Skip to content
Snippets Groups Projects
ipaaca-internal.cc 20.1 KiB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545
/*
 * This file is part of IPAACA, the
 *  "Incremental Processing Architecture
 *   for Artificial Conversational Agents".
 *
 * Copyright (c) 2009-2015 Social Cognitive Systems Group
 *                         (formerly the Sociable Agents Group)
 *                         CITEC, Bielefeld University
 *
 * http://opensource.cit-ec.de/projects/ipaaca/
 * http://purl.org/net/ipaaca
 *
 * This file may be licensed under the terms of of the
 * GNU Lesser General Public License Version 3 (the ``LGPL''),
 * or (at your option) any later version.
 *
 * Software distributed under the License is distributed
 * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
 * express or implied. See the LGPL for the specific language
 * governing rights and limitations.
 *
 * You should have received a copy of the LGPL along with this
 * program. If not, go to http://www.gnu.org/licenses/lgpl.html
 * or write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The development of this software was supported by the
 * Excellence Cluster EXC 277 Cognitive Interaction Technology.
 * The Excellence Cluster EXC 277 is a grant of the Deutsche
 * Forschungsgemeinschaft (DFG) in the context of the German
 * Excellence Initiative.
 */

#include <ipaaca/ipaaca.h>

namespace ipaaca {

using namespace rsb;
using namespace rsb::filter;
using namespace rsb::converter;
using namespace rsb::patterns;

// static library Initializer
IPAACA_EXPORT bool Initializer::_initialized = false;
IPAACA_EXPORT bool Initializer::initialized() { return _initialized; }
IPAACA_EXPORT void Initializer::initialize_ipaaca_rsb_if_needed()//{{{
{
	if (_initialized) return;

	//IPAACA_INFO("Calling initialize_updated_default_config()")
	initialize_updated_default_config();

	// RYT FIXME This configuration stuff has been simply removed in rsb!
	//ParticipantConfig config = ParticipantConfig::fromConfiguration();
	//getFactory().setDefaultParticipantConfig(config);

	//IPAACA_INFO("Creating and registering Converters")
	boost::shared_ptr<IUConverter> iu_converter(new IUConverter());
	converterRepository<std::string>()->registerConverter(iu_converter);

	boost::shared_ptr<MessageConverter> message_converter(new MessageConverter());
	converterRepository<std::string>()->registerConverter(message_converter);

	boost::shared_ptr<IUPayloadUpdateConverter> payload_update_converter(new IUPayloadUpdateConverter());
	converterRepository<std::string>()->registerConverter(payload_update_converter);

	boost::shared_ptr<IULinkUpdateConverter> link_update_converter(new IULinkUpdateConverter());
	converterRepository<std::string>()->registerConverter(link_update_converter);

	boost::shared_ptr<ProtocolBufferConverter<protobuf::IUCommission> > iu_commission_converter(new ProtocolBufferConverter<protobuf::IUCommission> ());
	converterRepository<std::string>()->registerConverter(iu_commission_converter);

	// dlw
	boost::shared_ptr<ProtocolBufferConverter<protobuf::IUResendRequest> > iu_resendrequest_converter(new ProtocolBufferConverter<protobuf::IUResendRequest> ());
	converterRepository<std::string>()->registerConverter(iu_resendrequest_converter);

	boost::shared_ptr<ProtocolBufferConverter<protobuf::IURetraction> > iu_retraction_converter(new ProtocolBufferConverter<protobuf::IURetraction> ());
	converterRepository<std::string>()->registerConverter(iu_retraction_converter);

	boost::shared_ptr<IntConverter> int_converter(new IntConverter());
	converterRepository<std::string>()->registerConverter(int_converter);

