4 files changed, 68 insertions, 1 deletions
diff --git a/model/src/main/java/de/danoeh/antennapod/model/feed/Chapter.java b/model/src/main/java/de/danoeh/antennapod/model/feed/Chapter.java
index 3683a2a44..f6a5205d2 100644
--- a/model/src/main/java/de/danoeh/antennapod/model/feed/Chapter.java
+++ b/model/src/main/java/de/danoeh/antennapod/model/feed/Chapter.java
@@ -1,6 +1,7 @@
 package de.danoeh.antennapod.model.feed;
 
 import java.util.List;
+import java.util.Objects;
 
 public class Chapter {
     private long id;
@@ -88,4 +89,22 @@ public class Chapter {
         }
         return chapters.size() - 1;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        Chapter chapter = (Chapter) o;
+        return id == chapter.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }
diff --git a/model/src/main/java/de/danoeh/antennapod/model/feed/Feed.java b/model/src/main/java/de/danoeh/antennapod/model/feed/Feed.java
index 15d256c24..99e7ca9dc 100644
--- a/model/src/main/java/de/danoeh/antennapod/model/feed/Feed.java
+++ b/model/src/main/java/de/danoeh/antennapod/model/feed/Feed.java
@@ -5,6 +5,8 @@ import androidx.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
+import java.util.Objects;
+
 import org.apache.commons.lang3.StringUtils;
 
 /**
@@ -468,4 +470,22 @@ public class Feed {
     public boolean isLocalFeed() {
         return downloadUrl.startsWith(PREFIX_LOCAL_FOLDER);
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        Feed feed = (Feed) o;
+        return id == feed.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }
diff --git a/model/src/main/java/de/danoeh/antennapod/model/feed/FeedItem.java b/model/src/main/java/de/danoeh/antennapod/model/feed/FeedItem.java
index df4cc8f9c..2a62e3e34 100644
--- a/model/src/main/java/de/danoeh/antennapod/model/feed/FeedItem.java
+++ b/model/src/main/java/de/danoeh/antennapod/model/feed/FeedItem.java
@@ -11,6 +11,7 @@ import java.io.Serializable;
 import java.util.Date;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Objects;
 import java.util.Set;
 
 /**
@@ -418,4 +419,22 @@ public class FeedItem implements Serializable {
     public String toString() {
         return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        FeedItem feedItem = (FeedItem) o;
+        return id == feedItem.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }
diff --git a/model/src/main/java/de/danoeh/antennapod/model/feed/FeedMedia.java b/model/src/main/java/de/danoeh/antennapod/model/feed/FeedMedia.java
index 698cdf34e..1f0786875 100644
--- a/model/src/main/java/de/danoeh/antennapod/model/feed/FeedMedia.java
+++ b/model/src/main/java/de/danoeh/antennapod/model/feed/FeedMedia.java
@@ -501,12 +501,21 @@ public class FeedMedia implements Playable {
 
     @Override
     public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
         if (o == null) {
             return false;
         }
         if (o instanceof RemoteMedia) {
             return o.equals(this);
         }
-        return super.equals(o);
+
+        if (getClass() != o.getClass()) {
+            return false;
+        }
+
+        FeedMedia feedMedia = (FeedMedia) o;
+        return id == feedMedia.id;
     }
 }