/
qgsprocessingmodelalgorithm.cpp
1162 lines (995 loc) · 42.2 KB
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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::QgsProcessingModelAlgorithm( const QString &name, const QString &group, const QString &groupId )
: mModelName( name.isEmpty() ? QObject::tr( "model" ) : name )
, mModelGroup( group )
, mModelGroupId( groupId )
{}
void QgsProcessingModelAlgorithm::initAlgorithm( const QVariantMap & )
{
}
QString QgsProcessingModelAlgorithm::name() const
{
return mModelName;
}
QString QgsProcessingModelAlgorithm::displayName() const
{
return mModelName;
}
QString QgsProcessingModelAlgorithm::group() const
{
return mModelGroup;
}
QString QgsProcessingModelAlgorithm::groupId() const
{
return mModelGroupId;
}
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 );
}
QgsProcessingAlgorithm::Flags QgsProcessingModelAlgorithm::flags() const
{
// TODO - check child algorithms, if they all support threading, then the model supports threading...
return QgsProcessingAlgorithm::flags() | QgsProcessingAlgorithm::FlagNoThreading;
}
QVariantMap QgsProcessingModelAlgorithm::parametersForChildAlgorithm( const QgsProcessingModelChildAlgorithm &child, const QVariantMap &modelParameters, const QVariantMap &results, const QgsExpressionContext &expressionContext ) 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
QgsProcessingModelChildParameterSources paramSources = child.parameterSources().value( def->name() );
QVariantList paramParts;
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, paramSources )
{
switch ( source.source() )
{
case QgsProcessingModelChildParameterSource::StaticValue:
paramParts << source.staticValue();
break;
case QgsProcessingModelChildParameterSource::ModelParameter:
paramParts << modelParameters.value( source.parameterName() );
break;
case QgsProcessingModelChildParameterSource::ChildOutput:
{
QVariantMap linkedChildResults = results.value( source.outputChildId() ).toMap();
paramParts << linkedChildResults.value( source.outputName() );
break;
}
case QgsProcessingModelChildParameterSource::Expression:
{
QgsExpression exp( source.expression() );
paramParts << exp.evaluate( &expressionContext );
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, QgsProcessingModelOutput> outputs = child.modelOutputs();
QMap<QString, QgsProcessingModelOutput>::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, QgsProcessingModelChildAlgorithm >::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, QgsProcessingModelChildParameterSources> candidateChildParams = childIt->parameterSources();
QMap<QString, QgsProcessingModelChildParameterSources>::const_iterator childParamIt = candidateChildParams.constBegin();
for ( ; childParamIt != candidateChildParams.constEnd(); ++childParamIt )
{
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, childParamIt.value() )
{
if ( source.source() == QgsProcessingModelChildParameterSource::ChildOutput
&& source.outputChildId() == childId
&& source.outputName() == outputName )
{
return true;
}
}
}
}
return false;
}
QVariantMap QgsProcessingModelAlgorithm::processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback )
{
QSet< QString > toExecute;
QMap< QString, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( childIt->isActive() && childIt->algorithm() )
toExecute.insert( childIt->childId() );
}
QTime totalTime;
totalTime.start();
QgsProcessingMultiStepFeedback modelFeedback( toExecute.count(), feedback );
QgsExpressionContext baseContext = createExpressionContext( parameters, context );
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 ( feedback && feedback->isCanceled() )
break;
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;
if ( feedback )
feedback->pushDebugInfo( QObject::tr( "Prepare algorithm: %1" ).arg( childId ) );
const QgsProcessingModelChildAlgorithm &child = mChildAlgorithms[ childId ];
QgsExpressionContext expContext = baseContext;
expContext << QgsExpressionContextUtils::processingAlgorithmScope( child.algorithm(), parameters, context )
<< createExpressionContextScopeForChildAlgorithm( childId, context, parameters, childResults );
QVariantMap childParams = parametersForChildAlgorithm( child, parameters, childResults, expContext );
if ( feedback )
