Mercurial > sqlpython
annotate sqlpyPlus.py @ 11:cab368ea3ec8
reworking pull
author | devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil |
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date | Tue, 18 Dec 2007 17:01:15 -0500 |
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0 | 1 """sqlpyPlus - extra features (inspired by Oracle SQL*Plus) for Luca Canali's sqlpython.py |
2 | |
3 Features include: | |
4 - SQL*Plus-style bind variables | |
5 - Query result stored in special bind variable ":_" if one row, one item | |
6 - SQL buffer with list, run, ed, get, etc.; unlike SQL*Plus, buffer stores session's full history | |
7 - @script.sql loads and runs (like SQL*Plus) | |
8 - ! runs operating-system command | |
9 - show and set to control sqlpython parameters | |
10 - SQL*Plus-style describe, spool | |
11 - write sends query result directly to file | |
12 - comments shows table and column comments | |
13 - compare ... to ... graphically compares results of two queries | |
14 - commands are case-insensitive | |
15 | |
16 Use 'help' within sqlpython for details. | |
17 | |
18 Compatible with sqlpython v1.3 | |
19 | |
20 Set bind variables the hard (SQL*Plus) way | |
21 exec :b = 3 | |
22 or with a python-like shorthand | |
23 :b = 3 | |
24 | |
25 - catherinedevlin.blogspot.com May 31, 2006 | |
26 """ | |
27 # note in cmd.cmd about supporting emacs commands? | |
28 | |
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29 descQueries = { |
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30 'TABLE': (""" |
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31 atc.column_name, |
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32 CASE atc.nullable WHEN 'Y' THEN 'NULL' ELSE 'NOT NULL' END "Null?", |
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33 atc.data_type || |
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34 CASE atc.data_type WHEN 'DATE' THEN '' |
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35 ELSE '(' || |
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36 CASE atc.data_type WHEN 'NUMBER' THEN TO_CHAR(atc.data_precision) || |
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37 CASE atc.data_scale WHEN 0 THEN '' |
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38 ELSE ',' || TO_CHAR(atc.data_scale) END |
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39 ELSE TO_CHAR(atc.data_length) END |
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40 END || |
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41 CASE atc.data_type WHEN 'DATE' THEN '' ELSE ')' END |
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42 data_type |
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43 FROM all_tab_columns atc |
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44 WHERE atc.table_name = :object_name |
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45 AND atc.owner = :owner |
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46 ORDER BY atc.column_id;""",), |
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47 'PROCEDURE': (""" |
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48 argument_name, |
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49 data_type, |
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50 in_out, |
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51 default_value |
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52 FROM all_arguments |
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53 WHERE object_name = :object_name |
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54 AND owner = :owner |
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55 AND package_name IS NULL |
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56 AND argument_name IS NOT NULL |
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57 ORDER BY sequence;""",), |
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58 'PackageObjects':(""" |
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59 SELECT DISTINCT object_name |
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60 FROM all_arguments |
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61 WHERE package_name = :package_name |
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62 AND owner = :owner""",), |
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63 'PackageObjArgs':(""" |
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64 object_name, |
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65 argument_name, |
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66 data_type, |
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67 in_out, |
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68 default_value |
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69 FROM all_arguments |
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70 WHERE package_name = :package_name |
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71 AND object_name = :object_name |
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72 AND owner = :owner |
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73 AND argument_name IS NOT NULL |
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74 ORDER BY sequence""",), |
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75 'TRIGGER':(""" |
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76 description |
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77 FROM all_triggers |
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78 WHERE owner = :owner |
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79 AND trigger_name = :object_name |
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80 """, |
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81 """ |
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82 table_owner, |
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83 base_object_type, |
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84 table_name, |
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85 column_name, |
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86 when_clause, |
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87 status, |
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88 action_type, |
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89 crossedition |
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90 FROM all_triggers |
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91 WHERE owner = :owner |
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92 AND trigger_name = :object_name |
