/// <summary>
/// Catches descriptive metadata id and administrative metadata id (Right section) for all files in the METS xml document.
/// </summary>
private void LoadFileMetadataPointer()
{
MetadataPointer = MetsElement.Descendants(this.MetsNamespace + MetsConstants.File)
.Where(fl => fl.Element(this.MetsNamespace + MetsConstants.Flocat) != null &&
fl.Element(this.MetsNamespace + MetsConstants.Flocat).Attribute(this.XlinkNamespace + MetsConstants.Href) != null)
.Select(fl => new FileMetadataPointer
{
Id = fl.Attribute(MetsConstants.Id).Value,
FileName = fl.Element(this.MetsNamespace + MetsConstants.Flocat).Attribute(this.XlinkNamespace + MetsConstants.Href).Value,
RightsIds = (null == fl.Attribute(MetsConstants.AdmId)) ? new string[] { } :
fl.Attribute(MetsConstants.AdmId).Value.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries),
DescriptiveIds = (null == fl.Attribute(MetsConstants.DmdId)) ? new string[] { } :
fl.Attribute(MetsConstants.DmdId).Value.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
})
.ToArray();
}
/// <summary>
/// Get xmlData section for a file in METS xml.
/// </summary>
/// <param name="fileName">Name of file to get XML data sections.</param>
/// <returns>Array of XML data section.</returns>
private XmlMetadata[] GetXmlData(string fileName)
{
IEnumerable <FileMetadataPointer> filePointers = MetadataPointer.Where(flmdptr => flmdptr.FileName
.Equals(fileName, StringComparison.OrdinalIgnoreCase));
if (0 == filePointers.Count())
{
return(null);
}
var descriptiveData = filePointers.SelectMany(file => file.DescriptiveIds)
.Join(MetsElement.Descendants(this.MetsNamespace + MetsConstants.DmdSec),
dmdId => dmdId,
md => md.Attribute(MetsConstants.Id).Value,
(dmdId, md) => new
{
MdWrap = md.Descendants(this.MetsNamespace + MetsConstants.MdWrap).FirstOrDefault(),
IsDiscriptive = true
});
var rightsData = filePointers.SelectMany(file => file.RightsIds)
.Join(MetsElement.Descendants(this.MetsNamespace + MetsConstants.RightsMD),
admId => admId,
md => md.Attribute(MetsConstants.Id).Value,
(admId, md) => new
{
MdWrap = md.Descendants(this.MetsNamespace + MetsConstants.MdWrap).FirstOrDefault(),
IsDiscriptive = false
});
XmlMetadata[] fileMetadata = descriptiveData.Union(rightsData)
.Where(wp => wp.MdWrap != null &&
wp.MdWrap.Attribute(MetsConstants.MimeType) != null &&
wp.MdWrap.Attribute(MetsConstants.MimeType).Value.Equals(
MetsConstants.TextXml, StringComparison.OrdinalIgnoreCase))
.Select(wp => new XmlMetadata
{
Metadata = wp.MdWrap.Descendants(this.MetsNamespace + MetsConstants.XmlData)
.FirstOrDefault(),
MdType = wp.MdWrap.Attribute(MetsConstants.MdType).Value,
IsDiscriptive = wp.IsDiscriptive
})
.ToArray();
return(fileMetadata);
}
/// <summary>
/// Validate Dublin Core xml data against Dublin Core xml schema.
/// </summary>
private void ValidDublinCoreContent()
{
var dublinCoreElements = MetsElement.Descendants(this.MetsNamespace + MetsConstants.MdWrap)
.Where(wrap => wrap.Attribute(MetsConstants.MimeType) != null &&
wrap.Attribute(MetsConstants.MimeType).Value == MetsConstants.TextXml &&
wrap.Attribute(MetsConstants.MdType).Value == MetsConstants.DublinCorePrefix)
.Select(wrap => wrap.Element(this.MetsNamespace + MetsConstants.XmlData));
foreach (XElement dublinCoreXml in dublinCoreElements)
{
XmlReaderSettings xmlRdSetting = new XmlReaderSettings();
xmlRdSetting.ValidationType = ValidationType.Schema;
xmlRdSetting.ConformanceLevel = ConformanceLevel.Auto;
xmlRdSetting.Schemas.Add(this.DublinCoreSchema);
XmlTextReader dublinCoreData = new XmlTextReader(
dublinCoreXml.ToString(),
XmlNodeType.Element,
null);
XmlReader validatorReader = null;
try
{
validatorReader = XmlReader.Create(dublinCoreData, xmlRdSetting);
while (validatorReader.Read())
{
;
}
}
finally
{
if (null != validatorReader)
{
validatorReader.Close();
}
if (null != dublinCoreData)
{
dublinCoreData.Close();
}
}
}
}
