/// <summary> DEMO 1 : Read a MARC DAT file completely using the IEnumerator interface. and adding it to a MarcXML output file </summary>
private static void demo1()
{
Console.WriteLine("Performing demo1");
// Create the marc21 exchange reader
MARC21_Exchange_Format_Parser parser1 = new MARC21_Exchange_Format_Parser("AgricNewCat02.dat");
// Create the marc xml writer
MARCXML_Writer writer1 = new MARCXML_Writer("AgricNewCat02.xml");
try
{
// Step through each record from the Marc21 dat file and output to the XML file
foreach (MARC_Record thisRecord in parser1)
{
writer1.AppendRecord(thisRecord);
}
}
catch (Exception ee)
{
Console.WriteLine(ee.StackTrace);
}
finally
{
// Close all the streams
parser1.Close();
writer1.Close();
}
}
// 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);
}