upgrade to java 8

Author: Thomas Gängler

pom.xml

@@ -27,21 +27,53 @@
 	<url>http://dswarm.org/</url>
 	<name>d:swarm - Graph Model</name>
 
+	<prerequisites>
+		<maven>3.0.4</maven>
+	</prerequisites>
+
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<java.source.version>1.7</java.source.version>
-		<java.target.version>1.7</java.target.version>
-		<maven-compiler-plugin.version>3.1</maven-compiler-plugin.version>
-		<maven-assembly-plugin.version>2.4</maven-assembly-plugin.version>
-		<maven-resources-plugin.version>2.6</maven-resources-plugin.version>
-		<maven-install-plugin.version>2.5.1</maven-install-plugin.version>
-		<maven-surefire-plugin.version>2.16</maven-surefire-plugin.version>
-		<maven-clean-plugin.version>2.5</maven-clean-plugin.version>
-		<maven-release-plugin.version>2.4.2</maven-release-plugin.version>
+		<java.source.version>1.8</java.source.version>
+		<java.target.version>1.8</java.target.version>
+		<maven-compiler-plugin.version>3.2</maven-compiler-plugin.version>
+		<maven-assembly-plugin.version>2.5.3</maven-assembly-plugin.version>
+		<maven-resources-plugin.version>2.7</maven-resources-plugin.version>
+		<maven-install-plugin.version>2.5.2</maven-install-plugin.version>
+		<maven-surefire-plugin.version>2.18.1</maven-surefire-plugin.version>
+		<maven-clean-plugin.version>2.6.1</maven-clean-plugin.version>
+		<maven-release-plugin.version>2.5.1</maven-release-plugin.version>
+		<version.maven.plugin.deploy>2.8.2</version.maven.plugin.deploy>
+		<version.maven.plugin.jar>2.6</version.maven.plugin.jar>
+		<version.maven.plugin.site>3.4</version.maven.plugin.site>
+		<version.maven.plugin.version>2.1</version.maven.plugin.version>
+		<version.maven.plugin.license>2.7</version.maven.plugin.license>
 	</properties>
 
 	<build>
 		<plugins>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>versions-maven-plugin</artifactId>
+				<version>${version.maven.plugin.version}</version>
+				<configuration>
+					<allowSnapshots>false</allowSnapshots>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-deploy-plugin</artifactId>
+				<version>${version.maven.plugin.deploy}</version>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-site-plugin</artifactId>
+				<version>${version.maven.plugin.site}</version>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-jar-plugin</artifactId>
+				<version>${version.maven.plugin.jar}</version>
+			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
@@ -106,7 +138,7 @@
 			<plugin>
 				<groupId>com.mycila</groupId>
 				<artifactId>license-maven-plugin</artifactId>
-				<version>2.6</version>
+				<version>${version.maven.plugin.license}</version>
 				<configuration>
 					<header>com/mycila/maven/plugin/license/templates/APACHE-2.txt</header>
 					<properties>
@@ -146,6 +178,16 @@
 		</testResources>
 	</build>
 
+	<reporting>
+		<plugins>
+			<plugin>
+				<groupId>org.codehaus.mojo</groupId>
+				<artifactId>versions-maven-plugin</artifactId>
+				<version>${version.maven.plugin.version}</version>
+			</plugin>
+		</plugins>
+	</reporting>
+
 	<distributionManagement>
 		<repository>
 			<id>deployment</id>