fix: load annotation class on demand

The switch with String cases allows us to only
use the classes that have already been loaded because
we are parsing an annotation that has already been used.

Refs: #82

Author: akutschera

src/main/java/com/github/nylle/javafixture/specimen/PrimitiveSpecimen.java

@@ -10,8 +10,6 @@
 import com.github.nylle.javafixture.specimen.constraints.StringConstraints;
 
 import java.lang.annotation.Annotation;
-import javax.persistence.Column;
-import javax.validation.constraints.Size;
 
 public class PrimitiveSpecimen<T> implements ISpecimen<T> {
 
@@ -85,14 +83,19 @@ public T create(final CustomizationContext customizationContext, Annotation[] an
     private StringConstraints getStringConstraints(Annotation[] annotations) {
         var constraints = new StringConstraints(0, Integer.MAX_VALUE);
         for (var annotation : annotations) {
-            if(Size.class.isAssignableFrom(annotation.annotationType())) {
-                constraints = new StringConstraints(((Size)annotation).min(), ((Size)annotation).max());
-            } else if(Column.class.isAssignableFrom(annotation.annotationType())) {
-                constraints = new StringConstraints(0, ((Column) annotation).length());
-            } else if (jakarta.validation.constraints.Size.class.isAssignableFrom(annotation.annotationType())) {
-                constraints = new StringConstraints(((jakarta.validation.constraints.Size)annotation).min(), ((jakarta.validation.constraints.Size)annotation).max());
-            } else if (jakarta.persistence.Column.class.isAssignableFrom(annotation.annotationType())) {
-                constraints = new StringConstraints(0, ((jakarta.persistence.Column) annotation).length());
+            switch (annotation.annotationType().getCanonicalName()) {
+                case "jakarta.persistence.Column":
+                    constraints = new StringConstraints(0, ((jakarta.persistence.Column) annotation).length());
+                    break;
+                case "jakarta.validation.constraints.Size":
+                    constraints = new StringConstraints(((jakarta.validation.constraints.Size) annotation).min(), ((jakarta.validation.constraints.Size) annotation).max());
+                    break;
+                case "javax.persistence.Column":
+                    constraints = new StringConstraints(0, ((javax.persistence.Column) annotation).length());
+                    break;
+                case "javax.validation.constraints.Size":
+                    constraints = new StringConstraints(((javax.validation.constraints.Size) annotation).min(), ((javax.validation.constraints.Size) annotation).max());
+                    break;
             }
         }
         return constraints;