void
NodeManager::restore_nodes( const ArrayDatum& node_list )
{
Subnet* root = get_cwn();
const index gid_offset = size() - 1;
Token* first = node_list.begin();
const Token* end = node_list.end();
if ( first == end )
{
return;
}
// We need to know the first and hopefully smallest GID to identify
// if a parent is in or outside the range of restored nodes.
// So we retrieve it here, from the first element of the node_list, assuming
// that the node GIDs are in ascending order.
DictionaryDatum node_props = getValue< DictionaryDatum >( *first );
const index min_gid = ( *node_props )[ names::global_id ];
for ( Token* node_t = first; node_t != end; ++node_t )
{
DictionaryDatum node_props = getValue< DictionaryDatum >( *node_t );
std::string model_name = ( *node_props )[ names::model ];
index model_id = kernel().model_manager.get_model_id( model_name.c_str() );
index parent_gid = ( *node_props )[ names::parent ];
index local_parent_gid = parent_gid;
if ( parent_gid >= min_gid ) // if the parent is one of the restored nodes
{
local_parent_gid += gid_offset; // we must add the gid_offset
}
go_to( local_parent_gid );
index node_gid = add_node( model_id );
Node* node_ptr = get_node( node_gid );
// we call directly set_status on the node
// to bypass checking of unused dictionary items.
node_ptr->set_status_base( node_props );
}
current_ = root;
}
index AbstractLayer::create_layer(const DictionaryDatum & layer_dict)
{
index length = 0;
const char *layer_model_name = 0;
std::vector<long_t> element_ids;
std::string element_name;
Token element_model;
const Token& t = layer_dict->lookup(names::elements);
ArrayDatum* ad = dynamic_cast<ArrayDatum *>(t.datum());
if (ad) {
for (Token* tp = ad->begin(); tp != ad->end(); ++tp) {
element_name = std::string(*tp);
element_model = net_->get_modeldict().lookup(element_name);
if ( element_model.empty() )
throw UnknownModelName(element_name);
// Creates several nodes if the next element in
// the elements variable is a number.
if ((tp+1 != ad->end()) && dynamic_cast<IntegerDatum*>((tp+1)->datum())) {
// Select how many nodes that should be created.
const long_t number = getValue<long_t>(*(++tp));
for(long_t i=0;i<number;++i)
element_ids.push_back(static_cast<long>(element_model));
} else {
element_ids.push_back(static_cast<long>(element_model));
}
}
} else {
element_name = getValue<std::string>(layer_dict, names::elements);
element_model = net_->get_modeldict().lookup(element_name);
if ( element_model.empty() )
throw UnknownModelName(element_name);
element_ids.push_back(static_cast<long>(element_model));
}
if (layer_dict->known(names::positions)) {
if (layer_dict->known(names::rows) or layer_dict->known(names::columns) or layer_dict->known(names::layers))
throw BadProperty("Can not specify both positions and rows or columns.");
TokenArray positions = getValue<TokenArray>(layer_dict, names::positions);
if (positions.size() == 0) {
throw BadProperty("Empty positions array.");
}
std::vector<double_t> pos = getValue<std::vector<double_t> >(positions[0]);
if (pos.size() == 2)
layer_model_name = "topology_layer_free";
else if (pos.size() == 3)
layer_model_name = "topology_layer_free_3d";
else
throw BadProperty("Positions must have 2 or 3 coordinates.");
length = positions.size();
} else if (layer_dict->known(names::columns)) {
if (not layer_dict->known(names::rows)) {
throw BadProperty("Both columns and rows must be given.");
}
length=getValue<long_t>(layer_dict, names::columns) * getValue<long_t>(layer_dict, names::rows);
if (layer_dict->known(names::layers)) {
layer_model_name = "topology_layer_grid_3d";
length *= getValue<long_t>(layer_dict, names::layers);
} else {
layer_model_name = "topology_layer_grid";
}
} else {
throw BadProperty("Unknown layer type.");
}
assert(layer_model_name != 0);
Token layer_model = net_->get_modeldict().lookup(layer_model_name);
if ( layer_model.empty() )
throw UnknownModelName(layer_model_name);
index layer_node = net_->add_node(layer_model);
// Remember original subnet
const index cwnode = net_->get_cwn()->get_gid();
net_->go_to(layer_node);
// Create layer nodes.
for ( size_t i = 0 ; i < element_ids.size() ; ++i )
{
for ( index n = 0 ; n < length ; ++n )
{
net_->add_node(element_ids[i]);
}
}
// Return to original subnet
net_->go_to(cwnode);
//Set layer parameters according to input dictionary.
AbstractLayer *layer = dynamic_cast<AbstractLayer *>(net_->get_node(layer_node));
layer->depth_ = element_ids.size();
layer->set_status(layer_dict);
return layer_node;
}