/** Process WorkspaceGroup inputs.
*
* Overriden from Algorithm base class.
*
* This should be called after checkGroups(), which sets up required members.
* It goes through each member of the group(s), creates and sets an algorithm
* for each and executes them one by one.
*
* If there are several group input workspaces, then the member of each group
* is executed pair-wise.
*
* @param sourceAlg : Source algorithm
* @param vecMultiPeriodGroups : Vector of pre-identified multiperiod groups.
* @return true - if all the workspace members are executed.
*/
bool MultiPeriodGroupWorker::processGroups(
Algorithm *const sourceAlg,
const VecWSGroupType &vecMultiPeriodGroups) const {
// If we are not processing multiperiod groups, use the base behaviour.
if (vecMultiPeriodGroups.empty()) {
return false; // Indicates that this is not a multiperiod group workspace.
}
Property *outputWorkspaceProperty = sourceAlg->getProperty("OutputWorkspace");
const std::string outName = outputWorkspaceProperty->value();
const size_t nPeriods = vecMultiPeriodGroups[0]->size();
WorkspaceGroup_sptr outputWS = boost::make_shared<WorkspaceGroup>();
AnalysisDataService::Instance().addOrReplace(outName, outputWS);
double progress_proportion = 1.0 / static_cast<double>(nPeriods);
// Loop through all the periods. Create spawned algorithms of the same type as
// this to process pairs from the input groups.
for (size_t i = 0; i < nPeriods; ++i) {
const int periodNumber = static_cast<int>(i + 1);
// use create Child Algorithm that look like this one
Algorithm_sptr alg = sourceAlg->createChildAlgorithm(
sourceAlg->name(), progress_proportion * periodNumber,
progress_proportion * (1 + periodNumber), sourceAlg->isLogging(),
sourceAlg->version());
if (!alg) {
throw std::runtime_error("Algorithm creation failed.");
}
// Don't make the new algorithm a child so that it's workspaces are stored
// correctly
alg->setChild(false);
alg->setRethrows(true);
alg->initialize();
// Copy properties that aren't workspaces properties.
sourceAlg->copyNonWorkspaceProperties(alg.get(), periodNumber);
if (this->useCustomWorkspaceProperty()) {
const std::string inputWorkspaces =
createFormattedInputWorkspaceNames(i, vecMultiPeriodGroups);
// Set the input workspace property.
alg->setPropertyValue(this->m_workspacePropertyName, inputWorkspaces);
} else {
// Configure input properties that are group workspaces.
copyInputWorkspaceProperties(alg.get(), sourceAlg, periodNumber);
}
const std::string outName_i = outName + "_" + Strings::toString(i + 1);
alg->setPropertyValue("OutputWorkspace", outName_i);
// Run the spawned algorithm.
if (!alg->execute()) {
throw std::runtime_error("Execution of " + sourceAlg->name() +
" for group entry " + Strings::toString(i + 1) +
" failed.");
}
// Add the output workpace from the spawned algorithm to the group.
outputWS->add(outName_i);
}
sourceAlg->setProperty("OutputWorkspace", outputWS);
return true;
}
