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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#include <boost/algorithm/string.hpp>
#include "uscxml/Common.h"
#include "uscxml/config.h"
#include "SWIDataModel.h"
#include "uscxml/DOMUtils.h"
#include "uscxml/Message.h"
#include <glog/logging.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
// these are defined but not exported by swi-prolog 7
extern "C" {
PL_EXPORT(int) PL_is_dict(term_t t);
PL_EXPORT(int) PL_for_dict(term_t dict, int (*func)(term_t key, term_t value, int last, void *closure), void *closure, int flags);
}
#define RETHROW_PLEX_AS_EVENT \
catch (PlException plex) { \
Event e; \
e.name = "error.execution"; \
e.data.compound["cause"] = (char*)plex; \
throw e; \
} \
// this might evolve into multi-threaded prolog, but no need for now
#define SET_PL_CONTEXT \
_dmPtr = this;
#define PL_MODULE \
_interpreter.getSessionId().c_str() \
#define UNSET_PL_ENGINE(dm) \
PL_set_engine(NULL, NULL);
#define SET_PL_ENGINE(dm) \
assert(_swiEngines.find(dm) != _swiEngines.end()); \
int rc = PL_set_engine(_swiEngines[dm], NULL); \
assert(rc == PL_ENGINE_SET); \
_dmPtr = dm;
namespace uscxml {
using namespace Arabica::XPath;
using namespace Arabica::DOM;
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool pluginConnect(pluma::Host& host) {
host.add( new SWIDataModelProvider() );
return true;
}
#endif
// SWI prolog does not support passing user data
static SWIDataModel* _dmPtr;
static std::map<SWIDataModel*, PL_engine_t> _swiEngines;
PL_blob_t SWIDataModel::blobType = {
PL_BLOB_MAGIC,
PL_BLOB_NOCOPY,
(char*)"blob",
releaseBlob,
compareBlob,
writeBlob,
acquireBlob
};
SWIDataModel::SWIDataModel() {
}
SWIDataModel::~SWIDataModel() {
try {
if (_swiEngines.find(this) != _swiEngines.end()) {
PL_destroy_engine(_swiEngines[this]);
_swiEngines.erase(this);
}
}
RETHROW_PLEX_AS_EVENT;
}
boost::shared_ptr<DataModelImpl> SWIDataModel::create(InterpreterImpl* interpreter) {
try {
boost::shared_ptr<SWIDataModel> dm = boost::shared_ptr<SWIDataModel>(new SWIDataModel());
dm->_interpreter = interpreter;
const char* swibin = getenv("SWI_BINARY");
if (swibin == NULL)
swibin = SWI_BINARY;
const char* quiet = "--quiet";
int argc = 2;
static char * av[] = {
(char*)swibin,
(char*)quiet,
NULL
};
PL_engine_t engine;
if (!PL_is_initialised(NULL, NULL)) {
if(!PL_initialise(argc,av)) {
LOG(ERROR) << "Error intializing prolog engine";
PL_halt(1);
return boost::shared_ptr<DataModelImpl>();
}
PL_set_engine(PL_ENGINE_CURRENT, &engine);
// load SWI XML parser
try {
PlCall("use_module", PlCompound("library", PlTerm("sgml")));
} catch (PlException plex) {
LOG(ERROR) << "Cannot load prolog sgml module - make sure you have it installed in your prolog runtime: " << (char*)plex;
throw plex;
}
// load json parser
try {
PlCall("use_module", PlCompound("library", PlTerm("http/json")));
PlCall("use_module", PlCompound("library", PlTerm("http/json_convert")));
} catch (PlException plex) {
LOG(ERROR) << "Cannot load prolog json module or json_convert - make sure you have it installed in your prolog runtime: " << (char*)plex;
throw plex;
}
} else {
LOG(WARNING) << "Instantiating more than one SWI prolog datamodel will lead to weird effects as I cannot seperate the environments";
engine = PL_create_engine(NULL);
}
assert(engine);
_swiEngines[dm.get()] = engine;
_dmPtr = dm.get();
int rc = PL_set_engine(engine, NULL);
assert(rc == PL_ENGINE_SET);
(void)rc;
_plModule = boost::replace_all_copy(interpreter->getSessionId(), "-", "");
boost::replace_all(_plModule, "0", "g");
