Added equals and hashcode methods in BaseEntity

Author: CollinAlpert

README.md

@@ -59,7 +59,7 @@ public class Gender extends BaseEntity {
 ```java
 @TableName("person")
 public class Person extends BaseEntity {
-	//BaseEntity gives us the id field.
+	// BaseEntity gives us the id field.
 	// We need to add the rest.
 
 	private String name;
@@ -80,6 +80,7 @@ public class Person extends BaseEntity {
 ```
 
 Every POJO *must* extend `BaseEntity` and have an empty or default constructor.\
+The class `BaseEntity` overrides the `equals` and `hashCode` methods using the `id`. Override them in your entity classes if you need different behavior.\
 If you want to have a field in your POJO that should be ignored by Java2DB, you can apply the `Ignore` attribute to the specific field.
 
 Then we can go ahead and create the service classes:

src/main/java/com/github/collinalpert/java2db/entities/BaseEntity.java

@@ -20,12 +20,33 @@ public long getId() {
 	 *
 	 * @param id The id of the entity.
 	 */
+	@Deprecated
 	public void setId(long id) {
 		this.id = id;
 	}
 
 	@Override
 	public String toString() {
-		return "Id: " + id;
+		return "Id: " + this.id;
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) {
+			return true;
+		}
+
+		if (!(o instanceof BaseEntity)) {
+			return false;
+		}
+
+		BaseEntity that = (BaseEntity) o;
+
+		return this.id == that.id;
+	}
+
+	@Override
+	public int hashCode() {
+		return (int) (this.id ^ (this.id >>> 32));
 	}
 }