def calculate_joins(source, targetclass, otherclass, otherendname, nullable=False, force_fullname=False):
joins = []
pks = get_pks(otherclass)
my_pks=get_pks(source)
if not pks:
raise ValueError,'class %s has no primary key defined' % dotted_path(otherclass)
try:
lastattr = targetclass.attributes()[-1]
except IndexError:
lastattr = None
for pk in pks:
pkname = get_colid(pk)
#import pdb;pdb.set_trace()
fkname = get_fkname(source, pkname, otherendname, force_fullname=force_fullname)
# this stmt will be attached to otherend in order to be used
# for the join in the relationship stmt
joinstmt = '%s.%s == %s.%s' % (
source.name, fkname, otherclass.name, pkname)
if not targetclass.attributes(fkname):
attr = Attribute()
attr.__name__ = str(attr.uuid)
if lastattr:
targetclass.insertafter(attr, lastattr)
else:
targetclass.insertfirst(attr)
attr.targets = [fkname]
fk = "ForeignKey('%s.%s')" % (
get_tablename(otherclass), pkname)
options = {}
typename = pk.type.name
# handle custom types (PrimitveType)
if pk.type.stereotype('sql:sql_type'):
tgv = TaggedValues(pk.type)
typename = tgv.direct(
'classname', 'sql:sql_type', typename)
import_from = tgv.direct(
'import_from', 'sql:sql_type', None)
if import_from:
imps = Imports(module)
imps.set(import_from, [[typename, None]])
if nullable:
options['nullable'] = 'True'
else:
options['nullable'] = 'False'
if not my_pks:
options['primary_key'] = 'True'
oparray = []
for k in options:
oparray.append('%s = %s' % (k, options[k]))
attr.value = 'Column(%s, %s, %s)' % (
typename, fk, ', '.join(oparray))
joins.append(joinstmt)
return joins
def setup_i18n(self, source, target):
tdir = read_target_node(source, target.target)
init = tdir['__init__.py']
imps = Imports(init)
imps.set('pyramid.i18n', 'TranslationStringFactory')
if not init.attributes('_'):
att = Attribute(['_'], "TranslationStringFactory('%s')" % source.name)
att.__name__ = str(att.uuid)
init.insertafterimports(att)
def generate_profile_location(self, source, target):
targetclass = read_target_node(source, target.target)
module = targetclass.parent
ifspec = {
'path': 'agx.core.interfaces.IProfileLocation',
'name': 'IProfileLocation',
}
tok = token(str(targetclass.uuid), False, realizes=[])
if ifspec not in tok.realizes:
tok.realizes.append(ifspec)
tgv = TaggedValues(source)
name = tgv.direct('profile_name', 'generator:profile', None)
if not name:
name = source.name
#msg = 'profile_name tagged value not defined for %s!' % source.name
#raise ValueError(msg)
imps = Imports(module)
frompath = '.'.join(ifspec['path'].split('.')[:-1])
imps.set(frompath, [[ifspec['name'], None]])
attributenames = [att.targets[0] for att in targetclass.attributes()]
if 'name' not in attributenames:
att = Attribute()
att.__name__ = att.uuid
targetclass[att.name] = att
att.targets = ['name']
att.value = "'%s.profile.uml'" % name
if 'package' not in attributenames:
att = Attribute()
att.__name__ = att.uuid
targetclass[att.name] = att
att.targets = ['package']
att.value = dotted_path(source.parent)
imps.set('', [[att.value, None]])
# remove the import from this class
init = targetclass.parent.parent['__init__.py']
fromimp = '.'.join(implicit_dotted_path(source).split('.')[:-1])
imps = [imp for imp in init.imports() if imp.fromimport == fromimp]
for imp in imps:
init.detach(str(imp.uuid))
def sqljoinedtablebaseclass(self, source, target):
"""preparation for joined table inheritance base class.
