/// <summary>
/// Creates a new resource of type collectionName in the repository.
/// </summary>
/// <param name="collectionName">The resource type.</param>
/// <param name="atomEntry">Information about the resource.</param>
/// <returns>A SyndicationItem that describes the newly created resource.</returns>
/// <exception cref="ArgumentNullException">Throws exception if collectionName is null/empty
/// or atomEntry is null/empty .</exception>
SyndicationItem IAtomPubStoreWriter.CreateMember(string collectionName, AtomEntryDocument atomEntry)
{
if (string.IsNullOrEmpty(collectionName))
{
throw new ArgumentNullException("collectionName");
}
if (null == atomEntry)
{
throw new ArgumentNullException("atomEntry");
}
AuthenticatedToken authenticatedToken = CoreHelper.GetAuthenticationToken();
using (ZentityContext context = CoreHelper.CreateZentityContext())
{
if (!authenticatedToken.HasCreatePermission(context))
{
throw new UnauthorizedException(Resources.ATOMPUB_UNAUTHORIZED);
}
ScholarlyWork resource = CreateScholarlyWork(collectionName);
context.AddToResources(resource);
ZentityAtomPubStoreWriter.UpdateResourceProperty(context, resource, atomEntry);
resource.GrantDefaultPermissions(context, authenticatedToken);
context.SaveChanges();
return(ZentityAtomPubStoreReader.GenerateSyndicationItem(this.BaseUri, resource));
}
}
/// <summary>
/// Processes the request.
/// </summary>
/// <param name="context">The HttpContext for the incoming HTTP request.</param>
/// <param name="statusCode">The HTTP Status Code that must be returned to the client.</param>
/// <returns>The response that must be sent to the client.</returns>
public override string ProcessRequest(HttpContext context, out HttpStatusCode statusCode)
{
if (!AtomPubHelper.ValidatePrecondition(context, base.BaseUri, out statusCode))
{
if (HttpStatusCode.PreconditionFailed == statusCode)
{
return(Properties.Resources.ATOMPUB_PRECONDITION_FAILED);
}
else
{
return(Properties.Resources.ATOMPUB_RESOURCE_NOT_MODIFIED);
}
}
string errorMessage = string.Empty;
// used to hold updated member metadata.
AtomEntryDocument atomDocument = null;
AtomPubRequestType requestType = AtomPubHelper.GetAtomPubRequestType(context, base.BaseUri);
try
{
switch (requestType)
{
case AtomPubRequestType.EditMember:
atomDocument = UpdateMember(context);
break;
case AtomPubRequestType.EditMedia:
atomDocument = UpdateMedia(context);
break;
case AtomPubRequestType.ServiceDocument:
case AtomPubRequestType.Collection:
case AtomPubRequestType.CollectionWithPageNo:
case AtomPubRequestType.Unknwon:
default:
statusCode = HttpStatusCode.BadRequest;
errorMessage = Resources.ATOMPUB_INVALID_URL;
break;
}
}
catch (ResourceNotFoundException)
{
statusCode = HttpStatusCode.NotFound;
return(Properties.Resources.ATOMPUB_RESOURCE_NOT_FOUND);
}
if (null != atomDocument)
{
statusCode = HttpStatusCode.OK;
string memberId = AtomPubHelper.GetValueOfParameterFromUri(context, base.BaseUri, AtomPubParameterType.Id);
string eTag = AtomPubHelper.CalculateETag(memberId);
context.Response.AddHeader(AtomPubConstants.KeyETag, eTag);
return(atomDocument.AtomEntry);
}
else
{
return(errorMessage);
}
}
/// <summary>
/// Gets the AtomEntryDocument from the specified collection and for the specified member resource.
/// </summary>
/// <param name="collectionName">The collection name.</param>
/// <param name="memberResourceId">The Id of the member resource.</param>
/// <returns>An AtomEntryDocument containing information for the member resource.</returns>
private AtomEntryDocument GetAtomEntryDocument(string collectionName, string memberResourceId)
{
IAtomPubStoreReader storeReader = AtomPubStoreFactory.GetAtomPubStoreReader(base.BaseUri.OriginalString);
SyndicationItem syndicationItem = storeReader.GetMember(collectionName, memberResourceId);
AtomEntryDocument atomEntryDoc = new AtomEntryDocument(syndicationItem);
return(atomEntryDoc);
}
/// <summary>
/// Creates a member resource using the information present in the HttpContext.
