root / pykota / trunk / pykota / storages / pgstorage.py @ 1259

Revision 1259, 27.2 kB (checked in by jalet, 20 years ago)

Additionnal check to not create a circular printers group.

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1# PyKota
2# -*- coding: ISO-8859-15 -*-
3#
4# PyKota : Print Quotas for CUPS and LPRng
5#
6# (c) 2003-2004 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 1.30  2004/01/08 16:33:27  jalet
25# Additionnal check to not create a circular printers group.
26#
27# Revision 1.29  2004/01/08 16:24:49  jalet
28# edpykota now supports adding printers to printer groups.
29#
30# Revision 1.28  2004/01/08 14:10:33  jalet
31# Copyright year changed.
32#
33# Revision 1.27  2004/01/06 14:24:59  jalet
34# Printer groups should be cached now, if caching is enabled.
35#
36# Revision 1.26  2003/12/29 14:12:48  uid67467
37# Tries to workaround possible integrity violations when retrieving printer groups
38#
39# Revision 1.25  2003/12/27 16:49:25  uid67467
40# Should be ok now.
41#
42# Revision 1.24  2003/11/29 22:02:14  jalet
43# Don't try to retrieve the user print quota information if current printer
44# doesn't exist.
45#
46# Revision 1.23  2003/11/23 19:01:37  jalet
47# Job price added to history
48#
49# Revision 1.22  2003/11/21 14:28:46  jalet
50# More complete job history.
51#
52# Revision 1.21  2003/11/12 13:06:38  jalet
53# Bug fix wrt no user/group name command line argument to edpykota
54#
55# Revision 1.20  2003/10/09 21:25:26  jalet
56# Multiple printer names or wildcards can be passed on the command line
57# separated with commas.
58# Beta phase.
59#
60# Revision 1.19  2003/10/08 07:01:20  jalet
61# Job history can be disabled.
62# Some typos in README.
63# More messages in setup script.
64#
65# Revision 1.18  2003/10/07 09:07:30  jalet
66# Character encoding added to please latest version of Python
67#
68# Revision 1.17  2003/10/06 13:12:28  jalet
69# More work on caching
70#
71# Revision 1.16  2003/10/03 18:01:49  jalet
72# Nothing interesting...
73#
74# Revision 1.15  2003/10/03 12:27:03  jalet
75# Several optimizations, especially with LDAP backend
76#
77# Revision 1.14  2003/10/03 08:57:55  jalet
78# Caching mechanism now caches all that's cacheable.
79#
80# Revision 1.13  2003/10/02 20:23:18  jalet
81# Storage caching mechanism added.
82#
83# Revision 1.12  2003/08/17 14:20:25  jalet
84# Bug fix by Oleg Biteryakov
85#
86# Revision 1.11  2003/07/29 20:55:17  jalet
87# 1.14 is out !
88#
89# Revision 1.10  2003/07/16 21:53:08  jalet
90# Really big modifications wrt new configuration file's location and content.
91#
92# Revision 1.9  2003/07/14 17:20:15  jalet
93# Bug in postgresql storage when modifying the prices for a printer
94#
95# Revision 1.8  2003/07/14 14:18:17  jalet
96# Wrong documentation strings
97#
98# Revision 1.7  2003/07/09 20:17:07  jalet
99# Email field added to PostgreSQL schema
100#
101# Revision 1.6  2003/07/07 11:49:24  jalet
102# Lots of small fixes with the help of PyChecker
103#
104# Revision 1.5  2003/07/07 08:33:19  jalet
105# Bug fix due to a typo in LDAP code
106#
107# Revision 1.4  2003/06/30 13:54:21  jalet
108# Sorts by user / group name
109#
110# Revision 1.3  2003/06/25 14:10:01  jalet
111# Hey, it may work (edpykota --reset excepted) !
112#
113# Revision 1.2  2003/06/12 21:09:57  jalet
114# wrongly placed code.
