diff --git a/main.cpp b/main.cpp
index 2d8959aa..31a3ed1b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,31 +3,8 @@
 
 
 int main(int argc, char *argv[]) {
-	PIVector<PIVector<double> > in;
-	in.resize(5);
-	for (int i = 0; i < in.size_s(); ++i)
-		for (int j = 0; j < 20; ++j)
-			in[i] << j+i*100;
-//	piCout << in.size() << in[0].size();
-	PIVector2D<double> f0;
-	PIVector2D<double> f1(30, 40);
-	//in.resize(1);
-	PIVector2D<double> f2(in);
-	f0 = f2;
-//	piCout << f0;
-//	piCout << f1;
-//	piCout << f2;
-//	piCout << f2.rows() << f2.cols() << f2.size_all() << f2.rows()*f2.cols();
-//	piCout << in;
-	piCout << f2;
-	f2.setRow(2, f2[2]);;
-	piCout << f2;
-//	piCout << f2.toVectors();
-//	PIVector<double> t = f2.toPlainVector();
-//	piCout << t;
-//	piCout << PIVector2D<double>(f2.rows(), f2.cols(), t);
-	return 0;
-
+	PIConnection conn;
+	conn.configureFromConfig("0.conf");
 	return 0;
 }
 
diff --git a/src_main/containers/pideque.h b/src_main/containers/pideque.h
index ba509674..2ad92d2e 100755
--- a/src_main/containers/pideque.h
+++ b/src_main/containers/pideque.h
@@ -181,6 +181,8 @@ public:
 	inline bool operator !=(const PIDeque<T> & t) const {if (pid_size != t.pid_size) return true; for (size_t i = 0; i < pid_size; ++i) if (t[i] != (*this)[i]) return true; return false;}
 	inline bool contains(const T & v) const {for (size_t i = pid_start; i < pid_start + pid_size; ++i) if (v == pid_data[i]) return true; return false;}
 	inline int etries(const T & v) const {int ec = 0; for (size_t i = pid_start; i < pid_start + pid_size; ++i) if (v == pid_data[i]) ++ec; return ec;}
+	inline ssize_t indexOf(const T & v) const {for (ssize_t i = pid_start; i < pid_start + pid_size; ++i) if (v == pid_data[i]) return i - pid_start; return -1;}
+	inline ssize_t lastIndexOf(const T & v) const {for (ssize_t i = pid_start + pid_size - 1; i >= pid_start; --i) if (v == pid_data[i]) return i - pid_start; return -1;}
 
 	inline T * data(size_t index = 0) {return &(pid_data[pid_start + index]);}
 	inline const T * data(size_t index = 0) const {return &(pid_data[pid_start + index]);}
diff --git a/src_main/containers/piset.h b/src_main/containers/piset.h
index 4c44015a..1877a84f 100644
--- a/src_main/containers/piset.h
+++ b/src_main/containers/piset.h
@@ -67,6 +67,19 @@ public:
 		//_CSet::_sort();
 	}
 
+	//! Contructs set from deque of elements
+	PISet(const PIDeque<T> & values) {
+		if (values.isEmpty()) return;
+		//_CSet::pim_content.resize(values.size_s());
+		//_CSet::pim_index.resize(values.size_s());
+		for (int i = 0; i < values.size_s(); ++i) {
+			//_CSet::pim_index[i].index = i;
+			//_CSet::pim_index[i].key = values[i];
+			_CSet::insert(values[i], 0);
+		}
+		//_CSet::_sort();
+	}
+
 	typedef T key_type;
 	
 	PISet<T> & operator <<(const T & t) {_CSet::insert(t, 0); return *this;}
@@ -92,11 +105,50 @@ public:
 		return *this;
 	}
 
