Configure subnetwork trace

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Get a server-defined trace configuration for a given tier and modify its traversability scope, add new condition barriers and control what is included in the subnetwork trace result.

screenshot

Use case

While some traces are built from an ad-hoc group of parameters, many are based on a variation of the trace configuration taken from the subnetwork definition. For example, an electrical trace will be based on the trace configuration of the subnetwork, but may add additional clauses to constrain the trace along a single phase. Similarly, a trace in a gas or electric design application may include features with a status of "In Design" that are normally excluded from trace results.

How to use the sample

The sample loads with a server-defined trace configuration from a tier. Check or uncheck which options to include in the trace - such as containers or barriers. Use the selection boxes to define a new condition network attribute comparison, and then use 'Add' to add the it to the trace configuration. Click 'Trace' to run a subnetwork trace with this modified configuration from a default starting location.

Example barrier conditions for the default dataset:

'Transformer Load' Equal '15'
'Phases Current' DoesNotIncludeTheValues 'A'
'Generation KW' LessThan '50'

How it works

Create and load a UtilityNetwork with a feature service URL, then get an asset type and a tier by their names.
Populate the choice list for the comparison source with the non-system defined Definition::networkAttributes. Populate the choice list for the comparison operator with the enum values from UtilityAttributeComparisonOperator.
Create a UtilityElement from this asset type to use as the starting location for the trace.
Update the selected barrier expression and the checked options in the UI using this tier's TraceConfiguration.
When 'Network Attribute' is selected, if its Domain is a CodedValueDomain, populate the choice list for the comparison value with its CodedValues. Otherwise, display a free-form textbox for entering an attribute value.
When 'Add' is clicked, create a new UtilityNetworkAttributeComparison using the selected comparison source, operator, and selected or typed value. Use the selected source's NetworkAttribute::dataType to convert the comparison value to the correct data type.
If the Traversability's list of Barriers is not empty, create a UtilityTraceOrCondition with the existing Barriers and the new comparison from Step 6.
When 'Trace' is clicked, create UtilityTraceParameters passing in UtilityTraceType::subnetwork and the default starting location. Set its TraceConfiguration with the modified options, selections, and expression; then run a UtilityNetwork::traceAsync.
When Reset is clicked, set the trace configurations expression back to its original value.
Display the count of returned UtilityElementTraceResult::elements.

Relevant API

CodedValueDomain
UtilityAssetType
UtilityAttributeComparisonOperator
UtilityCategory
UtilityCategoryComparison
UtilityCategoryComparisonOperator
UtilityDomainNetwork
UtilityElement
UtilityElementTraceResult
UtilityNetwork
UtilityNetworkAttribute
UtilityNetworkAttributeComparison
UtilityNetworkDefinition
UtilityTerminal
UtilityTier
UtilityTraceAndCondition
UtilityTraceConfiguration
UtilityTraceOrCondition
UtilityTraceParameters
UtilityTraceResult
UtilityTraceType
UtilityTraversability

About the data

The Naperville electrical network feature service, hosted on ArcGIS Online, contains a utility network used to run the subnetwork-based trace shown in this sample.

Additional information

Using utility network on ArcGIS Enterprise 10.8 requires an ArcGIS Enterprise member account licensed with the Utility Network user type extension. Please refer to the utility network services documentation.

Credentials:

Username: viewer01
Password: I68VGU^nMurF

Sample Code

ConfigureSubnetworkTrace.cpp

ConfigureSubnetworkTrace.h

ConfigureSubnetworkTrace.qml

Use dark colors for code blocksCopy
// [WriteFile Name=ConfigureSubnetworkTrace, Category=UtilityNetwork]
// [Legal]
// Copyright 2020 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

// sample headers
#include "ConfigureSubnetworkTrace.h"

// ArcGIS Maps SDK headers
#include "CodedValueDomain.h"
#include "Credential.h"
#include "Error.h"
#include "UtilityAssetGroup.h"
#include "UtilityAssetType.h"
#include "UtilityCategory.h"
#include "UtilityCategoryComparison.h"
#include "UtilityDomainNetwork.h"
#include "UtilityElement.h"
#include "UtilityElementTraceResult.h"
#include "UtilityNetwork.h"
#include "UtilityNetworkDefinition.h"
#include "UtilityNetworkSource.h"
#include "UtilityNetworkTypes.h"
#include "UtilityTerminal.h"
#include "UtilityTerminalConfiguration.h"
#include "UtilityTier.h"
#include "UtilityTraceAndCondition.h"
#include "UtilityTraceConfiguration.h"
#include "UtilityTraceOrCondition.h"
#include "UtilityTraceParameters.h"
#include "UtilityTraceResultListModel.h"
#include "UtilityTraversability.h"