	//IPAACA_INFO("Initialization complete.")
	_initialized = true;
	//IPAACA_TODO("initialize all converters")
}//}}}
IPAACA_EXPORT void Initializer::dump_current_default_config()//{{{
{
	IPAACA_INFO("--- Dumping current default participant configuration ---")
	rsb::ParticipantConfig config = getFactory().getDefaultParticipantConfig();
	std::set<rsb::ParticipantConfig::Transport> transports = config.getTransports();
	for (std::set<rsb::ParticipantConfig::Transport>::const_iterator it=transports.begin(); it!=transports.end(); ++it) {
		IPAACA_INFO( "Active transport: " << it->getName() )
	}
	IPAACA_INFO("--- End of configuration dump ---")
	//ParticipantConfig::Transport inprocess = config.getTransport("inprocess");
	//inprocess.setEnabled(true);
	//config.addTransport(inprocess);
}//}}}
IPAACA_EXPORT void Initializer::initialize_updated_default_config()//{{{
{
	// quick hack to iterate through the pwd parents
	// and find the closest rsb plugin dir
	//
	// but only if not yet defined
	const char* plugin_path = getenv("RSB_PLUGINS_CPP_PATH");
	if (!plugin_path) {
#ifdef WIN32
		LOG_IPAACA_CONSOLE("WARNING: RSB_PLUGINS_CPP_PATH not set - in Windows it has to be specified.")
		//throw NotImplementedError();
#else
		LOG_IPAACA_CONSOLE("RSB_PLUGINS_CPP_PATH not set; looking here and up to 7 dirs up.")
		std::string pathstr = "./";
		for (int i=0; i<   8 /* depth EIGHT (totally arbitrary..) */  ; i++) {
			std::string where_str = pathstr+"deps/lib/rsb*/plugins";
			const char* where = where_str.c_str();
			glob_t g;
			glob(where, 0, NULL, &g);
			if (g.gl_pathc>0) {
				const char* found_path = g.gl_pathv[0];
				LOG_IPAACA_CONSOLE("Found an RSB plugin dir which will be used automatically: " << found_path)
				setenv("RSB_PLUGINS_CPP_PATH", found_path, 1);
				break;
			} // else keep going
			globfree(&g);
			pathstr += "../";
		}
#endif
	} else {
		LOG_IPAACA_CONSOLE("RSB_PLUGINS_CPP_PATH already defined: " << plugin_path)
	}
}//}}}

// RSB backend Converters
// IUConverter//{{{

IPAACA_EXPORT IUConverter::IUConverter()
: Converter<std::string> (IPAACA_SYSTEM_DEPENDENT_CLASS_NAME("ipaaca::IU"), "ipaaca-iu", true)
{
}

IPAACA_EXPORT std::string IUConverter::serialize(const AnnotatedData& data, std::string& wire)
{
	//std::cout << "serialize" << std::endl;
	// Ensure that DATA actually holds a datum of the data-type we expect.
	assert(data.first == getDataType()); // "ipaaca::IU"
	// NOTE: a dynamic_pointer_cast cannot be used from void*
	boost::shared_ptr<const IU> obj = boost::static_pointer_cast<const IU> (data.second);
	boost::shared_ptr<protobuf::IU> pbo(new protobuf::IU());
	// transfer obj data to pbo
	pbo->set_uid(obj->uid());
	pbo->set_revision(obj->revision());
	pbo->set_category(obj->category());
	pbo->set_payload_type(obj->payload_type());
	pbo->set_owner_name(obj->owner_name());
	pbo->set_committed(obj->committed());
	ipaaca::protobuf::IU_AccessMode a_m;
	switch(obj->access_mode()) {
		case IU_ACCESS_PUSH:
			a_m = ipaaca::protobuf::IU_AccessMode_PUSH;
			break;
		case IU_ACCESS_REMOTE:
			a_m = ipaaca::protobuf::IU_AccessMode_REMOTE;
			break;
		case IU_ACCESS_MESSAGE:
			a_m = ipaaca::protobuf::IU_AccessMode_MESSAGE;
			break;
	}
	pbo->set_access_mode(a_m);
	pbo->set_read_only(obj->read_only());
	for (std::map<std::string, std::string>::const_iterator it=obj->_payload._store.begin(); it!=obj->_payload._store.end(); ++it) {
		protobuf::PayloadItem* item = pbo->add_payload();
		item->set_key(it->first);
		item->set_value(it->second);
		item->set_type("str"); // FIXME other types than str (later)
	}
	for (LinkMap::const_iterator it=obj->_links._links.begin(); it!=obj->_links._links.end(); ++it) {
		protobuf::LinkSet* links = pbo->add_links();
		links->set_type(it->first);
		for (std::set<std::string>::const_iterator it2=it->second.begin(); it2!=it->second.end(); ++it2) {
			links->add_targets(*it2);
		}
	}
	pbo->SerializeToString(&wire);
	switch(obj->access_mode()) {
		case IU_ACCESS_PUSH:
			//std::cout << "Requesting to send as ipaaca-iu" << std::endl;
			return "ipaaca-iu";
		case IU_ACCESS_MESSAGE:
			//std::cout << "Requesting to send as ipaaca-messageiu" << std::endl;
			return "ipaaca-messageiu";
		default:
			//std::cout << "Requesting to send as default" << std::endl;
			return getWireSchema();
	}

