/// <summary> Create a copy of this object </summary>
/// <returns> Copy of this object with all the same data </returns>
public Z3950_Endpoint Copy()
{
Z3950_Endpoint copyPoint = new Z3950_Endpoint(Name, URI, Port, Database_Name, Username);
copyPoint.Password = Password;
copyPoint.Save_Password_Flag = Save_Password_Flag;
return(copyPoint);
}
/// <summary> Gets a MARC record from a Z39.50 server, by performaing a search </summary>
/// <param name="Attribute_Number"> Z39.50 attribute number which indicates against which metadata field search should occur </param>
/// <param name="Search_Term"> Term to search for within the attribute number </param>
/// <param name="Z3950_Server"> Z39.50 server endpoint information </param>
/// <param name="Message"> Return message from the server </param>
/// <returns> MARC record, if retrievable by search </returns>
public static MARC_Record Get_Record(int Attribute_Number, string Search_Term, Z3950_Endpoint Z3950_Server, out string Message)
{
// 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
string prefix = "@attrset Bib-1 @attr 1=" + Attribute_Number + " ";
try
{
// allocate MARC tools
MARC21_Exchange_Format_Parser parser = new MARC21_Exchange_Format_Parser();
// establish connection
IConnection 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
IPrefixQuery query = new PrefixQuery(prefix + Search_Term);
IResultSet records = connection.Search(query);
// If the record count is not one, return a message
if (records.Count != 1)
{
Message = records.Count == 0 ? "ERROR: No matching record found in Z39.50 endpoint" : "ERROR: More than one matching record found in Z39.50 endpoint by ISBN";
return null;
}
// capture the byte stream
IRecord 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);
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);
}
}
/// <summary> Create a copy of this object </summary>
/// <returns> Copy of this object with all the same data </returns>
public Z3950_Endpoint Copy()
{
Z3950_Endpoint copyPoint = new Z3950_Endpoint(Name, URI, Port, Database_Name, Username);
copyPoint.Password = Password;
copyPoint.Save_Password_Flag = Save_Password_Flag;
return copyPoint;
}
public static MARC_Record Get_Record_By_Primary_Identifier(string Primary_Identifier, Z3950_Endpoint Z3950_Server, out string Message)
{
// 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);
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);
}
}
