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qgsgeometryduplicatecheck.cpp
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qgsgeometryduplicatecheck.cpp
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/***************************************************************************
qgsgeometryduplicatecheck.cpp
---------------------
begin : September 2015
copyright : (C) 2014 by Sandro Mani / Sourcepole AG
email : smani at sourcepole dot ch
***************************************************************************
* *
* 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 "qgsgeometrycheckcontext.h"
#include "qgsgeometryengine.h"
#include "qgsgeometryduplicatecheck.h"
#include "qgsspatialindex.h"
#include "qgsgeometry.h"
#include "qgsfeaturepool.h"
#include "qgsvectorlayer.h"
QString QgsGeometryDuplicateCheckError::duplicatesString( const QMap<QString, QgsFeaturePool *> &featurePools, const QMap<QString, QList<QgsFeatureId>> &duplicates )
{
QStringList str;
for ( auto it = duplicates.constBegin(); it != duplicates.constEnd(); ++it )
{
str.append( featurePools[it.key()]->layer()->name() + ":" );
QStringList ids;
ids.reserve( it.value().length() );
for ( QgsFeatureId id : it.value() )
{
ids.append( QString::number( id ) );
}
str.back() += ids.join( ',' );
}
return str.join( QLatin1String( "; " ) );
}
void QgsGeometryDuplicateCheck::collectErrors( const QMap<QString, QgsFeaturePool *> &featurePools, QList<QgsGeometryCheckError *> &errors, QStringList &messages, QgsFeedback *feedback, const LayerFeatureIds &ids ) const
{
QMap<QString, QgsFeatureIds> featureIds = ids.isEmpty() ? allLayerFeatureIds( featurePools ) : ids.toMap();
QgsGeometryCheckerUtils::LayerFeatures layerFeaturesA( featurePools, featureIds, compatibleGeometryTypes(), feedback, mContext, true );
QList<QString> layerIds = featureIds.keys();
for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeatureA : layerFeaturesA )
{
// Ensure each pair of layers only gets compared once: remove the current layer from the layerIds, but add it to the layerList for layerFeaturesB
layerIds.removeOne( layerFeatureA.layer()->id() );
QgsGeometry geomA = layerFeatureA.geometry();
QgsRectangle bboxA = geomA.boundingBox();
std::unique_ptr< QgsGeometryEngine > geomEngineA = QgsGeometryCheckerUtils::createGeomEngine( geomA.constGet(), mContext->tolerance );
if ( !geomEngineA->isValid() )
{
messages.append( tr( "Duplicate check failed for (%1): the geometry is invalid" ).arg( layerFeatureA.id() ) );
continue;
}
QMap<QString, QList<QgsFeatureId>> duplicates;
QgsWkbTypes::GeometryType geomType = geomA.type();
QgsGeometryCheckerUtils::LayerFeatures layerFeaturesB( featurePools, QList<QString>() << layerFeatureA.layer()->id() << layerIds, bboxA, {geomType}, mContext );
for ( const QgsGeometryCheckerUtils::LayerFeature &layerFeatureB : layerFeaturesB )
{
// > : only report overlaps within same layer once
if ( layerFeatureA.layer()->id() == layerFeatureB.layer()->id() && layerFeatureB.feature().id() >= layerFeatureA.feature().id() )
{
continue;
}
QString errMsg;
QgsGeometry geomB = layerFeatureB.geometry();
std::unique_ptr<QgsAbstractGeometry> diffGeom( geomEngineA->symDifference( geomB.constGet(), &errMsg ) );
if ( errMsg.isEmpty() && ( !diffGeom || diffGeom->isEmpty() ) )
{
duplicates[layerFeatureB.layer()->id()].append( layerFeatureB.feature().id() );
}
else if ( !errMsg.isEmpty() )
{
messages.append( tr( "Duplicate check failed for (%1, %2): %3" ).arg( layerFeatureA.id(), layerFeatureB.id(), errMsg ) );
}
}
if ( !duplicates.isEmpty() )
{
errors.append( new QgsGeometryDuplicateCheckError( this, layerFeatureA, geomA.constGet()->centroid(), featurePools, duplicates ) );
}
}
}
void QgsGeometryDuplicateCheck::fixError( const QMap<QString, QgsFeaturePool *> &featurePools, QgsGeometryCheckError *error, int method, const QMap<QString, int> & /*mergeAttributeIndices*/, Changes &changes ) const
{
QgsFeaturePool *featurePoolA = featurePools[ error->layerId() ];
QgsFeature featureA;
if ( !featurePoolA->getFeature( error->featureId(), featureA ) )
{
error->setObsolete();
return;
}
if ( method == NoChange )
{
error->setFixed( method );
}
else if ( method == RemoveDuplicates )
{
QgsGeometryCheckerUtils::LayerFeature layerFeatureA( featurePoolA, featureA, mContext, true );
std::unique_ptr< QgsGeometryEngine > geomEngineA = QgsGeometryCheckerUtils::createGeomEngine( layerFeatureA.geometry().constGet(), mContext->tolerance );
QgsGeometryDuplicateCheckError *duplicateError = static_cast<QgsGeometryDuplicateCheckError *>( error );
const QMap<QString, QList<QgsFeatureId>> duplicates = duplicateError->duplicates();
for ( auto it = duplicates.constBegin(); it != duplicates.constEnd(); ++it )
{
const QString layerIdB = it.key();
QgsFeaturePool *featurePoolB = featurePools[ layerIdB ];
const QList< QgsFeatureId > ids = it.value();
for ( QgsFeatureId idB : ids )
{
QgsFeature featureB;
if ( !featurePoolB->getFeature( idB, featureB ) )
{
continue;
}
QgsGeometryCheckerUtils::LayerFeature layerFeatureB( featurePoolB, featureB, mContext, true );
std::unique_ptr< QgsAbstractGeometry > diffGeom( geomEngineA->symDifference( layerFeatureB.geometry().constGet() ) );
if ( !diffGeom || diffGeom->isEmpty() )
{
featurePoolB->deleteFeature( featureB.id() );
changes[layerIdB][idB].append( Change( ChangeFeature, ChangeRemoved ) );
}
}
}
error->setFixed( method );
}
else
{
error->setFixFailed( tr( "Unknown method" ) );
}
}
QStringList QgsGeometryDuplicateCheck::resolutionMethods() const
{
static QStringList methods = QStringList()
<< tr( "No action" )
<< tr( "Remove duplicates" );
return methods;
}
QString QgsGeometryDuplicateCheck::factoryId()
{
return QStringLiteral( "QgsGeometryDuplicateCheck" );
}
QgsGeometryCheck::CheckType QgsGeometryDuplicateCheck::factoryCheckType()
{
return QgsGeometryCheck::FeatureCheck;
}