}

IPAACA_EXPORT AnnotatedData IUConverter::deserialize(const std::string& wireSchema, const std::string& wire) {
	//std::cout << "deserialize" << std::endl;
	assert(wireSchema == getWireSchema()); // "ipaaca-iu"
	boost::shared_ptr<protobuf::IU> pbo(new protobuf::IU());
	pbo->ParseFromString(wire);
	IUAccessMode mode = static_cast<IUAccessMode>(pbo->access_mode());
	switch(mode) {
		case IU_ACCESS_PUSH:
			{
			// Create a "remote push IU"
			boost::shared_ptr<RemotePushIU> obj = RemotePushIU::create();
			// transfer pbo data to obj
			obj->_uid = pbo->uid();
			obj->_revision = pbo->revision();
			obj->_category = pbo->category();
			obj->_payload_type = pbo->payload_type();
			obj->_owner_name = pbo->owner_name();
			obj->_committed = pbo->committed();
			obj->_read_only = pbo->read_only();
			obj->_access_mode = IU_ACCESS_PUSH;
			for (int i=0; i<pbo->payload_size(); i++) {
				const protobuf::PayloadItem& it = pbo->payload(i);
				obj->_payload._store[it.key()] = it.value();
			}
			for (int i=0; i<pbo->links_size(); i++) {
				const protobuf::LinkSet& pls = pbo->links(i);
				LinkSet& ls = obj->_links._links[pls.type()];
				for (int j=0; j<pls.targets_size(); j++) {
					ls.insert(pls.targets(j));
				}
			}
			//return std::make_pair(getDataType(), obj);
			return std::make_pair("ipaaca::RemotePushIU", obj);
			break;
			}
		case IU_ACCESS_MESSAGE:
			{
			// Create a "Message-type IU"
			boost::shared_ptr<RemoteMessage> obj = RemoteMessage::create();
			//std::cout << "REFCNT after create: " << obj.use_count() << std::endl;
			// transfer pbo data to obj
			obj->_uid = pbo->uid();
			obj->_revision = pbo->revision();
			obj->_category = pbo->category();
			obj->_payload_type = pbo->payload_type();
			obj->_owner_name = pbo->owner_name();
			obj->_committed = pbo->committed();
			obj->_read_only = pbo->read_only();
			obj->_access_mode = IU_ACCESS_MESSAGE;
			for (int i=0; i<pbo->payload_size(); i++) {
				const protobuf::PayloadItem& it = pbo->payload(i);
				obj->_payload._store[it.key()] = it.value();
			}
			for (int i=0; i<pbo->links_size(); i++) {
				const protobuf::LinkSet& pls = pbo->links(i);
				LinkSet& ls = obj->_links._links[pls.type()];
				for (int j=0; j<pls.targets_size(); j++) {
					ls.insert(pls.targets(j));
				}
			}
			//return std::make_pair(getDataType(), obj);
			return std::make_pair("ipaaca::RemoteMessage", obj);
			break;
			}
		default:
			// other cases not handled yet! ( TODO )
			throw NotImplementedError();
	}
}

//}}}
// MessageConverter//{{{

IPAACA_EXPORT MessageConverter::MessageConverter()
: Converter<std::string> (IPAACA_SYSTEM_DEPENDENT_CLASS_NAME("ipaaca::Message"), "ipaaca-messageiu", true)
{
}