// Qt headers
#include <QFuture>
#include <QQmlEngine>

// STL headers
#include <algorithm>

using namespace Esri::ArcGISRuntime;

ConfigureSubnetworkTrace::ConfigureSubnetworkTrace(QObject* parent /* = nullptr */):
  QObject(parent),
  m_cred(new Credential("viewer01", "I68VGU^nMurF", this))
{
  m_utilityNetwork = new UtilityNetwork(m_featureLayerUrl, m_cred, this);

  connect(m_utilityNetwork, &UtilityNetwork::doneLoading, this, &ConfigureSubnetworkTrace::onUtilityNetworkLoaded);

  m_utilityNetwork->load();
}

QString ConfigureSubnetworkTrace::expressionToString(UtilityTraceConditionalExpression* expression)
{
  switch (expression->traceConditionType())
  {
    case UtilityTraceConditionType::UtilityNetworkAttributeComparison:
    {
      const UtilityNetworkAttributeComparison* attributeExpression = static_cast<UtilityNetworkAttributeComparison*>(expression);
      const UtilityNetworkAttribute* networkAttribute = attributeExpression->networkAttribute();
      const UtilityNetworkAttribute* otherNetworkAttribute = attributeExpression->otherNetworkAttribute();
      const Domain networkDomain = networkAttribute->domain();
      const QString operatorAsString = comparisonOperatorToString(attributeExpression->comparisonOperator());

      // check if attribute domain is a coded value domain.
      if (!networkDomain.isEmpty() && (networkDomain.domainType() == DomainType::CodedValueDomain))
      {
        const CodedValueDomain codedValueDomain = static_cast<CodedValueDomain>(networkDomain);
        const QList<CodedValue> codedValues = codedValueDomain.codedValues();

        // get the coded value using the value as the index for the list of coded values
        const QString codedValueName = codedValues[attributeExpression->value().toInt()].name();

        return QString("`%1` %2 `%3`").arg(networkAttribute->name(), operatorAsString, codedValueName);
      }
      else
      {
        if (otherNetworkAttribute)
        {
          return QString("`%1` %2 `%3`").arg(networkAttribute->name(), operatorAsString, otherNetworkAttribute->name());
        }
        return QString("`%1` %2 `%3`").arg(networkAttribute->name(), operatorAsString, attributeExpression->value().toString());
      }
    }
    case UtilityTraceConditionType::UtilityCategoryComparison:
    {
      const UtilityCategoryComparison* comparisonExpression = static_cast<UtilityCategoryComparison*>(expression);

      return QString("`%1` %2").arg(comparisonExpression->category()->name(), (comparisonExpression->comparisonOperator() == UtilityCategoryComparisonOperator::Exists) ? "Exists" : "DoesNotExist");
    }
    case UtilityTraceConditionType::UtilityTraceAndCondition:
    {
      const UtilityTraceAndCondition* andExpression = static_cast<UtilityTraceAndCondition*>(expression);

      return QString("(%1) AND\n (%2)").arg(expressionToString(andExpression->leftExpression()), expressionToString(andExpression->rightExpression()));
    }
    case UtilityTraceConditionType::UtilityTraceOrCondition:
    {
      const UtilityTraceOrCondition* orExpression = static_cast<UtilityTraceOrCondition*>(expression);
      return QString("(%1) OR\n (%2)").arg(expressionToString(orExpression->leftExpression()), expressionToString(orExpression->rightExpression()));
    }
    default:
      return QString("Unknown trace conditional expression");
  }
}

QString ConfigureSubnetworkTrace::comparisonOperatorToString(const UtilityAttributeComparisonOperator& comparisonOperator)
{
  switch (comparisonOperator)
  {
    case UtilityAttributeComparisonOperator::Equal:
      return QString("Equal");
    case UtilityAttributeComparisonOperator::NotEqual:
      return QString("NotEqual");
    case UtilityAttributeComparisonOperator::GreaterThan:
      return QString("GreaterThan");
    case UtilityAttributeComparisonOperator::GreaterThanEqual:
      return QString("GreaterThanEqual");
    case UtilityAttributeComparisonOperator::LessThan:
      return QString("LessThan");
    case UtilityAttributeComparisonOperator::LessThanEqual:
      return QString("LessThanEqual");
    case UtilityAttributeComparisonOperator::IncludesTheValues:
      return QString("IncludesTheValues");
    case UtilityAttributeComparisonOperator::DoesNotIncludeTheValues:
      return QString("DoesNotIncludeTheValues");
    case UtilityAttributeComparisonOperator::IncludesAny:
      return QString("IncludesAny");
    case UtilityAttributeComparisonOperator::DoesNotIncludeAny:
      return QString("DoesNotIncludeAny");
    default:
      return QString("Unknown comparison operator");
  }
}