/// </summary>
/// <param name="context">The HttpContext for the incoming HTTP request.</param>
/// <returns>An AtomEntryDocument corresponding to the newly created member resource.</returns>
private AtomEntryDocument CreateMember(HttpContext context)
{
string collectionName = AtomPubHelper.GetValueOfParameterFromUri(context, base.BaseUri,
AtomPubParameterType.CollectionName);
//Get AtomEntryDocument for request to update the member information.
AtomEntryDocument atomEntry = new AtomEntryDocument(context.Request.InputStream);
IAtomPubStoreWriter atomPubStoreWriter = AtomPubStoreFactory.GetAtomPubStoreWriter(base.BaseUri.OriginalString);
SyndicationItem item = atomPubStoreWriter.CreateMember(collectionName, atomEntry);
// Create atom entry document from syndication item.
return(new AtomEntryDocument(item));
}
/// <summary>
/// Updates a member resource using the information present in the HttpContext.
/// </summary>
/// <param name="context">The HttpContext for the incoming HTTP request.</param>
/// <returns>An AtomEntryDocument corresponding to the updated member resource.</returns>
private AtomEntryDocument UpdateMember(HttpContext context)
{
// Gets the atom request template match result to get requested collection name.
string collectionName = AtomPubHelper.GetValueOfParameterFromUri(context, base.BaseUri, AtomPubParameterType.CollectionName);
string memberId = AtomPubHelper.GetValueOfParameterFromUri(context, base.BaseUri, AtomPubParameterType.Id);
IAtomPubStoreWriter atomPubStoreWriter = AtomPubStoreFactory.GetAtomPubStoreWriter(base.BaseUri.OriginalString);
//Get AtomEntryDocument for request to update the member information.
AtomEntryDocument atomDocument = new AtomEntryDocument(context.Request.InputStream);
SyndicationItem item = atomPubStoreWriter.UpdateMemberInfo(collectionName, memberId, atomDocument);
// Get AtomEntryDocument for response.
return(new AtomEntryDocument(item));
}
/// <summary>
/// Handles the POST request send to the collection Uri. The method assumes that the request is
/// already validated using ValidateRequest method.
/// </summary>
/// <param name="context">HttpContext containing the request object.</param>
/// <param name="statusCode">returns the status of the request.</param>
/// <returns>A string containing the response for the specified AtomPub request.</returns>
public override string ProcessRequest(HttpContext context, out System.Net.HttpStatusCode statusCode)
{
string response = string.Empty;
AtomEntryDocument atomEntryDocument = null;
bool isAtomEntryType = AtomPubHelper.IsAtomEntryMediaType(context.Request.ContentType);
if (isAtomEntryType)
{
// If request stream contains AtomEntryDocument, then client wants to create new Member.
atomEntryDocument = this.CreateMember(context);
}
else
{
// If request stream contains something other than AtomEntryDocument,
// then client wants to create new member with Media.
atomEntryDocument = this.CreateMedia(context);
}
// Add Location Header
SyndicationLink editLink = atomEntryDocument.Links
.Where(link => link.RelationshipType == AtomPubConstants.Edit)
.FirstOrDefault();
if (null != editLink)
{
context.Response.AddHeader(AtomPubConstants.KeyLocation, editLink.Uri.AbsoluteUri);
}
// Add ETag header
string[] memberIds = atomEntryDocument.Id.Split(new string[] { AtomPubConstants.IdPrefix },
StringSplitOptions.RemoveEmptyEntries);
if (0 < memberIds.Length)
{
string eTag = AtomPubHelper.CalculateETag(memberIds[0]);
context.Response.AddHeader(AtomPubConstants.KeyETag, eTag);
}
response = atomEntryDocument.AtomEntry;
statusCode = HttpStatusCode.Created;
return(response);
}
/// <summary>
/// Creates a media resource using the information present in the HttpContext.
/// </summary>
/// <param name="context">The HttpContext for the incoming HTTP request.</param>
/// <returns>An AtomEntryDocument corresponding to the newly created media resource.</returns>
private AtomEntryDocument CreateMedia(HttpContext context)
{
SyndicationItem item = null;
string collectionName = AtomPubHelper.GetValueOfParameterFromUri(context,
base.BaseUri,
AtomPubParameterType.CollectionName);
// Get byte array to update media.
