Made downloadUrl available across all public APIs for nodes

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6047 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/template/TemplateContent.java

@@ -24,6 +24,13 @@
  */
 package org.alfresco.repo.template;
 
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.text.MessageFormat;
+
+import org.alfresco.service.cmr.repository.TemplateException;
+import org.springframework.util.StringUtils;
+
 
 /**
  * Contract for Template API objects that support content on the 'cm:content' default property.
@@ -46,6 +53,14 @@ public interface TemplateContent extends TemplateProperties
      */
     public String getUrl();
     
+    /**
+     * @return For a content document, this method returns the download URL to the content for
+     *         the default content property (@see ContentModel.PROP_CONTENT)
+     *         <p>
+     *         For a container node, this method returns an empty string
+     */
+    public String getDownloadUrl();
+    
     /**
      * @return The mimetype encoding for content attached to the node from the default content property
      *         (@see ContentModel.PROP_CONTENT)