Fixed null check

Author: JanHolger

src/main/java/org/javawebstack/validator/rule/AlphaDashRule.java

@@ -11,7 +11,7 @@
 public class AlphaDashRule implements ValidationRule {
     @Override
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
 
         String pattern = "[A-Za-z0-9-_]*";

src/main/java/org/javawebstack/validator/rule/AlphaNumRule.java

@@ -11,7 +11,7 @@
 public class AlphaNumRule implements ValidationRule {
     @Override
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
 
         String pattern = "[A-Za-z0-9]*";

src/main/java/org/javawebstack/validator/rule/AlphaRule.java

@@ -11,7 +11,7 @@
 public class AlphaRule implements ValidationRule {
     @Override
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
 
         String pattern = "[A-Za-z]*";

src/main/java/org/javawebstack/validator/rule/ArrayRule.java

@@ -30,7 +30,7 @@ public ArrayRule(String[] params) {
     }
 
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
         if (!value.isArray())
             return "Not an array";

src/main/java/org/javawebstack/validator/rule/BooleanRule.java

@@ -10,7 +10,7 @@
  */
 public class BooleanRule implements ValidationRule {
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
         if (value.isBoolean())
             return null;

src/main/java/org/javawebstack/validator/rule/EmailRule.java

@@ -13,7 +13,7 @@
 public class EmailRule implements ValidationRule {
     @Override
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
 
         try {

src/main/java/org/javawebstack/validator/rule/EnumRule.java

@@ -27,7 +27,7 @@ public EnumRule(Class<? extends Enum<?>> enumType) {
     }
 
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
         return value.isString() && values.contains(value.string()) ? null : String.format("Not an element of [%s]", String.join(",", values));
     }

src/main/java/org/javawebstack/validator/rule/IntegerRule.java

@@ -40,7 +40,7 @@ public IntegerRule(String[] params) {
     }
 
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
         int v;
         if (value.isNumber()) {

src/main/java/org/javawebstack/validator/rule/NumericRule.java

@@ -11,7 +11,7 @@
 public class NumericRule implements ValidationRule {
     @Override
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
 
         float v;

src/main/java/org/javawebstack/validator/rule/RegexRule.java

@@ -19,7 +19,7 @@ public RegexRule(String regex) {
     }
 
     public String validate(ValidationContext context, Field field, AbstractElement value) {
-        if (value == null)
+        if (value == null || value.isNull())
             return null;
         return value.isString() && pattern.matcher(value.string()).matches() ? null : "Doesn't match the expected pattern";
     }