BAEL-8507 Merge spring-data-spring-security into another appropriate module

- Removed project spring-data-spring-security and moved its content in spring-security-mvc-boot

spring-security-mvc-boot/src/main/java/com/baeldung/models/Tweet.java

@@ -0,0 +1,63 @@
+package com.baeldung.models;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Tweet {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private long id;
+    private String tweet;
+    private String owner;
+    @ElementCollection(targetClass = String.class, fetch = FetchType.EAGER)
+    private Set<String> likes = new HashSet();
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    private Tweet() {
+    }
+
+    public Tweet(String tweet, String owner) {
+        this.tweet = tweet;
+        this.owner = owner;
+    }
+
+    public String getTweet() {
+        return tweet;
+    }
+
+    public void setTweet(String tweet) {
+        this.tweet = tweet;
+    }
+
+    public String getOwner() {
+        return owner;
+    }
+
+    public void setOwner(String owner) {
+        this.owner = owner;
+    }
+
+    public Set<String> getLikes() {
+        return likes;
+    }
+
+    public void setLikes(Set<String> likes) {
+        this.likes = likes;
+    }
+
+}