boost::replace_all(_plModule, "1", "h");
boost::replace_all(_plModule, "2", "i");
boost::replace_all(_plModule, "3", "j");
boost::replace_all(_plModule, "4", "k");
boost::replace_all(_plModule, "5", "l");
boost::replace_all(_plModule, "6", "m");
boost::replace_all(_plModule, "7", "n");
boost::replace_all(_plModule, "8", "o");
boost::replace_all(_plModule, "9", "p");
// use atoms for double quoted
PlCall("set_prolog_flag(double_quotes,atom).");
// set system variables
PlCall("assert", PlCompound("sessionid", PlTerm(PlString(dm->_interpreter->getSessionId().c_str()))));
PlCall("assert", PlCompound("name", PlTerm(PlString(dm->_interpreter->getName().c_str()))));
std::map<std::string, IOProcessor>::const_iterator ioProcIter = dm->_interpreter->getIOProcessors().begin();
while(ioProcIter != dm->_interpreter->getIOProcessors().end()) {
Data ioProcData = ioProcIter->second.getDataModelVariables();
if (ioProcIter->first.find_first_of(":/'") == std::string::npos) {
std::stringstream ioProcShortCall;
ioProcShortCall << "assert(ioprocessors(" << ioProcIter->first << "(location('" << ioProcData.compound["location"].atom << "'))))";
PlCall(ioProcShortCall.str().c_str());
}
std::stringstream ioProcCall;
ioProcCall << "assert(ioprocessors(name('" << ioProcIter->first << "'), location('" << ioProcData.compound["location"].atom << "')))";
PlCall(ioProcCall.str().c_str());
ioProcIter++;
}
// the in predicate
PlRegister("user", "in", 1, SWIDataModel::inPredicate);
return dm;
}
RETHROW_PLEX_AS_EVENT;
}
foreign_t SWIDataModel::inPredicate(term_t a0, int arity, void* context) {
try {
char *s;
if ( PL_get_atom_chars(a0, &s) ) {
NodeSet<std::string> config = _dmPtr->_interpreter->getConfiguration();
for (int i = 0; i < config.size(); i++) {
if (HAS_ATTR(config[i], "id") && strcmp(ATTR(config[i], "id").c_str(), s) == 0) {
return TRUE;
}
}
}
return FALSE;
}
RETHROW_PLEX_AS_EVENT;
}
void SWIDataModel::registerIOProcessor(const std::string& name, const IOProcessor& ioprocessor) {
// std::cout << "SWIDataModel::registerIOProcessor" << std::endl;
}
void SWIDataModel::setSessionId(const std::string& sessionId) {
// std::cout << "SWIDataModel::setSessionId" << std::endl;
_sessionId = sessionId;
}
void SWIDataModel::setName(const std::string& name) {
// std::cout << "SWIDataModel::setName" << std::endl;
_name = name;
}
void SWIDataModel::pushContext() {
// std::cout << "SWIDataModel::pushContext" << std::endl;
}
void SWIDataModel::popContext() {
// std::cout << "SWIDataModel::popContext" << std::endl;
}
void SWIDataModel::initialize() {
// std::cout << "SWIDataModel::initialize" << std::endl;
}
void SWIDataModel::setEvent(const Event& event) {
SET_PL_CONTEXT;
// remove old event
try {
PlCall("retractall(event(_))");
// simple values
PlCall("assert", PlCompound("event", PlCompound("name", PlTerm(event.name.c_str()))));
PlCall("assert", PlCompound("event", PlCompound("origin", PlString(event.origin.c_str()))));
PlCall("assert", PlCompound("event", PlCompound("origintype", PlString(event.invokeid.c_str()))));
PlCall("assert", PlCompound("event", PlCompound("invokeid", PlTerm(event.origintype.c_str()))));
PlCall("assert", PlCompound("event", PlCompound("raw", PlString(event.raw.c_str()))));
// event.type
std::string type;
switch (event.eventType) {
case Event::PLATFORM:
type = "platform";
break;
case Event::INTERNAL:
type = "internal";
break;
case Event::EXTERNAL:
type = "external";
break;
}
PlCall("assert", PlCompound("event", PlCompound("type", PlTerm(type.c_str()))));
// event.sendid
