Refactor exec-maven-plugin version and usage

.travis/build-coveralls.sh

@@ -4,7 +4,7 @@ set -e
 source .travis/logger.sh
 source .travis/common-functions.sh
 
-VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+VERSION=$(get_pom_version)
 log_info "Building PMD Coveralls.io report ${VERSION} on branch ${TRAVIS_BRANCH}"
 
 if ! travis_isPush; then

.travis/build-deploy.sh

@@ -7,7 +7,7 @@ source .travis/github-releases-api.sh
 source .travis/sourceforge-api.sh
 source .travis/regression-tester.sh
 
-VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+VERSION=$(get_pom_version)
 log_info "Building PMD ${VERSION} on branch ${TRAVIS_BRANCH}"
 
 MVN_BUILD_FLAGS="-B -V"

.travis/build-doc.sh

@@ -8,7 +8,7 @@ source .travis/sourceforge-api.sh
 source .travis/pmd-code-api.sh
 
 function main() {
-    VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+    VERSION=$(get_pom_version)
     log_info "Building PMD Documentation ${VERSION} on branch ${TRAVIS_BRANCH}"
 
     #

.travis/build-publish.sh

@@ -6,7 +6,7 @@ source .travis/common-functions.sh
 source .travis/github-releases-api.sh
 source .travis/sourceforge-api.sh
 
-VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+VERSION=$(get_pom_version)
 log_info "PMD Release ${VERSION}"
 
 if ! travis_isPush; then

.travis/build-sonar.sh

@@ -4,7 +4,7 @@ set -e
 source .travis/logger.sh
 source .travis/common-functions.sh
 
-VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+VERSION=$(get_pom_version)
 log_info "Building PMD Sonar ${VERSION} on branch ${TRAVIS_BRANCH}"
 
 if ! travis_isPush; then

.travis/common-functions.sh

@@ -53,3 +53,7 @@ function travis_isWindows() {
         return 1
     fi
 }
+
+function get_pom_version() {
+    echo $(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:3.0.0:exec)
+}

pmd-doc/pom.xml

@@ -24,7 +24,6 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>exec-maven-plugin</artifactId>
-                        <version>3.0.0</version>
                         <executions>
                             <execution>
                                 <id>generate-rule-docs</id>

pom.xml

@@ -265,6 +265,11 @@
                     <artifactId>build-helper-maven-plugin</artifactId>
                     <version>3.0.0</version>
                 </plugin>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>exec-maven-plugin</artifactId>
+                    <version>3.0.0</version>
+                </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-source-plugin</artifactId>