fixes

winery/webapp/src/main/java/cz/muni/fi/pa165/winery/webapp/models/grape/GrapeUpsertViewModel.java

@@ -7,7 +7,7 @@ import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.modelmapper.ModelMapper;
 
-import javax.validation.constraints.NotNull;
+import javax.validation.constraints.NotBlank;
 
 /**
  * @author Jakub Balga
@@ -29,7 +29,7 @@ public class GrapeUpsertViewModel extends ViewModelBase {
     /**
      * name of grape variety
      */
-    @NotNull(message = "Cannot be empty")
+    @NotBlank(message = "Cannot be empty")
     private String name;
 
     public GrapeDto toDto() {

winery/webapp/src/main/java/cz/muni/fi/pa165/winery/webapp/models/wineBottle/WineBottleUpsertViewModel.java

@@ -9,9 +9,7 @@ import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.modelmapper.ModelMapper;
 
-import javax.validation.constraints.Min;
-import javax.validation.constraints.NotNull;
-import javax.validation.constraints.PositiveOrZero;
+import javax.validation.constraints.*;
 import java.math.BigDecimal;
 import java.util.List;
 
@@ -36,7 +34,8 @@ public class WineBottleUpsertViewModel extends ViewModelBase {
     /**
      * name of wine bottle
      */
-    @NotNull(message = "Cannot be empty")
+    @NotBlank(message = "Cannot be empty")
+    @Pattern(regexp = "^[\\w0-9 ]+$", message = "Please enter only alphanumerical characters and spaces")
     private String name;
 
     /**

winery/webapp/src/main/java/cz/muni/fi/pa165/winery/webapp/models/wineType/WineTypeUpsertViewModel.java

@@ -9,7 +9,9 @@ import lombok.Setter;
 import org.modelmapper.ModelMapper;
 
 import javax.validation.constraints.Min;
+import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Pattern;
 import java.util.List;
 
 /**
@@ -32,7 +34,8 @@ public class WineTypeUpsertViewModel extends ViewModelBase {
     /**
      * name of wine type
      */
-    @NotNull(message = "Cannot be empty")
+    @NotBlank(message = "Cannot be empty")
+    @Pattern(regexp = "^[\\w0-9 ]+$", message = "Please enter only alphanumerical characters and spaces")
     private String name;
 
     /**