/// <summary>
/// Writes the supplied <see cref="ISyndicationResource"/> to the specified <see cref="HttpContext"/> response stream and sets the appropriate headers.
/// </summary>
/// <param name="context">
/// An <see cref="HttpContext"/> object that provides references to the intrinsic server objects
/// (for example, <b>Request</b>, <b>Response</b>, <b>Session</b>, and <b>Server</b>) used to service HTTP requests.
/// </param>
/// <param name="resource">The <see cref="ISyndicationResource"/> to be written to the response stream.</param>
/// <exception cref="ArgumentNullException">The <paramref name="context"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
private void WriteResource(HttpContext context, ISyndicationResource resource)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(context, "context");
Guard.ArgumentNotNull(resource, "resource");
//------------------------------------------------------------
// Process conditional GET information if present
// (If conditions met, handler execution stops.)
//------------------------------------------------------------
SyndicationResourceHandler.ProcessConditionalGetInformation(context, resource);
//------------------------------------------------------------
// Modify response meta-data information
//------------------------------------------------------------
context.Response.ContentType = SyndicationResourceHandler.ContentFormatAsMimeType(resource.Format);
context.Response.AppendHeader("Content-Disposition", SyndicationResourceHandler.GetContentDisposition(resource.Format));
//------------------------------------------------------------
// Save XML representation of resource to output stream
//------------------------------------------------------------
SyndicationResourceSaveSettings settings = new SyndicationResourceSaveSettings();
settings.AutoDetectExtensions = true;
settings.MinimizeOutputSize = false;
resource.Save(context.Response.OutputStream, settings);
//------------------------------------------------------------
// Modify response caching expiration information
//------------------------------------------------------------
this.ModifyCacheExpiration(context);
}
/// <summary>
/// Adds the supplied <see cref="ISyndicationResource"/> to the data store using the specifed <see cref="Guid"/>.
/// </summary>
/// <param name="resourceKey">A <see cref="Guid"/> that represents the globally unique identifier for the <paramref name="resource"/>.</param>
/// <param name="resource">The <see cref="ISyndicationResource"/> to be added to the data store.</param>
/// <returns>A <see cref="SyndicationResourceCreateStatus"/> enumeration value that indicates the result of the adding the syndication resource to the data store.</returns>
private SyndicationResourceCreateStatus ResourceAdd(Guid resourceKey, ISyndicationResource resource)
{
Guard.ArgumentNotNull(resource, "resource");
if (this.ResourceKeyExists(resourceKey))
{
return(SyndicationResourceCreateStatus.DuplicateProviderResourceKey);
}
string resourceFilePath = this.BuildResourcePath(resourceKey, resource.Format);
using (FileStream stream = new FileStream(resourceFilePath, FileMode.Create, FileAccess.Write))
{
SyndicationResourceSaveSettings settings = new SyndicationResourceSaveSettings();
settings.AutoDetectExtensions = true;
settings.MinimizeOutputSize = false;
resource.Save(stream, settings);
}
return(SyndicationResourceCreateStatus.Success);
}
/// <summary>
/// Updates the supplied <see cref="ISyndicationResource"/> within the data store that has the specifed <see cref="Guid"/>.
/// </summary>
/// <param name="resourceKey">A <see cref="Guid"/> that represents the globally unique identifier of the resource to be updated.</param>
/// <param name="resource">A <see cref="ISyndicationResource"/> object that represents the updated information for the resource to be updated.</param>
/// <remarks>
/// If there is no resource for the specified <paramref name="resourceKey"/>, no modification to the data store occurs.
/// </remarks>
private void ResourceUpdate(Guid resourceKey, ISyndicationResource resource)
{
Guard.ArgumentNotNull(resource, "resource");
if (!this.ResourceKeyExists(resourceKey))
{
return;
}
string resourceFilePath = this.BuildResourcePath(resourceKey, resource.Format);
if (File.Exists(resourceFilePath))
{
using (FileStream stream = new FileStream(resourceFilePath, FileMode.Create, FileAccess.Write))
{
SyndicationResourceSaveSettings settings = new SyndicationResourceSaveSettings();
settings.AutoDetectExtensions = true;
settings.MinimizeOutputSize = false;
resource.Save(stream, settings);
}
}
}
/// <summary>
/// Updates the supplied <see cref="ISyndicationResource"/> within the data store that has the specifed <see cref="Guid"/>.
/// </summary>
/// <param name="resourceKey">A <see cref="Guid"/> that represents the globally unique identifier of the resource to be updated.</param>
/// <param name="resource">A <see cref="ISyndicationResource"/> object that represents the updated information for the resource to be updated.</param>
/// <remarks>
/// If there is no resource for the specified <paramref name="resourceKey"/>, no modification to the data store occurs.
/// </remarks>
private void ResourceUpdate(Guid resourceKey, ISyndicationResource resource)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(resource, "resource");
//------------------------------------------------------------
// Validate resource exists
//------------------------------------------------------------
if (!this.ResourceKeyExists(resourceKey))
{
return;
}
//------------------------------------------------------------
// Build path to XML data file for syndication resource
//------------------------------------------------------------
string resourceFilePath = this.BuildResourcePath(resourceKey, resource.Format);
//------------------------------------------------------------
// Persist updated syndication resource information
//------------------------------------------------------------
if (File.Exists(resourceFilePath))
{
using (FileStream stream = new FileStream(resourceFilePath, FileMode.Create, FileAccess.Write))
{
SyndicationResourceSaveSettings settings = new SyndicationResourceSaveSettings();
settings.AutoDetectExtensions = true;
settings.MinimizeOutputSize = false;
resource.Save(stream, settings);
}
}
}
/// <summary>
/// Adds the supplied <see cref="ISyndicationResource"/> to the data store using the specifed <see cref="Guid"/>.
/// </summary>
/// <param name="resourceKey">A <see cref="Guid"/> that represents the globally unique identifier for the <paramref name="resource"/>.</param>
/// <param name="resource">The <see cref="ISyndicationResource"/> to be added to the data store.</param>
/// <returns>A <see cref="SyndicationResourceCreateStatus"/> enumeration value that indicates the result of the adding the syndication resource to the data store.</returns>
private SyndicationResourceCreateStatus ResourceAdd(Guid resourceKey, ISyndicationResource resource)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(resource, "resource");
//------------------------------------------------------------
// Validate resource does not already exist
//------------------------------------------------------------
if (this.ResourceKeyExists(resourceKey))
{
return SyndicationResourceCreateStatus.DuplicateProviderResourceKey;
}
//------------------------------------------------------------
// Build path to XML data file for syndication resource
//------------------------------------------------------------
string resourceFilePath = this.BuildResourcePath(resourceKey, resource.Format);
//------------------------------------------------------------
// Persist syndication resource
//------------------------------------------------------------
using (FileStream stream = new FileStream(resourceFilePath, FileMode.Create, FileAccess.Write))
{
SyndicationResourceSaveSettings settings = new SyndicationResourceSaveSettings();
settings.AutoDetectExtensions = true;
settings.MinimizeOutputSize = false;
resource.Save(stream, settings);
}
return SyndicationResourceCreateStatus.Success;
}
