def pg_layerNamesIDMapping():
'''
Returns a dictionary containing the original table names and corresponding layer IDs in the
QGIS legend for only those layers from a postgres database.
'''
mapping = ReverseDict()
layers = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layers.iteritems():
if layer.dataProvider().name() == 'postgres':
layerConnStr = layer.dataProvider().dataSourceUri()
dataSourceURI = QgsDataSourceURI(layerConnStr)
mapping[dataSourceURI.table()] = layer.id()
return mapping
def clear(self):
"""
Clears the data source name and removes all data field mappings.
"""
self._dataSourceName = ""
self._dataFieldmappings = ReverseDict()
def __init__(self,dataSourceName="",category = ""):
self._dataSourceName = dataSourceName
self._dataSourceCategory = category
self._dataFieldmappings = ReverseDict()
self._spatialFieldsConfig = None
