migrating notSchema to visitor model

Author: erosb

core/src/main/java/org/everit/json/schema/NotSchema.java

@@ -45,14 +45,8 @@ public Schema getMustNotMatch() {
         return mustNotMatch;
     }
 
-    @Override
-    public void validate(final Object subject) {
-        try {
-            mustNotMatch.validate(subject);
-        } catch (ValidationException e) {
-            return;
-        }
-        throw failure("subject must not be valid against schema " + mustNotMatch, "not");
+    @Override void accept(Visitor visitor) {
+        visitor.visitNotSchema(this);
     }
 
     @Override
@@ -69,10 +63,6 @@ public boolean equals(Object o) {
         }
     }
 
-    @Override void accept(Visitor visitor) {
-        throw new UnsupportedOperationException("not yet implemented");
-    }
-
     @Override
     public int hashCode() {
         return Objects.hash(super.hashCode(), mustNotMatch);

core/src/main/java/org/everit/json/schema/ValidatingVisitor.java

@@ -64,6 +64,14 @@ private static boolean isNull(Object obj) {
         failureReporter.failure("false schema always fails", "false");
     }
 
+    @Override void visitNotSchema(NotSchema notSchema) {
+        Schema mustNotMatch = notSchema.getMustNotMatch();
+        ValidationException failure = getFailureOfSchema(mustNotMatch, subject);
+        if (failure == null) {
+            failureReporter.failure("subject must not be valid against schema " + mustNotMatch, "not");
+        }
+    }
+
     ValidationException getFailureOfSchema(Schema schema, Object input) {
         Object origSubject = this.subject;
         this.subject = input;

core/src/main/java/org/everit/json/schema/Visitor.java

@@ -99,4 +99,7 @@ void visitEnumSchema(EnumSchema enumSchema) {
 
     void visitFalseSchema(FalseSchema falseSchema) {
     }
+
+    void visitNotSchema(NotSchema notSchema) {
+    }
 }