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Fix Refactor Fields error if layer has no features

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This commit is contained in:
Borys Jurgiel 2017-04-06 10:14:01 +02:00
parent a30cf2923c
commit e5d10b6946
1 changed files with 22 additions and 19 deletions
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41
python/plugins/processing/algs/qgis/FieldsMapper.py
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@ -153,30 +153,33 @@ class FieldsMapper(GeoAlgorithm):
inFeat = QgsFeature()
outFeat = QgsFeature()
features = vector.features(layer)
total = 100.0 / len(features)
for current, inFeat in enumerate(features):
rownum = current + 1
if len(features):
total = 100.0 / len(features)
for current, inFeat in enumerate(features):
rownum = current + 1
geometry = inFeat.geometry()
outFeat.setGeometry(geometry)
geometry = inFeat.geometry()
outFeat.setGeometry(geometry)
attrs = []
for i in range(0, len(mapping)):
field_def = mapping[i]
expression = expressions[i]
exp_context.setFeature(inFeat)
exp_context.lastScope().setVariable("row_number", rownum)
value = expression.evaluate(exp_context)
if expression.hasEvalError():
error_exp = expression
break
attrs = []
for i in range(0, len(mapping)):
field_def = mapping[i]
expression = expressions[i]
exp_context.setFeature(inFeat)
exp_context.lastScope().setVariable("row_number", rownum)
value = expression.evaluate(exp_context)
if expression.hasEvalError():
error_exp = expression
break
attrs.append(value)
outFeat.setAttributes(attrs)
attrs.append(value)
outFeat.setAttributes(attrs)
writer.addFeature(outFeat)
writer.addFeature(outFeat)
feedback.setProgress(int(current * total))
feedback.setProgress(int(current * total))
else:
feedback.setProgress(100)
del writer