root / pykota / trunk / pykota / storages / pgstorage.py @ 1244

Revision 1244, 26.2 kB (checked in by uid67467, 20 years ago)

Tries to workaround possible integrity violations when retrieving printer groups

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1# PyKota
2# -*- coding: ISO-8859-15 -*-
3#
4# PyKota : Print Quotas for CUPS and LPRng
5#
6# (c) 2003 Jerome Alet <alet@librelogiciel.com>
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program; if not, write to the Free Software
19# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
20#
21# $Id$
22#
23# $Log$
24# Revision 1.26  2003/12/29 14:12:48  uid67467
25# Tries to workaround possible integrity violations when retrieving printer groups
26#
27# Revision 1.25  2003/12/27 16:49:25  uid67467
28# Should be ok now.
29#
30# Revision 1.24  2003/11/29 22:02:14  jalet
31# Don't try to retrieve the user print quota information if current printer
32# doesn't exist.
33#
34# Revision 1.23  2003/11/23 19:01:37  jalet
35# Job price added to history
36#
37# Revision 1.22  2003/11/21 14:28:46  jalet
38# More complete job history.
39#
40# Revision 1.21  2003/11/12 13:06:38  jalet
41# Bug fix wrt no user/group name command line argument to edpykota
42#
43# Revision 1.20  2003/10/09 21:25:26  jalet
44# Multiple printer names or wildcards can be passed on the command line
45# separated with commas.
46# Beta phase.
47#
48# Revision 1.19  2003/10/08 07:01:20  jalet
49# Job history can be disabled.
50# Some typos in README.
51# More messages in setup script.
52#
53# Revision 1.18  2003/10/07 09:07:30  jalet
54# Character encoding added to please latest version of Python
55#
56# Revision 1.17  2003/10/06 13:12:28  jalet
57# More work on caching
58#
59# Revision 1.16  2003/10/03 18:01:49  jalet
60# Nothing interesting...
61#
62# Revision 1.15  2003/10/03 12:27:03  jalet
63# Several optimizations, especially with LDAP backend
64#
65# Revision 1.14  2003/10/03 08:57:55  jalet
66# Caching mechanism now caches all that's cacheable.
67#
68# Revision 1.13  2003/10/02 20:23:18  jalet
69# Storage caching mechanism added.
70#
71# Revision 1.12  2003/08/17 14:20:25  jalet
72# Bug fix by Oleg Biteryakov
73#
74# Revision 1.11  2003/07/29 20:55:17  jalet
75# 1.14 is out !
76#
77# Revision 1.10  2003/07/16 21:53:08  jalet
78# Really big modifications wrt new configuration file's location and content.
79#
80# Revision 1.9  2003/07/14 17:20:15  jalet
81# Bug in postgresql storage when modifying the prices for a printer
82#
83# Revision 1.8  2003/07/14 14:18:17  jalet
84# Wrong documentation strings
85#
86# Revision 1.7  2003/07/09 20:17:07  jalet
87# Email field added to PostgreSQL schema
88#
89# Revision 1.6  2003/07/07 11:49:24  jalet
90# Lots of small fixes with the help of PyChecker
91#
92# Revision 1.5  2003/07/07 08:33:19  jalet
93# Bug fix due to a typo in LDAP code
94#
95# Revision 1.4  2003/06/30 13:54:21  jalet
96# Sorts by user / group name
97#
98# Revision 1.3  2003/06/25 14:10:01  jalet
99# Hey, it may work (edpykota --reset excepted) !
100#
101# Revision 1.2  2003/06/12 21:09:57  jalet
102# wrongly placed code.
103#
104# Revision 1.1  2003/06/10 16:37:54  jalet
105# Deletion of the second user which is not needed anymore.
106# Added a debug configuration field in /etc/pykota.conf
107# All queries can now be sent to the logger in debug mode, this will
108# greatly help improve performance when time for this will come.
109#
110#
111#
112#
113
114from pykota.storage import PyKotaStorageError,BaseStorage,StorageObject,StorageUser,StorageGroup,StoragePrinter,StorageLastJob,StorageUserPQuota,StorageGroupPQuota
115
116try :
117    import pg
118except ImportError :   
119    import sys
120    # TODO : to translate or not to translate ?
