[4.x] Plugin updates (helidon-io#8687)

* Fail on Javadoc warning switch as a maven property.
* Maven dependency check module added to non-pom packaging modules, skipped by default.
* Updated helidon-codegen and helidon-common modules to use the dependency and javadoc updated setup.
* Adding `helidon-config` to keep backward compatibility of examples using webserver.
* Helidon common mapper is not required by reactive streams.
* Set phase to `none` in project pom, so it is not executed when the plugin is added for different executions.

Author: tomas-langer

codegen/apt/pom.xml

@@ -40,6 +40,10 @@
             <groupId>io.helidon.codegen</groupId>
             <artifactId>helidon-codegen</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.codegen</groupId>
+            <artifactId>helidon-codegen-class-model</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>

codegen/class-model/pom.xml

@@ -32,6 +32,10 @@
     </description>
 
     <dependencies>
+        <dependency>
+            <groupId>io.helidon.common</groupId>
+            <artifactId>helidon-common</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.common</groupId>
             <artifactId>helidon-common-types</artifactId>

codegen/class-model/src/main/java/io/helidon/codegen/classmodel/ModelComponent.java

@@ -49,8 +49,8 @@ abstract static class Builder<B extends Builder<B, T>, T extends ModelComponent>
         /**
          * Whether to include import type information among the imports.
          *
-         * @param includeImport
-         * @return
+         * @param includeImport whether imports should be included
+         * @return updated builder instance
          */
         public B includeImport(boolean includeImport) {
             this.includeImport = includeImport;

codegen/codegen/pom.xml

@@ -31,6 +31,10 @@
     <description>Code generation common utilities</description>
 
     <dependencies>
+        <dependency>
+            <groupId>io.helidon.common</groupId>
+            <artifactId>helidon-common</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.common</groupId>
             <artifactId>helidon-common-types</artifactId>

codegen/codegen/src/main/java/io/helidon/codegen/CodegenException.java

@@ -23,6 +23,10 @@
  * This exception can hold {@link #originatingElement()} that may be used to provide more information to the user.
  */
 public class CodegenException extends RuntimeException {
+    /**
+     * Originating element, depends on which codegen implementation is used.
+     * For annotation processor, this could be the Element that caused this exception.
+     */
     private final Object originatingElement;
 
     /**

codegen/compiler/pom.xml

@@ -32,6 +32,10 @@
     </description>
 
     <dependencies>
+        <dependency>
+            <groupId>io.helidon.common</groupId>
+            <artifactId>helidon-common</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.codegen</groupId>
             <artifactId>helidon-codegen</artifactId>

codegen/helidon-copyright/pom.xml

@@ -34,6 +34,14 @@
     </description>
 
     <dependencies>
+        <dependency>
+            <groupId>io.helidon.common</groupId>
+            <artifactId>helidon-common</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.helidon.common</groupId>
+            <artifactId>helidon-common-types</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.helidon.codegen</groupId>
             <artifactId>helidon-codegen</artifactId>

codegen/helidon-copyright/src/main/java/io/helidon/codegen/helidon/copyright/HelidonCopyrightProvider.java

@@ -45,6 +45,12 @@ public class HelidonCopyrightProvider implements CopyrightProvider {
              */
             """;
 
+    /**
+     * Default constructor required by the {@link java.util.ServiceLoader}.
+     */
+    public HelidonCopyrightProvider() {
+    }
+
     @Override
     public String copyright(TypeName generator, TypeName trigger, TypeName generatedType) {
         return COPYRIGHT_TEMPLATE.replace("{{year}}", year());

codegen/pom.xml

@@ -33,6 +33,10 @@
 
     <packaging>pom</packaging>
 
+    <properties>
+        <javadoc.fail-on-warnings>true</javadoc.fail-on-warnings>
+    </properties>
+
     <modules>
         <module>codegen</module>
         <module>class-model</module>
@@ -41,4 +45,19 @@
         <module>scan</module>
         <module>compiler</module>
     </modules>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>check-dependencies</id>
+                        <phase>verify</phase>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
 </project>

common/buffers/pom.xml

@@ -29,10 +29,6 @@
     <name>Helidon Common Buffers</name>
 
     <dependencies>
-        <dependency>
-            <groupId>io.helidon.common</groupId>
-            <artifactId>helidon-common</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>