private void BuildResults(SqlDataReader dr, int subqueryIndex = 0)
{
// paging
switch (_pagingDirection)
{
case DatabaseQueryPagingDirection.Top:
_currentPage = 1;
break;
case DatabaseQueryPagingDirection.Next:
_currentPage++;
break;
case DatabaseQueryPagingDirection.Previous:
_currentPage--;
if (_currentPage < 1)
{
_currentPage = 1;
}
break;
}
int startread = (_currentPage * _pagingLimit) - _pagingLimit;
int endread = startread + _pagingLimit;
//build result node
MemoryStream stream = new MemoryStream();
XmlTextWriter w = new XmlTextWriter(stream, Encoding.UTF8);
XmlNodeList fieldNodes;
// begin writing the xml result
w.WriteStartElement("result");
try
{
//field values for results
if (subqueryIndex > 0)
{
fieldNodes = _querynode.SelectNodes(String.Format(@"subquery[{0}]/fields/field", subqueryIndex));
}
else
{
fieldNodes = _querynode.SelectNodes(@"fields/field");
}
//add rows to result node
int currentrow = 0;
_resultPages = getNewResultPages(_querynode);
int pagecount = 1;
int inpagecount = 0;
while (dr.Read())
{
bool flginpage = false;
if ((currentrow >= (startread) && currentrow < endread) || _pagingLimit == -1)
{
flginpage = true;
}
#region in page write results
if (flginpage)
{
w.WriteStartElement("row");
// if we come accross Json fields, they are translated to Xml and added as child to row node
// keep track of them and add them after all attributes have been processed
List <string> innerXml = new List <string>();
//attributes (fields)
if (fieldNodes.Count > 0)
{
foreach (XmlElement m in fieldNodes)
{
try
{
// validate json type
if (m.GetAttribute("type") == "json" || m.GetAttribute("type") == "tryjson")
{
try
{
var val = dr[m.GetAttribute("name")].ToString();
string json = null;
if (string.IsNullOrEmpty(val))
{
json = "{}";
}
else
{
var jsoObj = Newtonsoft.Json.Linq.JObject.Parse(val);
json = val;
}
w.WriteAttributeString(m.GetAttribute("name").ToString(), json);
}
catch (IndexOutOfRangeException handled)
{
throw handled;
}
catch (Exception unhandled)
{
w.WriteAttributeString(m.GetAttribute("name").ToString(), "{\"error\":\"" + unhandled.Message + "\"}");
}
}
else
{
string val = dr[m.GetAttribute("name")].ToString();
if (!(m.HasAttribute("encode") || m.HasAttribute("regx")))
{
val = dr[m.GetAttribute("name")].ToString().Trim();
}
if (m.HasAttribute("encode"))
{
val = System.Web.HttpUtility.UrlEncode(dr[m.GetAttribute("encode")].ToString().TrimEnd()).Replace("+", "%20");;
}
if (m.HasAttribute("regx") && m.HasAttribute("replace") && m.HasAttribute("field"))
{
val = dr[m.GetAttribute("field")].ToString().Trim();
val = Regex.Replace(val, m.GetAttribute("regex").ToString(), m.GetAttribute("replace").ToString());
}
w.WriteAttributeString(m.GetAttribute("name").ToString(), String.IsNullOrEmpty(val) ? "" : safeXmlCharacters(val.ToString().Trim()));
}
if (m.GetAttribute("type") == "json")
{
string xml = null;
try
{
var details = dr[m.GetAttribute("name")].ToString();
// try to parse it
string jsonDetails = String.Format("{{\"{0}\":{1}}}", m.GetAttribute("name"), details);
xml = JsonConvert.DeserializeXmlNode(jsonDetails).OuterXml;
if (xml.StartsWith("<?"))