QVariant ConfigureSubnetworkTrace::convertToDataType(const QVariant& value, const Esri::ArcGISRuntime::UtilityNetworkAttributeDataType& dataType)
{
  switch (dataType)
  {
    case UtilityNetworkAttributeDataType::Integer:
    {
      // inconsistent results when using QVariant.toInt() on a
      // QString that doesn't contain an Integer dataType.
      // e.g. QVariant(QString("123.321")).toInt();
      return static_cast<int>(value.toDouble());
    }
    case UtilityNetworkAttributeDataType::Float:
    {
      return value.toFloat();
    }
    case UtilityNetworkAttributeDataType::Double:
    {
      return value.toDouble();
    }
    case UtilityNetworkAttributeDataType::Boolean:
    {
      return value.toBool();
    }
    default:
      return QVariant();
  }
}

void ConfigureSubnetworkTrace::codedValueOrInputText(const QString& currentText)
{
  // Update the UI to show the correct value entry for the attribute.
  if (m_networkDefinition)
  {
    const Domain domain = m_networkDefinition->networkAttribute(currentText)->domain();
    if (!domain.isEmpty() && (domain.domainType() == DomainType::CodedValueDomain))
    {
      m_valueSelectionListModel.clear();
      const CodedValueDomain codedValueDomain = static_cast<CodedValueDomain>(domain);

      const auto values = codedValueDomain.codedValues();
      for (const CodedValue& codedValue: values)
        m_valueSelectionListModel.append(codedValue.name());

      m_textFieldVisible = false;
    }
    else
    {
      m_textFieldVisible = true;
    }
    emit valueSelectionListModelChanged();
    emit textFieldVisibleChanged();
  }
}

void ConfigureSubnetworkTrace::addCondition(const QString& selectedAttribute, int selectedOperator, const QVariant& selectedValue)
{
  // NOTE: You may also create a UtilityCategoryComparison with UtilityNetworkDefinition.Categories and UtilityCategoryComparisonOperator.

  UtilityNetworkAttribute* selectedNetworkAttribute = m_networkDefinition->networkAttribute(selectedAttribute);
  const QVariant convertedSelectedValue = convertToDataType(selectedValue, selectedNetworkAttribute->dataType());

  if (convertedSelectedValue.isNull())
  {
    m_dialogText = "Unknow network attribute data type";
    emit dialogTextChanged();
    emit showDialog();
    return;
  }

  const UtilityAttributeComparisonOperator selectedOperatorEnum = static_cast<UtilityAttributeComparisonOperator>(selectedOperator);

  // NOTE: You may also create a UtilityNetworkAttributeComparison with another NetworkAttribute.
  UtilityTraceConditionalExpression* expression = new UtilityNetworkAttributeComparison(selectedNetworkAttribute, selectedOperatorEnum, convertedSelectedValue, this);

  UtilityTraceConditionalExpression* otherExpression = static_cast<UtilityTraceConditionalExpression*>(m_traceConfiguration->traversability()->barriers());

  // NOTE: You may also combine expressions with UtilityTraceAndCondition
  UtilityTraceConditionalExpression* combineExpressions = new UtilityTraceOrCondition(otherExpression, expression, this);

  m_expressionBuilder = expressionToString(combineExpressions);
  emit expressionBuilderChanged();

  if (m_traceConfiguration)
    m_traceConfiguration->traversability()->setBarriers(combineExpressions);
}

void ConfigureSubnetworkTrace::changeIncludeBarriersState(bool includeBarriers)
{
  if (m_traceConfiguration)
    m_traceConfiguration->setIncludeBarriers(includeBarriers);
}

void ConfigureSubnetworkTrace::changeIncludeContainersState(bool includeContainers)
{
  if (m_traceConfiguration)
    m_traceConfiguration->setIncludeContainers(includeContainers);
}

