SONAR-11916 replace class EmailTemplate by interface

server/sonar-ce-task-projectanalysis/src/main/java/org/sonar/ce/task/projectanalysis/notification/ReportAnalysisFailureNotificationEmailTemplate.java

@@ -28,7 +28,7 @@ import org.sonar.server.issue.notification.EmailTemplate;
 
 import static org.sonar.api.utils.DateUtils.formatDateTime;
 
-public class ReportAnalysisFailureNotificationEmailTemplate extends EmailTemplate {
+public class ReportAnalysisFailureNotificationEmailTemplate implements EmailTemplate {
   private static final char LINE_RETURN = '\n';
   private static final char TAB = '\t';
 

server/sonar-server-common/src/main/java/org/sonar/server/issue/notification/AbstractNewIssuesEmailTemplate.java

@@ -38,7 +38,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
 /**
  * Base class to create emails for new issues
  */
-public abstract class AbstractNewIssuesEmailTemplate extends EmailTemplate {
+public abstract class AbstractNewIssuesEmailTemplate implements EmailTemplate {
 
   protected static final char NEW_LINE = '\n';
   protected static final String TAB = "    ";

server/sonar-server-common/src/main/java/org/sonar/server/issue/notification/EmailTemplate.java

@@ -25,8 +25,8 @@ import org.sonar.api.notifications.Notification;
 
 @ServerSide
 @ExtensionPoint
-public abstract class EmailTemplate {
+public interface EmailTemplate {
 
-  public abstract EmailMessage format(Notification notification);
+  EmailMessage format(Notification notification);
 
 }

server/sonar-server-common/src/main/java/org/sonar/server/issue/notification/IssueChangesEmailTemplate.java

@@ -37,7 +37,7 @@ import static org.sonar.server.issue.notification.AbstractNewIssuesEmailTemplate
 /**
  * Creates email message for notification "issue-changes".
  */
-public class IssueChangesEmailTemplate extends EmailTemplate {
+public class IssueChangesEmailTemplate implements EmailTemplate {
 
   private static final char NEW_LINE = '\n';
   private final DbClient dbClient;

server/sonar-server-common/src/main/java/org/sonar/server/qualitygate/notification/QGChangeEmailTemplate.java

@@ -32,7 +32,7 @@ import org.sonar.server.issue.notification.EmailTemplate;
  *
  * @since 3.5
  */
-public class QGChangeEmailTemplate extends EmailTemplate {
+public class QGChangeEmailTemplate implements EmailTemplate {
 
   private EmailSettings configuration;
 

server/sonar-server/src/main/java/org/sonar/server/qualityprofile/BuiltInQPChangeNotificationTemplate.java

@@ -33,7 +33,7 @@ import static org.sonar.api.utils.DateUtils.formatDate;
 import static org.sonar.server.qualityprofile.BuiltInQPChangeNotificationBuilder.Profile;
 import static org.sonar.server.qualityprofile.BuiltInQPChangeNotificationBuilder.parse;
 
-public class BuiltInQPChangeNotificationTemplate extends EmailTemplate {
+public class BuiltInQPChangeNotificationTemplate implements EmailTemplate {
 
   private final Server server;