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qgsprocessingmodelalgorithm.cpp
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qgsprocessingmodelalgorithm.cpp
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/***************************************************************************
qgsprocessingmodelalgorithm.cpp
------------------------------
begin : June 2017
copyright : (C) 2017 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsprocessingmodelalgorithm.h"
#include "qgsprocessingregistry.h"
#include "qgsprocessingfeedback.h"
#include "qgsprocessingutils.h"
#include "qgsxmlutils.h"
#include "qgsexception.h"
#include <QFile>
#include <QTextStream>
///@cond NOT_STABLE
QgsProcessingModelAlgorithm::ChildAlgorithm::ChildAlgorithm( const QString &algorithmId )
: mAlgorithmId( algorithmId )
{
}
const QgsProcessingAlgorithm *QgsProcessingModelAlgorithm::ChildAlgorithm::algorithm() const
{
return QgsApplication::processingRegistry()->algorithmById( mAlgorithmId );
}
QString QgsProcessingModelAlgorithm::Component::description() const
{
return mDescription;
}
void QgsProcessingModelAlgorithm::Component::setDescription( const QString &description )
{
mDescription = description;
}
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources> QgsProcessingModelAlgorithm::ChildAlgorithm::parameterSources() const
{
return mParams;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setParameterSources( const QMap< QString, QgsProcessingModelAlgorithm::ChildParameterSources > ¶ms )
{
mParams = params;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::addParameterSources( const QString &name, const ChildParameterSources &source )
{
mParams.insert( name, source );
}
bool QgsProcessingModelAlgorithm::ChildAlgorithm::isActive() const
{
return mActive;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setActive( bool active )
{
mActive = active;
}
QPointF QgsProcessingModelAlgorithm::Component::position() const
{
return mPosition;
}
void QgsProcessingModelAlgorithm::Component::setPosition( const QPointF &position )
{
mPosition = position;
}
QgsProcessingModelAlgorithm::Component::Component( const QString &description )
: mDescription( description )
{}
void QgsProcessingModelAlgorithm::Component::saveCommonProperties( QVariantMap &map ) const
{
map.insert( QStringLiteral( "component_pos_x" ), mPosition.x() );
map.insert( QStringLiteral( "component_pos_y" ), mPosition.y() );
map.insert( QStringLiteral( "component_description" ), mDescription );
}
void QgsProcessingModelAlgorithm::Component::restoreCommonProperties( const QVariantMap &map )
{
QPointF pos;
pos.setX( map.value( QStringLiteral( "component_pos_x" ) ).toDouble() );
pos.setY( map.value( QStringLiteral( "component_pos_y" ) ).toDouble() );
mPosition = pos;
mDescription = map.value( QStringLiteral( "component_description" ) ).toString();
}
QStringList QgsProcessingModelAlgorithm::ChildAlgorithm::dependencies() const
{
return mDependencies;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setDependencies( const QStringList &dependencies )
{
mDependencies = dependencies;
}
bool QgsProcessingModelAlgorithm::ChildAlgorithm::outputsCollapsed() const
{
return mOutputsCollapsed;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setOutputsCollapsed( bool outputsCollapsed )
{
mOutputsCollapsed = outputsCollapsed;
}
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> QgsProcessingModelAlgorithm::ChildAlgorithm::modelOutputs() const
{
return mModelOutputs;
}
QgsProcessingModelAlgorithm::ModelOutput &QgsProcessingModelAlgorithm::ChildAlgorithm::modelOutput( const QString &name )
{
return mModelOutputs[ name ];
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setModelOutputs( const QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> &modelOutputs )
{
mModelOutputs = modelOutputs;
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput>::iterator outputIt = mModelOutputs.begin();
for ( ; outputIt != mModelOutputs.end(); ++outputIt )
{
// make sure values are consistent
outputIt->setName( outputIt.key() );
outputIt->setChildId( mId );
}
}