if (!event.hideSendId)
PlCall("assert", PlCompound("event", PlCompound("sendid", PlTerm(event.sendid.c_str()))));
// event.data
URL domUrl;
if (event.dom) {
std::stringstream dataInitStr;
std::stringstream xmlDoc;
// xmlDoc << event.getFirstDOMElement();
xmlDoc << event.dom;
domUrl = URL::toLocalFile(xmlDoc.str(), ".pl");
dataInitStr << "load_xml_file('" << domUrl.asLocalFile(".pl") << "', XML), copy_term(XML,DATA), assert(event(data(DATA)))";
PlCall(dataInitStr.str().c_str());
} else if (event.content.size() > 0) {
PlCall("assert", PlCompound("event", PlCompound("data", PlString(Interpreter::spaceNormalize(event.content).c_str()))));
} else if (event.data) {
assertFromData(event.data, "event(data(", 2);
}
// event.params
size_t uniqueKeys = 0;
Event::params_t::const_iterator paramIter = event.params.begin();
while(paramIter != event.params.end()) {
uniqueKeys++;
paramIter = event.params.upper_bound(paramIter->first);
}
if (uniqueKeys > 0) {
paramIter = event.params.begin();
for(int i = 0; paramIter != event.params.end(); i++) {
std::stringstream paramArray;
Event::params_t::const_iterator lastValueIter = event.params.upper_bound(paramIter->first);
paramArray << paramIter->first << "([";
std::string termSep = "";
for (int j = 0; paramIter != lastValueIter; j++) {
paramArray << termSep << "'" << paramIter->second << "'";
termSep = ", ";
paramIter++;
}
paramArray << "])";
std::stringstream paramExpr;
paramExpr << "assert(event(param(" << paramArray.str() << ")))";
//std::cout << paramExpr.str() << std::endl;
PlCall(paramExpr.str().c_str());
paramIter = lastValueIter;
}
}
}
RETHROW_PLEX_AS_EVENT;
}
void SWIDataModel::assertFromData(const Data& data, const std::string& expr, size_t nesting) {
if (data.atom.size() > 0) {
// terminal branch, this is where we assert
std::stringstream ss;
ss << expr;
// nesting++;
if (data.type == Data::VERBATIM) {
ss << "\"" << data.atom << "\"";
} else {
ss << data.atom;
}
for (size_t i = 0; i < nesting; i++) {
ss << ")";
}
// std::cout << ss.str() << std::endl;
PlCall("assert", PlCompound(ss.str().c_str()));
return;
}
if (data.compound.size() > 0) {
std::map<std::string, Data>::const_iterator compIter = data.compound.begin();
while(compIter != data.compound.end()) {
assert(compIter->first.length() > 0);
assertFromData(compIter->second, expr + compIter->first + "(", nesting + 1);
compIter++;
}
}
if (data.array.size() > 0) {
std::list<Data>::const_iterator arrIter = data.array.begin();
while(arrIter != data.array.end()) {
assertFromData(*arrIter, expr, nesting);
arrIter++;
}
}
if (data.node) {
std::stringstream dataInitStr;
std::stringstream xmlDoc;
xmlDoc << data.node;
URL domUrl = URL::toLocalFile(xmlDoc.str(), ".pl");
dataInitStr << "load_xml_file('" << domUrl.asLocalFile(".pl") << "', XML), ";
dataInitStr << "copy_term(XML,DATA), ";
dataInitStr << "assert(";
dataInitStr << expr << "(DATA)";
for (size_t i = 0; i < nesting; i++) {
dataInitStr << ")";
}
PlCall(dataInitStr.str().c_str());
return;
}
}
Data SWIDataModel::getStringAsData(const std::string& content) {
SET_PL_CONTEXT
try {
PlTerm term(content.c_str());
return(termAsData(term));
}
RETHROW_PLEX_AS_EVENT
}
Data SWIDataModel::termAsData(PlTerm term) {
Data data;
// std::cout << term.name() << (char*)term << std::endl;
switch (term.type()) {
case PL_TERM:
for (int i = 1; i <= term.arity(); i++) { // arguments start at 1
data.compound[term.name()].array.push_back(termAsData(term[i]));
}
break;
case PL_INTEGER:
case PL_FLOAT:
case PL_SHORT:
case PL_INT:
case PL_LONG:
case PL_DOUBLE:
