How to choose LCI method

[gvoigt]

In the product system tutorial the LCI method is selected via an interactive window

methodDescriptor = ModelSelectionDialog.select(ModelType.IMPACT_METHOD)

How can I choose a method directly in jython?
How can I list the possible methods?

[msrocka]

You can do this via the ImpactMethodDao, e.g.:

from org.openlca.core.database import ImpactMethodDao

method_for_calculation = None
dao = ImpactMethodDao(db)
for descriptor in dao.getDescriptors():
  if descriptor.name == 'My super LCIA method':
    method_for_calculation = descriptor
    break

if method_for_calculation is None:
  panic('Method not found!')