01f93ffe
 Steven de Ridder
licences missing
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
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5251bf3a
Steven de Ridder
Initial commit. d...
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#include "timeline.h"
#include "log.h"
using namespace osdev::components;
Timeline::Timeline()
: m_timeline(10)
, m_proposedChange()
{
}
const OrmBatchChange& Timeline::evaluate(const OrmBatchChange& desiredChange, bool exclusiveUpdate)
{
m_proposedChange = OrmBatchChange {};
if (m_timeline.full() && desiredChange < m_timeline.front())
{
LogWarning("[Timeline::evaluate]", QString("Incoming change (%1) is older then the oldest registered change (%2).").arg(desiredChange.timestamp().toString()).arg(m_timeline.front().timestamp().toString()));
return m_proposedChange; // change is older then anything we know, discard.
}
m_proposedChange = desiredChange;
for (const auto& ch : m_timeline)
{
if (!m_proposedChange.processChange(ch, exclusiveUpdate))
{
break;
}
}
if ( m_proposedChange.valid()
&& !m_timeline.empty()
&& m_proposedChange < m_timeline.back())
{
// reset the timestamp so that the proposed change will be the latest in the timeline when committed.
auto ts = m_timeline.back().timestamp();
m_proposedChange.setTimestamp(++ts);
}
return m_proposedChange;
}
void Timeline::commit()
{
if (m_proposedChange.valid())
{
m_timeline.push_back(m_proposedChange);
m_proposedChange = OrmBatchChange {};
}
}
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