IPAACA_EXPORT std::string MessageConverter::serialize(const AnnotatedData& data, std::string& wire)
{
	// Ensure that DATA actually holds a datum of the data-type we expect.
	assert(data.first == getDataType()); // "ipaaca::Message"
	// NOTE: a dynamic_pointer_cast cannot be used from void*
	boost::shared_ptr<const Message> obj = boost::static_pointer_cast<const Message> (data.second);
	boost::shared_ptr<protobuf::IU> pbo(new protobuf::IU());
	// transfer obj data to pbo
	pbo->set_uid(obj->uid());
	pbo->set_revision(obj->revision());
	pbo->set_category(obj->category());
	pbo->set_payload_type(obj->payload_type());
	pbo->set_owner_name(obj->owner_name());
	pbo->set_committed(obj->committed());
	ipaaca::protobuf::IU_AccessMode a_m;
	switch(obj->access_mode()) {
		case IU_ACCESS_PUSH:
			a_m = ipaaca::protobuf::IU_AccessMode_PUSH;
			break;
		case IU_ACCESS_REMOTE:
			a_m = ipaaca::protobuf::IU_AccessMode_REMOTE;
			break;
		case IU_ACCESS_MESSAGE:
			a_m = ipaaca::protobuf::IU_AccessMode_MESSAGE;
			break;
	}
	pbo->set_access_mode(a_m);
	pbo->set_read_only(obj->read_only());
	for (std::map<std::string, std::string>::const_iterator it=obj->_payload._store.begin(); it!=obj->_payload._store.end(); ++it) {
		protobuf::PayloadItem* item = pbo->add_payload();
		item->set_key(it->first);
		item->set_value(it->second);
		item->set_type("str"); // FIXME other types than str (later)
	}
	for (LinkMap::const_iterator it=obj->_links._links.begin(); it!=obj->_links._links.end(); ++it) {
		protobuf::LinkSet* links = pbo->add_links();
		links->set_type(it->first);
		for (std::set<std::string>::const_iterator it2=it->second.begin(); it2!=it->second.end(); ++it2) {
			links->add_targets(*it2);
		}
	}
	pbo->SerializeToString(&wire);
	switch(obj->access_mode()) {
		case IU_ACCESS_PUSH:
			return "ipaaca-iu";
		case IU_ACCESS_MESSAGE:
			return "ipaaca-messageiu";
		default:
			//std::cout << "Requesting to send as default" << std::endl;
			return getWireSchema();
	}

}

IPAACA_EXPORT AnnotatedData MessageConverter::deserialize(const std::string& wireSchema, const std::string& wire) {
	assert(wireSchema == getWireSchema()); // "ipaaca-iu"
	boost::shared_ptr<protobuf::IU> pbo(new protobuf::IU());
	pbo->ParseFromString(wire);
	IUAccessMode mode = static_cast<IUAccessMode>(pbo->access_mode());
	switch(mode) {
		case IU_ACCESS_PUSH:
			{
			// Create a "remote push IU"
			boost::shared_ptr<RemotePushIU> obj = RemotePushIU::create();
			// transfer pbo data to obj
			obj->_uid = pbo->uid();
			obj->_revision = pbo->revision();
			obj->_category = pbo->category();
			obj->_payload_type = pbo->payload_type();
			obj->_owner_name = pbo->owner_name();
			obj->_committed = pbo->committed();
			obj->_read_only = pbo->read_only();
			obj->_access_mode = IU_ACCESS_PUSH;
			for (int i=0; i<pbo->payload_size(); i++) {
				const protobuf::PayloadItem& it = pbo->payload(i);
				obj->_payload._store[it.key()] = it.value();
			}
			for (int i=0; i<pbo->links_size(); i++) {
				const protobuf::LinkSet& pls = pbo->links(i);
				LinkSet& ls = obj->_links._links[pls.type()];
				for (int j=0; j<pls.targets_size(); j++) {
					ls.insert(pls.targets(j));
				}
			}
			//return std::make_pair(getDataType(), obj);
			return std::make_pair("ipaaca::RemotePushIU", obj);
			break;
			}
		case IU_ACCESS_MESSAGE:
			{
			// Create a "Message-type IU"
			boost::shared_ptr<RemoteMessage> obj = RemoteMessage::create();
			// transfer pbo data to obj
			obj->_uid = pbo->uid();
			obj->_revision = pbo->revision();
			obj->_category = pbo->category();
			obj->_payload_type = pbo->payload_type();
			obj->_owner_name = pbo->owner_name();
			obj->_committed = pbo->committed();
			obj->_read_only = pbo->read_only();
			obj->_access_mode = IU_ACCESS_MESSAGE;
			for (int i=0; i<pbo->payload_size(); i++) {
				const protobuf::PayloadItem& it = pbo->payload(i);
				obj->_payload._store[it.key()] = it.value();
			}
			for (int i=0; i<pbo->links_size(); i++) {
				const protobuf::LinkSet& pls = pbo->links(i);
				LinkSet& ls = obj->_links._links[pls.type()];
				for (int j=0; j<pls.targets_size(); j++) {
					ls.insert(pls.targets(j));
				}
			}
			//return std::make_pair(getDataType(), obj);
			return std::make_pair("ipaaca::RemoteMessage", obj);
			break;
			}
		default:
			// other cases not handled yet! ( TODO )
			throw NotImplementedError();
	}
}

