Исправлено сохранение данных

src/main/java/ru/serega6531/packmate/model/FoundPattern.java

@@ -28,7 +28,7 @@ public class FoundPattern {
     @GeneratedValue(generator = "found_pattern_generator")
     private Long id;
 
-    @ManyToOne
+    @ManyToOne(optional = false)
     @JoinColumn(name = "packet_id", nullable = false)
     @Setter
     private Packet packet;

src/main/java/ru/serega6531/packmate/model/Packet.java

@@ -1,6 +1,5 @@
 package ru.serega6531.packmate.model;
 
-import com.fasterxml.jackson.annotation.JsonIgnore;
 import lombok.*;
 import org.hibernate.Hibernate;
 import org.hibernate.annotations.GenericGenerator;
@@ -37,11 +36,11 @@ public class Packet {
     @Transient
     private int ttl;
 
-    @Column(name = "stream_id")
-    @JsonIgnore
-    private Long streamId;
+    @ManyToOne(optional = false)
+    @JoinColumn(name = "stream_id", nullable = false)
+    private Stream stream;
 
-    @OneToMany(mappedBy = "packet", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
+    @OneToMany(mappedBy = "packet", cascade = CascadeType.ALL, orphanRemoval = true)
     private Set<FoundPattern> matches;
 
     private long timestamp;

src/main/java/ru/serega6531/packmate/model/Stream.java

@@ -6,10 +6,7 @@ import org.hibernate.annotations.GenericGenerator;
 import ru.serega6531.packmate.model.enums.Protocol;
 
 import javax.persistence.*;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Objects;
-import java.util.Set;
+import java.util.*;
 
 @Getter
 @Setter
@@ -36,8 +33,7 @@ public class Stream {
 
     private Protocol protocol;
 
-    @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true)
-    @JoinColumn(name = "stream_id")
+    @OneToMany(mappedBy = "stream", cascade = CascadeType.ALL, orphanRemoval = true)
     @OrderBy("id")
     @ToString.Exclude
     private List<Packet> packets;