BinaryReader reader = new BinaryReader(context.Request.InputStream);
byte[] media = new byte[context.Request.InputStream.Length];
reader.Read(media, 0, media.Length);
string fileExtention = string.Empty;
if (context.Request.Headers.AllKeys.Contains("Content-Disposition"))
{
fileExtention = AtomPubHelper.GetFileExtentionFromContentDisposition(
context.Request.Headers["Content-Disposition"]);
}
IAtomPubStoreWriter swordStoreWriter = AtomPubStoreFactory.GetSwordStoreWriter();
item = swordStoreWriter.CreateMedia(collectionName, context.Request.ContentType, media, fileExtention);
AtomEntryDocument atomEntryDocument = null;
if (null != item)
{
// Add <sword:treatment>Successfully created a {Collection Name}</sword:treatment> element.
SwordPostProcessor.AddTreatmentElement(collectionName, item);
// Create atom entry document from syndication item.
atomEntryDocument = new AtomEntryDocument(item);
}
return(atomEntryDocument);
}
/// <summary>
/// Updates the resource property.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="resource">The resource.</param>
/// <param name="atomEntry">The atom entry.</param>
private static void UpdateResourceProperty(
ZentityContext context,
ScholarlyWork resource,
AtomEntryDocument atomEntry)
{
resource.Title = atomEntry.Title.Text;
SetContentType(context, resource, atomEntry.Title.Type, AtomPubConstants.TitleTypeProperty);
resource.DateModified = DateTime.Now;
Publication publication = resource as Publication;
if (null != publication && atomEntry.PublishDate != DateTimeOffset.MinValue)
{
publication.DatePublished = atomEntry.PublishDate.DateTime;
}
if (null != atomEntry.Copyright)
{
resource.Copyright = atomEntry.Copyright.Text;
SetContentType(context, resource, atomEntry.Copyright.Type, AtomPubConstants.CopyrightTypeProperty);
}
if (null != atomEntry.Summary && !string.IsNullOrEmpty(atomEntry.Summary.Text))
{
SetExtensionProperty(context, resource, AtomPubConstants.SummaryProperty, atomEntry.Summary.Text);
SetContentType(context, resource, atomEntry.Summary.Type, AtomPubConstants.SummaryTypeProperty);
}
if (null != atomEntry.Content)
{
UrlSyndicationContent urlContent = atomEntry.Content as UrlSyndicationContent;
if (null != urlContent)
{
resource.Description = null;
SetExtensionProperty(context, resource, AtomPubConstants.ContentUrlProperty, urlContent.Url.AbsoluteUri);
}
else
{
ResourceProperty urlContentProperty = ZentityAtomPubStoreReader.GetResourceProperty(resource, AtomPubConstants.ContentUrlProperty);
if (null != urlContentProperty)
{
resource.ResourceProperties.Remove(urlContentProperty);
}
TextSyndicationContent textDescription = atomEntry.Content as TextSyndicationContent;
if (null != textDescription)
{
resource.Description = textDescription.Text;
}
else
{
XmlSyndicationContent content = atomEntry.Content as XmlSyndicationContent;
if (null != content)
{
XmlDictionaryReader contentReader = content.GetReaderAtContent();
StringBuilder contentValue = new StringBuilder(151);
try
{
while (contentReader.Read())
{
contentValue.Append(contentReader.Value);
}
}
finally
{
contentReader.Close();
}
resource.Description = contentValue.ToString();
}
}
}
SetContentType(context, resource, atomEntry.Content.Type, AtomPubConstants.DescriptionTypeProperty);
}
if (null != atomEntry.Source)
{
ResourceProperty source = ZentityAtomPubStoreReader.GetResourceProperty(resource, AtomPubConstants.SourceProperty);
if (null == source)
{
Property sourceProperty = GetProperty(context, AtomPubConstants.SourceProperty);
source = new ResourceProperty
{
Property = sourceProperty,
Resource = resource,
};
}
source.Value = atomEntry.Source;
}
#region Add Links
List <ResourceProperty> links = ZentityAtomPubStoreReader.GetResourceProperties(resource, AtomPubConstants.LinksProperty);
if (0 == atomEntry.XmlLinks.Count && null != links)
{
foreach (var item in links)
{
resource.ResourceProperties.Remove(item);
}
}
Property linkProperty = GetProperty(context, AtomPubConstants.LinksProperty);
foreach (string xmlLink in atomEntry.XmlLinks)
{
resource.ResourceProperties.Add(new ResourceProperty
{
Resource = resource,
Property = linkProperty,
Value = xmlLink
});
}
#endregion
var authors = atomEntry.Authors.Select(author => new Person
{
Title = author.Name,
Email = author.Email,
Uri = author.Uri
});
// Bug Fix : 177689 - AtomPub (M2): Author node is appending after every PUT request instead
// of overwriting it.