+	//! Intersect set with "v"
+	PISet<T> & intersect(const PISet<T> & v) {
+		for (typename _CSet::iterator i = _CSet::begin(); i != _CSet::end(); ++i)
+			if (!v.contains(i.key())) {
+				_CSet::remove(i.key());
+				--i;
+			}
+		return *this;
+	}
+
+	//! Unite set with "v"
+	PISet<T> & operator +=(const PISet<T> & v) {return unite(v);}
+
+	//! Unite set with "v"
+	PISet<T> & operator |=(const PISet<T> & v) {return unite(v);}
+
+	//! Subtract set with "v"
+	PISet<T> & operator -=(const PISet<T> & v) {return subtract(v);}
+
+	//! Intersect set with "v"
+	PISet<T> & operator &=(const PISet<T> & v) {return intersect(v);}
+
 	//! Returns content of set as PIVector
 	PIVector<T> toVector() const {PIVector<T> ret; for (typename _CSet::const_iterator i = _CSet::begin(); i != _CSet::end(); ++i) ret << (*i).first; return ret;}
+
+	//! Returns content of set as PIDeque
+	PIDeque<T> toDeque() const {PIDeque<T> ret; for (typename _CSet::const_iterator i = _CSet::begin(); i != _CSet::end(); ++i) ret << (*i).first; return ret;}
+
 };
 
 
+//! \relatesalso PISet \brief Returns unite of two sets
+template <typename T> PISet<T> operator +(const PISet<T> & v0, const PISet<T> & v1) {PISet<T> ret(v0); ret.unite(v1); return ret;}
+
+//! \relatesalso PISet \brief Returns subtraction of two sets
+template <typename T> PISet<T> operator -(const PISet<T> & v0, const PISet<T> & v1) {PISet<T> ret(v0); ret.subtract(v1); return ret;}
+
+//! \relatesalso PISet \brief Returns unite of two sets
+template <typename T> PISet<T> operator |(const PISet<T> & v0, const PISet<T> & v1) {PISet<T> ret(v0); ret.unite(v1); return ret;}
+
+//! \relatesalso PISet \brief Returns intersetion of two sets
+template <typename T> PISet<T> operator &(const PISet<T> & v0, const PISet<T> & v1) {PISet<T> ret(v0); ret.intersect(v1); return ret;}
+
+
 template<typename Type>
 inline PICout operator <<(PICout s, const PISet<Type> & v) {
 	s.space();
diff --git a/src_main/io/piconnection.cpp b/src_main/io/piconnection.cpp
index f8689e14..8c0b035c 100755
--- a/src_main/io/piconnection.cpp
+++ b/src_main/io/piconnection.cpp
@@ -126,10 +126,20 @@ bool PIConnection::configure(PIConfig & conf, const PIString & name_) {
 					 cb(ce.getValue("channel").children()), sb(ce.getValue("sender").children());
 	PIStringList dev_list(ce.getValue("device").value());
 	PIStringList name_list(ce.getValue("device").name());
+	PIStringList flt_list(ce.getValue("filter").value());
 	piForeachC (PIConfig::Entry * e, db) {
 		dev_list << e->value();
 		name_list << e->name();
 	}
+	piForeachC (PIConfig::Entry * e, fb)
+		flt_list << e->name();
+	PISet<PIString> chk_set = (PISet<PIString>(name_list) & PISet<PIString>(flt_list));
+	//piCout << name_list << flt_list << chk_set;
+	chk_set.remove("");
+	if (!chk_set.isEmpty()) {
+		piCoutObj << "Error," << chk_set.toVector() << "names assigned to both devices and filters!";
+		return false;
+	}
 	PIMap<PIString, PIString> dev_aliases;
 	for (int i = 0; i < dev_list.size_s(); ++i) {
 		PIString fn(dev_list[i]);
@@ -138,10 +148,11 @@ bool PIConnection::configure(PIConfig & conf, const PIString & name_) {
 		PIIODevice::DeviceMode dm = PIIODevice::ReadWrite;
 		PIIODevice::splitFullPath(fn, &fn, &dm);
 		//piCout << fn;
+		//piCoutObj << "add" << fn << n;
 		PIIODevice * dev = addDevice(fn, dm);
 		if (!dev) continue;
 		dev_aliases[n] = fn;
-		device_names[n] = dev;
+		//device_names[n] = dev;
 		setDeviceName(dev, n);
 		dev->setName(name_ + ".device." + dev_list[i]);
 		PIConfig::Entry de = ce.getValue("device." + n);
@@ -267,8 +278,11 @@ PIString PIConnection::makeConfig() const {
 		if (f.second == 0) continue;
 		if (f.second->extractor == 0) continue;
 		PIString prefix = "filter." + f.first;
-		for (int i = 0; i < f.second->devices.size_s(); ++i)
-			ret << prefix << ".device." << i << " = " << device_names.key(f.second->devices[i]) << " #s\n";
+		for (int i = 0; i < f.second->devices.size_s(); ++i) {
+			PIString dname = device_names.key(f.second->devices[i]);
+			if (dname.isEmpty()) dname = devPath(f.second->devices[i]);
+			ret << prefix << ".device." << i << " = " << dname << " #s\n";
+		}
 		PIDiagnostics * diag = diags_.value(f.second->extractor, 0);
 		ret << prefix << ".bufferSize = " << f.second->extractor->bufferSize() << " #n\n";
 		if (diag != 0)
@@ -293,15 +307,22 @@ PIString PIConnection::makeConfig() const {
 	piForeachC (CPair & c, channels_) {
 		piForeachC (PIIODevice * d, c.second) {
 			PIString prefix = "channel." + PIString::fromNumber(dn); ++dn;
-			ret << prefix << ".from = " << devPath(c.first) << " #s\n";
-			ret << prefix << ".to = " << devPath(d) << " #s\n";
+			PIString dname = device_names.key(c.first);
+			if (dname.isEmpty()) dname = devPath(c.first);
+			ret << prefix << ".from = " << dname << " #s\n";
+			dname = device_names.key(const_cast<PIIODevice *>(d));
+			if (dname.isEmpty()) dname = devPath(d);
+			ret << prefix << ".to = " << dname << " #s\n";
 		}
 	}
 	piForeachC (SPair & s, senders) {
 		if (s.second == 0) continue;
 		PIString prefix = "sender." + s.second->name();
-		for (int i = 0; i < s.second->devices.size_s(); ++i)
-			ret << prefix << ".device." << i << " = " << devPath(s.second->devices[i]) << " #s\n";
+		for (int i = 0; i < s.second->devices.size_s(); ++i) {
+			PIString dname = device_names.key(s.second->devices[i]);
+			if (dname.isEmpty()) dname = devPath(s.second->devices[i]);
+			ret << prefix << ".device." << i << " = " << dname << " #s\n";
+		}
 		double int_ = s.second->int_;
 		if (int_ > 0.)
 			ret << prefix << ".frequency = " << (1000. / int_) << " #f\n";
@@ -333,7 +354,14 @@ PIIODevice * PIConnection::addDevice(const PIString & full_path, PIIODevice::Dev
 }
 