QVariant QgsProcessingModelAlgorithm::ChildAlgorithm::toVariant() const
{
QVariantMap map;
map.insert( QStringLiteral( "id" ), mId );
map.insert( QStringLiteral( "alg_id" ), mAlgorithmId );
map.insert( QStringLiteral( "active" ), mActive );
map.insert( QStringLiteral( "dependencies" ), mDependencies );
map.insert( QStringLiteral( "parameters_collapsed" ), mParametersCollapsed );
map.insert( QStringLiteral( "outputs_collapsed" ), mOutputsCollapsed );
saveCommonProperties( map );
QVariantMap paramMap;
QMap< QString, QgsProcessingModelAlgorithm::ChildParameterSources >::const_iterator paramIt = mParams.constBegin();
for ( ; paramIt != mParams.constEnd(); ++paramIt )
{
QVariantList sources;
Q_FOREACH ( const ChildParameterSource &source, paramIt.value() )
{
sources << source.toVariant();
}
paramMap.insert( paramIt.key(), sources );
}
map.insert( "params", paramMap );
QVariantMap outputMap;
QMap< QString, QgsProcessingModelAlgorithm::ModelOutput >::const_iterator outputIt = mModelOutputs.constBegin();
for ( ; outputIt != mModelOutputs.constEnd(); ++outputIt )
{
outputMap.insert( outputIt.key(), outputIt.value().toVariant() );
}
map.insert( "outputs", outputMap );
return map;
}
bool QgsProcessingModelAlgorithm::ChildAlgorithm::loadVariant( const QVariant &child )
{
QVariantMap map = child.toMap();
mId = map.value( QStringLiteral( "id" ) ).toString();
mAlgorithmId = map.value( QStringLiteral( "alg_id" ) ).toString();
mActive = map.value( QStringLiteral( "active" ) ).toBool();
mDependencies = map.value( QStringLiteral( "dependencies" ) ).toStringList();
mParametersCollapsed = map.value( QStringLiteral( "parameters_collapsed" ) ).toBool();
mOutputsCollapsed = map.value( QStringLiteral( "outputs_collapsed" ) ).toBool();
restoreCommonProperties( map );
mParams.clear();
QVariantMap paramMap = map.value( QStringLiteral( "params" ) ).toMap();
QVariantMap::const_iterator paramIt = paramMap.constBegin();
for ( ; paramIt != paramMap.constEnd(); ++paramIt )
{
ChildParameterSources sources;
Q_FOREACH ( const QVariant &sourceVar, paramIt->toList() )
{
ChildParameterSource param;
if ( !param.loadVariant( sourceVar.toMap() ) )
return false;
sources << param;
}
mParams.insert( paramIt.key(), sources );
}
mModelOutputs.clear();
QVariantMap outputMap = map.value( QStringLiteral( "outputs" ) ).toMap();
QVariantMap::const_iterator outputIt = outputMap.constBegin();
for ( ; outputIt != outputMap.constEnd(); ++outputIt )
{
ModelOutput output;
if ( !output.loadVariant( outputIt.value().toMap() ) )
return false;
mModelOutputs.insert( outputIt.key(), output );
}
return true;
}
QString QgsProcessingModelAlgorithm::ChildAlgorithm::asPythonCode() const
{
QStringList lines;
if ( !algorithm() )
return QString();
QStringList paramParts;
QMap< QString, QgsProcessingModelAlgorithm::ChildParameterSources >::const_iterator paramIt = mParams.constBegin();
for ( ; paramIt != mParams.constEnd(); ++paramIt )
{
QStringList sourceParts;
Q_FOREACH ( const ChildParameterSource &source, paramIt.value() )
{
QString part = source.asPythonCode();
if ( !part.isEmpty() )
sourceParts << QStringLiteral( "'%1':%2" ).arg( paramIt.key(), part );
}
if ( sourceParts.count() == 1 )
paramParts << sourceParts.at( 0 );
else
paramParts << QStringLiteral( "[%1]" ).arg( paramParts.join( ',' ) );
}
lines << QStringLiteral( "outputs['%1']=processing.run('%2', {%3}, context=context, feedback=feedback)" ).arg( mId, mAlgorithmId, paramParts.join( ',' ) );
QMap< QString, QgsProcessingModelAlgorithm::ModelOutput >::const_iterator outputIt = mModelOutputs.constBegin();
for ( ; outputIt != mModelOutputs.constEnd(); ++outputIt )
{
lines << QStringLiteral( "results['%1']=outputs['%2']['%3']" ).arg( outputIt.key(), mId, outputIt.value().childOutputName() );
}
return lines.join( '\n' );
}
bool QgsProcessingModelAlgorithm::ChildAlgorithm::parametersCollapsed() const
{
return mParametersCollapsed;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setParametersCollapsed( bool parametersCollapsed )
{
mParametersCollapsed = parametersCollapsed;
}
QString QgsProcessingModelAlgorithm::ChildAlgorithm::childId() const
{
