+ private static final String JSON_ATTR_VERSION = "_version";
+ private static final String JSON_ATTR_ERROR = "error";
+ private static final String JSON_ATTR_REASON = "reason";
+
+ private static final String DEFAULT_TYPE = "default";
+ private static final String QUERY_PARAM_VERSION = "?version=";
+
+ private static final String MSG_RESOURCE_MISSING = "Specified resource does not exist: ";
+ private static final String MSG_RESPONSE_CODE = "Response Code : ";
+ private static final String MSG_INVALID_DOCUMENT_URL = "Invalid document URL: ";
+ private static final String MSG_HTTP_PUT_FAILED = "Failed to set HTTP request method to PUT.";
+ private static final String MSG_HTTP_POST_FAILED = "Failed to set HTTP request method to POST.";
+ private static final String FAILED_TO_GET_THE_RESPONSE_CODE_FROM_THE_CONNECTION =
+ "Failed to get the response code from the connection.";
+ private static final String FAILED_TO_PARSE_ELASTIC_SEARCH_RESPONSE = "Failed to parse Elastic Search response.";
+