Commit 8e973593 authored by Jim Fulton's avatar Jim Fulton

Split off from Persistence.

parent 592b1866
#!/usr/local/bin/python
# $What$
__doc__='''Python implementation of persistent base types
$Id: PersistentMapping.py,v 1.1 1997/12/15 17:51:33 jim Exp $'''
# Copyright
#
# Copyright 1996 Digital Creations, L.C., 910 Princess Anne
# Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
# rights reserved. Copyright in this software is owned by DCLC,
# unless otherwise indicated. Permission to use, copy and
# distribute this software is hereby granted, provided that the
# above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear. Note that
# any product, process or technology described in this software
# may be the subject of other Intellectual Property rights
# reserved by Digital Creations, L.C. and are not licensed
# hereunder.
#
# Trademarks
#
# Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
# All other trademarks are owned by their respective companies.
#
# No Warranty
#
# The software is provided "as is" without warranty of any kind,
# either express or implied, including, but not limited to, the
# implied warranties of merchantability, fitness for a particular
# purpose, or non-infringement. This software could include
# technical inaccuracies or typographical errors. Changes are
# periodically made to the software; these changes will be
# incorporated in new editions of the software. DCLC may make
# improvements and/or changes in this software at any time
# without notice.
#
# Limitation Of Liability
#
# In no event will DCLC be liable for direct, indirect, special,
# incidental, economic, cover, or consequential damages arising
# out of the use of or inability to use this software even if
# advised of the possibility of such damages. Some states do not
# allow the exclusion or limitation of implied warranties or
# limitation of liability for incidental or consequential
# damages, so the above limitation or exclusion may not apply to
# you.
#
#
# If you have questions regarding this software,
# contact:
#
# Digital Creations, L.C.
# 910 Princess Ann Street
# Fredericksburge, Virginia 22401
#
# info@digicool.com
#
# (540) 371-6909
#
__version__='$Revision: 1.1 $'[11:-2]
import Persistence
class PersistentMapping(Persistence.Persistent):
"""A persistent wrapper for mapping objects.
This class allows wrapping of mapping objects so that
object changes are registered. As a side effect,
mapping objects may be subclassed.
"""
def __init__(self,container=None):
if container is None: container={}
self._container=container
def __getitem__(self, key):
return self._container[key]
def __setitem__(self, key, v):
self._container[key]=v
try: del self._v_keys
except: pass
self.__changed__(1)
def __delitem__(self, key):
del self._container[key]
try: del self._v_keys
except: pass
self.__changed__(1)
def __len__(self): return len(self._container)
def keys(self):
try: return self._v_keys
except: pass
keys=self._v_keys=filter(
lambda k: k[:1]!='_',
self._container.keys())
keys.sort()
return keys
def clear(self):
self._container={}
if hasattr(self,'_v_keys'): del self._v_keys
def values(self):
return map(lambda k, d=self: d[k], self.keys())
def items(self):
return map(lambda k, d=self: (k,d[k]), self.keys())
def has_key(self,key): return self._container.has_key(key)
############################################################################
# $Log: PersistentMapping.py,v $
# Revision 1.1 1997/12/15 17:51:33 jim
# Split off from Persistence.
#
#!/usr/local/bin/python
# $What$
__doc__='''Python implementation of persistent base types
$Id: PersistentMapping.py,v 1.1 1997/12/15 17:51:33 jim Exp $'''
# Copyright
#
# Copyright 1996 Digital Creations, L.C., 910 Princess Anne
# Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
# rights reserved. Copyright in this software is owned by DCLC,
# unless otherwise indicated. Permission to use, copy and
# distribute this software is hereby granted, provided that the
# above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear. Note that
# any product, process or technology described in this software
# may be the subject of other Intellectual Property rights
# reserved by Digital Creations, L.C. and are not licensed
# hereunder.
#
# Trademarks
#
# Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
# All other trademarks are owned by their respective companies.
#
# No Warranty
#
# The software is provided "as is" without warranty of any kind,
# either express or implied, including, but not limited to, the
# implied warranties of merchantability, fitness for a particular
# purpose, or non-infringement. This software could include
# technical inaccuracies or typographical errors. Changes are
# periodically made to the software; these changes will be
# incorporated in new editions of the software. DCLC may make
# improvements and/or changes in this software at any time
# without notice.
#
# Limitation Of Liability
#
# In no event will DCLC be liable for direct, indirect, special,
# incidental, economic, cover, or consequential damages arising
# out of the use of or inability to use this software even if
# advised of the possibility of such damages. Some states do not
# allow the exclusion or limitation of implied warranties or
# limitation of liability for incidental or consequential
# damages, so the above limitation or exclusion may not apply to
# you.
#
#
# If you have questions regarding this software,
# contact:
#
# Digital Creations, L.C.
# 910 Princess Ann Street
# Fredericksburge, Virginia 22401
#
# info@digicool.com
#
# (540) 371-6909
#
__version__='$Revision: 1.1 $'[11:-2]
import Persistence
class PersistentMapping(Persistence.Persistent):
"""A persistent wrapper for mapping objects.
