Handling JSONPointer (URI fragment identifier) with no base uri
diff --git a/src/main/java/com/networknt/schema/JsonSchema.java b/src/main/java/com/networknt/schema/JsonSchema.java
index 511869a..472294d 100644
--- a/src/main/java/com/networknt/schema/JsonSchema.java
+++ b/src/main/java/com/networknt/schema/JsonSchema.java
@@ -82,6 +82,8 @@
         final String id = validationContext.resolveSchemaId(schemaNode);
         if (id == null) {
             return currentUri;
+        } else if (isUriFragmentWithNoContext(currentUri, id)) {
+            return null;
         } else {
             try {
                 return this.validationContext.getURIFactory().create(currentUri, id);
@@ -90,6 +92,10 @@
             }
         }
     }
+
+    private boolean isUriFragmentWithNoContext(URI currentUri, String id) {
+        return id.startsWith("#") && currentUri == null;
+    }
     
     public URI getCurrentUri()
     {