public void ProcessRequest(HttpContext context, Uri serviceBaseUri)
{
var sparqlGenerator = new SparqlGenerator(_config.Map, _config.DefaultLanguageCode, _config.MaxPageSize);
var messageWriterSettings = new ODataMessageWriterSettings(_config.BaseODataWriterSettings)
{
BaseUri = serviceBaseUri
};
if (context.Request.AcceptTypes != null)
{
messageWriterSettings.SetContentType(String.Join(",", context.Request.AcceptTypes),
context.Request.Headers["Accept-Charset"]);
}
var requestMessage = new HttpDataRequestMessage(context.Request);
ODataVersion effectiveVersion = GetEffectiveODataVersion(requestMessage);
messageWriterSettings.Version = effectiveVersion;
var metadataUri = new Uri(serviceBaseUri, "./$metadata");
if (serviceBaseUri.Equals(context.Request.Url))
{
// We need to respond with the service document
var responseMessage = new HttpDataResponseMessage(context.Response);
context.Response.ContentType = "application/xml";
context.Response.ContentEncoding = System.Text.Encoding.UTF8;
var feedGenerator = new ODataFeedGenerator(requestMessage, responseMessage,
_config.Map, serviceBaseUri.ToString(),
messageWriterSettings);
feedGenerator.WriteServiceDocument();
}
else if (serviceBaseUri.ToString().TrimEnd('/').Equals(context.Request.Url.ToString().TrimEnd('/')))
{
// Trimming of trailing slash to normalize - the serviceBaseUri should always have a trailing slash,
// but we will redirect requests that do not to the proper service document url
context.Response.RedirectPermanent(serviceBaseUri.ToString(), true);
}
else if (metadataUri.Equals(context.Request.Url))
{
context.Response.ContentType = "application/xml";
context.Response.WriteFile(_config.MetadataPath);
}
else
{
var parsedQuery = QueryDescriptorQueryNode.ParseUri(
context.Request.Url,
serviceBaseUri,
_config.Model);
sparqlGenerator.ProcessQuery(parsedQuery);
var responseMessage = new HttpDataResponseMessage(context.Response);
var feedGenerator = new ODataFeedGenerator(
requestMessage,
responseMessage,
_config.Map,
serviceBaseUri.ToString(),
messageWriterSettings);
sparqlGenerator.SparqlQueryModel.Execute(_config.SparqlEndpoint, feedGenerator);
context.Response.ContentType = "application/atom+xml";
}
}
private static ODataVersion GetEffectiveODataVersion(HttpDataRequestMessage requestMessage)
{
string szDsVersion = requestMessage.GetHeader("DataServiceVersion");
if (String.IsNullOrEmpty(szDsVersion))
{
// Request specified no version, so return with the highest version the server can provide
return ServerMaxVersion;
}
var dsVersion = ODataUtils.StringToODataVersion(szDsVersion);
string szMaxDsVersion = requestMessage.GetHeader("MaxDataServiceVersion");
var maxDsVersion = String.IsNullOrEmpty(szMaxDsVersion)
? dsVersion
: ODataUtils.StringToODataVersion(szMaxDsVersion);
return maxDsVersion > ServerMaxVersion ? ServerMaxVersion : maxDsVersion;
}
private static ODataVersion GetEffectiveODataVersion(HttpDataRequestMessage requestMessage)
{
string szDsVersion = requestMessage.GetHeader("DataServiceVersion");
if (String.IsNullOrEmpty(szDsVersion))
{
// Request specified no version, so return with the highest version the server can provide
return(ServerMaxVersion);
}
var dsVersion = ODataUtils.StringToODataVersion(szDsVersion);
string szMaxDsVersion = requestMessage.GetHeader("MaxDataServiceVersion");
var maxDsVersion = String.IsNullOrEmpty(szMaxDsVersion)
? dsVersion
: ODataUtils.StringToODataVersion(szMaxDsVersion);
return(maxDsVersion > ServerMaxVersion ? ServerMaxVersion : maxDsVersion);
}
public void ProcessRequest(HttpContext context, Uri serviceBaseUri)
{
var sparqlGenerator = new SparqlGenerator(_config.Map, _config.DefaultLanguageCode, _config.MaxPageSize);
var messageWriterSettings = new ODataMessageWriterSettings(_config.BaseODataWriterSettings)
{
BaseUri = serviceBaseUri
};
if (context.Request.AcceptTypes != null)
{
messageWriterSettings.SetContentType(String.Join(",", context.Request.AcceptTypes),
context.Request.Headers["Accept-Charset"]);
}
var requestMessage = new HttpDataRequestMessage(context.Request);
ODataVersion effectiveVersion = GetEffectiveODataVersion(requestMessage);
messageWriterSettings.Version = effectiveVersion;
var metadataUri = new Uri(serviceBaseUri, "./$metadata");
if (serviceBaseUri.Equals(context.Request.Url))
{
// We need to respond with the service document
var responseMessage = new HttpDataResponseMessage(context.Response);
context.Response.ContentType = "application/xml";
context.Response.ContentEncoding = System.Text.Encoding.UTF8;
var feedGenerator = new ODataFeedGenerator(requestMessage, responseMessage,
_config.Map, serviceBaseUri.ToString(),
messageWriterSettings);
feedGenerator.WriteServiceDocument();
}
else if (serviceBaseUri.ToString().TrimEnd('/').Equals(context.Request.Url.ToString().TrimEnd('/')))
{
// Trimming of trailing slash to normalize - the serviceBaseUri should always have a trailing slash,
// but we will redirect requests that do not to the proper service document url
context.Response.RedirectPermanent(serviceBaseUri.ToString(), true);
}
else if (metadataUri.Equals(context.Request.Url))
{
context.Response.ContentType = "application/xml";
context.Response.WriteFile(_config.MetadataPath);
}
else
{
var parsedQuery = QueryDescriptorQueryNode.ParseUri(
context.Request.Url,
serviceBaseUri,
_config.Model);
sparqlGenerator.ProcessQuery(parsedQuery);
var responseMessage = new HttpDataResponseMessage(context.Response);
var feedGenerator = new ODataFeedGenerator(
requestMessage,
responseMessage,
_config.Map,
serviceBaseUri.ToString(),
messageWriterSettings);
sparqlGenerator.SparqlQueryModel.Execute(_config.SparqlEndpoint, feedGenerator);
context.Response.ContentType = "application/atom+xml";
}
}