This class allows wrapping of mapping objects so that
object changes are registered. As a side effect,
mapping objects may be subclassed.
"""
def __init__(self,container=None):
if container is None: container={}
self._container=container
def __getitem__(self, key):
return self._container[key]
def __setitem__(self, key, v):
self._container[key]=v
try: del self._v_keys
except: pass
self.__changed__(1)
def __delitem__(self, key):
del self._container[key]
try: del self._v_keys
except: pass
self.__changed__(1)
def __len__(self): return len(self._container)
def keys(self):
try: return self._v_keys
except: pass
keys=self._v_keys=filter(
lambda k: k[:1]!='_',
self._container.keys())
keys.sort()
return keys
def clear(self):
self._container={}
if hasattr(self,'_v_keys'): del self._v_keys
def values(self):
return map(lambda k, d=self: d[k], self.keys())
def items(self):
return map(lambda k, d=self: (k,d[k]), self.keys())
def has_key(self,key): return self._container.has_key(key)
############################################################################
# $Log: PersistentMapping.py,v $
# Revision 1.1 1997/12/15 17:51:33 jim
# Split off from Persistence.
#
#!/usr/local/bin/python
# $What$
__doc__='''Python implementation of persistent base types
$Id: mapping.py,v 1.1 1997/12/15 17:51:33 jim Exp $'''
# Copyright
#
# Copyright 1996 Digital Creations, L.C., 910 Princess Anne
# Street, Suite 300, Fredericksburg, Virginia 22401 U.S.A. All
# rights reserved. Copyright in this software is owned by DCLC,
# unless otherwise indicated. Permission to use, copy and
# distribute this software is hereby granted, provided that the
# above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear. Note that
# any product, process or technology described in this software
# may be the subject of other Intellectual Property rights
# reserved by Digital Creations, L.C. and are not licensed
# hereunder.
#
# Trademarks
#
# Digital Creations & DCLC, are trademarks of Digital Creations, L.C..
# All other trademarks are owned by their respective companies.
#
# No Warranty
#
# The software is provided "as is" without warranty of any kind,
# either express or implied, including, but not limited to, the
# implied warranties of merchantability, fitness for a particular
# purpose, or non-infringement. This software could include
# technical inaccuracies or typographical errors. Changes are
# periodically made to the software; these changes will be
# incorporated in new editions of the software. DCLC may make
# improvements and/or changes in this software at any time
# without notice.
#
# Limitation Of Liability
#
# In no event will DCLC be liable for direct, indirect, special,
# incidental, economic, cover, or consequential damages arising
# out of the use of or inability to use this software even if
# advised of the possibility of such damages. Some states do not
# allow the exclusion or limitation of implied warranties or
# limitation of liability for incidental or consequential
# damages, so the above limitation or exclusion may not apply to
# you.
#
#
# If you have questions regarding this software,
# contact:
#
# Digital Creations, L.C.
# 910 Princess Ann Street
# Fredericksburge, Virginia 22401
#
# info@digicool.com
#
# (540) 371-6909
#
__version__='$Revision: 1.1 $'[11:-2]
import Persistence
class PersistentMapping(Persistence.Persistent):
"""A persistent wrapper for mapping objects.
This class allows wrapping of mapping objects so that
object changes are registered. As a side effect,
mapping objects may be subclassed.
"""
def __init__(self,container=None):
if container is None: container={}
self._container=container
def __getitem__(self, key):
return self._container[key]
def __setitem__(self, key, v):
self._container[key]=v
try: del self._v_keys
except: pass
self.__changed__(1)
def __delitem__(self, key):
del self._container[key]
try: del self._v_keys
except: pass
self.__changed__(1)
def __len__(self): return len(self._container)
def keys(self):
try: return self._v_keys
except: pass
keys=self._v_keys=filter(
lambda k: k[:1]!='_',
self._container.keys())
keys.sort()
return keys
def clear(self):
self._container={}
if hasattr(self,'_v_keys'): del self._v_keys
def values(self):
return map(lambda k, d=self: d[k], self.keys())
def items(self):
return map(lambda k, d=self: (k,d[k]), self.keys())
def has_key(self,key): return self._container.has_key(key)
############################################################################
# $Log: mapping.py,v $
# Revision 1.1 1997/12/15 17:51:33 jim
# Split off from Persistence.
#
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