return mId;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setChildId( const QString &id )
{
mId = id;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::generateChildId( const QgsProcessingModelAlgorithm &model )
{
int i = 1;
QString id;
while ( true )
{
id = QStringLiteral( "%1_%2" ).arg( mAlgorithmId ).arg( i );
if ( !model.childAlgorithms().contains( id ) )
break;
i++;
}
mId = id;
}
QString QgsProcessingModelAlgorithm::ChildAlgorithm::algorithmId() const
{
return mAlgorithmId;
}
void QgsProcessingModelAlgorithm::ChildAlgorithm::setAlgorithmId( const QString &algorithmId )
{
mAlgorithmId = algorithmId;
}
//
// QgsProcessingModelAlgorithm
//
QgsProcessingModelAlgorithm::QgsProcessingModelAlgorithm( const QString &name, const QString &group )
: QgsProcessingAlgorithm()
, mModelName( name.isEmpty() ? QObject::tr( "model" ) : name )
, mModelGroup( group )
{}
QString QgsProcessingModelAlgorithm::name() const
{
return mModelName;
}
QString QgsProcessingModelAlgorithm::displayName() const
{
return mModelName;
}
QString QgsProcessingModelAlgorithm::group() const
{
return mModelGroup;
}
QIcon QgsProcessingModelAlgorithm::icon() const
{
return QgsApplication::getThemeIcon( QStringLiteral( "/processingModel.svg" ) );
}
QString QgsProcessingModelAlgorithm::svgIconPath() const
{
return QgsApplication::iconPath( QStringLiteral( "processingModel.svg" ) );
}
QString QgsProcessingModelAlgorithm::shortHelpString() const
{
if ( mHelpContent.contains( QStringLiteral( "ALG_DESC" ) ) )
return mHelpContent.value( QStringLiteral( "ALG_DESC" ) ).toString();
return QString();
}
QString QgsProcessingModelAlgorithm::helpUrl() const
{
return QgsProcessingUtils::formatHelpMapAsHtml( mHelpContent, this );
}
QVariantMap QgsProcessingModelAlgorithm::parametersForChildAlgorithm( const ChildAlgorithm &child, const QVariantMap &modelParameters, const QMap< QString, QVariantMap > &results ) const
{
QVariantMap childParams;
Q_FOREACH ( const QgsProcessingParameterDefinition *def, child.algorithm()->parameterDefinitions() )
{
if ( def->flags() & QgsProcessingParameterDefinition::FlagHidden )
continue;
if ( !def->isDestination() )
{
if ( !child.parameterSources().contains( def->name() ) )
continue; // use default value
ChildParameterSources paramSources = child.parameterSources().value( def->name() );
QVariantList paramParts;
Q_FOREACH ( const ChildParameterSource &source, paramSources )
{
switch ( source.source() )
{
case ChildParameterSource::StaticValue:
paramParts << source.staticValue();
break;
case ChildParameterSource::ModelParameter:
paramParts << modelParameters.value( source.parameterName() );
break;
case ChildParameterSource::ChildOutput:
{
QVariantMap linkedChildResults = results.value( source.outputChildId() );
paramParts << linkedChildResults.value( source.outputName() );
break;
}
}
}
if ( paramParts.count() == 1 )
childParams.insert( def->name(), paramParts.at( 0 ) );
else
childParams.insert( def->name(), paramParts );
}
else
{
const QgsProcessingDestinationParameter *destParam = static_cast< const QgsProcessingDestinationParameter * >( def );
// is destination linked to one of the final outputs from this model?
bool isFinalOutput = false;
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> outputs = child.modelOutputs();
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput>::const_iterator outputIt = outputs.constBegin();
for ( ; outputIt != outputs.constEnd(); ++outputIt )
{
if ( outputIt->childOutputName() == destParam->name() )
{
QString paramName = child.childId() + ':' + outputIt.key();
if ( modelParameters.contains( paramName ) )
{
QVariant value = modelParameters.value( paramName );
if ( value.canConvert<QgsProcessingOutputLayerDefinition>() )
{
// make sure layout output name is correctly set
QgsProcessingOutputLayerDefinition fromVar = qvariant_cast<QgsProcessingOutputLayerDefinition>( value );
fromVar.destinationName = outputIt.key();
value = QVariant::fromValue( fromVar );
}
childParams.insert( destParam->name(), value );
}
isFinalOutput = true;
break;
}
}
if ( !isFinalOutput )
{
// output is temporary
// check whether it's optional, and if so - is it required?