"""
if source.stereotype('pyegg:stub'):
return
targetclass = read_target_node(source, target.target)
module = targetclass.parent
classatts = [att for att in targetclass.filtereditems(IAttribute)]
# if a class is a base class for joined_table_inheritance it must have
# discriminator and __mapper_args__
if not [a for a in classatts if a.targets == ['__mapper_args__']]:
abstract = Attribute(['__mapper_args__'],
"{'polymorphic_on':discriminator}")
abstract.__name__ = '__mapper_args__'
targetclass.insertfirst(abstract)
if not [a for a in classatts if a.targets == ['discriminator']]:
abstract = Attribute(['discriminator'], "Column(String)")
abstract.__name__ = 'discriminator'
targetclass.insertfirst(abstract)
def create_service(self, source, target):
"""create a module 'services.py' to hold the cornice services
create a docstring at the top of the module.
create an import statement (from cornice import Service).
create an attribute of the name of the UML::Class
and set it to a Service(with parameters)
parameters are name = name of the
"""
klass = read_target_node(source, target.target)
module = klass.parent
# create imports for cornice service
imps = Imports(module)
imps.set('cornice', 'Service') # from cornice import Service
# add the dep
deps = token('setup_dependencies', True, deps=[])
if not 'cornice' in deps.deps:
deps.deps.append('cornice')
# prepare for later: get name of the service
servicename = getservicename(source)
servicepath = getservicepath(source)
# create an Attribute that will define a cornice service
serviceattr = Attribute()
serviceattr.targets = [source.name]
serviceattr.value = 'Service(name="%s", path="%s")' % (servicename, servicepath)
serviceattr.__name__ = serviceattr.uuid
# lets insert it after the class definition
if not module.attributes(source.name):
module.insertafter(serviceattr, klass)
# mark importme dependencies for pyramid
tok = token('pyramid_importmes', True, packages=[])
if 'cornice' not in tok.packages:
tok.packages.append('cornice')
def plone__init__(self, source, target):
egg = egg_source(source)
eggname = egg.name
targetdir = read_target_node(source, target.target)
module = targetdir['__init__.py']
imp = Imports(module)
imp.set('zope.i18nmessageid', [['MessageFactory', None]])
value = 'MessageFactory("%s")' % eggname
atts = [att for att in module.attributes() if '_' in att.targets]
if atts:
atts[0].value = value
else:
module['_'] = Attribute('_', value)
def generate_profile_location(self, source, target):
targetclass = read_target_node(source, target.target)
module = targetclass.parent
ifspec = {
'path': 'agx.core.interfaces.IProfileLocation',
'name': 'IProfileLocation',
}
tok = token(str(targetclass.uuid), False, realizes=[])
if ifspec not in tok.realizes:
tok.realizes.append(ifspec)
tgv = TaggedValues(source)
name = tgv.direct('profile_name', 'generator:profile', None)
if not name:
name=source.name
#msg = 'profile_name tagged value not defined for %s!' % source.name
#raise ValueError(msg)
imps = Imports(module)
frompath = '.'.join(ifspec['path'].split('.')[:-1])
imps.set(frompath, [[ifspec['name'], None]])
attributenames = [att.targets[0] for att in targetclass.attributes()]
if 'name' not in attributenames:
att = Attribute()
att.__name__ = att.uuid
targetclass[att.name] = att
att.targets = ['name']
att.value = "'%s.profile.uml'" % name
if 'package' not in attributenames:
att = Attribute()
att.__name__ = att.uuid
targetclass[att.name] = att
att.targets = ['package']
att.value = dotted_path(source.parent)
imps.set('', [[att.value, None]])
# remove the import from this class
init = targetclass.parent.parent['__init__.py']
fromimp = '.'.join(implicit_dotted_path(source).split('.')[:-1])
imps = [imp for imp in init.imports() if imp.fromimport == fromimp]
for imp in imps:
init.detach(str(imp.uuid))
def sqlrelations_relations(self, source, target):
"""generate relations.
