// Retrieves metadata from Z39.50 server
private static IList <Metadata> RetrieveMetadataByZ39(IdentifierType identifierType, string value, bool isUnion)
{
string z39Server = Settings.Z39ServerUrl;
int z39Port = Settings.Z39Port;
string z39Base = Settings.Z39Base;
string z39UserName = Settings.Z39UserName;
string z39Password = Settings.Z39Password;
Record_Character_Encoding z39Encoding = Settings.Z39Encoding;
//Set union Z39.50
if (isUnion)
{
z39Server = Settings.Z39UnionServerUrl;
z39Port = Settings.Z39UnionPort;
z39Base = Settings.Z39UnionBase;
z39Encoding = Settings.Z39UnionEncoding;
z39UserName = null;
z39Password = null;
}
int identifierFieldNumber;
switch (identifierType)
{
case IdentifierType.BARCODE:
identifierFieldNumber = Settings.Z39BarcodeField;
break;
case IdentifierType.CNB:
if (isUnion)
{
identifierFieldNumber = Settings.DEFAULT_NKP_CNB_FIELD;
}
else
{
identifierFieldNumber = Settings.Z39CnbField;
}
break;
case IdentifierType.EAN:
identifierFieldNumber = Settings.Z39EanField;
break;
case IdentifierType.ISBN:
identifierFieldNumber = Settings.Z39IsbnField;
break;
case IdentifierType.ISSN:
identifierFieldNumber = Settings.Z39IssnField;
break;
case IdentifierType.ISMN:
identifierFieldNumber = Settings.Z39IsmnField;
break;
case IdentifierType.OCLC:
identifierFieldNumber = Settings.Z39OclcField;
break;
default:
identifierFieldNumber = Settings.DEFAULT_FIELD;
break;
}
//validate
string errorText = "";
if (string.IsNullOrEmpty(z39Server))
{
errorText += "Z39.50 Server URL; ";
}
if (z39Port <= 0)
{
errorText += "Z39.50 Sever Port; ";
}
if (string.IsNullOrEmpty(z39Base))
{
errorText += "Z39.50 Databáze; ";
}
if (identifierFieldNumber <= 0)
{
errorText += "Vyhledávací atribut";
}
if (!string.IsNullOrEmpty(errorText))
{
throw new ArgumentException("V nastaveních chybí následující údaje: " + errorText);
}
List <Metadata> metadataList = new List <Metadata>();
string errorMessage = "";
try
{
Z3950_Endpoint endpoint;
if (string.IsNullOrEmpty(z39UserName))
{
endpoint = new Z3950_Endpoint("Z39.50",
z39Server, (uint)z39Port, z39Base);
}
else
{
endpoint = new Z3950_Endpoint("Z39.50",
z39Server, (uint)z39Port, z39Base, z39UserName);
endpoint.Password = z39Password ?? "";
}
// Retrieve the record by primary identifier
IEnumerable <MARC_Record> recordsFromZ3950 = MARC_Record_Z3950_Retriever.Get_Record(
identifierFieldNumber, '"' + value + '"', endpoint, out errorMessage, z39Encoding);
MARCXML_Writer marcXmlWriter = new MARCXML_Writer(System.IO.Path.Combine(Settings.TemporaryFolder, "marcxml.xml"));
if (recordsFromZ3950 != null)
{
foreach (MARC_Record record in recordsFromZ3950)
{
Metadata metadata = new Metadata();
// Sysno
metadata.Sysno = record.Control_Number;
metadata.FixedFields = MarcGetFixedFields(record);
metadata.VariableFields = MarcGetVariableFields(record);
// Get identifiers list (ISBNs + 902a yearbooks)
List <MetadataIdentifier> Identifiers = getIdentifiersList(metadata);
metadata.Identifiers = Identifiers;
// Add to list
metadataList.Add(metadata);
// Write to MARC XML file
marcXmlWriter.AppendRecord(record);
}
// Finish MARC XML file
marcXmlWriter.Close();
}
}
catch (Exception e)
{
throw new Z39Exception("Nastala chyba během stahování MARC záznamu pomocí Z39.50, nebo zápisu výsledného MARC záznamu na disk. Detailnější popis problému: " + e.Message);
}
// Display any error message encountered
if (metadataList.Count == 0)
{
if (errorMessage.Length > 0)
{
if (errorMessage.Contains("No matching record found in Z39.50 endpoint"))
{
errorMessage = "Nenalezen vhodný záznam.";
}
else if (errorMessage.Contains("Connection could not be made to"))
{
errorMessage = "Nebylo možné navázat spojení s " +
errorMessage.Substring(errorMessage.LastIndexOf(' '));
}
throw new Z39Exception(errorMessage);
}
else
{
throw new Z39Exception("Nastala neznámá chyba během Z39.50 dotazu");
}
}
return(metadataList);
}
public static MARC_Record Get_Record_By_Primary_Identifier(string Primary_Identifier, Z3950_Endpoint Z3950_Server, out string Message, Record_Character_Encoding encoding)
{
// Initially set the message to empty
Message = String.Empty;
// http://jai-on-asp.blogspot.com/2010/01/z3950-client-in-cnet-using-zoomnet-and.html
// http://www.indexdata.com/yaz/doc/tools.html#PQF
// http://www.loc.gov/z3950/agency/defns/bib1.html
// http://www.assembla.com/code/wasolic/subversion/nodes/ZOOM.NET
// http://lists.indexdata.dk/pipermail/yazlist/2007-June/002080.html
// http://fclaweb.fcla.edu/content/z3950-access-aleph
const string prefix = "@attrset Bib-1 @attr 1=12 ";
try
{
IConnection connection; // zoom db connector
IPrefixQuery query; // zoom query
IRecord record; // one zoom record
IResultSet records; // collection of records
// allocate MARC tools
MARC21_Exchange_Format_Parser parser = new MARC21_Exchange_Format_Parser();
// establish connection
connection = new Connection(Z3950_Server.URI, Convert.ToInt32(Z3950_Server.Port));
connection.DatabaseName = Z3950_Server.Database_Name;
// Any authentication here?
