Mercurial > sqlpython
annotate sqlpython/sqlpython.py @ 198:b2d8bf5f89db
merged with changes from work
| author | catherine@Elli.myhome.westell.com |
|---|---|
| date | Tue, 02 Dec 2008 11:00:21 -0500 |
| parents | 3af1615e6ea8 |
| children | 3ca2271847e2 |
| rev | line source |
|---|---|
| 189 | 1 # |
| 2 # SqlPython V1.5.0 | |
| 3 # Author: Luca.Canali@cern.ch, Apr 2006 | |
| 4 # Rev 29-May-08 | |
| 5 # | |
| 6 # A python module to reproduce Oracle's command line 'sqlplus-like' within python | |
| 7 # Intended to allow easy customizations and extentions | |
| 8 # Best used with the companion modules sqlpyPlus and mysqlpy | |
| 9 # See also http://twiki.cern.ch/twiki/bin/view/PSSGroup/SqlPython | |
| 10 | |
| 11 import cmd2,getpass,binascii,cx_Oracle,re,os | |
| 12 import sqlpyPlus | |
| 13 __version__ = '1.5.0' | |
| 14 # complication! separate sessions -> | |
| 15 # separate transactions !!!!! | |
| 16 # also: timeouts, other session failures | |
| 17 | |
| 18 class sqlpython(cmd2.Cmd): | |
| 19 '''A python module to reproduce Oracle's command line with focus on customization and extention''' | |
| 20 | |
| 21 def __init__(self): | |
| 22 cmd2.Cmd.__init__(self) | |
| 23 self.prompt = 'SQL.No_Connection> ' | |
| 24 self.maxfetch = 1000 | |
| 25 self.terminator = ';' | |
| 26 self.timeout = 30 | |
| 27 self.commit_on_exit = True | |
| 28 | |
| 29 connection_modes = {re.compile(' AS SYSDBA', re.IGNORECASE): cx_Oracle.SYSDBA, | |
| 30 re.compile(' AS SYSOPER', re.IGNORECASE): cx_Oracle.SYSOPER} | |
| 31 def do_connect(self, arg): | |
| 32 '''Opens the DB connection''' | |
| 33 modeval = 0 | |
| 34 for modere, modevalue in self.connection_modes.items(): | |
| 35 if modere.search(arg): | |
| 36 arg = modere.sub('', arg) | |
| 37 modeval = modevalue | |
| 38 try: | |
| 39 orauser, oraserv = arg.split('@') | |
| 40 except ValueError: | |
| 41 try: | |
| 42 oraserv = os.environ['ORACLE_SID'] | |
| 43 except KeyError: | |
| 44 print 'instance not specified and environment variable ORACLE_SID not set' | |
| 45 return | |
| 46 orauser = arg | |
| 47 sid = oraserv | |
| 48 try: | |
| 49 host, sid = oraserv.split('/') | |
| 50 try: | |
| 51 host, port = host.split(':') | |
| 52 port = int(port) | |
| 53 except ValueError: | |
| 54 port = 1521 | |
| 55 oraserv = cx_Oracle.makedsn(host, port, sid) | |
| 56 except ValueError: | |
| 57 pass | |
| 58 try: | |
| 59 orauser, orapass = orauser.split('/') | |
| 60 except ValueError: | |
| 61 orapass = getpass.getpass('Password: ') | |
| 62 if orauser.upper() == 'SYS' and not modeval: | |
| 63 print 'Privilege not specified for SYS, assuming SYSOPER' | |
| 64 modeval = cx_Oracle.SYSOPER | |
| 65 try: | |
| 66 self.orcl = cx_Oracle.connect(orauser,orapass,oraserv,modeval) | |
| 67 self.curs = self.orcl.cursor() | |
| 68 self.prompt = '%s@%s> ' % (orauser, sid) | |
| 69 except Exception, e: | |
| 70 print e | |
| 71 | |
| 72 | |
| 73 def emptyline(self): | |
| 74 pass | |
| 75 | |
| 76 def do_terminators(self, arg): | |
| 77 """; standard Oracle format | |
| 78 \\c CSV (with headings) | |
| 79 \\C CSV (no headings) | |
| 80 \\g list | |
| 81 \\G aligned list | |
| 82 \\h HTML table | |
| 83 \\i INSERT statements | |
| 84 \\s CSV (with headings) | |
| 85 \\S CSV (no headings) | |
| 86 \\t transposed | |
| 87 \\x XML | |
| 88 \\l line plot, with markers | |
| 89 \\L scatter plot (no lines) | |
| 90 \\b bar graph | |