"""
if source.stereotype('pyegg:stub'):
return
if not source.stereotype('sql:sql_content'):
return
targetclass = read_target_node(source, target.target)
module = targetclass.parent
directory = module.parent
# get the last attribute and append there the relations
attrs = targetclass.attributes()
attrnames = [att.targets[0] for att in attrs]
try:
lastattr = targetclass.attributes()[-1]
except IndexError:
lastattr = None
outgoing_relations = token(str(source.uuid),
True, outgoing_relations=[]).outgoing_relations
imps = Imports(module)
if outgoing_relations:
imps.set('sqlalchemy.orm', [['relationship', None]])
for relend in outgoing_relations:
assoc = relend.association
if relend==relend.association.memberEnds[0]:
otherend = relend.association.memberEnds[1]
else:
otherend = relend.association.memberEnds[0]
#Association classes are handled seperately
#once we support association tables, we have to handle it here
tgv = TaggedValues(assoc)
if IAssociationClass.providedBy(assoc):
# tgv = TaggedValues(otherend) We need to build support for tgvs on
# member ends later
klass = relend.type
otherclass = relend.association
relname = token(str(otherend.uuid), True, relname=otherend.name+'_associations').relname
else:
klass = relend.type
otherclass = otherend.type
relname = otherend.name
if relname not in attrnames:
attr = Attribute()
attr.__name__ = str(attr.uuid)
if lastattr:
targetclass.insertafter(attr, lastattr)
else:
targetclass.insertfirst(attr)
attr.targets = [relname]
options = {}
# collect options for relationship
if otherend.aggregationkind == 'composite':
options['cascade'] = "'all, delete-orphan'"
if assoc.stereotype('sql:ordered'):
order_by = tgv.direct('order_by', 'sql:ordered', None)
if not order_by:
msg = 'when setting a relation ordered you have to ' +\
'specify order_by!'
raise ValueError(msg)
# if not prefixed, lets prefix it
if not '.' in order_by:
order_by = '%s.%s' % (otherclass.name, order_by)
options['order_by'] = "'%s'" % order_by
if assoc.stereotype('sql:attribute_mapped'):
keyname = tgv.direct('key', 'sql:attribute_mapped', None)
if not keyname:
msg = 'when defining attribute_mapped you have to ' + \
'specify a key'
raise ValueError(msg)
if assoc.stereotype('sql:ordered'):
# support for ordered mapped collection
# in this case we have to provide our own collection
# see http://docs.sqlalchemy.org/en/rel_0_7/orm/collections.html,
# secion 'Custom Dictionary-Based Collections'
fname = 'orderedcollection.py'
if fname not in directory:
src = JinjaTemplate()
src.template = templatepath(fname + '.jinja')
src.params = {}
directory[fname] = src
# XXX: so that emptymoduleremoval doesnt kick the
# template out better would be that jinjatemplates
# dont get removed at all
token('pymodules', True, modules=set()).modules.add(src)
options['collection_class'] = \
"ordered_attribute_mapped_collection('%s')" % keyname
imps.set('orderedcollection',
[['ordered_attribute_mapped_collection', None]])
# unordered
else:
options['collection_class'] = \
"attribute_mapped_collection('%s')" % keyname
imps.set('sqlalchemy.orm.collections',
[['attribute_mapped_collection', None]])
# make the primaryjoin stmt
if 1 or not IAssociationClass.providedBy(relend.association):
tok = token(str(relend.uuid), True, joins=[])
if tok.joins:
options['primaryjoin'] = "'%s'" % ','.join(tok.joins)
# XXX: .navigable isn't yet correctly parsed from uml, thus the
# hardcoding
if True or relend.navigable:
options['backref'] = "'%s'" % relend.name.lower()
if assoc.stereotype('sql:lazy'):
laziness = tgv.direct('laziness', 'sql:lazy', 'dynamic')
options['lazy'] = "'%s'" % laziness
#convert options into keyword params
oparray = []
for k in options:
oparray.append('%s = %s' % (k, options[k]))
attr.value = "relationship('%s', %s)" % (
otherclass.name, ', '.join(oparray))
def sqlcontentclass(self, source, target):
"""sqlalchemy class.