//}}}
// IUPayloadUpdateConverter//{{{

IPAACA_EXPORT IUPayloadUpdateConverter::IUPayloadUpdateConverter()
: Converter<std::string> (IPAACA_SYSTEM_DEPENDENT_CLASS_NAME("ipaaca::IUPayloadUpdate"), "ipaaca-iu-payload-update", true)
{
}

IPAACA_EXPORT std::string IUPayloadUpdateConverter::serialize(const AnnotatedData& data, std::string& wire)
{
	assert(data.first == getDataType()); // "ipaaca::IUPayloadUpdate"
	boost::shared_ptr<const IUPayloadUpdate> obj = boost::static_pointer_cast<const IUPayloadUpdate> (data.second);
	boost::shared_ptr<protobuf::IUPayloadUpdate> pbo(new protobuf::IUPayloadUpdate());
	// transfer obj data to pbo
	pbo->set_uid(obj->uid);
	pbo->set_revision(obj->revision);
	pbo->set_writer_name(obj->writer_name);
	pbo->set_is_delta(obj->is_delta);
	for (std::map<std::string, std::string>::const_iterator it=obj->new_items.begin(); it!=obj->new_items.end(); ++it) {
		protobuf::PayloadItem* item = pbo->add_new_items();
		item->set_key(it->first);
		item->set_value(it->second);
		item->set_type("str"); // FIXME other types than str (later)
	}
	for (std::vector<std::string>::const_iterator it=obj->keys_to_remove.begin(); it!=obj->keys_to_remove.end(); ++it) {
		pbo->add_keys_to_remove(*it);
	}
	pbo->SerializeToString(&wire);
	return getWireSchema();

}

AnnotatedData IUPayloadUpdateConverter::deserialize(const std::string& wireSchema, const std::string& wire) {
	assert(wireSchema == getWireSchema()); // "ipaaca-iu-payload-update"
	boost::shared_ptr<protobuf::IUPayloadUpdate> pbo(new protobuf::IUPayloadUpdate());
	pbo->ParseFromString(wire);
	boost::shared_ptr<IUPayloadUpdate> obj(new IUPayloadUpdate());
	// transfer pbo data to obj
	obj->uid = pbo->uid();
	obj->revision = pbo->revision();
	obj->writer_name = pbo->writer_name();
	obj->is_delta = pbo->is_delta();
	for (int i=0; i<pbo->new_items_size(); i++) {
		const protobuf::PayloadItem& it = pbo->new_items(i);
		obj->new_items[it.key()] = it.value();
	}
	for (int i=0; i<pbo->keys_to_remove_size(); i++) {
		obj->keys_to_remove.push_back(pbo->keys_to_remove(i));
	}
	return std::make_pair(getDataType(), obj);
}

//}}}
// IULinkUpdateConverter//{{{

IPAACA_EXPORT IULinkUpdateConverter::IULinkUpdateConverter()
: Converter<std::string> (IPAACA_SYSTEM_DEPENDENT_CLASS_NAME("ipaaca::IULinkUpdate"), "ipaaca-iu-link-update", true)
{
}

