Mercurial > p > roundup > code
comparison roundup/hyperdb.py @ 156:9c5ddad06430
get() now has a default arg - for migration only.
| author | Richard Jones <richard@users.sourceforge.net> |
|---|---|
| date | Mon, 30 Jul 2001 02:38:31 +0000 |
| parents | 204f99944de0 |
| children | c580555a6508 |
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| 155:03bdef2d645b | 156:9c5ddad06430 |
|---|---|
| 1 # $Id: hyperdb.py,v 1.9 2001-07-29 09:28:23 richard Exp $ | 1 # $Id: hyperdb.py,v 1.10 2001-07-30 02:38:31 richard Exp $ |
| 2 | 2 |
| 3 # standard python modules | 3 # standard python modules |
| 4 import cPickle, re, string | 4 import cPickle, re, string |
| 5 | 5 |
| 6 # roundup modules | 6 # roundup modules |
| 56 class Database: | 56 class Database: |
| 57 # flag to set on retired entries | 57 # flag to set on retired entries |
| 58 RETIRED_FLAG = '__hyperdb_retired' | 58 RETIRED_FLAG = '__hyperdb_retired' |
| 59 | 59 |
| 60 | 60 |
| 61 _marker = [] | |
| 61 # | 62 # |
| 62 # The base Class class | 63 # The base Class class |
| 63 # | 64 # |
| 64 class Class: | 65 class Class: |
| 65 """The handle to a particular class of nodes in a hyperdatabase.""" | 66 """The handle to a particular class of nodes in a hyperdatabase.""" |
| 190 # done | 191 # done |
| 191 self.db.addnode(self.classname, newid, propvalues) | 192 self.db.addnode(self.classname, newid, propvalues) |
| 192 self.db.addjournal(self.classname, newid, 'create', propvalues) | 193 self.db.addjournal(self.classname, newid, 'create', propvalues) |
| 193 return newid | 194 return newid |
| 194 | 195 |
| 195 def get(self, nodeid, propname): | 196 def get(self, nodeid, propname, default=_marker): |
| 196 """Get the value of a property on an existing node of this class. | 197 """Get the value of a property on an existing node of this class. |
| 197 | 198 |
| 198 'nodeid' must be the id of an existing node of this class or an | 199 'nodeid' must be the id of an existing node of this class or an |
| 199 IndexError is raised. 'propname' must be the name of a property | 200 IndexError is raised. 'propname' must be the name of a property |
| 200 of this class or a KeyError is raised. | 201 of this class or a KeyError is raised. |
| 201 """ | 202 """ |
| 202 if propname == 'id': | 203 if propname == 'id': |
| 203 return nodeid | 204 return nodeid |
| 204 # nodeid = str(nodeid) | 205 # nodeid = str(nodeid) |
| 205 d = self.db.getnode(self.classname, nodeid) | 206 d = self.db.getnode(self.classname, nodeid) |
| 207 if not d.has_key(propname) and default is not _marker: | |
| 208 return default | |
| 206 return d[propname] | 209 return d[propname] |
| 207 | 210 |
| 208 # XXX not in spec | 211 # XXX not in spec |
| 209 def getnode(self, nodeid): | 212 def getnode(self, nodeid): |
| 210 ''' Return a convenience wrapper for the node | 213 ''' Return a convenience wrapper for the node |
| 788 cl.create(name=option[i], order=i) | 791 cl.create(name=option[i], order=i) |
| 789 return hyperdb.Link(name) | 792 return hyperdb.Link(name) |
| 790 | 793 |
| 791 # | 794 # |
| 792 # $Log: not supported by cvs2svn $ | 795 # $Log: not supported by cvs2svn $ |
| 796 # Revision 1.9 2001/07/29 09:28:23 richard | |
| 797 # Fixed sorting by clicking on column headings. | |
| 798 # | |
| 793 # Revision 1.8 2001/07/29 08:27:40 richard | 799 # Revision 1.8 2001/07/29 08:27:40 richard |
| 794 # Fixed handling of passed-in values in form elements (ie. during a | 800 # Fixed handling of passed-in values in form elements (ie. during a |
| 795 # drill-down) | 801 # drill-down) |
| 796 # | 802 # |
| 797 # Revision 1.7 2001/07/29 07:01:39 richard | 803 # Revision 1.7 2001/07/29 07:01:39 richard |