if (Z3950_Server.Username.Length > 0)
{
connection.Username = Z3950_Server.Username;
}
if (Z3950_Server.Password.Length > 0)
{
connection.Password = Z3950_Server.Password;
}
// Set to USMARC
connection.Syntax = RecordSyntax.USMARC;
// call the Z39.50 server
query = new PrefixQuery(prefix + Primary_Identifier);
records = connection.Search(query);
// If the record count is not one, return a message
if (records.Count != 1)
{
if (records.Count == 0)
{
Message = "ERROR: No matching record found in Z39.50 endpoint";
}
else
{
Message = "ERROR: More than one matching record found in Z39.50 endpoint by primary identifier";
}
return(null);
}
// capture the byte stream
record = records[0];
MemoryStream ms = new MemoryStream(record.Content);
// display while debugging
//MessageBox.Show(Encoding.UTF8.GetString(record.Content));
try
{
// feed the record to the parser and add the 955
MARC_Record marcrec = parser.Parse(ms, encoding);
parser.Close();
return(marcrec);
}
catch (Exception error)
{
Message = "ERROR: Unable to parse resulting record into the MARC Record structure!\n\n" + error.Message;
return(null);
//MessageBox.Show("Could not convert item " + Primary_Identifier + " to MARCXML.");
//Trace.WriteLine("Could not convert item " + Primary_Identifier + " to MARCXML.");
//Trace.WriteLine("Error details: " + error.Message);
}
}
catch (Exception error)
{
if (error.Message.IndexOf("The type initializer for 'Zoom.Net.Yaz") >= 0)
{
Message = "ERROR: The Z39.50 libraries did not correctly initialize.\n\nThese libraries do not currently work in 64-bit environments.";
}
else
{
Message = "ERROR: Unable to connect and search provided Z39.50 endpoint.\n\n" + error.Message;
}
return(null);
//MessageBox.Show("Could not convert item " + Primary_Identifier + " to MARCXML.");
//Trace.WriteLine("Could not convert item " + Primary_Identifier + " to MARCXML.");
//Trace.WriteLine("Error details: " + error.Message);
}
}
// Retrieves metadata from Z39.50 server
private void RetrieveMetadataByBarcodeZ39()
{
string z39Server = Settings.Z39ServerUrl;
int z39Port = Settings.Z39Port;
string z39Base = Settings.Z39Base;
string z39UserName = Settings.Z39UserName;
string z39Password = Settings.Z39Password;
Record_Character_Encoding z39Encoding = Settings.Z39Encoding;
int z39BarcodeField = Settings.Z39BarcodeField;
//validate
string errorText = "";
if (string.IsNullOrEmpty(z39Server))
{
errorText += "Z39.50 Server URL; ";
}
if (z39Port <= 0)
{
errorText += "Z39.50 Sever Port; ";
}
if (string.IsNullOrEmpty(z39Base))
{
errorText += "Z39.50 Databáze; ";
}
if (z39BarcodeField <= 0)
{
errorText += "Vyhledávací atribut";
}
if (!string.IsNullOrEmpty(errorText))
{
throw new ArgumentException("V nastaveních chybí následující údaje: " + errorText);
}
string errorMessage = "";
try
{
Z3950_Endpoint endpoint;
if (string.IsNullOrEmpty(z39UserName))
{
endpoint = new Z3950_Endpoint("Z39.50",
z39Server, (uint)z39Port, z39Base);
}
else
{
endpoint = new Z3950_Endpoint("Z39.50",
z39Server, (uint)z39Port, z39Base, z39UserName);
endpoint.Password = z39Password ?? "";
}
// Retrieve the record by primary identifier
MARC_Record record_from_z3950 = MARC_Record_Z3950_Retriever.Get_Record(
z39BarcodeField, this.barcode, endpoint, out errorMessage, z39Encoding);
if (record_from_z3950 != null)
{
Metadata metadata = new Metadata();
// Sysno
metadata.Sysno = record_from_z3950.Control_Number;
// Custom identifier
if (!string.IsNullOrWhiteSpace(metadata.Sysno))
{
metadata.Custom = Settings.Base + metadata.Sysno;
}
// Title
