Minor optimizations

Author: ehrmann

src/main/java/com/networknt/schema/AllOfValidator.java

@@ -42,11 +42,10 @@ public AllOfValidator(String schemaPath, JsonNode schemaNode, JsonSchema parentS
     public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String at) {
         debug(logger, node, rootNode, at);
 
-        int size = schemas.size();
         Set<ValidationMessage> errors = new LinkedHashSet<ValidationMessage>();
 
-        for (int i = 0; i < size; i++) {
-            errors.addAll(schemas.get(i).validate(node, rootNode, at));
+        for (JsonSchema schema : schemas) {
+            errors.addAll(schema.validate(node, rootNode, at));
         }
 
         return Collections.unmodifiableSet(errors);

src/main/java/com/networknt/schema/AnyOfValidator.java

@@ -42,11 +42,10 @@ public AnyOfValidator(String schemaPath, JsonNode schemaNode, JsonSchema parentS
     public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String at) {
         debug(logger, node, rootNode, at);
 
-        int size = schemas.size();
         Set<ValidationMessage> allErrors = new LinkedHashSet<ValidationMessage>();
 
-        for (int i = 0; i < size; i++) {
-            Set<ValidationMessage> errors = schemas.get(i).validate(node, rootNode, at);
+        for (JsonSchema schema : schemas) {
+            Set<ValidationMessage> errors = schema.validate(node, rootNode, at);
             if (errors.isEmpty()) {
                 return errors;
             }

src/main/java/com/networknt/schema/PropertiesValidator.java

@@ -41,12 +41,12 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
 
         Set<ValidationMessage> errors = new LinkedHashSet<ValidationMessage>();
 
-        for (String key : schemas.keySet()) {
-            JsonSchema propertySchema = schemas.get(key);
-            JsonNode propertyNode = node.get(key);
+        for (Map.Entry<String, JsonSchema> entry : schemas.entrySet()) {
+            JsonSchema propertySchema = entry.getValue();
+            JsonNode propertyNode = node.get(entry.getKey());
 
             if (propertyNode != null) {
-                errors.addAll(propertySchema.validate(propertyNode, rootNode, at + "." + key));
+                errors.addAll(propertySchema.validate(propertyNode, rootNode, at + "." + entry.getKey()));
             }
         }
 

src/main/java/com/networknt/schema/UniqueItemsValidator.java

@@ -44,11 +44,9 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
         if (unique) {
             Set<JsonNode> set = new HashSet<JsonNode>();
             for (JsonNode n : node) {
-                set.add(n);
-            }
-
-            if (set.size() < node.size()) {
-                return Collections.singleton(buildValidationMessage(at));
+                if (!set.add(n)) {
+                    return Collections.singleton(buildValidationMessage(at));
+                }
             }
         }