115#
116# Revision 1.1  2003/06/10 16:37:54  jalet
117# Deletion of the second user which is not needed anymore.
118# Added a debug configuration field in /etc/pykota.conf
119# All queries can now be sent to the logger in debug mode, this will
120# greatly help improve performance when time for this will come.
121#
122#
123#
124#
125
126from pykota.storage import PyKotaStorageError,BaseStorage,StorageObject,StorageUser,StorageGroup,StoragePrinter,StorageLastJob,StorageUserPQuota,StorageGroupPQuota
127
128try :
129    import pg
130except ImportError :   
131    import sys
132    # TODO : to translate or not to translate ?
133    raise PyKotaStorageError, "This python version (%s) doesn't seem to have the PygreSQL module installed correctly." % sys.version.split()[0]
134
135class Storage(BaseStorage) :
136    def __init__(self, pykotatool, host, dbname, user, passwd) :
137        """Opens the PostgreSQL database connection."""
138        BaseStorage.__init__(self, pykotatool)
139        try :
140            (host, port) = host.split(":")
141            port = int(port)
142        except ValueError :   
143            port = -1         # Use PostgreSQL's default tcp/ip port (5432).
144       
145        try :
146            self.database = pg.connect(host=host, port=port, dbname=dbname, user=user, passwd=passwd)
147        except pg.error, msg :
148            raise PyKotaStorageError, msg
149        else :   
150            self.closed = 0
151            self.tool.logdebug("Database opened (host=%s, port=%s, dbname=%s, user=%s)" % (host, port, dbname, user))
152           
153    def close(self) :   
154        """Closes the database connection."""
155        if not self.closed :
156            self.database.close()
157            self.closed = 1
158            self.tool.logdebug("Database closed.")
159       
160    def beginTransaction(self) :   
161        """Starts a transaction."""
162        self.database.query("BEGIN;")
163        self.tool.logdebug("Transaction begins...")
164       
165    def commitTransaction(self) :   
166        """Commits a transaction."""
167        self.database.query("COMMIT;")
168        self.tool.logdebug("Transaction committed.")
169       
170    def rollbackTransaction(self) :     
171        """Rollbacks a transaction."""
172        self.database.query("ROLLBACK;")
173        self.tool.logdebug("Transaction aborted.")
174       
175    def doSearch(self, query) :
176        """Does a search query."""
177        query = query.strip()   
178        if not query.endswith(';') :   
179            query += ';'
180        try :
181            self.tool.logdebug("QUERY : %s" % query)
182            result = self.database.query(query)
183        except pg.error, msg :   
184            raise PyKotaStorageError, msg
185        else :   
186            if (result is not None) and (result.ntuples() > 0) : 
187                return result.dictresult()
188           
189    def doModify(self, query) :
190        """Does a (possibly multiple) modify query."""
191        query = query.strip()   
192        if not query.endswith(';') :   
193            query += ';'
194        try :
195            self.tool.logdebug("QUERY : %s" % query)
196            result = self.database.query(query)
197        except pg.error, msg :   
198            raise PyKotaStorageError, msg
199        else :   
200            return result
201           
202    def doQuote(self, field) :
203        """Quotes a field for use as a string in SQL queries."""
204        if type(field) == type(0.0) : 
205            typ = "decimal"
206        elif type(field) == type(0) :   
207            typ = "int"
208        else :   
209            typ = "text"
210        return pg._quote(field, typ)
211       
212    def getAllUsersNames(self) :   
213        """Extracts all user names."""
214        usernames = []
215        result = self.doSearch("SELECT username FROM users;")
216        if result :
217            usernames = [record["username"] for record in result]
218        return usernames
219       
220    def getAllGroupsNames(self) :   
221        """Extracts all group names."""
222        groupnames = []
223        result = self.doSearch("SELECT groupname FROM groups;")
224        if result :
225            groupnames = [record["groupname"] for record in result]
226        return groupnames
227       
228    def getUserFromBackend(self, username) :   
229        """Extracts user information given its name."""