 
-PIStringList PIConnection::deviceNames(const PIIODevice *dev) const {
+void PIConnection::setDeviceName(PIIODevice * dev, const PIString & name) {
+	if (!dev) return;
+	device_names[name] = dev;
+	//dev->setProperty();
+}
+
+
+PIStringList PIConnection::deviceNames(const PIIODevice * dev) const {
 	PIStringList ret;
 	piForeachC (DNPair & s, device_names)
 		if (s.second == dev)
@@ -423,17 +451,15 @@ PIVector<PIIODevice * > PIConnection::boundedDevices() const {
 
 
 PIPacketExtractor * PIConnection::addFilter(const PIString & name_, const PIString & full_path, PIPacketExtractor::SplitMode mode) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
 	PIString fname_ = name_.trimmed();
 	Extractor * e = extractors.value(fname_);
 	if (full_path.isEmpty()) return (e == 0 ? 0 : e->extractor);
-	PIIODevice * dev = deviceByName(fp);
-	if (!dev) dev = deviceByFullPath(fp);
+	PIIODevice * dev = devByString(full_path);
 	PIPacketExtractor * pe(0);
 	if (extractors.value(full_path) != 0) pe = extractors.value(full_path)->extractor;
 	if (pe != 0) dev = pe;
 	if (dev == 0) {
-		piCoutObj << "\"addFilter\" error: no such device \"" << full_path << "\"!";
+		piCoutObj << "\"addFilter\" error: no such device or filter \"" << full_path << "\"!";
 		return 0;
 	}
 	if (e == 0) {
@@ -467,15 +493,14 @@ PIPacketExtractor * PIConnection::addFilter(const PIString & name_, const PIStri
 
