add stream transformation support for linked events

CHANGELOG.md

@@ -5,6 +5,9 @@ on [Keep a CHANGELOG](http://keepachangelog.com/). This project adheres to
 
 ## [Unreleased]
 
+### Added
+- Add support for syncing linked events after stream transformation with transformed events
+
 ## [4.0.0-M1] - 2019-03-07
 ### Added
 - Merged in event-buffer-api from event-store as framework-api-event-store

framework-api-event-source/src/main/java/uk/gov/justice/services/eventsourcing/source/core/LinkedEventSourceTransformation.java

@@ -0,0 +1,20 @@
+package uk.gov.justice.services.eventsourcing.source.core;
+
+import uk.gov.justice.services.eventsourcing.source.core.exception.LinkedEventException;
+
+/**
+ * To manage linked event log
+ */
+public interface LinkedEventSourceTransformation {
+
+    /**
+     * Truncates the Linked event log
+     */
+    void truncate() throws LinkedEventException;
+
+    /**
+     * Populates linked event log
+     */
+    void populate() throws LinkedEventException;
+
+}

framework-api-event-source/src/main/java/uk/gov/justice/services/eventsourcing/source/core/exception/LinkedEventException.java

@@ -0,0 +1,12 @@
+package uk.gov.justice.services.eventsourcing.source.core.exception;
+
+public class LinkedEventException extends RuntimeException {
+
+    public LinkedEventException(final String message) {
+        super(message);
+    }
+
+    public LinkedEventException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}