feedback->setProgressText( QObject::tr( "Running %1 [%2/%3]" ).arg( child.description() ).arg( executed.count() + 1 ).arg( toExecute.count() ) );
QStringList params;
for ( auto childParamIt = childParams.constBegin(); childParamIt != childParams.constEnd(); ++childParamIt )
{
params << QStringLiteral( "%1: %2" ).arg( childParamIt.key(),
child.algorithm()->parameterDefinition( childParamIt.key() )->valueAsPythonString( childParamIt.value(), context ) );
}
if ( feedback )
{
feedback->pushInfo( QObject::tr( "Input Parameters:" ) );
feedback->pushCommandInfo( QStringLiteral( "{ %1 }" ).arg( params.join( QStringLiteral( ", " ) ) ) );
}
QTime childTime;
childTime.start();
bool ok = false;
std::unique_ptr< QgsProcessingAlgorithm > childAlg( child.algorithm()->create( child.configuration() ) );
QVariantMap results = childAlg->run( childParams, context, &modelFeedback, &ok, child.configuration() );
childAlg.reset( nullptr );
if ( !ok )
{
QString error = QObject::tr( "Error encountered while running %1" ).arg( child.description() );
if ( feedback )
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, QgsProcessingModelOutput> outputs = child.modelOutputs();
QMap<QString, QgsProcessingModelOutput>::const_iterator outputIt = outputs.constBegin();
for ( ; outputIt != outputs.constEnd(); ++outputIt )
{
finalResults.insert( childId + ':' + outputIt->name(), results.value( outputIt->childOutputName() ) );
}
executed.insert( childId );
modelFeedback.setCurrentStep( executed.count() );
if ( feedback )
feedback->pushInfo( QObject::tr( "OK. Execution took %1 s (%2 outputs)." ).arg( childTime.elapsed() / 1000.0 ).arg( results.count() ) );
}
if ( feedback && feedback->isCanceled() )
break;
}
if ( feedback )
feedback->pushDebugInfo( QObject::tr( "Model processed OK. Executed %1 algorithms total in %2 s." ).arg( executed.count() ).arg( totalTime.elapsed() / 1000.0 ) );
mResults = finalResults;
return mResults;
}
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, QgsProcessingModelParameter >::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( QStringLiteral( "[^a-z_]" ) );
n.replace( rx, QString() );
return n;
};
QMap< QString, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( !childIt->isActive() || !childIt->algorithm() )
continue;
// look through all outputs for child
QMap<QString, QgsProcessingModelOutput> outputs = childIt->modelOutputs();
QMap<QString, QgsProcessingModelOutput>::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 QgsProcessingModelChildAlgorithm &child = mChildAlgorithms[ childId ];
lines << child.asPythonCode();
executed.insert( childId );
}
}
lines << QStringLiteral( "return results" );
return lines.join( '\n' );
}
QMap<QString, QgsProcessingModelAlgorithm::VariableDefinition> QgsProcessingModelAlgorithm::variablesForChildAlgorithm( const QString &childId, QgsProcessingContext &context, const QVariantMap &modelParameters, const QVariantMap &results ) const
{
QMap<QString, QgsProcessingModelAlgorithm::VariableDefinition> variables;
auto safeName = []( const QString & name )->QString
{
QString s = name;
return s.replace( QRegularExpression( QStringLiteral( "[\\s'\"\\(\\):]" ) ), QStringLiteral( "_" ) );
};
// "static"/single value sources
QgsProcessingModelChildParameterSources sources = availableSourcesForChild( childId, QStringList() << QgsProcessingParameterNumber::typeName()
<< QgsProcessingParameterBoolean::typeName()
<< QgsProcessingParameterExpression::typeName()
<< QgsProcessingParameterField::typeName()
<< QgsProcessingParameterString::typeName(),
QStringList() << QgsProcessingOutputNumber::typeName()
<< QgsProcessingOutputString::typeName() );
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, sources )
{
QString name;
QVariant value;
QString description;
switch ( source.source() )
{
case QgsProcessingModelChildParameterSource::ModelParameter:
{
name = source.parameterName();
value = modelParameters.value( source.parameterName() );
description = parameterDefinition( source.parameterName() )->description();
break;
}
case QgsProcessingModelChildParameterSource::ChildOutput:
{
const QgsProcessingModelChildAlgorithm &child = mChildAlgorithms.value( source.outputChildId() );
name = QStringLiteral( "%1_%2" ).arg( child.description().isEmpty() ?