{
xml = xml.Substring(xml.IndexOf("?>") + 2);
}
}
catch (JsonReaderException) { }
catch (JsonSerializationException) { }
finally
{
if (xml != null)
{
innerXml.Add(xml);
}
}
}
}
catch (IndexOutOfRangeException handled)
{
w.WriteAttributeString(m.GetAttribute("name").ToString(), "#field not found#");
}
}
}
else
{
for (int i = 0; i < dr.FieldCount; i++)
{
w.WriteAttributeString(dr.GetName(i), dr[i].ToString().Trim());
}
}
// add inner xml
foreach (String s in innerXml)
{
w.WriteRaw(s);
}
w.WriteEndElement();
}
#endregion
_rowsaffected = currentrow++;
inpagecount++;
if (inpagecount >= _pagingLimit)
{
_resultPages.Add(new ResultPaging(pagecount++, inpagecount));
inpagecount = 0;
}
}
// get last result for _resultPage
if (inpagecount > 0)
{
_resultPages.Add(new ResultPaging(pagecount++, inpagecount));
}
_results = true;
// reset a couple of paging items
_currentPage = 1;
_pagingDirection = DatabaseQueryPagingDirection.None;
}
catch (IndexOutOfRangeException ie)
{
string errmsg = string.Format("One or more invalid Field or Parameters for QueryName: {0}", _querynode.Attributes["name"].InnerText);
ProjectExceptionArgs args = new ProjectExceptionArgs(errmsg, "Database.cs", "BuildResults", null, SeverityLevel.Fatal, LogLevel.Event);
throw new ProjectException(args, ie);
}
catch (SqlException se)
{
string errmsg = string.Format("ExecuteReader Error For QueryName: {0}", _querynode.Attributes["name"].InnerText);
ProjectExceptionArgs args = new ProjectExceptionArgs(errmsg, "Database.cs", "BuildResults", null, SeverityLevel.Fatal, LogLevel.Event);
throw new ProjectException(args, se);
}
//end result node
w.WriteEndElement();
w.Flush();
// include sub results (StoredProcedure returns more than one Result Set)
while (dr.NextResult())
{
subqueryIndex++;
BuildResults(dr, subqueryIndex);
}
//add stream xml to return xml
XmlDocument xmStreamObj = new XmlDocument();
stream.Seek(0, SeekOrigin.Begin);
xmStreamObj.Load(stream);
pushToTree(xmStreamObj, subqueryIndex);
}
private void BuildResults(SqlDataReader dr, int subqueryIndex = 0)
{
// paging
switch (_pagingDirection)
{
case DatabaseQueryPagingDirection.Top:
_currentPage = 1;
break;
case DatabaseQueryPagingDirection.Next:
_currentPage++;
break;
case DatabaseQueryPagingDirection.Previous:
_currentPage--;
if (_currentPage < 1)
_currentPage = 1;
break;
}
int startread = (_currentPage * _pagingLimit) - _pagingLimit;
int endread = startread + _pagingLimit;
//build result node
MemoryStream stream = new MemoryStream();
XmlTextWriter w = new XmlTextWriter(stream, Encoding.UTF8);
XmlNodeList fieldNodes;
// begin writing the xml result
w.WriteStartElement("result");
try
{
//field values for results
if(subqueryIndex > 0)
fieldNodes = _querynode.SelectNodes(String.Format(@"subquery[{0}]/fields/field", subqueryIndex));
else
fieldNodes = _querynode.SelectNodes(@"fields/field");
//add rows to result node
long currentrow = 0;
_resultPages = getNewResultPages(_querynode);
int pagecount = 1;
int inpagecount = 0;
while (dr.Read())
{
bool flginpage = false;
if ((currentrow >= (startread) && currentrow < endread) || _pagingLimit == -1)
flginpage = true;
#region in page write results
if (flginpage)
{
w.WriteStartElement("row");
// if we come accross Json fields, they are translated to Xml and added as child to row node
// keep track of them and add them after all attributes have been processed
List<string> innerXml = new List<string>();
//attributes (fields)
if (fieldNodes.Count > 0)
{
foreach (XmlElement m in fieldNodes)
{
try
{
// validate json type
if (m.GetAttribute("type") == "json")
{
try
{
var val = dr[m.GetAttribute("name")].ToString();
string json = null;