IPAACA_EXPORT std::string IULinkUpdateConverter::serialize(const AnnotatedData& data, std::string& wire)
{
	assert(data.first == getDataType()); // "ipaaca::IULinkUpdate"
	boost::shared_ptr<const IULinkUpdate> obj = boost::static_pointer_cast<const IULinkUpdate> (data.second);
	boost::shared_ptr<protobuf::IULinkUpdate> pbo(new protobuf::IULinkUpdate());
	// transfer obj data to pbo
	pbo->set_uid(obj->uid);
	pbo->set_revision(obj->revision);
	pbo->set_writer_name(obj->writer_name);
	pbo->set_is_delta(obj->is_delta);
	for (std::map<std::string, std::set<std::string> >::const_iterator it=obj->new_links.begin(); it!=obj->new_links.end(); ++it) {
		protobuf::LinkSet* links = pbo->add_new_links();
		links->set_type(it->first);
		for (std::set<std::string>::const_iterator it2=it->second.begin(); it2!=it->second.end(); ++it2) {
			links->add_targets(*it2);
		}
	}
	for (std::map<std::string, std::set<std::string> >::const_iterator it=obj->links_to_remove.begin(); it!=obj->links_to_remove.end(); ++it) {
		protobuf::LinkSet* links = pbo->add_links_to_remove();
		links->set_type(it->first);
		for (std::set<std::string>::const_iterator it2=it->second.begin(); it2!=it->second.end(); ++it2) {
			links->add_targets(*it2);
		}
	}
	pbo->SerializeToString(&wire);
	return getWireSchema();

}

AnnotatedData IULinkUpdateConverter::deserialize(const std::string& wireSchema, const std::string& wire) {
	assert(wireSchema == getWireSchema()); // "ipaaca-iu-link-update"
	boost::shared_ptr<protobuf::IULinkUpdate> pbo(new protobuf::IULinkUpdate());
	pbo->ParseFromString(wire);
	boost::shared_ptr<IULinkUpdate> obj(new IULinkUpdate());
	// transfer pbo data to obj
	obj->uid = pbo->uid();
	obj->revision = pbo->revision();
	obj->writer_name = pbo->writer_name();
	obj->is_delta = pbo->is_delta();
	for (int i=0; i<pbo->new_links_size(); ++i) {
		const protobuf::LinkSet& it = pbo->new_links(i);
		for (int j=0; j<it.targets_size(); ++j) {
			obj->new_links[it.type()].insert(it.targets(j)); // = vec;
		}
	}
	for (int i=0; i<pbo->links_to_remove_size(); ++i) {
		const protobuf::LinkSet& it = pbo->links_to_remove(i);
		for (int j=0; j<it.targets_size(); ++j) {
			obj->links_to_remove[it.type()].insert(it.targets(j));
		}
	}
	return std::make_pair(getDataType(), obj);
}

//}}}
// IntConverter//{{{

IPAACA_EXPORT IntConverter::IntConverter()
: Converter<std::string> ("int", "int32", true)
{
}

IPAACA_EXPORT std::string IntConverter::serialize(const AnnotatedData& data, std::string& wire)
{
	// Ensure that DATA actually holds a datum of the data-type we expect.
	assert(data.first == getDataType()); // "int"
	// NOTE: a dynamic_pointer_cast cannot be used from void*
	boost::shared_ptr<const int> obj = boost::static_pointer_cast<const int> (data.second);
	boost::shared_ptr<protobuf::IntMessage> pbo(new protobuf::IntMessage());
	// transfer obj data to pbo
	pbo->set_value(*obj);
	pbo->SerializeToString(&wire);
	return getWireSchema();

}

IPAACA_EXPORT AnnotatedData IntConverter::deserialize(const std::string& wireSchema, const std::string& wire) {
	assert(wireSchema == getWireSchema()); // "int"
	boost::shared_ptr<protobuf::IntMessage> pbo(new protobuf::IntMessage());
	pbo->ParseFromString(wire);
	boost::shared_ptr<int> obj = boost::shared_ptr<int>(new int(pbo->value()));
	return std::make_pair("int", obj);
}

//}}}

} // of namespace ipaaca