source.outputChildId() : child.description(), source.outputName() );
if ( const QgsProcessingAlgorithm *alg = child.algorithm() )
{
description = QObject::tr( "Output '%1' from algorithm '%2'" ).arg( alg->outputDefinition( source.outputName() )->description(),
child.description() );
}
value = results.value( source.outputChildId() ).toMap().value( source.outputName() );
break;
}
case QgsProcessingModelChildParameterSource::Expression:
case QgsProcessingModelChildParameterSource::StaticValue:
continue;
};
variables.insert( safeName( name ), VariableDefinition( value, source, description ) );
}
// layer sources
sources = availableSourcesForChild( childId, QStringList()
<< QgsProcessingParameterVectorLayer::typeName()
<< QgsProcessingParameterRasterLayer::typeName(),
QStringList() << QgsProcessingOutputVectorLayer::typeName()
<< QgsProcessingOutputRasterLayer::typeName()
<< QgsProcessingOutputMapLayer::typeName() );
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, sources )
{
QString name;
QVariant value;
QString description;
switch ( source.source() )
{
case QgsProcessingModelChildParameterSource::ModelParameter:
{
name = source.parameterName();
value = modelParameters.value( source.parameterName() );
description = parameterDefinition( source.parameterName() )->description();
break;
}
case QgsProcessingModelChildParameterSource::ChildOutput:
{
const QgsProcessingModelChildAlgorithm &child = mChildAlgorithms.value( source.outputChildId() );
name = QStringLiteral( "%1_%2" ).arg( child.description().isEmpty() ?
source.outputChildId() : child.description(), source.outputName() );
value = results.value( source.outputChildId() ).toMap().value( source.outputName() );
if ( const QgsProcessingAlgorithm *alg = child.algorithm() )
{
description = QObject::tr( "Output '%1' from algorithm '%2'" ).arg( alg->outputDefinition( source.outputName() )->description(),
child.description() );
}
break;
}
case QgsProcessingModelChildParameterSource::Expression:
case QgsProcessingModelChildParameterSource::StaticValue:
continue;
};
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( qvariant_cast<QObject *>( value ) );
if ( !layer )
layer = QgsProcessingUtils::mapLayerFromString( value.toString(), context );
variables.insert( safeName( QStringLiteral( "%1_minx" ).arg( name ) ), VariableDefinition( layer ? layer->extent().xMinimum() : QVariant(), source, QObject::tr( "Minimum X of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_miny" ).arg( name ) ), VariableDefinition( layer ? layer->extent().yMinimum() : QVariant(), source, QObject::tr( "Minimum Y of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_maxx" ).arg( name ) ), VariableDefinition( layer ? layer->extent().xMaximum() : QVariant(), source, QObject::tr( "Maximum X of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_maxy" ).arg( name ) ), VariableDefinition( layer ? layer->extent().yMaximum() : QVariant(), source, QObject::tr( "Maximum Y of %1" ).arg( description ) ) );
}
sources = availableSourcesForChild( childId, QStringList()
<< QgsProcessingParameterFeatureSource::typeName() );
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, sources )
{
QString name;
QVariant value;
QString description;
switch ( source.source() )
{
case QgsProcessingModelChildParameterSource::ModelParameter:
{
name = source.parameterName();
value = modelParameters.value( source.parameterName() );
description = parameterDefinition( source.parameterName() )->description();
break;
}
case QgsProcessingModelChildParameterSource::ChildOutput:
{
const QgsProcessingModelChildAlgorithm &child = mChildAlgorithms.value( source.outputChildId() );
name = QStringLiteral( "%1_%2" ).arg( child.description().isEmpty() ?