 
 PIPacketExtractor * PIConnection::addFilter(PIPacketExtractor * filter, const PIString & full_path) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
 	Extractor * e = 0;
 	if (full_path.isEmpty()) return (e == 0 ? 0 : e->extractor);
-	PIIODevice * dev = deviceByFullPath(fp);
+	PIIODevice * dev = devByString(full_path);
 	PIPacketExtractor * pe(0);
 	if (extractors.value(full_path) != 0) pe = extractors.value(full_path)->extractor;
 	if (pe != 0) dev = pe;
 	if (dev == 0) {
-		piCoutObj << "\"addFilter\" error: no such device \"" << full_path << "\"!";
+		piCoutObj << "\"addFilter\" error: no such device or filter \"" << full_path << "\"!";
 		return 0;
 	}
 	if (e == 0) {
@@ -505,12 +530,17 @@ PIPacketExtractor * PIConnection::addFilter(PIPacketExtractor * filter, const PI
 
 
 bool PIConnection::removeFilter(const PIString & name_, const PIString & full_path) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
+	return removeFilter(name_, devByString(full_path));
+}
+
+
+bool PIConnection::removeFilter(const PIString & name_, const PIIODevice * dev) {
+	if (dev == 0) return false;
 	Extractor * p = extractors.value(name_.trimmed());
 	if (p == 0) return false;
 	bool ret = false;
 	for (int i = 0; i < p->devices.size_s(); ++i) {
-		if (devFPath(p->devices[i]) == fp || devFPath(p->devices[i]) == full_path) {
+		if (p->devices[i] == dev) {
 			bounded_extractors[p->devices[i]].removeAll(p->extractor);
 			p->devices.remove(i);
 			--i;
@@ -525,12 +555,6 @@ bool PIConnection::removeFilter(const PIString & name_, const PIString & full_pa
 }
 
 
-bool PIConnection::removeFilter(const PIString & name, const PIIODevice * dev) {
-	if (dev == 0) return false;
-	return removeFilter(name, devFPath(dev));
-}
-
-
 bool PIConnection::removeFilter(const PIString & name_) {
 	Extractor * p = extractors.value(name_.trimmed());
 	if (p == 0) return false;
@@ -597,9 +621,7 @@ PIVector<PIIODevice * > PIConnection::filterBoundedDevices(const PIString & name
 bool PIConnection::addChannel(const PIString & name0, const PIString & name1) {
 	//piCout << "addChannel" << name0 << name1;
 	if (name0.isEmpty() || name1.isEmpty()) return false;
-	PIIODevice * dev0 = deviceByName(name0), * dev1 = deviceByName(name1);
-	if (!dev0) dev0 = deviceByFullPath(name0);
-	if (!dev1) dev1 = deviceByFullPath(name1);
+	PIIODevice * dev0 = devByString(name0), * dev1 = devByString(name1);
 	PIPacketExtractor * pe0(0), * pe1(0);
 	if (extractors.value(name0) != 0) pe0 = extractors.value(name0)->extractor;
 	if (extractors.value(name1) != 0) pe1 = extractors.value(name1)->extractor;
@@ -617,7 +639,7 @@ bool PIConnection::addChannel(const PIString & name0, const PIString & name1) {
 
 
 bool PIConnection::removeChannel(const PIString & name0, const PIString & name1) {
-	PIIODevice * dev0 = deviceByFullPath(name0), * dev1 = deviceByFullPath(name1);
+	PIIODevice * dev0 = devByString(name0), * dev1 = devByString(name1);
 	PIPacketExtractor * pe0(0), * pe1(0);
 	if (extractors.value(name0) != 0) pe0 = extractors.value(name0)->extractor;
 	if (extractors.value(name1) != 0) pe1 = extractors.value(name1)->extractor;
@@ -630,7 +652,7 @@ bool PIConnection::removeChannel(const PIString & name0, const PIString & name1)
 
 
 bool PIConnection::removeChannel(const PIString & name0) {
-	PIIODevice * dev0 = deviceByFullPath(name0);
+	PIIODevice * dev0 = devByString(name0);
 	PIPacketExtractor * pe0(0);
 	if (extractors.value(name0) != 0) pe0 = extractors.value(name0)->extractor;
 	if (pe0 != 0) dev0 = pe0;
@@ -661,6 +683,14 @@ PIString PIConnection::devFPath(const PIIODevice * d) const {
 }
 
