[OLINGO-1155]Discrepency in Next Link shown in delta request and normal request
diff --git a/lib/commons-api/src/main/java/org/apache/olingo/commons/api/Constants.java b/lib/commons-api/src/main/java/org/apache/olingo/commons/api/Constants.java
index 9f29f63..0828abc 100644
--- a/lib/commons-api/src/main/java/org/apache/olingo/commons/api/Constants.java
+++ b/lib/commons-api/src/main/java/org/apache/olingo/commons/api/Constants.java
@@ -334,4 +334,5 @@
   String ENTITY = "/$entity";
   String REASON = "Reason";
   String ID = "@id";
+  String NEXTLINK = "@nextLink";
 }
diff --git a/lib/server-core/src/main/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigations.java b/lib/server-core/src/main/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigations.java
index 52bb217..eff602b 100644
--- a/lib/server-core/src/main/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigations.java
+++ b/lib/server-core/src/main/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigations.java
@@ -687,7 +687,7 @@
   boolean writeNextLink(final AbstractEntityCollection entitySet, final JsonGenerator json)

       throws IOException {

     if (entitySet.getNext() != null) {

-      json.writeStringField(Constants.JSON_NEXT_LINK, entitySet.getNext().toASCIIString());

+      json.writeStringField(Constants.NEXTLINK, entitySet.getNext().toASCIIString());

       return true;

     } else {

       return false;

diff --git a/lib/server-test/src/test/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigationsTest.java b/lib/server-test/src/test/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigationsTest.java
index 5a7c26f..5cffa02 100644
--- a/lib/server-test/src/test/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigationsTest.java
+++ b/lib/server-test/src/test/java/org/apache/olingo/server/core/serializer/json/JsonDeltaSerializerWithNavigationsTest.java
@@ -323,7 +323,7 @@
            + "\"@context\":\"#ESDelta/$link\",\"source\":\"ESDelta(100)\","
            + "\"relationship\":\"NavPropertyETAllPrimOne\","
            + "\"target\":\"ESAllPrim(0)\"}],"          
-           + "\"@odata.nextLink\":\"23042017\""
+           + "\"@nextLink\":\"23042017\""
            + "}";
        Assert.assertNotNull(jsonString);
        Assert.assertEquals(expectedResult, jsonString);
@@ -352,7 +352,7 @@
            + "\"@context\":\"#ESDelta/$link\",\"source\":\"ESDelta(100)\","
            + "\"relationship\":\"NavPropertyETAllPrimOne\","
            + "\"target\":\"ESAllPrim(0)\"}],"          
-           + "\"@odata.nextLink\":\"23042017\""
+           + "\"@nextLink\":\"23042017\""
            + "}";
        Assert.assertNotNull(jsonString);
        Assert.assertEquals(expectedResult, jsonString);