source.outputChildId() : child.description(), source.outputName() );
value = results.value( source.outputChildId() ).toMap().value( source.outputName() );
if ( const QgsProcessingAlgorithm *alg = child.algorithm() )
{
description = QObject::tr( "Output '%1' from algorithm '%2'" ).arg( alg->outputDefinition( source.outputName() )->description(),
child.description() );
}
break;
}
case QgsProcessingModelChildParameterSource::Expression:
case QgsProcessingModelChildParameterSource::StaticValue:
continue;
};
QgsFeatureSource *featureSource = nullptr;
if ( value.canConvert<QgsProcessingFeatureSourceDefinition>() )
{
QgsProcessingFeatureSourceDefinition fromVar = qvariant_cast<QgsProcessingFeatureSourceDefinition>( value );
value = fromVar.source;
}
if ( QgsVectorLayer *layer = qobject_cast< QgsVectorLayer * >( qvariant_cast<QObject *>( value ) ) )
{
featureSource = layer;
}
if ( !featureSource )
{
if ( QgsVectorLayer *vl = qobject_cast< QgsVectorLayer *>( QgsProcessingUtils::mapLayerFromString( value.toString(), context ) ) )
featureSource = vl;
}
variables.insert( safeName( QStringLiteral( "%1_minx" ).arg( name ) ), VariableDefinition( featureSource ? featureSource->sourceExtent().xMinimum() : QVariant(), source, QObject::tr( "Minimum X of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_miny" ).arg( name ) ), VariableDefinition( featureSource ? featureSource->sourceExtent().yMinimum() : QVariant(), source, QObject::tr( "Minimum Y of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_maxx" ).arg( name ) ), VariableDefinition( featureSource ? featureSource->sourceExtent().xMaximum() : QVariant(), source, QObject::tr( "Maximum X of %1" ).arg( description ) ) );
variables.insert( safeName( QStringLiteral( "%1_maxy" ).arg( name ) ), VariableDefinition( featureSource ? featureSource->sourceExtent().yMaximum() : QVariant(), source, QObject::tr( "Maximum Y of %1" ).arg( description ) ) );
}
return variables;
}
QgsExpressionContextScope *QgsProcessingModelAlgorithm::createExpressionContextScopeForChildAlgorithm( const QString &childId, QgsProcessingContext &context, const QVariantMap &modelParameters, const QVariantMap &results ) const
{
std::unique_ptr< QgsExpressionContextScope > scope( new QgsExpressionContextScope() );
QMap< QString, QgsProcessingModelAlgorithm::VariableDefinition> variables = variablesForChildAlgorithm( childId, context, modelParameters, results );
QMap< QString, QgsProcessingModelAlgorithm::VariableDefinition>::const_iterator varIt = variables.constBegin();
for ( ; varIt != variables.constEnd(); ++varIt )
{
scope->addVariable( QgsExpressionContextScope::StaticVariable( varIt.key(), varIt->value, true, false, varIt->description ) );
}
return scope.release();
}
QgsProcessingModelChildParameterSources QgsProcessingModelAlgorithm::availableSourcesForChild( const QString &childId, const QStringList ¶meterTypes, const QStringList &outputTypes, const QList<int> &dataTypes ) const
{
QgsProcessingModelChildParameterSources sources;
// first look through model parameters
QMap< QString, QgsProcessingModelParameter >::const_iterator paramIt = mParameterComponents.constBegin();
for ( ; paramIt != mParameterComponents.constEnd(); ++paramIt )
{
const QgsProcessingParameterDefinition *def = parameterDefinition( paramIt->parameterName() );
if ( !def )
continue;
if ( parameterTypes.contains( def->type() ) )
{
if ( !dataTypes.isEmpty() )
{
if ( def->type() == QgsProcessingParameterField::typeName() )
{
const QgsProcessingParameterField *fieldDef = static_cast< const QgsProcessingParameterField * >( def );
