def _migrateSetValue(self, name, value, old_schema=None, **kw):
"""Try to set an object value using a variety of methods."""
schema = self.Schema()
# Migrate pre-AT 1.3 schemas.
schema = fixSchema(schema)
field = schema.get(name, None)
# Try using the field's mutator
if field:
mutator = field.getMutator(self)
if mutator is not None:
try:
args = [value,]
mapply(mutator, *args, **kw)
return
except (ConflictError, KeyboardInterrupt):
raise
except:
log_exc()
else:
# Try setting an existing attribute
if shasattr(self, name):
setattr(self, name, value)
return
raise ValueError, 'name = %s, value = %s' % (name, value)
def _migrateSetValue(self, name, value, old_schema=None, **kw):
"""Try to set an object value using a variety of methods."""
schema = self.Schema()
# Migrate pre-AT 1.3 schemas.
schema = fixSchema(schema)
field = schema.get(name, None)
# Try using the field's mutator
if field:
mutator = field.getMutator(self)
if mutator is not None:
try:
args = [value]
mapply(mutator, *args, **kw)
return
except (ConflictError, KeyboardInterrupt):
raise
except:
log_exc()
else:
# Try setting an existing attribute
if shasattr(self, name):
setattr(self, name, value)
return
raise ValueError, 'name = %s, value = %s' % (name, value)
def _migrateGetValue(self, name, new_schema=None):
"""Try to get a value from an object using a variety of methods."""
schema = self.Schema()
# Migrate pre-AT 1.3 schemas.
schema = fixSchema(schema)
# First see if the new field name is managed by the current schema
field = schema.get(getattr(new_schema.get(name,None),'old_field_name',name), None)
if field:
# At very first try to use the BaseUnit itself
try:
if IFileField.providedBy(field):
return field.getBaseUnit(self)
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# First try the edit accessor
try:
editAccessor = field.getEditAccessor(self)
if editAccessor:
return editAccessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# No luck -- now try the accessor
try:
accessor = field.getAccessor(self)
if accessor:
return accessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# No luck use standard method to get the value
return field.get(self)
# Still no luck -- try to get the value directly
# this part should be remove because for some fields this will fail
# if you get the value directly for example for FixPointField
# stored value is (0,0) but the input value is a string.
# at this time FixPointField fails if he got a tuple as input value
# Because of this line value = value.replace(',','.')
try:
return self[field.getName()]
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- see if the new accessor method is present
# in the current object.
if new_schema:
new_field = new_schema.get(name)
# Try the new edit accessor
try:
editAccessor = new_field.getEditAccessor(self)
if editAccessor:
return editAccessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- now try the accessor
try:
accessor = new_field.getAccessor(self)
if accessor:
return accessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Still no luck -- try to get the value directly using the new name
try:
return self[new_field.getName()]
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- now see if the current object has an attribute
# with the same name
# as the new field
if shasattr(self, name):
return getattr(self, name)
raise ValueError, 'name = %s' % (name)
def _migrateGetValue(self, name, new_schema=None):
"""Try to get a value from an object using a variety of methods."""
schema = self.Schema()
# Migrate pre-AT 1.3 schemas.
schema = fixSchema(schema)
# First see if the new field name is managed by the current schema
field = schema.get(getattr(new_schema.get(
name, None), 'old_field_name', name), None)
if field:
# At very first try to use the BaseUnit itself
try:
if IFileField.providedBy(field):
return field.getBaseUnit(self)
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# First try the edit accessor
try:
editAccessor = field.getEditAccessor(self)
if editAccessor:
return editAccessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# No luck -- now try the accessor
try:
accessor = field.getAccessor(self)
if accessor:
return accessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# No luck use standard method to get the value
return field.get(self)
# Still no luck -- try to get the value directly
# this part should be remove because for some fields this will fail
# if you get the value directly for example for FixPointField
# stored value is (0,0) but the input value is a string.
# at this time FixPointField fails if he got a tuple as input value
# Because of this line value = value.replace(',','.')
try:
return self[field.getName()]
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- see if the new accessor method is present
# in the current object.
if new_schema:
new_field = new_schema.get(name)
# Try the new edit accessor
try:
editAccessor = new_field.getEditAccessor(self)
if editAccessor:
return editAccessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- now try the accessor
try:
accessor = new_field.getAccessor(self)
if accessor:
return accessor()
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Still no luck -- try to get the value directly using the new name
try:
return self[new_field.getName()]
except (ConflictError, KeyboardInterrupt):
raise
except:
pass
# Nope -- now see if the current object has an attribute
# with the same name
# as the new field
if shasattr(self, name):
return getattr(self, name)
raise ValueError, 'name = %s' % (name)