121    raise PyKotaStorageError, "This python version (%s) doesn't seem to have the PygreSQL module installed correctly." % sys.version.split()[0]
122
123class Storage(BaseStorage) :
124    def __init__(self, pykotatool, host, dbname, user, passwd) :
125        """Opens the PostgreSQL database connection."""
126        BaseStorage.__init__(self, pykotatool)
127        try :
128            (host, port) = host.split(":")
129            port = int(port)
130        except ValueError :   
131            port = -1         # Use PostgreSQL's default tcp/ip port (5432).
132       
133        try :
134            self.database = pg.connect(host=host, port=port, dbname=dbname, user=user, passwd=passwd)
135        except pg.error, msg :
136            raise PyKotaStorageError, msg
137        else :   
138            self.closed = 0
139            self.tool.logdebug("Database opened (host=%s, port=%s, dbname=%s, user=%s)" % (host, port, dbname, user))
140           
141    def close(self) :   
142        """Closes the database connection."""
143        if not self.closed :
144            self.database.close()
145            self.closed = 1
146            self.tool.logdebug("Database closed.")
147       
148    def beginTransaction(self) :   
149        """Starts a transaction."""
150        self.database.query("BEGIN;")
151        self.tool.logdebug("Transaction begins...")
152       
153    def commitTransaction(self) :   
154        """Commits a transaction."""
155        self.database.query("COMMIT;")
156        self.tool.logdebug("Transaction committed.")
157       
158    def rollbackTransaction(self) :     
159        """Rollbacks a transaction."""
160        self.database.query("ROLLBACK;")
161        self.tool.logdebug("Transaction aborted.")
162       
163    def doSearch(self, query) :
164        """Does a search query."""
165        query = query.strip()   
166        if not query.endswith(';') :   
167            query += ';'
168        try :
169            self.tool.logdebug("QUERY : %s" % query)
170            result = self.database.query(query)
171        except pg.error, msg :   
172            raise PyKotaStorageError, msg
173        else :   
174            if (result is not None) and (result.ntuples() > 0) : 
175                return result.dictresult()
176           
177    def doModify(self, query) :
178        """Does a (possibly multiple) modify query."""
179        query = query.strip()   
180        if not query.endswith(';') :   
181            query += ';'
182        try :
183            self.tool.logdebug("QUERY : %s" % query)
184            result = self.database.query(query)
185        except pg.error, msg :   
186            raise PyKotaStorageError, msg
187        else :   
188            return result
189           
190    def doQuote(self, field) :
191        """Quotes a field for use as a string in SQL queries."""
192        if type(field) == type(0.0) : 
193            typ = "decimal"
194        elif type(field) == type(0) :   
195            typ = "int"
196        else :   
197            typ = "text"
198        return pg._quote(field, typ)
199       
200    def getAllUsersNames(self) :   
201        """Extracts all user names."""
202        usernames = []
203        result = self.doSearch("SELECT username FROM users;")
204        if result :
205            usernames = [record["username"] for record in result]
206        return usernames
207       
208    def getAllGroupsNames(self) :   
209        """Extracts all group names."""
210        groupnames = []
211        result = self.doSearch("SELECT groupname FROM groups;")
212        if result :
213            groupnames = [record["groupname"] for record in result]
214        return groupnames
215       
216    def getUserFromBackend(self, username) :   
217        """Extracts user information given its name."""
218        user = StorageUser(self, username)
219        result = self.doSearch("SELECT * FROM users WHERE username=%s LIMIT 1" % self.doQuote(username))
220        if result :
221            fields = result[0]
222            user.ident = fields.get("id")
223            user.LimitBy = fields.get("limitby")
224            user.AccountBalance = fields.get("balance")
225            user.LifeTimePaid = fields.get("lifetimepaid")
226            user.Email = fields.get("email")
227            user.Exists = 1
228        return user
229       
230    def getGroupFromBackend(self, groupname) :   
231        """Extracts group information given its name."""
