SExtractObj.cpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2017.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#include "ctrlCamp/SExtractObj.hpp"

#include <fwData/mt/ObjectWriteLock.hpp>

#include <fwDataCamp/exception/NullPointer.hpp>
#include <fwDataCamp/exception/ObjectNotFound.hpp>
#include <fwDataCamp/getObject.hpp>

#include <fwServices/registry/ObjectService.hpp>

namespace ctrlCamp
{

fwServicesRegisterMacro(::ctrlCamp::ICamp, ::ctrlCamp::SExtractObj);

//-----------------------------------------------------------------------------

SExtractObj::SExtractObj()
{

}

//-----------------------------------------------------------------------------

SExtractObj::~SExtractObj()
{
}

//-----------------------------------------------------------------------------

void SExtractObj::configuring()
{
    typedef ::fwRuntime::ConfigurationElement::sptr ConfigurationType;

    const ConfigurationType inoutCfg = m_configuration->findConfigurationElement("inout");
    SLM_ASSERT("At one 'inout' tag is required.", inoutCfg);

    const std::vector< ConfigurationType > extractCfg = inoutCfg->find("extract");
    SLM_ASSERT("At least one 'extract' tag is required.", !extractCfg.empty());

    const ConfigurationType outCfg = m_configuration->findConfigurationElement("out");

    const std::vector< ConfigurationType > outKeyCfg = outCfg->find("key");
    SLM_ASSERT("You must have as many 'from' tags as 'out' keys.", extractCfg.size() == outKeyCfg.size());

    for(ConfigurationType cfg : extractCfg)
    {
        SLM_ASSERT("Missing attribute 'from'.", cfg->hasAttribute("from"));
        const std::string from = cfg->getAttributeValue("from");

        m_sourcePaths.push_back(from);
    }
}

//-----------------------------------------------------------------------------

void SExtractObj::starting()
{
}

//-----------------------------------------------------------------------------

void SExtractObj::updating()
{
    auto sourceObject = this->getInOut< ::fwData::Object >("source");

    size_t index = 0;
    for(auto path : m_sourcePaths)
    {
        const std::string from = path;

        ::fwData::Object::sptr object;
        try
        {
            object = ::fwDataCamp::getObject( sourceObject, from, true );
        }
        catch(::fwDataCamp::exception::NullPointer&)
        {
            this->setOutput("target", nullptr, index);
        }
        catch(::fwDataCamp::exception::ObjectNotFound&)
        {
            SLM_WARN("Object from '"+ from +"' not found");
        }
        catch(std::exception& e)
        {
            OSLM_FATAL("Unhandled exception: " << e.what());
        }

        SLM_WARN_IF("Object from '"+ from +"' not found", !object);
        if(object)
        {
            this->setOutput("target", object, index);
        }
        ++index;
    }
}

//-----------------------------------------------------------------------------

void SExtractObj::stopping()
{
    // Unregister outputs
    for (size_t i = 0; i < this->getKeyGroupSize("target"); ++i)
    {
        this->setOutput("target", nullptr, i);
    }
}

//-----------------------------------------------------------------------------

} // namespace ctrlCamp