public static XElement Encode(Metadata dublinCore, string granularity)
{
return new XElement(MlNamespaces.oaiDc + "dc",
new XAttribute(XNamespace.Xmlns + "oai_dc", MlNamespaces.oaiDc),
new XAttribute(XNamespace.Xmlns + "dc", MlNamespaces.dcNs),
new XAttribute(XNamespace.Xmlns + "xsi", MlNamespaces.dcXsi),
new XAttribute(MlNamespaces.dcXsi + "schemaLocation", MlNamespaces.dcSchemaLocation),
/* content */
MlEncode.Element(MlNamespaces.dcNs + "title", dublinCore.Title),
MlEncode.Element(MlNamespaces.dcNs + "creator", dublinCore.Creator),
MlEncode.Element(MlNamespaces.dcNs + "subject", dublinCore.Subject),
MlEncode.Element(MlNamespaces.dcNs + "description", dublinCore.Description),
MlEncode.Element(MlNamespaces.dcNs + "publisher", dublinCore.Publisher),
MlEncode.Element(MlNamespaces.dcNs + "contributor", dublinCore.Contributor),
!dublinCore.Date.HasValue ? null
: new XElement(MlNamespaces.dcNs + "date",
dublinCore.Date.Value.ToUniversalTime().ToString(granularity)),
MlEncode.Element(MlNamespaces.dcNs + "type", dublinCore.Type),
MlEncode.Element(MlNamespaces.dcNs + "format", dublinCore.Format),
MlEncode.Element(MlNamespaces.dcNs + "identifier", dublinCore.Identifier),
MlEncode.Element(MlNamespaces.dcNs + "source", dublinCore.Source),
MlEncode.Element(MlNamespaces.dcNs + "language", dublinCore.Language),
MlEncode.Element(MlNamespaces.dcNs + "relation", dublinCore.Relation),
MlEncode.Element(MlNamespaces.dcNs + "coverage", dublinCore.Coverage),
MlEncode.Element(MlNamespaces.dcNs + "rights", dublinCore.Rights)
);
}
public static void AddRecMetadataToDatabase(OaiPmhContext context, int recId, Metadata metadata)
{
if (context == null || recId == 0 || metadata == null)
{
return;
}
AddToDatabase(context, recId, Enums.ObjectType.OAIRecord, Enums.MetadataType.Metadata, metadata);
}
public static void AddMetadataToDatabase(OaiPmhContext context, int objId, byte objType, byte metaType, Metadata metadata)
{
context.Metadata.Add(metadata);
context.SaveChanges();
context.ObjectMetadata.Add(new ObjectMetadata()
{
ObjectId = objId,
ObjectType = objType,
MetadataType = metaType,
MetadataId = metadata.MetadataId
});
}
public static void AddToDatabase(OaiPmhContext context, int objId, byte objType, byte metaType, Metadata metadata)
{
switch (FormatList.Int2Format(metadata.MdFormat))
{
case Enums.MetadataFormats.DublinCore:
DublinCore.AddToDatabase(context, objId, objType, metaType, metadata);
break;
case Enums.MetadataFormats.Provenance:
Provenance.AddToDatabase(context, objId, objType, metaType, metadata);
break;
// TODO: Add format here
case Enums.MetadataFormats.None:
default:
break;
}
}
public static XElement Metadata(string containerName, Metadata metadata, string granularity)
{
if (string.IsNullOrEmpty(containerName) || metadata == null || string.IsNullOrEmpty(granularity))
{
return null;
}
switch (FormatList.Int2Format(metadata.MdFormat))
{
case Enums.MetadataFormats.DublinCore:
return new XElement(containerName, DublinCore.Encode(metadata, granularity));
case Enums.MetadataFormats.Provenance:
return new XElement(containerName, Provenance.Encode(metadata, granularity));
// TODO: Add format here
case Enums.MetadataFormats.None:
default:
return null;
}
}
public static void AddToDatabase(OaiPmhContext context, int objId, byte objType, byte metaType, Metadata dublinCore)
{
DbQueries.AddMetadataToDatabase(context, objId, objType, metaType, dublinCore);
}
public RecordQueryResult(Header header, Metadata metadata, IEnumerable<Metadata> about)
{
this.Header = header;
this.Metadata = metadata;
this.About = about == null ? null : about.ToList();
}
public RecordQueryResult(Header header, Metadata metadata)
{
this.Header = header;
this.Metadata = metadata;
}
public static XElement Encode(Metadata provenance, string granularity)
{
XElement mainElement = EncodeOne(provenance, granularity);
if (provenance.NestedElements != null && provenance.NestedElements.Count > 0)
{
/* nest origin descriptions */
XElement tempElement = mainElement;
foreach (var item in provenance.NestedElements)
{
tempElement.Add(EncodeOne(item, granularity));
tempElement = tempElement.Element("originDescription");
}
}
return new XElement(MlNamespaces.provNs + "provenance",
new XAttribute(XNamespace.Xmlns + "xsi", MlNamespaces.provXsi),
new XAttribute(MlNamespaces.provXsi + "schemaLocation", MlNamespaces.provSchemaLocation),
mainElement
);
}
public static void AddToDatabase(OaiPmhContext context, int objId, byte objType, byte metaType, Metadata provenance)
{
context.Metadata.Add(provenance);
context.SaveChanges();
context.ObjectMetadata.Add(new ObjectMetadata()
{
ObjectId = objId,
ObjectType = objType,
MetadataType = metaType,
MetadataId = provenance.MetadataId
});
if (provenance.NestedElements != null)
{
int prevId = provenance.MetadataId;
foreach (var item in provenance.NestedElements)
{
item.AdditionalInt1 = prevId;
context.Metadata.Add(item);
context.SaveChanges();
context.ObjectMetadata.Add(new ObjectMetadata()
{
ObjectId = objId,
ObjectType = objType,
MetadataType = metaType,
MetadataId = item.MetadataId
});
prevId = item.MetadataId;
}
}
}
private static XElement EncodeOne(Metadata provenance, string granularity)
{
return new XElement("originDescription",
new XAttribute("harvestDate",
DateInGranularity(provenance.AdditionalDateTime1, provenance.AdditionalBool2, granularity)),
new XAttribute("altered",
!provenance.AdditionalBool1.HasValue ? bool.FalseString.ToLower() :
provenance.AdditionalBool1.Value.ToString().ToLower()),
MlEncode.Element("baseUrl", provenance.Source),
MlEncode.Element("identifier", provenance.Identifier),
new XAttribute("datestamp",
DateInGranularity(provenance.Date, provenance.AdditionalBool3, granularity)),
MlEncode.Element("metadataNamespace", provenance.Format)
);
}
private static void DeleteMetadataAndLink(OaiPmhContext context, ObjectMetadata objectMetadata, Metadata metadata)
{
if (metadata != null)
{
context.Metadata.Remove(metadata);
}
if (objectMetadata != null)
{
context.ObjectMetadata.Remove(objectMetadata);
}
}
public static async Task<XElement> MetadataAsync(string containerName, Metadata metadata, string granularity)
{
return await Task.Run<XElement>(() => Metadata(containerName, metadata, granularity)).ConfigureAwait(false);
}
public static XElement Metadata(Metadata metadata, string granularity)
{
return Metadata("metadata", metadata, granularity);
}