size_t fromString(PVStructureArrayPtr const &pv, StringArray const & from, size_t fromStartIndex = 0)
{
int processed = 0;
size_t fromValueCount = from.size();
// first get count
if (fromStartIndex >= fromValueCount)
throw std::runtime_error("not enough of values");
size_t numberOfStructures;
istringstream iss(from[fromStartIndex]);
iss >> numberOfStructures;
// not fail and entire value is parsed (e.g. to detect 1.2 parsing to 1)
if (iss.fail() || !iss.eof())
throw runtime_error("failed to parse element count value (uint) of field '" + pv->getFieldName() + "' from string value '" + from[fromStartIndex] + "'");
fromStartIndex++;
processed++;
PVStructureArray::svector pvStructures;
pvStructures.reserve(numberOfStructures);
PVDataCreatePtr pvDataCreate = getPVDataCreate();
for (size_t i = 0; i < numberOfStructures; ++i)
{
PVStructurePtr pvStructure = pvDataCreate->createPVStructure(pv->getStructureArray()->getStructure());
size_t count = fromString(pvStructure, from, fromStartIndex);
processed += count;
fromStartIndex += count;
pvStructures.push_back(pvStructure);
}
pv->replace(freeze(pvStructures));
return processed;
}
void ExampleServiceRPC::request(
ChannelRPCRequester::shared_pointer const & channelRPCRequester,
epics::pvData::PVStructure::shared_pointer const & pvArgument)
{
String buffer;
PVStringPtr pvfunction = pvArgument->getStringField("function");
PVStringArrayPtr pvnames = static_pointer_cast<PVStringArray>
(pvArgument->getScalarArrayField("names",pvString));
PVStringArrayPtr pvvalues = static_pointer_cast<PVStringArray>
(pvArgument->getScalarArrayField("values",pvString));
buffer += "pvArgument ";
bool is = true;
if(pvfunction==0) is = false;
if(pvnames==0) is = false;
if(pvvalues==0) is = false;
if(is) {
buffer += "is a NTNameValue\n";
} else {
buffer += "is not a NTNameValue\n ";
}
pvArgument->toString(&buffer);
printf("%s\n",buffer.c_str());
StandardFieldPtr standardField = getStandardField();
StandardPVFieldPtr standardPVField = getStandardPVField();
FieldCreatePtr fieldCreate = getFieldCreate();
PVDataCreatePtr pvDataCreate = getPVDataCreate();
size_t n = 5;
FieldConstPtrArray fields;
StringArray names;
fields.reserve(n);
names.reserve(n);
names.push_back("alarm");
names.push_back("timeStamp");
names.push_back("label");
names.push_back("position");
names.push_back("alarms");
StructureConstPtr xxx = standardField->alarm();
printf("xxx %p\n",xxx.get());
fields.push_back(standardField->alarm());
fields.push_back(standardField->timeStamp());
fields.push_back(fieldCreate->createScalarArray(pvString));
fields.push_back(fieldCreate->createScalarArray(pvDouble));
fields.push_back(fieldCreate->createStructureArray(standardField->alarm()));
StructureConstPtr structure = fieldCreate->createStructure(names,fields);
printf("structure %p\n",structure.get());
buffer.clear();
structure->toString(&buffer);
printf("structure\n%s\n",buffer.c_str());
PVStructurePtr pvStructure = pvDataCreate->createPVStructure(structure);
PVTimeStamp pvTimeStamp;
TimeStamp timeStamp;
pvTimeStamp.attach(pvStructure->getStructureField("timeStamp"));
timeStamp.getCurrent();
pvTimeStamp.set(timeStamp);
StringArray label;
label.reserve(2);
for(int i=0; i<2; i++) {
label.push_back(names[i+3]);
}
PVStringArrayPtr pvLabel = static_pointer_cast<PVStringArray>
(pvStructure->getScalarArrayField("label",pvString));
pvLabel->put(0,2,label,0);
PVDoubleArrayPtr pvPositions = static_pointer_cast<PVDoubleArray>
(pvStructure->getScalarArrayField("position",pvDouble));
double positions[2];
positions[0] = 1.0;
positions[1] = 2.0;
pvPositions->put(0,2,positions,0);
PVStructureArrayPtr pvAlarms = static_pointer_cast<PVStructureArray>
(pvStructure->getStructureArrayField("alarms"));
PVAlarm pvAlarm;
Alarm alarm;
PVStructurePtrArray palarms;
size_t na=2;
palarms.reserve(na);
for(size_t i=0; i<na; i++) {
palarms.push_back(pvDataCreate->createPVStructure(standardField->alarm()));
}
for(size_t i=0; i<na; i++) {
pvAlarm.attach(palarms[i]);
alarm.setMessage("test");
alarm.setSeverity(majorAlarm);
alarm.setStatus(clientStatus);
pvAlarm.set(alarm);
}
pvAlarms->put(0,2,palarms,0);
String labels[2];
labels[0] = pvPositions->getFieldName();
labels[1] = pvAlarms->getFieldName();
pvLabel->put(0,2,labels,0);
buffer.erase();
pvStructure->toString(&buffer);
printf("%s\n",buffer.c_str());
channelRPCRequester->requestDone(Status::Ok,pvStructure);
}