232        group = StorageGroup(self, groupname)
233        result = self.doSearch("SELECT * FROM groups WHERE groupname=%s LIMIT 1" % self.doQuote(groupname))
234        if result :
235            fields = result[0]
236            group.ident = fields.get("id")
237            group.LimitBy = fields.get("limitby")
238            result = self.doSearch("SELECT SUM(balance) AS balance, SUM(lifetimepaid) AS lifetimepaid FROM users WHERE id IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % self.doQuote(group.ident))
239            if result :
240                fields = result[0]
241                group.AccountBalance = fields.get("balance")
242                group.LifeTimePaid = fields.get("lifetimepaid")
243            group.Exists = 1
244        return group
245       
246    def getPrinterFromBackend(self, printername) :       
247        """Extracts printer information given its name."""
248        printer = StoragePrinter(self, printername)
249        result = self.doSearch("SELECT * FROM printers WHERE printername=%s LIMIT 1" % self.doQuote(printername))
250        if result :
251            fields = result[0]
252            printer.ident = fields.get("id")
253            printer.PricePerJob = fields.get("priceperjob")
254            printer.PricePerPage = fields.get("priceperpage")
255            printer.LastJob = self.getPrinterLastJob(printer)
256            printer.Exists = 1
257        return printer   
258       
259    def getUserPQuotaFromBackend(self, user, printer) :       
260        """Extracts a user print quota."""
261        userpquota = StorageUserPQuota(self, user, printer)
262        if printer.Exists and user.Exists :
263            result = self.doSearch("SELECT id, lifepagecounter, pagecounter, softlimit, hardlimit, datelimit FROM userpquota WHERE userid=%s AND printerid=%s" % (self.doQuote(user.ident), self.doQuote(printer.ident)))
264            if result :
265                fields = result[0]
266                userpquota.ident = fields.get("id")
267                userpquota.PageCounter = fields.get("pagecounter")
268                userpquota.LifePageCounter = fields.get("lifepagecounter")
269                userpquota.SoftLimit = fields.get("softlimit")
270                userpquota.HardLimit = fields.get("hardlimit")
271                userpquota.DateLimit = fields.get("datelimit")
272                userpquota.Exists = 1
273        return userpquota
274       
275    def getGroupPQuotaFromBackend(self, group, printer) :       
276        """Extracts a group print quota."""
277        grouppquota = StorageGroupPQuota(self, group, printer)
278        if group.Exists :
279            result = self.doSearch("SELECT id, softlimit, hardlimit, datelimit FROM grouppquota WHERE groupid=%s AND printerid=%s" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
280            if result :
281                fields = result[0]
282                grouppquota.ident = fields.get("id")
283                grouppquota.SoftLimit = fields.get("softlimit")
284                grouppquota.HardLimit = fields.get("hardlimit")
285                grouppquota.DateLimit = fields.get("datelimit")
286                result = self.doSearch("SELECT SUM(lifepagecounter) AS lifepagecounter, SUM(pagecounter) AS pagecounter FROM userpquota WHERE printerid=%s AND userid IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % (self.doQuote(printer.ident), self.doQuote(group.ident)))
287                if result :
288                    fields = result[0]
289                    grouppquota.PageCounter = fields.get("pagecounter")
290                    grouppquota.LifePageCounter = fields.get("lifepagecounter")
291                grouppquota.Exists = 1
292        return grouppquota
293       
294    def getPrinterLastJobFromBackend(self, printer) :       
295        """Extracts a printer's last job information."""
296        lastjob = StorageLastJob(self, printer)
297        result = self.doSearch("SELECT jobhistory.id, jobid, userid, username, pagecounter, jobsize, jobprice, filename, title, copies, options, jobdate FROM jobhistory, users WHERE printerid=%s AND userid=users.id ORDER BY jobdate DESC LIMIT 1" % self.doQuote(printer.ident))
298        if result :
299            fields = result[0]
300            lastjob.ident = fields.get("id")
301            lastjob.JobId = fields.get("jobid")
302            lastjob.User = self.getUser(fields.get("username"))
303            lastjob.PrinterPageCounter = fields.get("pagecounter")
304            lastjob.JobSize = fields.get("jobsize")
305            lastjob.JobPrice = fields.get("jobprice")
306            lastjob.JobAction = fields.get("action")
307            lastjob.JobFileName = fields.get("filename")
308            lastjob.JobTitle = fields.get("title")
309            lastjob.JobCopies = fields.get("copies")
310            lastjob.JobOptions = fields.get("options")
311            lastjob.JobDate = fields.get("jobdate")
312            lastjob.Exists = 1
313        return lastjob
314           
315    def getGroupMembersFromBackend(self, group) :       
316        """Returns the group's members list."""
