[MPLUGIN-428] Never try to retrieve javadoc URL for primitive types (#158)

Author: kwin

maven-plugin-tools-generators/src/main/java/org/apache/maven/tools/plugin/generator/PluginDescriptorFilesGenerator.java

@@ -513,9 +513,15 @@ else if ( type != DescriptorType.LIMITED_FOR_HELP_MOJO || parameter.isEditable()
 
                     GeneratorUtils.element( w, "type", parameter.getType() );
 
-                    if ( type == DescriptorType.XHTML )
+                    if ( type == DescriptorType.XHTML && javadocLinkGenerator != null )
                     {
-                        if ( javadocLinkGenerator != null )
+                        // skip primitives which never has javadoc
+                        if ( parameter.getType().indexOf( '.' ) == -1 )
+                        {
+                            LOG.debug( "Javadoc URLs are not available for primitive types like {}",
+                                       parameter.getType() );
+                        }
+                        else
                         {
                             try
                             {