def unlink_layer(self, layer):
"""
Un-link layer
Keyword Description
---------- ------------------------------------------------------------
layer layer number
rtype str
---------- ------------------------------------------------------------
"""
out = v.db_connect(map=self.full_name, layer=layer, flags='d', stderr_=PIPE)
if out.output.stderr is not '1':
return out.output.stderr
def layers(self):
"""
Returns attributes for layer(s) linked to MVector object
rtype: dictionary
"""
dblinks = v.db_connect(map=self.full_name, flags='g', stdout_=PIPE)
links = {}
for item in dblinks.outputs.stdout.split('\n'):
link = {}
if item:
layer, table, key, dbpath, driver = item.split('|')
link['name'] = table
link['key'] = key
links[layer.split('/')[0]] = link
return links
def link_layer(self, table, layer, key='cat', flag='o', **kwargs):
"""
Link layer
Keyword Description
---------- --------------------------------------------------
table table name in data base
rtype str
layer layer to link table
rtype str
key column name with table key. Default='cat'
flag flag to pass to v.db.connect command. Default='o'
**kwargs aditional arguments to pass to v.db.connect
---------- --------------------------------------------------
"""
out = v.db_connect(map=self.full_name, table=table, layer=layer, key=key,
flags=flag, stdout_=PIPE, stderr_=PIPE, **kwargs)
if out.output.stderr is not '1':
return out.output.stderr
else:
print table, ' was linked as layer ', layer, ' on ', self.name