317        groupmembers = []
318        result = self.doSearch("SELECT * FROM groupsmembers JOIN users ON groupsmembers.userid=users.id WHERE groupid=%s" % self.doQuote(group.ident))
319        if result :
320            for record in result :
321                user = StorageUser(self, record.get("username"))
322                user.ident = record.get("userid")
323                user.LimitBy = record.get("limitby")
324                user.AccountBalance = record.get("balance")
325                user.LifeTimePaid = record.get("lifetimepaid")
326                user.Email = record.get("email")
327                user.Exists = 1
328                groupmembers.append(user)
329                self.cacheEntry("USERS", user.Name, user)
330        return groupmembers       
331       
332    def getUserGroupsFromBackend(self, user) :       
333        """Returns the user's groups list."""
334        groups = []
335        result = self.doSearch("SELECT groupname FROM groupsmembers JOIN groups ON groupsmembers.groupid=groups.id WHERE userid=%s" % self.doQuote(user.ident))
336        if result :
337            for record in result :
338                groups.append(self.getGroup(record.get("groupname")))
339        return groups       
340       
341    def getMatchingPrinters(self, printerpattern) :
342        """Returns the list of all printers for which name matches a certain pattern."""
343        printers = []
344        # We 'could' do a SELECT printername FROM printers WHERE printername LIKE ...
345        # but we don't because other storages semantics may be different, so every
346        # storage should use fnmatch to match patterns and be storage agnostic
347        result = self.doSearch("SELECT * FROM printers")
348        if result :
349            for record in result :
350                if self.tool.matchString(record["printername"], printerpattern.split(",")) :
351                    printer = StoragePrinter(self, record["printername"])
352                    printer.ident = record.get("id")
353                    printer.PricePerJob = record.get("priceperjob")
354                    printer.PricePerPage = record.get("priceperpage")
355                    printer.LastJob = self.getPrinterLastJob(printer)
356                    printer.Exists = 1
357                    printers.append(printer)
358                    self.cacheEntry("PRINTERS", printer.Name, printer)
359        return printers       
360       
361    def getPrinterUsersAndQuotas(self, printer, names=["*"]) :       
362        """Returns the list of users who uses a given printer, along with their quotas."""
363        usersandquotas = []
364        result = self.doSearch("SELECT users.id as uid,username,balance,lifetimepaid,limitby,email,userpquota.id,lifepagecounter,pagecounter,softlimit,hardlimit,datelimit FROM users JOIN userpquota ON users.id=userpquota.userid AND printerid=%s ORDER BY username ASC" % self.doQuote(printer.ident))
365        if result :
366            for record in result :
367                if self.tool.matchString(record.get("username"), names) :
368                    user = StorageUser(self, record.get("username"))
369                    user.ident = record.get("uid")
370                    user.LimitBy = record.get("limitby")
371                    user.AccountBalance = record.get("balance")
372                    user.LifeTimePaid = record.get("lifetimepaid")
373                    user.Email = record.get("email") 
374                    user.Exists = 1
375                    userpquota = StorageUserPQuota(self, user, printer)
376                    userpquota.ident = record.get("id")
377                    userpquota.PageCounter = record.get("pagecounter")
378                    userpquota.LifePageCounter = record.get("lifepagecounter")
379                    userpquota.SoftLimit = record.get("softlimit")
380                    userpquota.HardLimit = record.get("hardlimit")
381                    userpquota.DateLimit = record.get("datelimit")
382                    userpquota.Exists = 1
383                    usersandquotas.append((user, userpquota))
384                    self.cacheEntry("USERS", user.Name, user)
385                    self.cacheEntry("USERPQUOTAS", "%s@%s" % (user.Name, printer.Name), userpquota)
386        return usersandquotas
387               
388    def getPrinterGroupsAndQuotas(self, printer, names=["*"]) :       
389        """Returns the list of groups which uses a given printer, along with their quotas."""