230        user = StorageUser(self, username)
231        result = self.doSearch("SELECT * FROM users WHERE username=%s LIMIT 1" % self.doQuote(username))
232        if result :
233            fields = result[0]
234            user.ident = fields.get("id")
235            user.LimitBy = fields.get("limitby")
236            user.AccountBalance = fields.get("balance")
237            user.LifeTimePaid = fields.get("lifetimepaid")
238            user.Email = fields.get("email")
239            user.Exists = 1
240        return user
241       
242    def getGroupFromBackend(self, groupname) :   
243        """Extracts group information given its name."""
244        group = StorageGroup(self, groupname)
245        result = self.doSearch("SELECT * FROM groups WHERE groupname=%s LIMIT 1" % self.doQuote(groupname))
246        if result :
247            fields = result[0]
248            group.ident = fields.get("id")
249            group.LimitBy = fields.get("limitby")
250            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))
251            if result :
252                fields = result[0]
253                group.AccountBalance = fields.get("balance")
254                group.LifeTimePaid = fields.get("lifetimepaid")
255            group.Exists = 1
256        return group
257       
258    def getPrinterFromBackend(self, printername) :       
259        """Extracts printer information given its name."""
260        printer = StoragePrinter(self, printername)
261        result = self.doSearch("SELECT * FROM printers WHERE printername=%s LIMIT 1" % self.doQuote(printername))
262        if result :
263            fields = result[0]
264            printer.ident = fields.get("id")
265            printer.PricePerJob = fields.get("priceperjob")
266            printer.PricePerPage = fields.get("priceperpage")
267            printer.LastJob = self.getPrinterLastJob(printer)
268            printer.Exists = 1
269        return printer   
270       
271    def getUserPQuotaFromBackend(self, user, printer) :       
272        """Extracts a user print quota."""
273        userpquota = StorageUserPQuota(self, user, printer)
274        if printer.Exists and user.Exists :
275            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)))
276            if result :
277                fields = result[0]
278                userpquota.ident = fields.get("id")
279                userpquota.PageCounter = fields.get("pagecounter")
280                userpquota.LifePageCounter = fields.get("lifepagecounter")
281                userpquota.SoftLimit = fields.get("softlimit")
282                userpquota.HardLimit = fields.get("hardlimit")
283                userpquota.DateLimit = fields.get("datelimit")
284                userpquota.Exists = 1
285        return userpquota
286       
287    def getGroupPQuotaFromBackend(self, group, printer) :       
288        """Extracts a group print quota."""
289        grouppquota = StorageGroupPQuota(self, group, printer)
290        if group.Exists :
291            result = self.doSearch("SELECT id, softlimit, hardlimit, datelimit FROM grouppquota WHERE groupid=%s AND printerid=%s" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
292            if result :
293                fields = result[0]
294                grouppquota.ident = fields.get("id")
295                grouppquota.SoftLimit = fields.get("softlimit")
296                grouppquota.HardLimit = fields.get("hardlimit")
297                grouppquota.DateLimit = fields.get("datelimit")
298                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)))
299                if result :
300                    fields = result[0]
301                    grouppquota.PageCounter = fields.get("pagecounter")
302                    grouppquota.LifePageCounter = fields.get("lifepagecounter")
303                grouppquota.Exists = 1
304        return grouppquota
305       
306    def getPrinterLastJobFromBackend(self, printer) :       
307        """Extracts a printer's last job information."""