"""
if source.stereotype('pyegg:stub'):
return
targetclass = read_target_node(source, target.target)
module = targetclass.parent
imps = Imports(module)
imps.set('sqlalchemy', [['Column', None],
['Integer', None],
['String', None],
['ForeignKey', None],
['Sequence', None]])
# find last import and do some assignments afterwards
lastimport = [imp for imp in module.filtereditems(IImport)][-1]
globalatts = [att for att in module.filtereditems(IAttribute)]
classatts = [att for att in targetclass.filtereditems(IAttribute)]
# generate the Base=declarative_base() statement
saconfig=get_z3c_saconfig(source)
if saconfig:
# if we have a z3c_saconfig setting we import the Base from
# the corresponding package
imps.set(dotted_path(saconfig)+'.saconfig','Base')
else:
# otherwise we create it by default
imps.set('sqlalchemy.ext.declarative', 'declarative_base')
att = Attribute(['Base'], 'declarative_base()')
att.__name__ = 'Base'
if not [a for a in globalatts if a.targets == ['Base']]:
module.insertafter(att, lastimport)
# generate the __tablename__ attribute
if not [a for a in classatts if a.targets == ['__tablename__']]:
tablename = Attribute(['__tablename__'],
"'%s'" % (get_tablename(source)))
tablename.__name__ = '__tablename__'
targetclass.insertfirst(tablename)
# if a class is a base class for concrete_table_inheritance it must be
# abstract
if source.stereotype('sql:concrete_table_inheritance'):
if not [a for a in classatts if a.targets == ['__abstract__']]:
abstract = Attribute(['__abstract__'], "True")
abstract.__name__ = '__abstract__'
targetclass.insertfirst(abstract)
# lets inherit from Base unless we dont inherit from a sql_content class
has_sql_parent = False
joined_parents = []
table_per_class_parents = []
for inh in Inheritance(source).values():
if inh.context.stereotype('sql:sql_content'):
has_sql_parent = True
if inh.context.stereotype('sql:joined_table_inheritance'):
joined_parents.append(inh.context)
elif inh.context.stereotype('sql:concrete_table_inheritance'):
table_per_class_parents.append(inh.context)
else:
msg = 'when inheriting from an sql_content class (%s) ' + \
'the parent has to have either ' + \
'<<joined_table_inheritance>> or ' + \
'<<concrete_table_inheritance>> stereotype! ' + \
'see "http://docs.sqlalchemy.org/en/rel_0_7/' + \
'orm/inheritance.html" for further info'
msg = msg % source.name
raise ValueError(msg)
if targetclass.bases == ['object']:
targetclass.bases = ['Base']
else:
if not has_sql_parent and 'Base' not in targetclass.bases:
targetclass.bases.insert(0, 'Base')
# if the class has parents that are joined base classes
# we need __mapper_args__ and a foreign primary key
for parent in joined_parents:
pks = get_pks(parent)
if not pks:
msg = 'class %s must have a primary key defined!' % parent.name
raise ValueError(msg)
pk = pks[0]
pkname = get_colid(pk)
pfkname = pkname
typename = pk.type.name
if pk.type.stereotype('sql:sql_type'):
tgv = TaggedValues(pk.type)
typename = tgv.direct('classname', 'sql:sql_type', typename)
fk = "ForeignKey('%s.%s')" % (get_tablename(parent), pkname)
pfkstmt = "Column(%s, %s,primary_key = True)" % (typename, fk)
if not [a for a in classatts if a.targets == [pfkname]]:
pfk = Attribute([pfkname], pfkstmt)
pfk.__name__ = pfkname
targetclass.insertfirst(pfk)
if not [a for a in classatts if a.targets == ['__mapper_args__']]:
mapper_val = "{'polymorphic_identity':'%s'}" % source.name.lower()
abstract = Attribute(['__mapper_args__'], mapper_val)
abstract.__name__ = '__mapper_args__'
targetclass.insertfirst(abstract)