 
+PIIODevice * PIConnection::devByString(const PIString & s) const {
+	if (s.isEmpty()) return 0;
+	PIIODevice * ret = deviceByName(s);
+	if (!ret) ret = deviceByFullPath(s);
+	return ret;
+}
+
+
 PIVector<PIPair<PIString, PIString > > PIConnection::channels() const {
 	PIVector<PIPair<PIString, PIString > > ret;
 	piForeachC (CPair & i, channels_) {
@@ -672,20 +702,19 @@ PIVector<PIPair<PIString, PIString > > PIConnection::channels() const {
 }
 
 
-void PIConnection::addSender(const PIString & name_, const PIString & full_path, float frequency, bool start_) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
+void PIConnection::addSender(const PIString & name_, const PIString & full_path_name, float frequency, bool start_) {
 	PIString fname_ = name_.trimmed();
-	if (fp.isEmpty() || frequency <= 0.) return;
+	if (full_path_name.isEmpty() || frequency <= 0.) return;
 	Sender * s = senders.value(fname_);
-	PIIODevice * dev = deviceByFullPath(fp);
 	if (s == 0) {
 		s = new Sender(this);
 		s->setName(fname_);
 		s->int_ = 1000. / frequency;
 		senders[fname_] = s;
 	}
+	PIIODevice * dev = devByString(full_path_name);
 	if (dev == 0) {
-		piCoutObj << "\"addSender\" error: no such device \"" << full_path << "\"!";
+		piCoutObj << "\"addSender\" error: no such device \"" << full_path_name << "\"!";
 		return;
 	}
 	if (!s->isRunning() && start_) {
@@ -699,10 +728,9 @@ void PIConnection::addSender(const PIString & name_, const PIString & full_path,
 }
 
 
-bool PIConnection::removeSender(const PIString & name, const PIString & full_path) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
+bool PIConnection::removeSender(const PIString & name, const PIString & full_path_name) {
 	Sender * s = senders.value(name, 0);
-	PIIODevice * d = deviceByFullPath(fp);
+	PIIODevice * d = devByString(full_path_name);
 	if (s == 0 || d == 0) return false;
 	s->lock();
 	bool ret = s->devices.contains(d);
@@ -766,9 +794,8 @@ void PIConnection::removeAllSenders() {
 }
 
 
-void PIConnection::startThreadedRead(const PIString & full_path) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
-	DevicePool::DeviceData * dd = __device_pool__->devices.value(fp, 0);
+void PIConnection::startThreadedRead(const PIString & full_path_name) {
+	DevicePool::DeviceData * dd = __device_pool__->deviceData(devByString(full_path_name));
 	if (dd == 0) return;
 	if (dd->dev == 0) return;
 	if (dd->started || dd->dev->mode() == PIIODevice::WriteOnly) return;
@@ -800,9 +827,8 @@ void PIConnection::startAllSenders() {
 }
 
 
-void PIConnection::stopThreadedRead(const PIString & full_path) {
-	PIString fp(PIIODevice::normalizeFullPath(full_path));
-	DevicePool::DeviceData * dd = __device_pool__->devices.value(fp, 0);
+void PIConnection::stopThreadedRead(const PIString & full_path_name) {
+	DevicePool::DeviceData * dd = __device_pool__->deviceData(devByString(full_path_name));
 	if (dd == 0) return;
 	if (dd->dev == 0) return;
 	if (!dd->started || dd->dev->mode() == PIIODevice::WriteOnly) return;
@@ -834,8 +860,7 @@ void PIConnection::stopAllSenders() {
 
 
 PIDiagnostics * PIConnection::diagnostic(const PIString & full_path_name) const {
-	PIIODevice * dev = deviceByFullPath(full_path_name);
-	if (dev == 0) dev = device_names.value(full_path_name, 0);
+	PIIODevice * dev = devByString(full_path_name);
 	PIPacketExtractor * pe(0);
 	if (extractors.value(full_path_name) != 0) pe = extractors.value(full_path_name)->extractor;
 	if (pe != 0) dev = pe;
@@ -1004,6 +1029,16 @@ PIIODevice * PIConnection::DevicePool::device(const PIString & fp) const {
 }
 
