public void Connect()
{
Yaz.ZOOM_connection_connect(ZConnection, _host, _port);
var errorCode = Yaz.ZOOM_connection_errcode(ZConnection);
CheckErrorCodeAndThrow(errorCode);
_connected = true;
}
public ScanTerm this[uint index]
{
get
{
int occ, length;
var term = Yaz.ZOOM_scanset_term(_scanSet, index, out occ, out length);
return(new ScanTerm(term, occ));
}
}
void IDisposable.Dispose()
{
if (IntPtr.Zero != _package)
{
Yaz.ZOOM_package_destroy(_package);
_connection = null;
_package = IntPtr.Zero;
}
}
public Package Package(string type)
{
EnsureConnected();
var options = Yaz.ZOOM_options_create();
var yazPackage = Yaz.ZOOM_connection_package(ZConnection, options);
var pack = new Package(yazPackage, this, type);
return(pack);
}
public void Dispose()
{
if (!_disposed)
{
Yaz.ZOOM_scanset_destroy(_scanSet);
_connection = null;
_scanSet = IntPtr.Zero;
_disposed = true;
}
}
public void Dispose()
{
if (!_disposed)
{
Yaz.ZOOM_connection_destroy(ZConnection);
//Yaz.yaz_log(Yaz.LogLevel.LOG, "Connection Disposed");
ZConnection = IntPtr.Zero;
_disposed = true;
}
}
public Record this[uint index]
{
get
{
if (_records[index] == null)
{
var record = Yaz.ZOOM_resultset_record(_resultSet, index);
_records[index] = new Record(record, this);
}
return(_records[index]);
}
}
internal ResultSet(IntPtr resultSet, Connection connection)
{
_resultSet = resultSet;
_size = Yaz.ZOOM_resultset_size(_resultSet);
if (0 == _size)
{
Console.Out.WriteLine("Yaz.ZOOM_resultset_size zero");
}
_records = new Record[_size];
}
void IDisposable.Dispose()
{
if (!_disposed)
{
foreach (Record record in _records)
{
record.Dispose();
}
Yaz.ZOOM_resultset_destroy(_resultSet);
_resultSet = IntPtr.Zero;
_disposed = true;
}
}
public Connection(string host, int port)
{
_host = host;
_port = port;
_options = new ConnectionOptionsCollection();
_options["mediumSetElementSetName"] = "F";
ZConnection = Yaz.ZOOM_connection_create(_options.ZoomOptions);
Yaz.ZOOM_connection_option_setl(ZConnection, "mediumSetElementSetName", "F", 1);
var errorCode = Yaz.ZOOM_connection_errcode(ZConnection);
CheckErrorCodeAndThrow(errorCode);
}
public ScanSet Scan(IQuery query)
{
EnsureConnected();
var yazScanSet = Yaz.ZOOM_connection_scan(ZConnection, query.QueryString);
var errorCode = Yaz.ZOOM_connection_errcode(ZConnection);
if (errorCode != Yaz.ZoomErrorNone)
{
Yaz.ZOOM_scanset_destroy(yazScanSet);
}
CheckErrorCodeAndThrow(errorCode);
var scanSet = new ScanSet(yazScanSet, this);
return(scanSet);
}
public ResultSet Search(IQuery query)
{
EnsureConnected();
var yazQuery = Yaz.ZOOM_query_create();
ResultSet resultSet;
try
{
// branching out to right YAZ-C call
if (query is CQLQuery)
{
Yaz.ZOOM_query_cql(yazQuery, query.QueryString);
}
else if (query is PrefixQuery)
{
Yaz.ZOOM_query_prefix(yazQuery, query.QueryString);
}
else
{
throw new NotImplementedException();
}
var yazResultSet = Yaz.ZOOM_connection_search(ZConnection, yazQuery);
Yaz.ZOOM_resultset_option_set(yazResultSet, "elementSetName", "F");
// error checking C-style
var errorCode = Yaz.ZOOM_connection_errcode(ZConnection);
if (errorCode != Yaz.ZoomErrorNone)
{
Yaz.ZOOM_resultset_destroy(yazResultSet);
}
CheckErrorCodeAndThrow(errorCode);
resultSet = new ResultSet(yazResultSet, this);
}
finally
{
Yaz.ZOOM_query_destroy(yazQuery);
}
return(resultSet);
}
private void CheckErrorCodeAndThrow(int errorCode)
{
string message;
switch (errorCode)
{
case Yaz.ZoomErrorNone:
break;
case Yaz.ZoomErrorConnect:
message = $"Connection could not be made to {_host}:{_port}";
throw new Exception(message);
case Yaz.ZoomErrorInvalidQuery:
message = "The query requested is not valid or not supported";
throw new Exception(message);
case Yaz.ZoomErrorInit:
message = string.Format("Server {0}:{1} rejected our init request", _host, _port);
throw new Exception(message);
case Yaz.ZoomErrorTimeout:
message = string.Format("Server {0}:{1} timed out handling our request", _host, _port);
throw new Exception(message);
case Yaz.ZoomErrorMemory:
case Yaz.ZoomErrorEncode:
case Yaz.ZoomErrorDecode:
case Yaz.ZoomErrorConnectionLost:
case Yaz.ZoomErrorInternal:
case Yaz.ZoomErrorUnsupportedProtocol:
case Yaz.ZoomErrorUnsupportedQuery:
message = Yaz.ZOOM_connection_errmsg(ZConnection);
throw new Exception("A fatal error occurred in Yaz: " + errorCode + " - " +
message);
default:
throw new Exception("未经处理的异常");
}
}
void Send()
{
Yaz.ZOOM_package_send(_package, _type);
}
internal ConnectionOptionsCollection()
{
ZoomOptions = Yaz.ZOOM_options_create();
}
public string this[string key]
{
get { return(Yaz.ZOOM_options_get(ZoomOptions, key)); }
set { Yaz.ZOOM_options_set(ZoomOptions, key, value); }
}
internal IntPtr CreateConnection()
{
return(Yaz.ZOOM_connection_create(ZoomOptions));
}
public void Dispose()
{
Yaz.ZOOM_options_destroy(ZoomOptions);
ZoomOptions = IntPtr.Zero;
}
public string this[string key]
{
get { return(Yaz.ZOOM_package_option_get(Package, key)); }
set { Yaz.ZOOM_package_option_set(Package, key, value); }
}
public string this[string key]
{
get { return(Yaz.ZOOM_resultset_option_get(ResultSet, key)); }
set { Yaz.ZOOM_resultset_option_set(ResultSet, key, value); }
}