foreach (var field in Settings.MetadataTitleFields)
{
if (!record_from_z3950.has_Field(field.Key))
{
continue;
}
foreach (var subfield in field.Value)
{
metadata.Title += record_from_z3950.Get_Data_Subfield(field.Key, subfield).TrimEnd('/', ' ') + " ";
}
}
// Authors
string authors = "";
foreach (var field in Settings.MetadataAuthorFields)
{
if (!record_from_z3950.has_Field(field.Key))
{
continue;
}
List <MARC_Field> authorFields = record_from_z3950.Fields[field.Key];
foreach (var authorField in authorFields)
{
foreach (var subfield in field.Value)
{
MARC_Subfield authorSubfield = authorField.Subfields_By_Code(subfield).FirstOrDefault();
authors += authorSubfield == null ? "" : authorSubfield.Data;
authors += "@";
}
authors = authors.Trim() + "|";
}
}
metadata.Authors = ParseAuthors(authors, '@');
// Publish year
metadata.Year = GetZ39Subfields(record_from_z3950, Settings.MetadataPublishYearField.Item1,
Settings.MetadataPublishYearField.Item2);
// ISBN
metadata.ISBN = GetNormalizedISBN(GetZ39Subfields(record_from_z3950, Settings.MetadataIsbnField.Item1,
Settings.MetadataIsbnField.Item2));
if (metadata.ISBN.Contains('|'))
{
Warnings.Add("Záznam obsahuje více než 1 ISBN, vyberte správné, jsou oddělena zvislou čárou.");
}
// ISSN
metadata.ISSN = GetNormalizedISSN(GetZ39Subfields(record_from_z3950, Settings.MetadataIssnField.Item1,
Settings.MetadataIssnField.Item2));
if (metadata.ISSN.Contains('|'))
{
Warnings.Add("Záznam obsahuje více než 1 ISSN, vyberte správné, jsou oddělena zvislou čárou.");
}
// CNB
metadata.CNB = GetZ39Subfields(record_from_z3950, Settings.MetadataCnbField.Item1, Settings.MetadataCnbField.Item2);
if (metadata.CNB.Contains('|'))
{
Warnings.Add("Záznam obsahuje více než 1 ČNB, vyberte správné, jsou oddělena zvislou čárou.");
}
// OCLC
metadata.OCLC = GetZ39Subfields(record_from_z3950, Settings.MetadataOclcField.Item1, Settings.MetadataOclcField.Item2);
if (metadata.OCLC.Contains('|'))
{
Warnings.Add("Záznam obsahuje více než 1 OCLC, vyberte správné, jsou oddělena zvislou čárou.");
}
// EAN
string ean = "";
if (record_from_z3950.has_Field(Settings.MetadataEanField.Item1))
{
List <MARC_Field> eanFields = record_from_z3950.Fields[Settings.MetadataEanField.Item1];
foreach (var eanField in eanFields)
{
if (eanField.Indicator1 != Settings.MetadataEanField.Item3)
{
continue;
}
if (eanField.has_Subfield(Settings.MetadataEanField.Item2))
{
foreach (var eanSubfield in eanField.Subfields_By_Code(Settings.MetadataEanField.Item2))
{
ean += eanSubfield.Data + "|";
}
}
}
}
ean = ean.TrimEnd('|');
if (!string.IsNullOrWhiteSpace(ean))
{
metadata.EAN = ean;
if (metadata.EAN.Contains('|'))
{
this.Warnings.Add("Záznam obsahuje více než 1 EAN, vyberte správné, jsou oddělena zvislou čárou");
}
}
metadata.FixedFields = MarcGetFixedFields(record_from_z3950);
metadata.VariableFields = MarcGetVariableFields(record_from_z3950);
this.Metadata = metadata;
}
}
catch (Exception)
{
throw new Z39Exception("Nastala neočekávaná chyba během Z39.50 dotazu.");
}
// Display any error message encountered
if (this.Metadata == null)
{
if (errorMessage.Length > 0)
{
if (errorMessage.Contains("No matching record found in Z39.50 endpoint"))
{
errorMessage = "Nenalezen vhodný záznam.";
}
else if (errorMessage.Contains("Connection could not be made to"))
{
errorMessage = "Nebylo možné navázat spojení s " +
errorMessage.Substring(errorMessage.LastIndexOf(' '));
}
throw new Z39Exception(errorMessage);
}
else
{
throw new Z39Exception("Nastala neznámá chyba během Z39.50 dotazu");
}
}
}