if ( !( dataTypes.contains( fieldDef->dataType() ) || fieldDef->dataType() == QgsProcessingParameterField::Any ) )
{
continue;
}
}
else if ( def->type() == QgsProcessingParameterFeatureSource::typeName() || def->type() == QgsProcessingParameterVectorLayer::typeName() )
{
const QgsProcessingParameterLimitedDataTypes *sourceDef = dynamic_cast< const QgsProcessingParameterLimitedDataTypes *>( def );
if ( !sourceDef )
continue;
bool ok = sourceDef->dataTypes().isEmpty();
Q_FOREACH ( int type, sourceDef->dataTypes() )
{
if ( dataTypes.contains( type ) || type == QgsProcessing::TypeMapLayer || type == QgsProcessing::TypeVector || type == QgsProcessing::TypeVectorAnyGeometry )
{
ok = true;
break;
}
}
if ( dataTypes.contains( QgsProcessing::TypeMapLayer ) || dataTypes.contains( QgsProcessing::TypeVector ) || dataTypes.contains( QgsProcessing::TypeVectorAnyGeometry ) )
ok = true;
if ( !ok )
continue;
}
}
sources << QgsProcessingModelChildParameterSource::fromModelParameter( paramIt->parameterName() );
}
}
QSet< QString > dependents;
if ( !childId.isEmpty() )
{
dependents = dependentChildAlgorithms( childId );
dependents << childId;
}
QMap< QString, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
if ( dependents.contains( childIt->childId() ) )
continue;
const QgsProcessingAlgorithm *alg = childIt->algorithm();
if ( !alg )
continue;
Q_FOREACH ( const QgsProcessingOutputDefinition *out, alg->outputDefinitions() )
{
if ( outputTypes.contains( out->type() ) )
{
if ( !dataTypes.isEmpty() )
{
if ( out->type() == QgsProcessingOutputVectorLayer::typeName() )
{
const QgsProcessingOutputVectorLayer *vectorOut = static_cast< const QgsProcessingOutputVectorLayer *>( out );
if ( !( dataTypes.contains( vectorOut->dataType() ) || vectorOut->dataType() == QgsProcessing::TypeMapLayer || vectorOut->dataType() == QgsProcessing::TypeVector
|| vectorOut->dataType() == QgsProcessing::TypeVectorAnyGeometry ) )
{
continue;
}
}
}
sources << QgsProcessingModelChildParameterSource::fromChildOutput( childIt->childId(), out->name() );
}
}
}
return sources;
}
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, QgsProcessingModelChildAlgorithm> QgsProcessingModelAlgorithm::childAlgorithms() const
{
return mChildAlgorithms;
}
void QgsProcessingModelAlgorithm::setParameterComponents( const QMap<QString, QgsProcessingModelParameter> ¶meterComponents )
{
mParameterComponents = parameterComponents;
}
void QgsProcessingModelAlgorithm::setParameterComponent( const QgsProcessingModelParameter &component )
{
mParameterComponents.insert( component.parameterName(), component );
}
QgsProcessingModelParameter &QgsProcessingModelAlgorithm::parameterComponent( const QString &name )
{
if ( !mParameterComponents.contains( name ) )
{
QgsProcessingModelParameter &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, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
QMap<QString, QgsProcessingModelOutput> outputs = childIt->modelOutputs();
QMap<QString, QgsProcessingModelOutput>::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;
std::unique_ptr< QgsProcessingParameterDefinition > param( source->clone() );
param->setName( outputIt->childId() + ':' + outputIt->name() );
param->setDescription( outputIt->description() );
addParameter( param.release() );
}
}
}
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, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
childMap.insert( childIt.key(), childIt.value().toVariant() );
}
map.insert( QStringLiteral( "children" ), childMap );
QVariantMap paramMap;