| 91 \\p pie chart""" | |
| 92 print self.do_terminators.__doc__ | |
| 93 | |
| 94 terminatorSearchString = '|'.join('\\' + d.split()[0] for d in do_terminators.__doc__.splitlines()) | |
| 95 | |
| 96 def default(self, arg): | |
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97 self.varsUsed = sqlpyPlus.findBinds(arg, self.binds, givenBindVars={}) |
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98 self.curs.execute('%s %s' % (arg.parsed.command, arg.parsed.args), self.varsUsed) |
| 189 | 99 print '\nExecuted%s\n' % ((self.curs.rowcount > 0) and ' (%d rows)' % self.curs.rowcount or '') |
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100 |
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101 def do_commit(self, arg=''): |
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102 self.default(self.parsed('commit %s;' % (arg))) |
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103 def do_rollback(self, arg=''): |
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104 self.default(self.parsed('rollback %s;' % (arg))) |
| 189 | 105 def do_quit(self, arg): |
| 106 if self.commit_on_exit and hasattr(self, 'curs'): | |
| 197 | 107 self.default(self.parsed('commit')) |
| 189 | 108 return cmd2.Cmd.do_quit(self, None) |
| 109 do_exit = do_quit | |
| 110 do_q = do_quit | |
| 111 | |
| 112 def pmatrix(rows,desc,maxlen=30): | |
| 113 '''prints a matrix, used by sqlpython to print queries' result sets''' | |
| 114 names = [] | |
| 115 maxen = [] | |
| 116 toprint = [] | |
| 117 for d in desc: | |
| 118 n = d[0] | |
| 119 names.append(n) # list col names | |
| 120 maxen.append(len(n)) # col length | |
| 121 rcols = range(len(desc)) | |
| 122 rrows = range(len(rows)) | |
| 123 for i in rrows: # loops for all rows | |
| 124 rowsi = map(str, rows[i]) # current row to process | |
| 125 split = [] # service var is row split is needed | |
| 126 mustsplit = 0 # flag | |
| 127 for j in rcols: | |
| 128 if str(desc[j][1]) == "<type 'cx_Oracle.BINARY'>": # handles RAW columns | |
| 129 rowsi[j] = binascii.b2a_hex(rowsi[j]) | |
| 130 maxen[j] = max(maxen[j], len(rowsi[j])) # computes max field length | |
| 131 if maxen[j] <= maxlen: | |
| 132 split.append('') | |
| 133 else: # split the line is 2 because field is too long | |
| 134 mustsplit = 1 | |
| 135 maxen[j] = maxlen | |
| 136 split.append(rowsi[j][maxlen-1:2*maxlen-1]) | |
| 137 rowsi[j] = rowsi[j][0:maxlen-1] # this implem. truncates after maxlen*2 | |
| 138 toprint.append(rowsi) # 'toprint' is a printable copy of rows | |
| 139 if mustsplit != 0: | |
| 140 toprint.append(split) | |
| 141 sepcols = [] | |
| 142 for i in rcols: | |
| 143 maxcol = maxen[i] | |
| 144 name = names[i] | |
| 145 sepcols.append("-" * maxcol) # formats column names (header) | |
| 146 names[i] = name + (" " * (maxcol-len(name))) # formats separ line with -- | |
| 147 rrows2 = range(len(toprint)) | |
| 148 for j in rrows2: | |
| 149 val = toprint[j][i] | |
| 150 if str(desc[i][1]) == "<type 'cx_Oracle.NUMBER'>": # right align numbers | |
| 151 toprint[j][i] = (" " * (maxcol-len(val))) + val | |
| 152 else: | |
| 153 toprint[j][i] = val + (" " * (maxcol-len(val))) | |
| 154 for j in rrows2: | |
| 155 toprint[j] = ' '.join(toprint[j]) | |
| 156 names = ' '.join(names) | |
| 157 sepcols = ' '.join(sepcols) | |
| 158 toprint.insert(0, sepcols) | |
| 159 toprint.insert(0, names) | |
| 160 return '\n'.join(toprint) | |
| 161 |