308        lastjob = StorageLastJob(self, printer)
309        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))
310        if result :
311            fields = result[0]
312            lastjob.ident = fields.get("id")
313            lastjob.JobId = fields.get("jobid")
314            lastjob.User = self.getUser(fields.get("username"))
315            lastjob.PrinterPageCounter = fields.get("pagecounter")
316            lastjob.JobSize = fields.get("jobsize")
317            lastjob.JobPrice = fields.get("jobprice")
318            lastjob.JobAction = fields.get("action")
319            lastjob.JobFileName = fields.get("filename")
320            lastjob.JobTitle = fields.get("title")
321            lastjob.JobCopies = fields.get("copies")
322            lastjob.JobOptions = fields.get("options")
323            lastjob.JobDate = fields.get("jobdate")
324            lastjob.Exists = 1
325        return lastjob
326           
327    def getGroupMembersFromBackend(self, group) :       
328        """Returns the group's members list."""
329        groupmembers = []
330        result = self.doSearch("SELECT * FROM groupsmembers JOIN users ON groupsmembers.userid=users.id WHERE groupid=%s" % self.doQuote(group.ident))
331        if result :
332            for record in result :
333                user = StorageUser(self, record.get("username"))
334                user.ident = record.get("userid")
335                user.LimitBy = record.get("limitby")
336                user.AccountBalance = record.get("balance")
337                user.LifeTimePaid = record.get("lifetimepaid")
338                user.Email = record.get("email")
339                user.Exists = 1
340                groupmembers.append(user)
341                self.cacheEntry("USERS", user.Name, user)
342        return groupmembers       
343       
344    def getUserGroupsFromBackend(self, user) :       
345        """Returns the user's groups list."""
346        groups = []
347        result = self.doSearch("SELECT groupname FROM groupsmembers JOIN groups ON groupsmembers.groupid=groups.id WHERE userid=%s" % self.doQuote(user.ident))
348        if result :
349            for record in result :
350                groups.append(self.getGroup(record.get("groupname")))
351        return groups       
352       
353    def getParentPrintersFromBackend(self, printer) :   
354        """Get all the printer groups this printer is a member of."""
355        pgroups = []
356        result = self.doSearch("SELECT groupid,printername FROM printergroupsmembers JOIN printers ON groupid=id WHERE printerid=%s;" % self.doQuote(printer.ident))
357        if result :
358            for record in result :
359                if record["groupid"] != printer.ident : # in case of integrity violation
360                    parentprinter = self.getPrinter(record.get("printername"))
361                    if parentprinter.Exists :
362                        pgroups.append(parentprinter)
363        return pgroups
364       
365    def getMatchingPrinters(self, printerpattern) :
366        """Returns the list of all printers for which name matches a certain pattern."""
367        printers = []
368        # We 'could' do a SELECT printername FROM printers WHERE printername LIKE ...
369        # but we don't because other storages semantics may be different, so every
370        # storage should use fnmatch to match patterns and be storage agnostic
371        result = self.doSearch("SELECT * FROM printers")
372        if result :
373            for record in result :
374                if self.tool.matchString(record["printername"], printerpattern.split(",")) :
375                    printer = StoragePrinter(self, record["printername"])
376                    printer.ident = record.get("id")
377                    printer.PricePerJob = record.get("priceperjob")
378                    printer.PricePerPage = record.get("priceperpage")
379                    printer.LastJob = self.getPrinterLastJob(printer)
380                    printer.Exists = 1
381                    printers.append(printer)
382                    self.cacheEntry("PRINTERS", printer.Name, printer)
383        return printers       
384       
385    def getPrinterUsersAndQuotas(self, printer, names=["*"]) :       
386        """Returns the list of users who uses a given printer, along with their quotas."""
