[processing] allow geometryless layer input for order by expression alg

nirvn · nyalldawson · commit 14540a956df8 · 2018-08-08T19:28:38.000+10:00
(cherry-picked from 2a57e77)
diff --git a/src/analysis/processing/qgsalgorithmorderbyexpression.cpp b/src/analysis/processing/qgsalgorithmorderbyexpression.cpp
@@ -49,7 +49,7 @@ QString QgsOrderByExpressionAlgorithm::groupId() const
 
 void QgsOrderByExpressionAlgorithm::initAlgorithm( const QVariantMap & )
 {
-  addParameter( new QgsProcessingParameterFeatureSource( QStringLiteral( "INPUT" ), QObject::tr( "Input layer" ) ) );
+  addParameter( new QgsProcessingParameterFeatureSource( QStringLiteral( "INPUT" ), QObject::tr( "Input layer" ), QList< int >() << QgsProcessing::TypeVector ) );
   addParameter( new QgsProcessingParameterExpression( QStringLiteral( "EXPRESSION" ), QObject::tr( "Expression" ), QVariant(), QStringLiteral( "INPUT" ) ) );
   addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "ASCENDING" ), QObject::tr( "Ascending" ), true ) );
   addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "NULLS_FIRST" ), QObject::tr( "Nulls first" ), false ) );

Original file line number	Diff line number	Diff line change
`@@ -49,7 +49,7 @@ QString QgsOrderByExpressionAlgorithm::groupId() const`
`49`	`49`
`50`	`50`	`void QgsOrderByExpressionAlgorithm::initAlgorithm( const QVariantMap & )`
`51`	`51`	`{`
`52`		`- addParameter( new QgsProcessingParameterFeatureSource( QStringLiteral( "INPUT" ), QObject::tr( "Input layer" ) ) );`
	`52`	`+ addParameter( new QgsProcessingParameterFeatureSource( QStringLiteral( "INPUT" ), QObject::tr( "Input layer" ), QList< int >() << QgsProcessing::TypeVector ) );`
`53`	`53`	`addParameter( new QgsProcessingParameterExpression( QStringLiteral( "EXPRESSION" ), QObject::tr( "Expression" ), QVariant(), QStringLiteral( "INPUT" ) ) );`
`54`	`54`	`addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "ASCENDING" ), QObject::tr( "Ascending" ), true ) );`
`55`	`55`	`addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "NULLS_FIRST" ), QObject::tr( "Nulls first" ), false ) );`