bool required = true;
if ( destParam->flags() & QgsProcessingParameterDefinition::FlagOptional )
{
required = childOutputIsRequired( child.childId(), destParam->name() );
}
// not optional, or required elsewhere in model
if ( required )
childParams.insert( destParam->name(), destParam->generateTemporaryDestination() );
}
}
}
return childParams;
}
bool QgsProcessingModelAlgorithm::childOutputIsRequired( const QString &childId, const QString &outputName ) const
{
// look through all child algs
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( childIt->childId() == childId || !childIt->isActive() )
continue;
// look through all sources for child
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources> candidateChildParams = childIt->parameterSources();
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources>::const_iterator childParamIt = candidateChildParams.constBegin();
for ( ; childParamIt != candidateChildParams.constEnd(); ++childParamIt )
{
Q_FOREACH ( const ChildParameterSource &source, childParamIt.value() )
{
if ( source.source() == ChildParameterSource::ChildOutput
&& source.outputChildId() == childId
&& source.outputName() == outputName )
{
return true;
}
}
}
}
return false;
}
QVariantMap QgsProcessingModelAlgorithm::processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) const
{
QSet< QString > toExecute;
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( childIt->isActive() && childIt->algorithm() )
toExecute.insert( childIt->childId() );
}
QTime totalTime;
totalTime.start();
QMap< QString, QVariantMap > childResults;
QVariantMap finalResults;
QSet< QString > executed;
bool executedAlg = true;
while ( executedAlg && executed.count() < toExecute.count() )
{
executedAlg = false;
Q_FOREACH ( const QString &childId, toExecute )
{
if ( executed.contains( childId ) )
continue;
bool canExecute = true;
Q_FOREACH ( const QString &dependency, dependsOnChildAlgorithms( childId ) )
{
if ( !executed.contains( dependency ) )
{
canExecute = false;
break;
}
}
if ( !canExecute )
continue;
executedAlg = true;
feedback->pushDebugInfo( QObject::tr( "Prepare algorithm: %1" ).arg( childId ) );
const ChildAlgorithm &child = mChildAlgorithms[ childId ];
QVariantMap childParams = parametersForChildAlgorithm( child, parameters, childResults );
feedback->setProgressText( QObject::tr( "Running %1 [%2/%3]" ).arg( child.description() ).arg( executed.count() + 1 ).arg( toExecute.count() ) );
//feedback->pushDebugInfo( "Parameters: " + ', '.join( [str( p ).strip() +
// '=' + str( p.value ) for p in alg.algorithm.parameters] ) )
QTime childTime;
childTime.start();
bool ok = false;
QVariantMap results = child.algorithm()->run( childParams, context, feedback, &ok );
if ( !ok )
{
QString error = QObject::tr( "Error encountered while running %1" ).arg( child.description() );
feedback->reportError( error );
throw QgsProcessingException( error );
}
childResults.insert( childId, results );
// look through child alg's outputs to determine whether any of these should be copied
// to the final model outputs
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> outputs = child.modelOutputs();
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput>::const_iterator outputIt = outputs.constBegin();
for ( ; outputIt != outputs.constEnd(); ++outputIt )
{
finalResults.insert( childId + ':' + outputIt->name(), results.value( outputIt->childOutputName() ) );
}
executed.insert( childId );
feedback->pushDebugInfo( QObject::tr( "OK. Execution took %1 s (%2 outputs)." ).arg( childTime.elapsed() / 1000.0 ).arg( results.count() ) );
}
}
feedback->pushDebugInfo( QObject::tr( "Model processed OK. Executed %1 algorithms total in %2 s." ).arg( executed.count() ).arg( totalTime.elapsed() / 1000.0 ) );
return finalResults;
}
QString QgsProcessingModelAlgorithm::sourceFilePath() const
{
return mSourceFile;
}
void QgsProcessingModelAlgorithm::setSourceFilePath( const QString &sourceFile )
{
mSourceFile = sourceFile;
}
QString QgsProcessingModelAlgorithm::asPythonCode() const
