[MT-1462] - deletePersistentData added to DataManager (#13)

 - adds deletePersistentData added to DataManager
 - bumps version up to 1.3.2

Author: jameskeith

README.md

@@ -27,6 +27,9 @@ AudienceStream™ allows you to create a unified view of your customers, correla
 * If you have **account specific questions** please contact your Tealium account manager
 
 ## Change Log
+
+- 1.3.2 Persistent Data Deletion
+    - `deletePersistentData` method added to the `DataManager` class  
 - 1.3.1 Persistent Data 
     - Updated track method to use a copy of Persistent Data to stop event data unexpectedly being stored. 
 - 1.3.0 Remove visitor_id and switch to event endpoint
@@ -74,4 +77,4 @@ Use of this software is subject to the terms and conditions of the license agree
 
 
 ---
-Copyright (C) 2012-2021, Tealium Inc.
+Copyright (C) 2012-2024, Tealium Inc.

pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.tealium</groupId>
     <artifactId>java</artifactId>
-    <version>1.3.1</version>
+    <version>1.3.2</version>
     <name>TealiumJava</name>
 
     <packaging>jar</packaging>

src/main/java/com/tealium/DataManager.java

@@ -1,6 +1,7 @@
 package com.tealium;
 
 import java.security.SecureRandom;
+import java.util.List;
 import java.util.Random;
 
 /**
@@ -74,6 +75,19 @@ public void addPersistentData(Udo data) throws UdoSerializationException {
         this.persistentData.writeData(persistent);
     }
 
+    /**
+     * Convenience to remove specific keys from the persistent data map
+     *
+     * @param keys The list of keys to be removed.
+     */
+    public void deletePersistentData(List<String> keys) throws UdoSerializationException {
+        Udo persistent = getPersistentData();
+        for (String key : keys) {
+            persistent.remove(key);
+        }
+        this.persistentData.writeData(persistent);
+    }
+
     /**
      * Convenience to reset session ID
      * 

src/main/java/com/tealium/LibraryContext.java

@@ -10,7 +10,7 @@
  * @author Jason Koo, Chad Hartman, Karen Tamayo, Merritt Tidwell, Chris Anderberg
  */
 class LibraryContext {
-    public static final String version = "1.3.1";
+    public static final String version = "1.3.2";
 
     private final String account;
     private final String profile;

src/test/java/com/tealium/DataManagerTests.java

@@ -15,7 +15,6 @@
  * Jason Koo, Chad Hartman, Karen Tamayo, Merritt Tidwell, Chris Anderberg
  */
 public class DataManagerTests {
-
     @Test
     public void testInit() throws Exception {
         TestLibraryContext testCtx = TestLibraryContext.newInstance();
@@ -49,6 +48,23 @@ public void testGetPersistentData() throws Exception {
 
         LibraryContext ctx = TestLibraryContext.newInstance();
 
+        Udo map = new Udo();
+        String key = "testKey";
+        String value = "testValue";
+        map.put(key, value);
+
+        DataManager data = new DataManager(ctx, TestUtils.dummyPersistentUdo(map));
+        Udo savedData = data.getPersistentData();
+
+        assertTrue(savedData.containsKey(key));
+        assertTrue(savedData.containsValue(value));
+    }
+
+    @Test
+    public void testAddPersistentDataAddsDataToPersistentUdo() throws Exception {
+
+        LibraryContext ctx = TestLibraryContext.newInstance();
+
         DataManager data = new DataManager(ctx, TestUtils.dummyPersistentUdo());
         Udo map = new Udo();
 
@@ -60,17 +76,30 @@ public void testGetPersistentData() throws Exception {
         // Write to disk first
         data.addPersistentData(map);
 
-        Class<? extends DataManager> myclass = data.getClass();
-        Method method = myclass.getDeclaredMethod("getPersistentData");
-        method.setAccessible(true);
-
-        @SuppressWarnings("unchecked")
-        Udo savedData = (Udo) method.invoke(data);
+        Udo savedData = data.getPersistentData();
 
         assertTrue(savedData.containsKey(key));
         assertTrue(savedData.containsValue(value));
     }
 
+    @Test
+    public void testDeletePersistentDataRemovesDataFromPersistentUdo() throws Exception {
+
+        LibraryContext ctx = TestLibraryContext.newInstance();
+
+        Udo map = new Udo();
+        String key = "testKey";
+        String value = "testValue";
+        map.put(key, value);
+
+        DataManager data = new DataManager(ctx, TestUtils.dummyPersistentUdo(map));
+        data.deletePersistentData(Collections.singletonList("testKey"));
+        Udo savedData = data.getPersistentData();
+
+        assertFalse(savedData.containsKey(key));
+        assertFalse(savedData.containsValue(value));
+    }
+
     /*
      * Test that new data doesn't contain visitor id or vid
      * Test that new data contains expected variables

src/test/java/com/tealium/TestUtils.java

@@ -71,8 +71,12 @@ public Boolean exists() {
     }
 
     public static PersistentUdo dummyPersistentUdo() {
+        return dummyPersistentUdo(null);
+    }
+
+    public static PersistentUdo dummyPersistentUdo(final Udo initialUdo) {
         return new PersistentUdo(null) {
-            private Udo udo;
+            private Udo udo = initialUdo;
 
             @Override
             public Udo readOrCreateUdo(Udo defaultData) {