390        groupsandquotas = []
391        result = self.doSearch("SELECT groupname FROM groups JOIN grouppquota ON groups.id=grouppquota.groupid AND printerid=%s ORDER BY groupname ASC" % self.doQuote(printer.ident))
392        if result :
393            for record in result :
394                if self.tool.matchString(record.get("groupname"), names) :
395                    group = self.getGroup(record.get("groupname"))
396                    grouppquota = self.getGroupPQuota(group, printer)
397                    groupsandquotas.append((group, grouppquota))
398        return groupsandquotas
399       
400    def getParentPrinters(self, printer) :   
401        """Get all the printer groups this printer is a member of."""
402        pgroups = []
403        result = self.doSearch("SELECT groupid,printername FROM printergroupsmembers JOIN printers ON groupid=id WHERE printerid=%s;" % self.doQuote(printer.ident))
404        if result :
405            for record in result :
406                if record["groupid"] != printer.ident : # in case of integrity violation
407                    parentprinter = self.getPrinter(record.get("printername"))
408                    if parentprinter.Exists :
409                        pgroups.append(parentprinter)
410        return pgroups
411       
412    def addPrinter(self, printername) :       
413        """Adds a printer to the quota storage, returns it."""
414        self.doModify("INSERT INTO printers (printername) VALUES (%s)" % self.doQuote(printername))
415        return self.getPrinter(printername)
416       
417    def addUser(self, user) :       
418        """Adds a user to the quota storage, returns its id."""
419        self.doModify("INSERT INTO users (username, limitby, balance, lifetimepaid, email) VALUES (%s, %s, %s, %s, %s)" % (self.doQuote(user.Name), self.doQuote(user.LimitBy), self.doQuote(user.AccountBalance), self.doQuote(user.LifeTimePaid), self.doQuote(user.Email)))
420        return self.getUser(user.Name)
421       
422    def addGroup(self, group) :       
423        """Adds a group to the quota storage, returns its id."""
424        self.doModify("INSERT INTO groups (groupname, limitby) VALUES (%s, %s)" % (self.doQuote(group.Name), self.doQuote(group.LimitBy)))
425        return self.getGroup(group.Name)
426
427    def addUserToGroup(self, user, group) :   
428        """Adds an user to a group."""
429        result = self.doSearch("SELECT COUNT(*) AS mexists FROM groupsmembers WHERE groupid=%s AND userid=%s" % (self.doQuote(group.ident), self.doQuote(user.ident)))
430        try :
431            mexists = int(result[0].get("mexists"))
432        except (IndexError, TypeError) :   
433            mexists = 0
434        if not mexists :   
435            self.doModify("INSERT INTO groupsmembers (groupid, userid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(user.ident)))
436           
437    def addUserPQuota(self, user, printer) :
438        """Initializes a user print quota on a printer."""
439        self.doModify("INSERT INTO userpquota (userid, printerid) VALUES (%s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident)))
440        return self.getUserPQuota(user, printer)
441       
442    def addGroupPQuota(self, group, printer) :
443        """Initializes a group print quota on a printer."""
444        self.doModify("INSERT INTO grouppquota (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
445        return self.getGroupPQuota(group, printer)
446       
447    def writePrinterPrices(self, printer) :   
448        """Write the printer's prices back into the storage."""
449        self.doModify("UPDATE printers SET priceperpage=%s, priceperjob=%s WHERE id=%s" % (self.doQuote(printer.PricePerPage), self.doQuote(printer.PricePerJob), self.doQuote(printer.ident)))
450       
451    def writeUserLimitBy(self, user, limitby) :   
452        """Sets the user's limiting factor."""
453        self.doModify("UPDATE users SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(user.ident)))
454       
455    def writeGroupLimitBy(self, group, limitby) :   
456        """Sets the group's limiting factor."""