// Remove previous authors.
resource.Authors.Clear();
AddPersons(context, resource.Authors, authors);
resource.Contributors.Clear();
var contributors = atomEntry.Contributors.Select(author => new Person
{
Title = author.Name,
Email = author.Email,
Uri = author.Uri
});
AddPersons(context, resource.Contributors, contributors);
}
/// <summary>
/// Updates the metadata for the specified resource.
/// </summary>
/// <param name="collectionName">Name of the target collection.</param>
/// <param name="memberResourceId">The Id of the member resource.</param>
/// <param name="atomEntry">Describes the resource to be modified.</param>
/// <returns>A SyndicationItem that describes the updated resource.</returns>
/// <exception cref="ArgumentNullException">Throws exception if collectionName is null/empty
/// or atomEntry is null.</exception>
/// <exception cref="ArgumentException">Throws exception if requested memberResourceId is not a unique identifier.</exception>
SyndicationItem IAtomPubStoreWriter.UpdateMemberInfo(string collectionName, string memberResourceId, AtomEntryDocument atomEntry)
{
if (string.IsNullOrEmpty(collectionName))
{
throw new ArgumentNullException("collectionName");
}
if (string.IsNullOrEmpty(memberResourceId))
{
throw new ArgumentNullException("memberResourceId");
}
if (null == atomEntry)
{
throw new ArgumentNullException("atomEntry");
}
using (ZentityContext context = CoreHelper.CreateZentityContext())
{
ScholarlyWork resource = (ScholarlyWork)AtomPubHelper.GetMember(context, collectionName, memberResourceId, "Update");
resource.Files.Load();
// Bug Fix : 177689 - AtomPub (M2): Author node is appending after every PUT request instead of overwriting it.
resource.Authors.Load();
resource.Contributors.Load();
UpdateResourceProperty(context, resource, atomEntry);
context.SaveChanges();
return(ZentityAtomPubStoreReader.GenerateSyndicationItem(this.BaseUri, resource));
}
}
/// <summary>
/// Handles the POST request send to the collection Uri. The method assumes that the request is
/// already validated using ValidateRequest method.
/// </summary>
/// <param name="context">HttpContext containing the request.</param>
/// <param name="statusCode">Contains the status of the request.</param>
/// <returns>A string containing the response for the specified AtomPub request.</returns>
/// <remarks>If a zip file is sent with the POST request to the collection uri,
/// the contents of the zip file are extracted and the individual files will be uploaded
/// in the repository.
/// The zip file should contain the mets.xml containing the metadata of the individual files.
/// If mets.xml is not found in the specified zip file, status code 'PreconditionFailed' will
/// be returned.
/// </remarks>
public override string ProcessRequest(HttpContext context, out System.Net.HttpStatusCode statusCode)
{
string response = string.Empty;
AtomEntryDocument atomEntryDocument = null;
bool isAtomEntryType = AtomPubHelper.IsAtomEntryMediaType(context.Request.ContentType);
try
{
if (isAtomEntryType)
{
response = base.ProcessRequest(context, out statusCode);
System.Xml.XmlTextReader responseReader = null;
try
{
responseReader = new System.Xml.XmlTextReader(response, System.Xml.XmlNodeType.Document, null);
SyndicationItem responseItem = SyndicationItem.Load(responseReader);
string collectionName = AtomPubHelper.GetValueOfParameterFromUri(context,
base.BaseUri,
AtomPubParameterType.CollectionName);
// Add <sword:treatment>Successfully created a {Collection Name}</sword:treatment> element.
SwordPostProcessor.AddTreatmentElement(collectionName, responseItem);
// Create atom entry document from syndication item.
atomEntryDocument = new AtomEntryDocument(responseItem);
}
finally
{
responseReader.Close();
}
context.Response.ContentType = AtomPubConstants.AtomEntryContentType;
}
else
{
// If request stream contains something other than AtomEntryDocument,
// then client wants to create new member with Media.
atomEntryDocument = this.CreateMedia(context);
// Done this separately because if AtomEntry is null due to some reasons,
// then also it will set the content type.
context.Response.ContentType = AtomPubConstants.AtomEntryContentType;
}
// return the atom entry response.