{
QStringList lines;
lines << QStringLiteral( "##%1=name" ).arg( name() );
QMap< QString, ModelParameter >::const_iterator paramIt = mParameterComponents.constBegin();
for ( ; paramIt != mParameterComponents.constEnd(); ++paramIt )
{
QString name = paramIt.value().parameterName();
if ( parameterDefinition( name ) )
{
lines << parameterDefinition( name )->asScriptCode();
}
}
auto safeName = []( const QString & name )->QString
{
QString n = name.toLower().trimmed();
QRegularExpression rx( "[^a-z_]" );
n.replace( rx, QString() );
return n;
};
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( !childIt->isActive() || !childIt->algorithm() )
continue;
// look through all outputs for child
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> outputs = childIt->modelOutputs();
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput>::const_iterator outputIt = outputs.constBegin();
for ( ; outputIt != outputs.constEnd(); ++outputIt )
{
const QgsProcessingOutputDefinition *output = childIt->algorithm()->outputDefinition( outputIt->childOutputName() );
lines << QStringLiteral( "##%1=output %2" ).arg( safeName( outputIt->name() ), output->type() );
}
}
lines << QStringLiteral( "results={}" );
QSet< QString > toExecute;
childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( childIt->isActive() && childIt->algorithm() )
toExecute.insert( childIt->childId() );
}
QSet< QString > executed;
bool executedAlg = true;
while ( executedAlg && executed.count() < toExecute.count() )
{
executedAlg = false;
Q_FOREACH ( const QString &childId, toExecute )
{
if ( executed.contains( childId ) )
continue;
bool canExecute = true;
Q_FOREACH ( const QString &dependency, dependsOnChildAlgorithms( childId ) )
{
if ( !executed.contains( dependency ) )
{
canExecute = false;
break;
}
}
if ( !canExecute )
continue;
executedAlg = true;
const ChildAlgorithm &child = mChildAlgorithms[ childId ];
lines << child.asPythonCode();
executed.insert( childId );
}
}
lines << QStringLiteral( "return results" );
return lines.join( '\n' );
}
QVariantMap QgsProcessingModelAlgorithm::helpContent() const
{
return mHelpContent;
}
void QgsProcessingModelAlgorithm::setHelpContent( const QVariantMap &helpContent )
{
mHelpContent = helpContent;
}
void QgsProcessingModelAlgorithm::setName( const QString &name )
{
mModelName = name;
}
void QgsProcessingModelAlgorithm::setGroup( const QString &group )
{
mModelGroup = group;
}
QMap<QString, QgsProcessingModelAlgorithm::ChildAlgorithm> QgsProcessingModelAlgorithm::childAlgorithms() const
{
return mChildAlgorithms;
}
void QgsProcessingModelAlgorithm::setParameterComponents( const QMap<QString, QgsProcessingModelAlgorithm::ModelParameter> ¶meterComponents )
{
mParameterComponents = parameterComponents;
}
void QgsProcessingModelAlgorithm::setParameterComponent( const QgsProcessingModelAlgorithm::ModelParameter &component )
{
mParameterComponents.insert( component.parameterName(), component );
}
QgsProcessingModelAlgorithm::ModelParameter &QgsProcessingModelAlgorithm::parameterComponent( const QString &name )
{
if ( !mParameterComponents.contains( name ) )
{
QgsProcessingModelAlgorithm::ModelParameter &component = mParameterComponents[ name ];
component.setParameterName( name );
return component;
}
return mParameterComponents[ name ];
}
void QgsProcessingModelAlgorithm::updateDestinationParameters()
{
//delete existing destination parameters
QMutableListIterator<const QgsProcessingParameterDefinition *> it( mParameters );
while ( it.hasNext() )
{
const QgsProcessingParameterDefinition *def = it.next();
if ( def->isDestination() )
{
delete def;
it.remove();
}
}
// also delete outputs
qDeleteAll( mOutputs );
mOutputs.clear();
// rebuild
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput> outputs = childIt->modelOutputs();
QMap<QString, QgsProcessingModelAlgorithm::ModelOutput>::const_iterator outputIt = outputs.constBegin();
for ( ; outputIt != outputs.constEnd(); ++outputIt )
{
if ( !childIt->isActive() || !childIt->algorithm() )
continue;
