvn license:format
-```
-
-To verify if there are files with missing lisence header run
-```
-mvn license:check
-```
-
-For more information about the usage see the [Plugin Homepage][pluginHomePage]
-
-## License
-
-The project has been released under the [EUPL License][license].
-
-[license]: https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12
-[pluginHomePage]: https://mycila.carbou.me/license-maven-plugin/

pom.xml

@@ -91,15 +91,13 @@
 						<mapping>
 							<proto>SLASHSTAR_STYLE</proto>
 							<config>SCRIPT_STYLE</config>
+							<md>XML_STYLE</md>
+							<yml>SCRIPT_STYLE</yml>
+							<acss>JAVADOC_STYLE</acss>
 						</mapping>
 						<licenseSets>
 							<licenseSet>
 								<header>license/eupl_v1_2_de/header.txt</header>
-								<excludes>
-									<exclude>**/README</exclude>
-									<exclude>src/test/resources/**</exclude>
-									<exclude>src/main/resources/**</exclude>
-								</excludes>
 							</licenseSet>
 						</licenseSets>
 					</configuration>