Make archetype-builder generate tokens for special versions we want t…

…o be able to configure from archetype. Part of fabric8io/ipaas-quickstarts#989

tooling/archetype-builder/src/main/java/io/fabric8/tooling/archetype/ArchetypeUtils.java

@@ -21,6 +21,7 @@
 import java.io.FileOutputStream;
 import java.io.FileReader;
 import java.io.IOException;
+import java.io.StringWriter;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.LinkedList;
@@ -191,10 +192,6 @@ public Document parseXml(InputSource inputSource) {
 
     /**
      * Serializes the Document to a File.
-     *
-     * @param document
-     * @param file
-     * @throws IOException
      */
     public void writeXmlDocument(Document document, File file) throws IOException {
         try {
@@ -209,6 +206,24 @@ public void writeXmlDocument(Document document, File file) throws IOException {
         }
     }
 
+    /**
+     * Serializes the Document to a String.
+     */
+    public String writeXmlDocumentAsString(Document document) throws IOException {
+        try {
+            Transformer tr = transformerFactory.newTransformer();
+            tr.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
+            tr.setOutputProperty(OutputKeys.INDENT, "yes");
+            StringWriter writer = new StringWriter();
+            StreamResult result = new StreamResult(writer);
+            TransformerFactory tf = TransformerFactory.newInstance();
+            tr.transform(new DOMSource(document), result);
+            return writer.toString();
+        } catch (Exception e) {
+            throw new IOException(e.getMessage(), e);
+        }
+    }
+
     public String firstElementText(Element root, String elementName, String defaultValue) {
         // prefer direct children first
         String answer = null;

tooling/archetype-builder/src/main/java/io/fabric8/tooling/archetype/builder/ArchetypeBuilder.java

@@ -428,7 +428,6 @@ private void createArchetypeDescriptors(File projectPom, File archetypeDir, File
             for (int cn = 0; cn < children.getLength(); cn++) {
                 Node e = children.item(cn);
                 if (e instanceof Element) {
-                    //val text = e.childrenText
                     String cText = e.getTextContent();
                     String prefix = "${";
                     if (cText.startsWith(prefix)) {
@@ -442,6 +441,8 @@ private void createArchetypeDescriptors(File projectPom, File archetypeDir, File
                                 if (value == null) {
                                     value = versionProperties.get(name);
                                 }
+                                // lets use dash instead of dot
+                                name = name.replace('.', '-');
                                 propertyNameSet.put(name, value);
                             }
                         }
@@ -452,7 +453,12 @@ private void createArchetypeDescriptors(File projectPom, File archetypeDir, File
                             String value = e.getTextContent();
                             if (value != null) {
                                 value = value.trim();
+                                // lets use dash instead of dot
+                                cName = cName.replace('.', '-');
                                 propertyNameSet.put(cName, value);
+                                // and use a placeholder token in its place, so we can allow to specify the version dynamically in the archetype
+                                String token = "${" + cName + "}";
+                                e.setTextContent(token);
                             }
                         }
                     }