// child algorithm has a destination parameter set, copy it to the model
const QgsProcessingParameterDefinition *source = childIt->algorithm()->parameterDefinition( outputIt->childOutputName() );
if ( !source )
continue;
QgsProcessingParameterDefinition *param = QgsProcessingParameters::parameterFromVariantMap( source->toVariantMap() );
param->setName( outputIt->childId() + ':' + outputIt->name() );
param->setDescription( outputIt->description() );
addParameter( param );
if ( const QgsProcessingDestinationParameter *destParam = dynamic_cast< const QgsProcessingDestinationParameter *>( param ) )
{
QgsProcessingOutputDefinition *output = destParam->toOutputDefinition();
if ( output )
{
addOutput( output );
}
}
}
}
}
QVariant QgsProcessingModelAlgorithm::toVariant() const
{
QVariantMap map;
map.insert( QStringLiteral( "model_name" ), mModelName );
map.insert( QStringLiteral( "model_group" ), mModelGroup );
map.insert( QStringLiteral( "help" ), mHelpContent );
QVariantMap childMap;
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
childMap.insert( childIt.key(), childIt.value().toVariant() );
}
map.insert( "children", childMap );
QVariantMap paramMap;
QMap< QString, ModelParameter >::const_iterator paramIt = mParameterComponents.constBegin();
for ( ; paramIt != mParameterComponents.constEnd(); ++paramIt )
{
paramMap.insert( paramIt.key(), paramIt.value().toVariant() );
}
map.insert( "parameters", paramMap );
QVariantMap paramDefMap;
Q_FOREACH ( const QgsProcessingParameterDefinition *def, mParameters )
{
paramDefMap.insert( def->name(), def->toVariantMap() );
}
map.insert( "parameterDefinitions", paramDefMap );
return map;
}
bool QgsProcessingModelAlgorithm::loadVariant( const QVariant &model )
{
QVariantMap map = model.toMap();
mModelName = map.value( QStringLiteral( "model_name" ) ).toString();
mModelGroup = map.value( QStringLiteral( "model_group" ) ).toString();
mHelpContent = map.value( QStringLiteral( "help" ) ).toMap();
mChildAlgorithms.clear();
QVariantMap childMap = map.value( QStringLiteral( "children" ) ).toMap();
QVariantMap::const_iterator childIt = childMap.constBegin();
for ( ; childIt != childMap.constEnd(); ++childIt )
{
ChildAlgorithm child;
if ( !child.loadVariant( childIt.value() ) )
return false;
mChildAlgorithms.insert( child.childId(), child );
}
mParameterComponents.clear();
QVariantMap paramMap = map.value( QStringLiteral( "parameters" ) ).toMap();
QVariantMap::const_iterator paramIt = paramMap.constBegin();
for ( ; paramIt != paramMap.constEnd(); ++paramIt )
{
ModelParameter param;
if ( !param.loadVariant( paramIt.value().toMap() ) )
return false;
mParameterComponents.insert( param.parameterName(), param );
}
qDeleteAll( mParameters );
mParameters.clear();
QVariantMap paramDefMap = map.value( QStringLiteral( "parameterDefinitions" ) ).toMap();
QVariantMap::const_iterator paramDefIt = paramDefMap.constBegin();
for ( ; paramDefIt != paramDefMap.constEnd(); ++paramDefIt )
{
QgsProcessingParameterDefinition *param = QgsProcessingParameters::parameterFromVariantMap( paramDefIt.value().toMap() );
if ( !param )
return false;
addParameter( param );
}
updateDestinationParameters();
return true;
}
bool QgsProcessingModelAlgorithm::toFile( const QString &path ) const
{
QDomDocument doc = QDomDocument( "model" );
QDomElement elem = QgsXmlUtils::writeVariant( toVariant(), doc );
doc.appendChild( elem );
QFile file( path );
if ( file.open( QFile::WriteOnly | QFile::Truncate ) )
{
QTextStream stream( &file );
doc.save( stream, 2 );
file.close();
return true;
}
return false;
}
bool QgsProcessingModelAlgorithm::fromFile( const QString &path )
{
QDomDocument doc;
QFile file( path );
if ( file.open( QFile::ReadOnly ) )
{
if ( !doc.setContent( &file ) )
return false;
file.close();
}
QVariant props = QgsXmlUtils::readVariant( doc.firstChildElement() );
return loadVariant( props );
}
void QgsProcessingModelAlgorithm::setChildAlgorithms( const QMap<QString, ChildAlgorithm> &childAlgorithms )
{
mChildAlgorithms = childAlgorithms;