387        usersandquotas = []
388        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))
389        if result :
390            for record in result :
391                if self.tool.matchString(record.get("username"), names) :
392                    user = StorageUser(self, record.get("username"))
393                    user.ident = record.get("uid")
394                    user.LimitBy = record.get("limitby")
395                    user.AccountBalance = record.get("balance")
396                    user.LifeTimePaid = record.get("lifetimepaid")
397                    user.Email = record.get("email") 
398                    user.Exists = 1
399                    userpquota = StorageUserPQuota(self, user, printer)
400                    userpquota.ident = record.get("id")
401                    userpquota.PageCounter = record.get("pagecounter")
402                    userpquota.LifePageCounter = record.get("lifepagecounter")
403                    userpquota.SoftLimit = record.get("softlimit")
404                    userpquota.HardLimit = record.get("hardlimit")
405                    userpquota.DateLimit = record.get("datelimit")
406                    userpquota.Exists = 1
407                    usersandquotas.append((user, userpquota))
408                    self.cacheEntry("USERS", user.Name, user)
409                    self.cacheEntry("USERPQUOTAS", "%s@%s" % (user.Name, printer.Name), userpquota)
410        return usersandquotas
411               
412    def getPrinterGroupsAndQuotas(self, printer, names=["*"]) :       
413        """Returns the list of groups which uses a given printer, along with their quotas."""
414        groupsandquotas = []
415        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))
416        if result :
417            for record in result :
418                if self.tool.matchString(record.get("groupname"), names) :
419                    group = self.getGroup(record.get("groupname"))
420                    grouppquota = self.getGroupPQuota(group, printer)
421                    groupsandquotas.append((group, grouppquota))
422        return groupsandquotas
423       
424    def addPrinter(self, printername) :       
425        """Adds a printer to the quota storage, returns it."""
426        self.doModify("INSERT INTO printers (printername) VALUES (%s)" % self.doQuote(printername))
427        return self.getPrinter(printername)
428       
429    def addUser(self, user) :       
430        """Adds a user to the quota storage, returns its id."""
431        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)))
432        return self.getUser(user.Name)
433       
434    def addGroup(self, group) :       
435        """Adds a group to the quota storage, returns its id."""
436        self.doModify("INSERT INTO groups (groupname, limitby) VALUES (%s, %s)" % (self.doQuote(group.Name), self.doQuote(group.LimitBy)))
437        return self.getGroup(group.Name)
438
439    def addUserToGroup(self, user, group) :   
440        """Adds an user to a group."""
441        result = self.doSearch("SELECT COUNT(*) AS mexists FROM groupsmembers WHERE groupid=%s AND userid=%s" % (self.doQuote(group.ident), self.doQuote(user.ident)))
442        try :
443            mexists = int(result[0].get("mexists"))
444        except (IndexError, TypeError) :   
445            mexists = 0
446        if not mexists :   
447            self.doModify("INSERT INTO groupsmembers (groupid, userid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(user.ident)))
448           
449    def addUserPQuota(self, user, printer) :
450        """Initializes a user print quota on a printer."""
451        self.doModify("INSERT INTO userpquota (userid, printerid) VALUES (%s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident)))
452        return self.getUserPQuota(user, printer)
453       
454    def addGroupPQuota(self, group, printer) :
455        """Initializes a group print quota on a printer."""
456        self.doModify("INSERT INTO grouppquota (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
457        return self.getGroupPQuota(group, printer)
458       
459    def writePrinterPrices(self, printer) :   
460        """Write the printer's prices back into the storage."""
461        self.doModify("UPDATE printers SET priceperpage=%s, priceperjob=%s WHERE id=%s" % (self.doQuote(printer.PricePerPage), self.doQuote(printer.PricePerJob), self.doQuote(printer.ident)))
462       
463    def writeUserLimitBy(self, user, limitby) :   
464        """Sets the user's limiting factor."""
465        self.doModify("UPDATE users SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(user.ident)))
466       
467    def writeGroupLimitBy(self, group, limitby) :   
468        """Sets the group's limiting factor."""
469        self.doModify("UPDATE groups SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(group.ident)))
470       
471    def writeUserPQuotaDateLimit(self, userpquota, datelimit) :   
472        """Sets the date limit permanently for a user print quota."""
473        self.doModify("UPDATE userpquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(userpquota.ident)))
474           
475    def writeGroupPQuotaDateLimit(self, grouppquota, datelimit) :   
476        """Sets the date limit permanently for a group print quota."""