data.atom = std::string(term);
data.type = Data::INTERPRETED;
break;
case PL_ATOM:
data.atom = std::string(term);
data.type = Data::VERBATIM;
break;
#ifdef SWI_HAS_PL_NIL
case PL_NIL:
data.array.push_back(Data("", Data::VERBATIM));
break;
#endif
#ifdef SWI_HAS_PL_LIST_PAIR
case PL_LIST_PAIR: {
PlTail tail(term);
PlTerm item;
while(tail.next(item)) {
data.array.push_back(termAsData(item));
}
break;
}
#endif
#ifdef SWI_HAS_DICT
case PL_DICT: {
std::string key(term);
size_t curlyPos = key.find_first_of("{");
if (curlyPos == std::string::npos || curlyPos == 0) {
// no key given
PL_for_dict(term, SWIDataModel::dictCallBack, &data, 0);
} else {
// with key given
Data& tmp = data.compound[boost::trim_copy(key.substr(0, curlyPos))];
PL_for_dict(term, SWIDataModel::dictCallBack, &tmp, 0);
}
break;
}
#endif
default:
LOG(ERROR) << "Prolog type " << term.type() << " at '" << (char*)term << "' not supported";
break;
}
return data;
}
int SWIDataModel::dictCallBack(term_t key, term_t value, int last, void *closure) {
Data* data = (Data*)closure;
PlTerm keyTerm(key);
data->compound[(char*)keyTerm] = termAsData(value);
return 0;
}
PlTerm SWIDataModel::dataAsTerm(Data data) {
if (data.atom.length() > 0) {
return PlTerm(data.atom.c_str());
}
if (data.array.size() > 0) {
PlTerm head;
PlTail list(head);
std::list<Data>::const_iterator arrIter = data.array.begin();
while(arrIter != data.array.end()) {
list.append(dataAsTerm(*arrIter));
arrIter++;
}
list.close();
return PlTail(head);
}
if (data.compound.size() > 0) {
if (data.compound.size() == 1 && data.compound.begin()->second.array.size() > 0) {
// this used to be a prolog compound
const Data& arr = data.compound.begin()->second;
PlTermv termv(arr.array.size());
int index = 0;
std::list<Data>::const_iterator arrIter = arr.array.begin();
while(arrIter != arr.array.end()) {
termv[index] = dataAsTerm(*arrIter);
index++;
arrIter++;
}
return PlCompound(data.compound.begin()->first.c_str(), termv);
} else if (data.compound.size() == 1 && data.compound.begin()->second.compound.size() > 0) {
// this used to be a named dict - until we have dict support in C/C++ use PL_chars_to_term
std::stringstream dictSS;
std::string seperator;
dictSS << data.compound.begin()->first << "{";
std::map<std::string, Data>::const_iterator keyIter = data.compound.begin()->second.compound.begin();
while(keyIter != data.compound.begin()->second.compound.end()) {
dictSS << seperator << keyIter->first << ":" << (char*)dataAsTerm(keyIter->second);
seperator = ",";
keyIter++;
}
dictSS << "}";
return PlCompound(dictSS.str().c_str());
} else {
// an array of dicts
PlTermv termv(data.compound.size());
int index = 0;
std::map<std::string, Data>::const_iterator compIter = data.compound.begin();
while(compIter != data.compound.end()) {
termv[index] = PlCompound(compIter->first.c_str(), dataAsTerm(compIter->second));
index++;
compIter++;
}
return PlCompound(data.compound.begin()->first.c_str(), termv);
}
}
if (data.binary) {
LOG(ERROR) << "Binary data with prolog datamodel still very experimental";
// term_t binTerm = PL_new_term_ref();
// PL_put_blob(binTerm, data.binary->data, data.binary->size, &blobType);
// return binTerm;
}
if (data.node) {
LOG(ERROR) << "DOM in event with prolog datamodel still very experimental";
std::stringstream dataInitStr;
std::stringstream xmlDoc;
// xmlDoc << event.getFirstDOMElement();
xmlDoc << data.node;
URL domUrl = URL::toLocalFile(xmlDoc.str(), ".pl");
dataInitStr << "load_xml_file('" << domUrl.asLocalFile(".pl") << "', XML), copy_term(XML,DATA), assert(event(data(DATA)))";