updateDestinationParameters();
}
void QgsProcessingModelAlgorithm::setChildAlgorithm( const QgsProcessingModelAlgorithm::ChildAlgorithm &algorithm )
{
mChildAlgorithms.insert( algorithm.childId(), algorithm );
updateDestinationParameters();
}
QString QgsProcessingModelAlgorithm::addChildAlgorithm( ChildAlgorithm &algorithm )
{
if ( algorithm.childId().isEmpty() || mChildAlgorithms.contains( algorithm.childId() ) )
algorithm.generateChildId( *this );
mChildAlgorithms.insert( algorithm.childId(), algorithm );
updateDestinationParameters();
return algorithm.childId();
}
QgsProcessingModelAlgorithm::ChildAlgorithm &QgsProcessingModelAlgorithm::childAlgorithm( const QString &childId )
{
return mChildAlgorithms[ childId ];
}
bool QgsProcessingModelAlgorithm::removeChildAlgorithm( const QString &id )
{
if ( !dependentChildAlgorithms( id ).isEmpty() )
return false;
mChildAlgorithms.remove( id );
updateDestinationParameters();
return true;
}
void QgsProcessingModelAlgorithm::deactivateChildAlgorithm( const QString &id )
{
Q_FOREACH ( const QString &child, dependentChildAlgorithms( id ) )
{
childAlgorithm( child ).setActive( false );
}
childAlgorithm( id ).setActive( false );
updateDestinationParameters();
}
bool QgsProcessingModelAlgorithm::activateChildAlgorithm( const QString &id )
{
Q_FOREACH ( const QString &child, dependsOnChildAlgorithms( id ) )
{
if ( !childAlgorithm( child ).isActive() )
return false;
}
childAlgorithm( id ).setActive( true );
updateDestinationParameters();
return true;
}
void QgsProcessingModelAlgorithm::addModelParameter( QgsProcessingParameterDefinition *definition, const QgsProcessingModelAlgorithm::ModelParameter &component )
{
addParameter( definition );
mParameterComponents.insert( definition->name(), component );
}
void QgsProcessingModelAlgorithm::updateModelParameter( QgsProcessingParameterDefinition *definition )
{
removeParameter( definition->name() );
addParameter( definition );
}
void QgsProcessingModelAlgorithm::removeModelParameter( const QString &name )
{
removeParameter( name );
mParameterComponents.remove( name );
}
bool QgsProcessingModelAlgorithm::childAlgorithmsDependOnParameter( const QString &name ) const
{
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
// check whether child requires this parameter
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources> childParams = childIt->parameterSources();
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources>::const_iterator paramIt = childParams.constBegin();
for ( ; paramIt != childParams.constEnd(); ++paramIt )
{
Q_FOREACH ( const ChildParameterSource &source, paramIt.value() )
{
if ( source.source() == ChildParameterSource::ModelParameter
&& source.parameterName() == name )
{
return true;
}
}
}
}
return false;
}
bool QgsProcessingModelAlgorithm::otherParametersDependOnParameter( const QString &name ) const
{
Q_FOREACH ( const QgsProcessingParameterDefinition *def, mParameters )
{
if ( def->name() == name )
continue;
if ( def->dependsOnOtherParameters().contains( name ) )
return true;
}
return false;
}
QMap<QString, QgsProcessingModelAlgorithm::ModelParameter> QgsProcessingModelAlgorithm::parameterComponents() const
{
return mParameterComponents;
}
void QgsProcessingModelAlgorithm::dependentChildAlgorithmsRecursive( const QString &childId, QSet<QString> &depends ) const
{
QMap< QString, ChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( depends.contains( childIt->childId() ) )
continue;
// does alg have a direct dependency on this child?
if ( childIt->dependencies().contains( childId ) )
{
depends.insert( childIt->childId() );
dependentChildAlgorithmsRecursive( childIt->childId(), depends );
continue;
}
// check whether child requires any outputs from the target alg
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources> childParams = childIt->parameterSources();
QMap<QString, QgsProcessingModelAlgorithm::ChildParameterSources>::const_iterator paramIt = childParams.constBegin();
for ( ; paramIt != childParams.constEnd(); ++paramIt )