477        self.doModify("UPDATE grouppquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(grouppquota.ident)))
478       
479    def writeUserPQuotaPagesCounters(self, userpquota, newpagecounter, newlifepagecounter) :   
480       """Sets the new page counters permanently for a user print quota."""
481       self.doModify("UPDATE userpquota SET pagecounter=%s,lifepagecounter=%s WHERE id=%s" % (self.doQuote(newpagecounter), self.doQuote(newlifepagecounter), self.doQuote(userpquota.ident)))
482       
483    def writeUserAccountBalance(self, user, newbalance, newlifetimepaid=None) :   
484       """Sets the new account balance and eventually new lifetime paid."""
485       if newlifetimepaid is not None :
486           self.doModify("UPDATE users SET balance=%s, lifetimepaid=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(newlifetimepaid), self.doQuote(user.ident)))
487       else :   
488           self.doModify("UPDATE users SET balance=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(user.ident)))
489           
490    def writeLastJobSize(self, lastjob, jobsize, jobprice) :       
491        """Sets the last job's size permanently."""
492        self.doModify("UPDATE jobhistory SET jobsize=%s, jobprice=%s WHERE id=%s" % (self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(lastjob.ident)))
493       
494    def writeJobNew(self, printer, user, jobid, pagecounter, action, jobsize=None, jobprice=None, filename=None, title=None, copies=None, options=None) :   
495        """Adds a job in a printer's history."""
496        if (not self.disablehistory) or (not printer.LastJob.Exists) :
497            if jobsize is not None :
498                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)))
499            else :   
500                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)))
501        else :       
502            # here we explicitly want to reset jobsize to NULL if needed
503            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)))
504           
505    def writeUserPQuotaLimits(self, userpquota, softlimit, hardlimit) :
506        """Sets soft and hard limits for a user quota."""
507        self.doModify("UPDATE userpquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(userpquota.ident)))
508       
509    def writeGroupPQuotaLimits(self, grouppquota, softlimit, hardlimit) :
510        """Sets soft and hard limits for a group quota on a specific printer."""
511        self.doModify("UPDATE grouppquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(grouppquota.ident)))
512
513    def writePrinterToGroup(self, pgroup, printer) :
514        """Puts a printer into a printer group."""
515        children = []
516        result = self.doSearch("SELECT printerid FROM printergroupsmembers WHERE groupid=%s;" % self.doQuote(pgroup.ident))
517        if result :
518            for record in result :
519                children.append(record.get("printerid")) # TODO : put this into the database integrity rules
520        if printer.ident not in children :       
521            self.doModify("INSERT INTO printergroupsmembers (groupid, printerid) VALUES (%s, %s);" % (self.doQuote(pgroup.ident), self.doQuote(printer.ident)))
522       
523    def deleteUser(self, user) :   
524        """Completely deletes an user from the Quota Storage."""
525        # TODO : What should we do if we delete the last person who used a given printer ?
526        # TODO : we can't reassign the last job to the previous one, because next user would be
527        # TODO : incorrectly charged (overcharged).
528        for q in [ 
529                    "DELETE FROM groupsmembers WHERE userid=%s" % self.doQuote(user.ident),
530                    "DELETE FROM jobhistory WHERE userid=%s" % self.doQuote(user.ident),
531                    "DELETE FROM userpquota WHERE userid=%s" % self.doQuote(user.ident),
532                    "DELETE FROM users WHERE id=%s" % self.doQuote(user.ident),
533                  ] :
534            self.doModify(q)
535       
536    def deleteGroup(self, group) :   
537        """Completely deletes a group from the Quota Storage."""
538        for q in [
539                   "DELETE FROM groupsmembers WHERE groupid=%s" % self.doQuote(group.ident),
540                   "DELETE FROM grouppquota WHERE groupid=%s" % self.doQuote(group.ident),
541                   "DELETE FROM groups WHERE id=%s" % self.doQuote(group.ident),
542                 ] : 
543            self.doModify(q)
544       
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