 
+PIConnection::DevicePool::DeviceData * PIConnection::DevicePool::deviceData(PIIODevice * d) const {
+	if (!d) return 0;
+	piForeachC (DDPair & i, devices) {
+		if (i.second->dev == d)
+			return i.second;
+	}
+	return 0;
+}
+
+
 PIVector<PIConnection * > PIConnection::DevicePool::boundedConnections() const {
 	PIVector<PIConnection * > ret;
 	piForeachC (DDPair & i, devices) {
diff --git a/src_main/io/piconnection.h b/src_main/io/piconnection.h
index b615e3a7..b7d3e592 100755
--- a/src_main/io/piconnection.h
+++ b/src_main/io/piconnection.h
@@ -62,7 +62,7 @@ public:
 	 * or \a startAllThreadedReads(). By default, read thread doesn`t start */
 	PIIODevice * addDevice(const PIString & full_path, PIIODevice::DeviceMode mode = PIIODevice::ReadWrite, bool start = false);
 	
-	void setDeviceName(PIIODevice * dev, const PIString & name) {device_names[name] = dev;}
+	void setDeviceName(PIIODevice * dev, const PIString & name);
 	
 	PIStringList deviceNames(const PIIODevice * dev) const;
 	
@@ -130,7 +130,7 @@ public:
 	
 	
 	/*! \brief Add to connection channel from "name_from" to "name_to"
-	 * \details "name_from" and "name_to" can be full pathes of devices or filter names.
+	 * \details "name_from" and "name_to" can be full pathes of devices or device names or filter names.
 	 * Returns \b false if there if no such device or filter, else create channel and returns \b true */
 	bool addChannel(const PIString & name_from, const PIString & name_to);
 	
@@ -179,14 +179,14 @@ public:
 	 * If "start" is true, sender is started immediately. Else, you can start sender with
 	 * functions \a startSender()
 	 * \n \b Attention! "frequency" is actual olny if new sender was created! */
-	void addSender(const PIString & name, const PIString & full_path, float frequency, bool start = false);
+	void addSender(const PIString & name, const PIString & full_path_name, float frequency, bool start = false);
 	
 	//! Add to connection sender with name "name" device "dev"
 	void addSender(const PIString & name, const PIIODevice * dev, float frequency, bool start = false) {addSender(name, devFPath(dev), frequency, start);}
 	
 	/*! \brief Remove from sender with name "name" device with full path "full_path_name"
 	 * \details If there is no devices bounded to this sender, it will be removed. Returns if sender was removed */
-	bool removeSender(const PIString & name, const PIString & full_path);
+	bool removeSender(const PIString & name, const PIString & full_path_name);
 	
 	//! Remove from sender with name "name" device "dev"
 	bool removeSender(const PIString & name, const PIIODevice * dev) {return removeSender(name, devFPath(dev));}
@@ -211,7 +211,7 @@ public:
 	
 	
 	//! Start read thread of device with full path "full_path"
-	void startThreadedRead(const PIString & full_path);
+	void startThreadedRead(const PIString & full_path_name);
 	
 	//! Start read thread of device "dev"
 	void startThreadedRead(const PIIODevice * dev) {startThreadedRead(devFPath(dev));}
@@ -229,7 +229,7 @@ public:
 	void start() {startAllThreadedReads(); startAllSenders();}
 	
 	//! Stop read thread of device with full path "full_path"
-	void stopThreadedRead(const PIString & full_path);
+	void stopThreadedRead(const PIString & full_path_name);
 	
 	//! Stop read thread of device "dev"
 	void stopThreadedRead(const PIIODevice * dev) {stopThreadedRead(devFPath(dev));}
@@ -286,6 +286,8 @@ public:
 		PIOBJECT_SUBCLASS(DevicePool, PIThread)
 		friend void __DevicePool_threadReadDP(void * ddp);
 		friend class PIConnection;
+	protected:
+		struct DeviceData;
 	public:
 		DevicePool();
 		
@@ -294,6 +296,7 @@ public:
 		bool removeDevice(PIConnection * parent, const PIString & fp);
 		void unboundConnection(PIConnection * parent);
 		PIIODevice * device(const PIString & fp) const;
+		DeviceData * deviceData(PIIODevice * d) const;
 		PIVector<PIConnection * > boundedConnections() const;
 		PIVector<PIIODevice * > boundedDevices() const;
 		PIVector<PIIODevice * > boundedDevices(const PIConnection * parent) const;
@@ -367,6 +370,7 @@ private:
 	
 	PIString devPath(const PIIODevice * d) const;
 	PIString devFPath(const PIIODevice * d) const;
+	PIIODevice * devByString(const PIString & s) const;
 	
 	struct Extractor {
 		Extractor(): extractor(0) {}