public void ProcessRequest(HttpContext context)
{
App app = CodeTorch.Core.Configuration.GetInstance().App;
StringBuilder builder = new StringBuilder();
StringWriter writer = new StringWriter(builder);
try
{
if (Me == null)
{
if (context.Request.Path.ToLower().EndsWith("xml"))
{
Format = "xml";
}
throw new ApplicationException("No service has been configured for this path");
}
DataCommand command = null;
RestServiceMethodReturnTypeEnum returnType = RestServiceMethodReturnTypeEnum.None;
//collect parameters
DataTable dt = null;
XmlDocument doc = null;
context.Response.TrySkipIisCustomErrors = true;
if (Format.ToLower() == "json")
{
context.Response.ContentType = "application/json";
}
else
{
context.Response.ContentType = "text/xml";
}
BaseRestServiceMethod method = Me.Methods.Where(i => (i.Action.ToString() == HttpContext.Current.Request.HttpMethod)).SingleOrDefault();
if (method != null)
{
//pass parameters - minus dbcommand parameters to datacommand
DataCommandService dataCommandDB = DataCommandService.GetInstance();
if (String.IsNullOrEmpty(method.RequestDataCommand))
{
throw new ApplicationException(String.Format("Request Data Command has not been configured for this service - {0}", Me.Name));
}
command = DataCommand.GetDataCommand(method.RequestDataCommand);
if (command == null)
{
throw new ApplicationException(String.Format("Request Data Command - {0} - could not be found in configuration", method.RequestDataCommand));
}
List <ScreenDataCommandParameter> parameters = GetPopulatedCommandParameters(method.RequestDataCommand, method.DataCommands, null);
returnType = method.ReturnType;
//execute request datacommand and return data if applicable
switch (command.ReturnType)
{
case DataCommandReturnType.Integer:
object newID = dataCommandDB.ExecuteDataCommand(method.RequestDataCommand, parameters);
if (method is PostRestServiceMethod)
{
DataCommand postCommand = null;
PostRestServiceMethod postMethod = (PostRestServiceMethod)method;
returnType = postMethod.ReturnType;
if (!String.IsNullOrEmpty(postMethod.ResponseDataCommand))
{
postCommand = DataCommand.GetDataCommand(postMethod.ResponseDataCommand);
if (postCommand == null)
{
throw new ApplicationException(String.Format("Response Data Command - {0} - could not be found in configuration", postMethod.ResponseDataCommand));
}
parameters = GetPopulatedCommandParameters(postMethod.ResponseDataCommand, method.DataCommands, newID);
switch (returnType)
{
case RestServiceMethodReturnTypeEnum.DataRow:
case RestServiceMethodReturnTypeEnum.DataTable:
dt = dataCommandDB.GetDataForDataCommand(postMethod.ResponseDataCommand, parameters);
break;
case RestServiceMethodReturnTypeEnum.Xml:
doc = dataCommandDB.GetXmlDataForDataCommand(postMethod.ResponseDataCommand, parameters);
break;
}
}
}
if (method is PutRestServiceMethod)
{
PutRestServiceMethod putMethod = (PutRestServiceMethod)method;
returnType = putMethod.ReturnType;
if (!String.IsNullOrEmpty(putMethod.ResponseDataCommand))
{
parameters = GetPopulatedCommandParameters(putMethod.ResponseDataCommand, method.DataCommands, newID);
dt = dataCommandDB.GetDataForDataCommand(putMethod.ResponseDataCommand, parameters);
}
}
break;
case DataCommandReturnType.Xml:
doc = dataCommandDB.GetXmlDataForDataCommand(method.RequestDataCommand, parameters);
break;
default:
dt = dataCommandDB.GetDataForDataCommand(method.RequestDataCommand, parameters);
break;
}
//in certain cases execute response datacommand
}
else
{
throw new NotSupportedException();
}
//get data if any
if (
((dt != null) && (returnType == RestServiceMethodReturnTypeEnum.DataTable)) ||
((dt != null) && (returnType == RestServiceMethodReturnTypeEnum.DataRow)) ||
((doc != null) && (returnType == RestServiceMethodReturnTypeEnum.Xml))
)
{
if (Format.ToLower() == "json")
{
using (JsonWriter json = new JsonTextWriter(writer))
{
DataColumnCollection columns = null;
switch (returnType)
{
case RestServiceMethodReturnTypeEnum.DataTable:
columns = dt.Columns;
BuildJsonArrayResponse(app, context, method, command, dt, json, columns);
break;
case RestServiceMethodReturnTypeEnum.DataRow:
columns = dt.Columns;
BuildJsonObjectResponse(app, context, method, command, dt, json, columns);
break;
case RestServiceMethodReturnTypeEnum.Xml:
BuildJsonXmlObjectResponse(app, method, builder, doc);
break;
}
}
}
else
{
//xml
using (XmlWriter xml = new XmlTextWriter(writer))
{
DataColumnCollection columns = null;
switch (method.ReturnType)
{
case RestServiceMethodReturnTypeEnum.DataTable:
columns = dt.Columns;
BuildXmlListResponse(app, context, method, command, dt, xml, columns);
break;
case RestServiceMethodReturnTypeEnum.DataRow:
columns = dt.Columns;
BuildXmlItemResponse(app, context, method, command, dt, xml, columns);
break;
case RestServiceMethodReturnTypeEnum.Xml:
BuildXmlObjectResponse(app, method, doc, xml);
break;
}
}
}
}
//perform any special post processing
//string url = ((System.Web.Routing.Route)(RouteData.Route)).Url;
//context.Response.Write("From the handler at " + DateTime.Now + " - " + Me.Name + " - " + url + " - " + HttpContext.Current.Request.HttpMethod);
//context.Response.ContentType = "text/xml";
//context.Response.Write(dt.DataSet.GetXml());
context.Response.StatusCode = (int)HttpStatusCode.OK;
context.Response.Write(builder.ToString());
}
catch (CodeTorchException cex)
{
builder = new StringBuilder();
RestServiceException exception = new RestServiceException();
exception.Status = (int)HttpStatusCode.InternalServerError;
exception.Message = cex.Message;
exception.MoreInfo = cex.MoreInfo;
exception.ErrorCode = cex.ErrorCode;
context.Response.TrySkipIisCustomErrors = true;
context.Response.StatusCode = exception.Status;
SerializeRestException(app, context, builder, writer, exception);
}
catch (Exception ex)
{
builder = new StringBuilder();
RestServiceException exception = new RestServiceException();
exception.Status = (int)HttpStatusCode.InternalServerError;
exception.Message = ex.Message;
context.Response.TrySkipIisCustomErrors = true;
context.Response.StatusCode = exception.Status;
SerializeRestException(app, context, builder, writer, exception);
}
}