457        self.doModify("UPDATE groups SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(group.ident)))
458       
459    def writeUserPQuotaDateLimit(self, userpquota, datelimit) :   
460        """Sets the date limit permanently for a user print quota."""
461        self.doModify("UPDATE userpquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(userpquota.ident)))
462           
463    def writeGroupPQuotaDateLimit(self, grouppquota, datelimit) :   
464        """Sets the date limit permanently for a group print quota."""
465        self.doModify("UPDATE grouppquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(grouppquota.ident)))
466       
467    def writeUserPQuotaPagesCounters(self, userpquota, newpagecounter, newlifepagecounter) :   
468       """Sets the new page counters permanently for a user print quota."""
469       self.doModify("UPDATE userpquota SET pagecounter=%s,lifepagecounter=%s WHERE id=%s" % (self.doQuote(newpagecounter), self.doQuote(newlifepagecounter), self.doQuote(userpquota.ident)))
470       
471    def writeUserAccountBalance(self, user, newbalance, newlifetimepaid=None) :   
472       """Sets the new account balance and eventually new lifetime paid."""
473       if newlifetimepaid is not None :
474           self.doModify("UPDATE users SET balance=%s, lifetimepaid=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(newlifetimepaid), self.doQuote(user.ident)))
475       else :   
476           self.doModify("UPDATE users SET balance=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(user.ident)))
477           
478    def writeLastJobSize(self, lastjob, jobsize, jobprice) :       
479        """Sets the last job's size permanently."""
480        self.doModify("UPDATE jobhistory SET jobsize=%s, jobprice=%s WHERE id=%s" % (self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(lastjob.ident)))
481       
482    def writeJobNew(self, printer, user, jobid, pagecounter, action, jobsize=None, jobprice=None, filename=None, title=None, copies=None, options=None) :   
483        """Adds a job in a printer's history."""
484        if (not self.disablehistory) or (not printer.LastJob.Exists) :
485            if jobsize is not None :
486                self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action, jobsize, jobprice, filename, title, copies, options) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options)))
487            else :   
488                self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action, filename, title, copies, options) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options)))
489        else :       
490            # here we explicitly want to reset jobsize to NULL if needed
491            self.doModify("UPDATE jobhistory SET userid=%s, jobid=%s, pagecounter=%s, action=%s, jobsize=%s, jobprice=%s, filename=%s, title=%s, copies=%s, options=%s, jobdate=now() WHERE id=%s;" % (self.doQuote(user.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options), self.doQuote(printer.LastJob.ident)))
492           
493    def writeUserPQuotaLimits(self, userpquota, softlimit, hardlimit) :
494        """Sets soft and hard limits for a user quota."""
495        self.doModify("UPDATE userpquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(userpquota.ident)))
496       
497    def writeGroupPQuotaLimits(self, grouppquota, softlimit, hardlimit) :
498        """Sets soft and hard limits for a group quota on a specific printer."""
499        self.doModify("UPDATE grouppquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(grouppquota.ident)))
500
501    def deleteUser(self, user) :   
502        """Completely deletes an user from the Quota Storage."""
503        # TODO : What should we do if we delete the last person who used a given printer ?
504        # TODO : we can't reassign the last job to the previous one, because next user would be
505        # TODO : incorrectly charged (overcharged).
506        for q in [ 
507                    "DELETE FROM groupsmembers WHERE userid=%s" % self.doQuote(user.ident),
508                    "DELETE FROM jobhistory WHERE userid=%s" % self.doQuote(user.ident),
509                    "DELETE FROM userpquota WHERE userid=%s" % self.doQuote(user.ident),
510                    "DELETE FROM users WHERE id=%s" % self.doQuote(user.ident),
511                  ] :
512            self.doModify(q)
513       
514    def deleteGroup(self, group) :   
515        """Completely deletes a group from the Quota Storage."""
516        for q in [
517                   "DELETE FROM groupsmembers WHERE groupid=%s" % self.doQuote(group.ident),
518                   "DELETE FROM grouppquota WHERE groupid=%s" % self.doQuote(group.ident),
519                   "DELETE FROM groups WHERE id=%s" % self.doQuote(group.ident),
520                 ] : 
521            self.doModify(q)
522       
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