if (string.IsNullOrEmpty(val))
{
json = "{}";
}
else
{
var jsoObj = Newtonsoft.Json.Linq.JObject.Parse(val);
json = val;
}
w.WriteAttributeString(m.GetAttribute("name").ToString(), json);
}
catch (IndexOutOfRangeException handled)
{
throw handled;
}
catch (Exception unhandled)
{
w.WriteAttributeString(m.GetAttribute("name").ToString(), "{\"error\":\"" + unhandled.Message + "\"}");
}
}
else
{
string val = null;
if(!(m.HasAttribute("encode") || m.HasAttribute("regx")))
val = dr[m.GetAttribute("name")].ToString().Trim();
if (m.HasAttribute("encode"))
{
val = System.Web.HttpUtility.UrlEncode(dr[m.GetAttribute("encode")].ToString().TrimEnd()).Replace("+", "%20"); ;
}
if (m.HasAttribute("regx") && m.HasAttribute("replace") && m.HasAttribute("field"))
{
val = dr[m.GetAttribute("field")].ToString().Trim();
val = Regex.Replace(val, m.GetAttribute("regex").ToString(), m.GetAttribute("replace").ToString());
}
w.WriteAttributeString(m.GetAttribute("name").ToString(), String.IsNullOrEmpty(val) ? "" : val.ToString().Trim());
}
if (m.GetAttribute("type") == "json")
{
string xml = null;
try
{
var details = dr[m.GetAttribute("name")].ToString();
// try to parse it
string jsonDetails = String.Format("{{\"{0}\":{1}}}", m.GetAttribute("name"), details);
xml = JsonConvert.DeserializeXmlNode(jsonDetails).OuterXml;
if (xml.StartsWith("<?"))
xml = xml.Substring(xml.IndexOf("?>") + 2);
}
catch (JsonReaderException) { }
catch (JsonSerializationException) { }
finally
{
if(xml != null)
innerXml.Add(xml);
}
}
}
catch (IndexOutOfRangeException handled)
{
w.WriteAttributeString(m.GetAttribute("name").ToString(), "#field not found#");
}
}
}
else
{
for (int i = 0; i < dr.FieldCount; i++)
{
w.WriteAttributeString(dr.GetName(i), dr[i].ToString().Trim());
}
}
// add inner xml
foreach (String s in innerXml)
w.WriteRaw(s);
w.WriteEndElement();
}
#endregion
_rowsaffected = (Int32)currentrow++;
inpagecount++;
if (inpagecount >= _pagingLimit)
{
_resultPages.Add(new ResultPaging(pagecount++, inpagecount));
inpagecount = 0;
}
}
// get last result for _resultPage
if (inpagecount > 0)
_resultPages.Add(new ResultPaging(pagecount++, inpagecount));
_results = true;
// reset a couple of paging items
_currentPage = 1;
_pagingDirection = DatabaseQueryPagingDirection.None;
}
catch (IndexOutOfRangeException ie)
{
string errmsg = string.Format("One or more invalid Field or Parameters for QueryName: {0}", _querynode.Attributes["name"].InnerText);
ProjectExceptionArgs args = new ProjectExceptionArgs(errmsg, "Database.cs", "BuildResults", null, SeverityLevel.Fatal, LogLevel.Event);
throw new ProjectException(args, ie);
}
catch (SqlException se)
{
string errmsg = string.Format("ExecuteReader Error For QueryName: {0}", _querynode.Attributes["name"].InnerText);
ProjectExceptionArgs args = new ProjectExceptionArgs(errmsg, "Database.cs", "BuildResults", null, SeverityLevel.Fatal, LogLevel.Event);
throw new ProjectException(args, se);
}
//end result node
w.WriteEndElement();
w.Flush();
// include sub results (StoredProcedure returns more than one Result Set)
while (dr.NextResult())
{
subqueryIndex++;
BuildResults(dr, subqueryIndex);
}
//add stream xml to return xml
XmlDocument xmStreamObj = new XmlDocument();
stream.Seek(0, SeekOrigin.Begin);
xmStreamObj.Load(stream);
//import result xml to original xml obj
XmlNode import = _xmresult.ImportNode(xmStreamObj.DocumentElement, true);
XmlNode elm;
if (subqueryIndex > 0 && _xmresult.SelectSingleNode("results/subquery") == null)
elm = _xmresult.SelectSingleNode("results").AppendChild(_xmresult.CreateElement("subquery"));
else
elm = _xmresult.SelectSingleNode("results");
elm.AppendChild(import);
}