PlCall(dataInitStr.str().c_str());
}
return PlTerm();
}
bool SWIDataModel::validate(const std::string& location, const std::string& schema) {
SET_PL_CONTEXT
// std::cout << "SWIDataModel::validate" << std::endl;
return true;
}
uint32_t SWIDataModel::getLength(const std::string& expr) {
SET_PL_CONTEXT
try {
PlCompound compound(expr.c_str());
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
PlQuery query(compound.name(), termv);
uint32_t length = 0;
while(query.next_solution() > 0)
length++;
return length;
}
RETHROW_PLEX_AS_EVENT;
}
void SWIDataModel::setForeach(const std::string& item,
const std::string& array,
const std::string& index,
uint32_t iteration) {
SET_PL_CONTEXT
try {
PlCompound compound(array.c_str());
PlCompound orig(array.c_str());
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
{
int tmp = iteration + 1;
PlQuery query(compound.name(), termv);
while (tmp) {
query.next_solution();
tmp--;
}
}
PlCall("retractall", PlCompound(index.c_str(), 1));
PlCall("retractall", PlCompound(item.c_str(), 1));
PlCall("assert", PlCompound(index.c_str(), PlTerm((long)iteration)));
std::map<std::string, PlTerm> vars = resolveAtoms(compound, orig);
std::map<std::string, PlTerm>::iterator varIter = vars.begin();
while(varIter != vars.end()) {
PlCall("assert", PlCompound(item.c_str(), varIter->second));
varIter++;
}
}
RETHROW_PLEX_AS_EVENT;
}
void SWIDataModel::eval(const Element<std::string>& scriptElem, const std::string& expr) {
SET_PL_CONTEXT
try {
if (scriptElem && HAS_ATTR(scriptElem, "type") && iequals(ATTR(scriptElem, "type"), "query")) {
evalAsBool(expr);
} else {
URL localPLFile = URL::toLocalFile(expr, ".pl");
PlCall("user", "load_files", PlTermv(localPLFile.asLocalFile(".pl").c_str())) || LOG(ERROR) << "Could not execute prolog from file";
}
}
RETHROW_PLEX_AS_EVENT;
}
bool SWIDataModel::evalAsBool(const std::string& expr) {
return evalAsBool(Arabica::DOM::Node<std::string>(), expr);
}
bool SWIDataModel::evalAsBool(const Arabica::DOM::Node<std::string>& node, const std::string& expr) {
SET_PL_CONTEXT
try {
PlCompound compound(expr.c_str());
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
PlQuery query(compound.name(), termv);
return query.next_solution() > 0;
} catch(...) {
return false;
}
}
std::string SWIDataModel::evalAsString(const std::string& expr) {
SET_PL_CONTEXT
try {
PlCompound orig(expr.c_str()); // keep the original to find variables
PlCompound compound(expr.c_str());
if (strlen(compound.name())) {
PlTermv termv(compound.arity());
for (int i = 0; i < compound.arity(); i++) {
termv[i] = compound[i + 1];
}
PlQuery query(compound.name(), termv);
std::stringstream ss;
std::string solSeparator = "";
while (query.next_solution()) {
ss << solSeparator;
std::map<std::string, PlTerm> vars = resolveAtoms(compound, orig);
std::map<std::string, PlTerm>::const_iterator varIter = vars.begin();
std::string varSeparator = "";
while(varIter != vars.end()) {
ss << varSeparator << (char *)varIter->second;
varSeparator = ", ";
varIter++;
}
solSeparator = "\n";
}
return ss.str();
}
return std::string(compound);
} catch(PlException plex) {
// we got an exception while trying to evaluate as compound
PlTerm term(expr.c_str());
if (term.type() == PL_ATOM || term.type() == PL_CHARS || term.type() == PL_STRING) {
return std::string(term);
} else {
Event e;
e.name = "error.execution";
e.data.compound["cause"] = (char*)plex;
throw e;
}
}
}
// this is similar to http://etalis.googlecode.com/svn/eEtalis/src/term.c