QMap< QString, QgsProcessingModelParameter >::const_iterator paramIt = mParameterComponents.constBegin();
for ( ; paramIt != mParameterComponents.constEnd(); ++paramIt )
{
paramMap.insert( paramIt.key(), paramIt.value().toVariant() );
}
map.insert( QStringLiteral( "parameters" ), paramMap );
QVariantMap paramDefMap;
Q_FOREACH ( const QgsProcessingParameterDefinition *def, mParameters )
{
paramDefMap.insert( def->name(), def->toVariantMap() );
}
map.insert( QStringLiteral( "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 )
{
QgsProcessingModelChildAlgorithm child;
// we be leniant here - even if we couldn't load a parameter, don't interrupt the model loading
// otherwise models may become unusable (e.g. due to removed plugins providing algs/parameters)
// with no way for users to repair them
if ( !child.loadVariant( childIt.value() ) )
continue;
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 )
{
QgsProcessingModelParameter 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 )
{
std::unique_ptr< QgsProcessingParameterDefinition > param( QgsProcessingParameters::parameterFromVariantMap( paramDefIt.value().toMap() ) );
// we be leniant here - even if we couldn't load a parameter, don't interrupt the model loading
// otherwise models may become unusable (e.g. due to removed plugins providing algs/parameters)
// with no way for users to repair them
if ( param )
addParameter( param.release() );
else
{
QVariantMap map = paramDefIt.value().toMap();
QString type = map.value( QStringLiteral( "parameter_type" ) ).toString();
QString name = map.value( QStringLiteral( "name" ) ).toString();
QgsMessageLog::logMessage( QCoreApplication::translate( "Processing", "Could not load parameter %1 of type %2." ).arg( name, type ), QCoreApplication::translate( "Processing", "Processing" ) );
}
}
updateDestinationParameters();
return true;
}
bool QgsProcessingModelAlgorithm::toFile( const QString &path ) const
{
QDomDocument doc = QDomDocument( QStringLiteral( "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, QgsProcessingModelChildAlgorithm> &childAlgorithms )
{
mChildAlgorithms = childAlgorithms;
updateDestinationParameters();
}
void QgsProcessingModelAlgorithm::setChildAlgorithm( const QgsProcessingModelChildAlgorithm &algorithm )
{
mChildAlgorithms.insert( algorithm.childId(), algorithm );
updateDestinationParameters();
}
QString QgsProcessingModelAlgorithm::addChildAlgorithm( QgsProcessingModelChildAlgorithm &algorithm )
{
if ( algorithm.childId().isEmpty() || mChildAlgorithms.contains( algorithm.childId() ) )
algorithm.generateChildId( *this );
mChildAlgorithms.insert( algorithm.childId(), algorithm );
updateDestinationParameters();
return algorithm.childId();
}
QgsProcessingModelChildAlgorithm &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 QgsProcessingModelParameter &component )
{
if ( 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, QgsProcessingModelChildAlgorithm >::const_iterator childIt = mChildAlgorithms.constBegin();
for ( ; childIt != mChildAlgorithms.constEnd(); ++childIt )
{
// check whether child requires this parameter
QMap<QString, QgsProcessingModelChildParameterSources> childParams = childIt->parameterSources();
QMap<QString, QgsProcessingModelChildParameterSources>::const_iterator paramIt = childParams.constBegin();
for ( ; paramIt != childParams.constEnd(); ++paramIt )
{
Q_FOREACH ( const QgsProcessingModelChildParameterSource &source, paramIt.value() )
{
if ( source.source() == QgsProcessingModelChildParameterSource::ModelParameter