if (null != atomEntryDocument)
{
response = atomEntryDocument.AtomEntry;
statusCode = System.Net.HttpStatusCode.Created;
}
else
{
statusCode = System.Net.HttpStatusCode.InternalServerError;
}
}
catch (MetsException ex)
{
statusCode = System.Net.HttpStatusCode.InternalServerError;
response = ex.Message;
}
catch (SwordException ex)
{
statusCode = System.Net.HttpStatusCode.UnsupportedMediaType;
response = ex.Message;
}
finally
{
string zipExtractedPath = context.Items[SwordConstants.ZipExtractedPath] as string;
if (!string.IsNullOrEmpty(zipExtractedPath) && Directory.Exists(zipExtractedPath))
{
Directory.Delete(zipExtractedPath, true);
context.Items[SwordConstants.ZipExtractedPath] = null;
}
}
return(response);
}
/// <summary>
/// Adds the links and source.
/// </summary>
/// <param name="baseUri">The base URI.</param>
/// <param name="resource">The resource.</param>
/// <param name="item">The syndication item.</param>
private static void AddLinksAndSource(Uri baseUri, ScholarlyWork resource, ref SyndicationItem item)
{
// NameValue pair for creating Uri from UriTemplate.
NameValueCollection parameters = new NameValueCollection();
parameters.Add(AtomPubParameterType.CollectionName.ToString(), resource.GetType().Name);
parameters.Add(AtomPubParameterType.Id.ToString(), resource.Id.ToString());
Core.File mediaFile = resource.Files.FirstOrDefault();
if (null != mediaFile)
{
Uri mediaUri = AtomPubHelper.AtomPubTemplates[AtomPubRequestType.EditMedia]
.BindByName(baseUri, parameters);
// Add content linnk and edit-media link
if (string.IsNullOrEmpty(mediaFile.MimeType))
{
mediaFile.MimeType = AtomPubConstants.DefaultMimeType;
}
SyndicationLink resourceMediaLink = new SyndicationLink(mediaUri);
resourceMediaLink.RelationshipType = AtomPubConstants.EditMedia;
item.Links.Add(resourceMediaLink);
item.Content = new UrlSyndicationContent(mediaUri, mediaFile.MimeType);
}
else
{
ResourceProperty urlContent = GetResourceProperty(resource, AtomPubConstants.ContentUrlProperty);
if (null != urlContent && !string.IsNullOrEmpty(urlContent.Value))
{
item.Content = GetContent <UrlSyndicationContent>(urlContent.Value, resource.ResourceProperties, AtomPubConstants.DescriptionTypeProperty, false);
}
else
{
item.Content = GetContent <SyndicationContent>(resource.Description, resource.ResourceProperties, AtomPubConstants.DescriptionTypeProperty, true);
}
}
// Add resource Edit link
Uri resourceUri = AtomPubHelper.AtomPubTemplates[AtomPubRequestType.EditMember].BindByName(baseUri, parameters);
SyndicationLink resourceEditLink = new SyndicationLink(resourceUri);
resourceEditLink.RelationshipType = AtomPubConstants.Edit;
item.Links.Add(resourceEditLink);
if (null != resource.Container)
{
var relatedItems = resource.Container.ContainedWorks.OfType <ScholarlyWorkContainer>()
.SelectMany(tuple => tuple.ContainedWorks)
.Where(tuple => !(tuple is ScholarlyWorkContainer));
foreach (ScholarlyWork containedItem in relatedItems)
{
parameters.Set(AtomPubParameterType.CollectionName.ToString(), containedItem.GetType().Name);
parameters.Set(AtomPubParameterType.Id.ToString(), containedItem.Id.ToString());
resourceUri = AtomPubHelper.AtomPubTemplates[AtomPubRequestType.EditMember].BindByName(baseUri, parameters);
SyndicationLink containsEditLink = new SyndicationLink(resourceUri);
containsEditLink.RelationshipType = AtomPubConstants.Related;
item.Links.Add(containsEditLink);
}
}
AtomEntryDocument entry = new AtomEntryDocument(item);
IEnumerable <ResourceProperty> links = ZentityAtomPubStoreReader.GetResourceProperties(resource, AtomPubConstants.LinksProperty);
if (null != links)
{
foreach (ResourceProperty link in links)
{
entry.XmlLinks.Add(link.Value);
}
}
ResourceProperty source = GetResourceProperty(resource, AtomPubConstants.SourceProperty);
if (null != source)
{
entry.Source = source.Value;
}
using (XmlReader reader = new XmlTextReader(entry.AtomEntry, XmlNodeType.Document, null))
{
item = SyndicationItem.Load(reader);
}
}