std::map<std::string, PlTerm> SWIDataModel::resolveAtoms(PlTerm& term, PlTerm& orig) {
SET_PL_CONTEXT
try {
std::map<std::string, PlTerm> atoms;
switch (orig.type()) {
case PL_VARIABLE: {
atoms[(char *)orig] = term;
break;
}
case PL_ATOM:
break;
case PL_STRING:
break;
case PL_INTEGER:
break;
case PL_TERM:
for (int i = 1; i <= orig.arity(); i++) {
PlTerm newTerm = term[i];
PlTerm newOrig = orig[i];
std::map<std::string, PlTerm> result = resolveAtoms(newTerm, newOrig);
atoms.insert(result.begin(), result.end());
}
break;
default:
LOG(ERROR) << "Resolving variable of unknown type in query solution";
}
return atoms;
}
RETHROW_PLEX_AS_EVENT
}
void SWIDataModel::assign(const Element<std::string>& assignElem,
const Node<std::string>& node,
const std::string& content) {
SET_PL_CONTEXT
try {
std::string expr = content;
std::string predicate;
if (HAS_ATTR(assignElem, "expr")) {
expr = ATTR(assignElem, "expr");
}
if (HAS_ATTR(assignElem, "id"))
predicate = ATTR(assignElem, "id");
if (HAS_ATTR(assignElem, "location"))
predicate = ATTR(assignElem, "location");
if (predicate.size() > 0) {
std::string callAssert = "assert";
std::string type;
if (HAS_ATTR(assignElem, "type")) {
type = ATTR(assignElem, "type");
if(iequals(type, "append")) {
callAssert = "assertz";
} else if(iequals(type, "prepend")) {
callAssert = "asserta";
}
}
URL domUrl;
Data json;
if (!node)
json = Data::fromJSON(expr);
if (node) {
std::stringstream dataInitStr;
std::stringstream xmlDoc;
Node<std::string> child = node;
while(child) {
xmlDoc << child;
child = child.getNextSibling();
}
domUrl = URL::toLocalFile(xmlDoc.str(), ".pl");
if (iequals(type, "retract"))
PlCall("retractall", PlCompound(predicate.c_str(), 1));
dataInitStr << "load_xml_file('" << domUrl.asLocalFile(".pl") << "', XML), copy_term(XML,DATA), " << callAssert << "(" << predicate << "(DATA))";
PlCall(dataInitStr.str().c_str());
} else if (json) {
std::stringstream dataInitStr;
if (iequals(type, "retract"))
PlCall("retractall", PlCompound(predicate.c_str(), 1));
dataInitStr << "json_to_prolog(" << expr << ", JSON), assert(" << predicate << "(JSON))";
PlCall(dataInitStr.str().c_str());
} else {
// treat content as . seperated facts
std::stringstream factStream(content);
std::string item;
while(std::getline(factStream, item, '.')) {
std::string fact = boost::trim_copy(item);
if (fact.length() == 0)
continue;
PlCall((callAssert + "(" + predicate + "(" + fact + "))").c_str());
}
}
} else if (expr.length() > 0) {
if (boost::equals(TAGNAME(assignElem), "data")) {
eval(assignElem, expr);
} else {
std::stringstream exprStream(expr);
std::string item;
while(std::getline(exprStream, item, '.')) {
std::string plExpr = boost::trim_copy(item);
if (plExpr.length() == 0)
continue;
PlCall(plExpr.c_str());
}
}
}
}
RETHROW_PLEX_AS_EVENT
}
void SWIDataModel::assign(const std::string& location, const Data& data) {
eval(Element<std::string>(), data.atom);
}
void SWIDataModel::init(const Element<std::string>& dataElem,
const Node<std::string>& node,
const std::string& content) {
assign(dataElem, node, content);
}
void SWIDataModel::init(const std::string& location, const Data& data) {
assign(location, data);
}
bool SWIDataModel::isDeclared(const std::string& expr) {
return true;
}
void SWIDataModel::acquireBlob(atom_t symbol) {
}
int SWIDataModel::releaseBlob(atom_t symbol) {
return TRUE;
}
int SWIDataModel::compareBlob(atom_t a, atom_t b) {
return 0;
}
int SWIDataModel::writeBlob(void *s, atom_t symbol, int flags) {
return TRUE;
}
}
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