void ConfigureSubnetworkTrace::reset()
{
  // Reset the barrier condition to the initial value.
  m_traceConfiguration->traversability()->setBarriers(m_initialExpression);
  m_expressionBuilder.clear();
  m_expressionBuilder = expressionToString(static_cast<UtilityTraceConditionalExpression*>(m_initialExpression));
  emit expressionBuilderChanged();
}

void ConfigureSubnetworkTrace::trace()
{
  if (!m_utilityNetwork || !m_utilityElementStartingLocation)
  {
    return;
  }

  m_busy = true;
  emit busyChanged();
  const QList<UtilityElement*> startingLocations {m_utilityElementStartingLocation};
  // Create utility trace parameters for the starting location.
  m_traceParams = new UtilityTraceParameters(UtilityTraceType::Subnetwork, startingLocations, this);
  m_traceParams->setTraceConfiguration(m_traceConfiguration);

  // trace the network
  m_utilityNetwork->traceAsync(m_traceParams).then(this, [this](QList<UtilityTraceResult*>)
  {
    onTraceCompleted_();
  });
}

void ConfigureSubnetworkTrace::onTraceCompleted_()
{
  if (m_utilityNetwork->traceResult()->isEmpty())
  {
    m_dialogText = "No results returned";
    emit dialogTextChanged();
    emit showDialog();
    return;
  }
  // Get the first result.
  UtilityTraceResult* result = m_utilityNetwork->traceResult()->at(0);

  const QList<UtilityElement*> elements = static_cast<UtilityElementTraceResult*>(result)->elements(this);

  // Display the number of elements found by the trace.
  m_dialogText = QString("%1 elements found.").arg(elements.length());
  m_busy = false;
  emit dialogTextChanged();
  emit showDialog();
  emit busyChanged();
}

void ConfigureSubnetworkTrace::onUtilityNetworkLoaded(const Error& e)
{
  if (!e.isEmpty())
  {
    m_dialogText = QString("%1 - %2").arg(e.message(), e.additionalMessage());
    m_busy = false;
    emit dialogTextChanged();
    emit showDialog();
    emit busyChanged();
    return;
  }

  m_busy = false;
  emit busyChanged();
  m_networkDefinition = m_utilityNetwork->definition();

  // Build the choice lists for network attribute comparison.
  const auto attributes = m_networkDefinition->networkAttributes();
  for (UtilityNetworkAttribute* networkAttribute : attributes)
  {
    if (!networkAttribute->isSystemDefined())
      m_attributeListModel.append(networkAttribute->name());
  }
  emit attributeListModelChanged();

  // Create a default starting location.
  const UtilityNetworkSource* networkSource = m_networkDefinition->networkSource(m_deviceTableName);
  const UtilityAssetGroup* assetGroup = networkSource->assetGroup(m_assetGroupName);
  UtilityAssetType* assetType = assetGroup->assetType(m_assetTypeName);
  m_utilityElementStartingLocation = m_utilityNetwork->createElementWithAssetType(assetType, m_gloabId);

  QList<UtilityTerminal*> terminals = m_utilityElementStartingLocation->assetType()->terminalConfiguration()->terminals();

  // Set the terminal for this location. (For our case, we use the 'Load' terminal.)
  auto terminal = std::find_if(terminals.begin(), terminals.end(), [](UtilityTerminal* terminal)
  {
      return terminal->name() == "Load";
  });

  m_utilityElementStartingLocation->setTerminal(static_cast<UtilityTerminal*>(*terminal));

  // Get a default trace configuration from a tier to update the UI.
  const UtilityDomainNetwork* domainNetwork = m_networkDefinition->domainNetwork(m_domainNetworkName);
  const UtilityTier* utilityTierSource = domainNetwork->tier(m_tierName);

  // Set the trace configuration.
  m_traceConfiguration = utilityTierSource->defaultTraceConfiguration();

  m_initialExpression = m_traceConfiguration->traversability()->barriers();

  if (m_initialExpression)
  {
    m_expressionBuilder = expressionToString(static_cast<UtilityTraceConditionalExpression*>(m_initialExpression));
    emit expressionBuilderChanged();
  }

  // Set the traversability scope.
  utilityTierSource->defaultTraceConfiguration()->traversability()->setScope(UtilityTraversabilityScope::Junctions);
}

ConfigureSubnetworkTrace::~ConfigureSubnetworkTrace() = default;

void ConfigureSubnetworkTrace::init()
{
  qmlRegisterType<ConfigureSubnetworkTrace>("Esri.Samples", 1, 0, "ConfigureSubnetworkTraceSample");
}