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93 \\t |
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94 """, |
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95 ), |
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96 'INDEX':(""" |
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97 index_type, |
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98 table_owner, |
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99 table_name, |
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100 table_type, |
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101 uniqueness, |
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102 compression, |
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103 partitioned, |
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104 temporary, |
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105 generated, |
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106 secondary, |
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107 dropped, |
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108 visibility |
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109 FROM all_indexes |
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110 WHERE owner = :owner |
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111 AND index_name = :object_name |
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112 \\t |
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113 """,) |
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114 } |
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115 descQueries['VIEW'] = descQueries['TABLE'] |
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116 descQueries['FUNCTION'] = descQueries['PROCEDURE'] |
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117 |
0 | 118 queries = { |
119 'resolve': """ | |
120 SELECT object_type, object_name, owner FROM ( | |
121 SELECT object_type, object_name, user owner, 1 priority | |
122 FROM user_objects | |
123 WHERE object_name = :objName | |
124 UNION ALL | |
125 SELECT ao.object_type, ao.object_name, ao.owner, 2 priority | |
126 FROM all_objects ao | |
127 JOIN user_synonyms us ON (us.table_owner = ao.owner AND us.table_name = ao.object_name) | |
128 WHERE us.synonym_name = :objName | |
129 AND ao.object_type != 'SYNONYM' | |
130 UNION ALL | |
131 SELECT ao.object_type, ao.object_name, ao.owner, 3 priority | |
132 FROM all_objects ao | |
133 JOIN all_synonyms asyn ON (asyn.table_owner = ao.owner AND asyn.table_name = ao.object_name) | |
134 WHERE asyn.synonym_name = :objName | |
135 AND ao.object_type != 'SYNONYM' | |
136 AND asyn.owner = 'PUBLIC' | |
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137 UNION ALL |
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138 SELECT 'DIRECTORY' object_type, dir.directory_name, dir.owner, 6 priority |
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139 FROM all_directories dir |
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140 WHERE dir.directory_name = :objName |
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141 UNION ALL |
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142 SELECT 'DATABASE LINK' object_type, db_link, owner, 7 priority |
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143 FROM all_db_links dbl |
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144 WHERE dbl.db_link = :objName |
0 | 145 ) ORDER BY priority ASC""", |
146 'tabComments': """ | |
147 SELECT comments | |
148 FROM all_tab_comments | |
149 WHERE owner = :owner | |
150 AND table_name = :table_name""", | |
151 'colComments': """ | |
152 atc.column_name, | |
153 acc.comments | |
154 FROM all_tab_columns atc | |
155 JOIN all_col_comments acc ON (atc.owner = acc.owner and atc.table_name = acc.table_name and atc.column_name = acc.column_name) | |
156 WHERE atc.table_name = :object_name | |
157 AND atc.owner = :owner | |
158 ORDER BY atc.column_id;""", | |
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159 #thanks to Senora.pm for "refs" |
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160 'refs': """ |
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161 NULL referenced_by, |
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162 c2.table_name references, |
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163 c1.constraint_name constraint |
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164 FROM |
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165 user_constraints c1, |
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166 user_constraints c2 |
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167 WHERE |
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168 c1.table_name = :object_name |
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169 and c1.constraint_type ='R' |
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170 and c1.r_constraint_name = c2.constraint_name |
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171 and c1.r_owner = c2.owner |
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172 and c1.owner = :owner |
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173 UNION |
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174 SELECT c1.table_name referenced_by, |
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175 NULL references, |
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176 c1.constraint_name constraint |
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177 FROM |
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178 user_constraints c1, |
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179 user_constraints c2 |
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180 WHERE |
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181 c2.table_name = :object_name |
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182 and c1.constraint_type ='R' |
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183 and c1.r_constraint_name = c2.constraint_name |
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184 and c1.r_owner = c2.owner |
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185 and c1.owner = :owner |
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186 """ |
0 | 187 } |
188 | |
189 import sys, os, re, sqlpython, cx_Oracle, pyparsing | |
190 | |
191 if float(sys.version[:3]) < 2.3: | |
192 def enumerate(lst): | |
193 return zip(range(len(lst)), lst) | |
194 | |
195 class SoftwareSearcher(object): | |
196 def __init__(self, softwareList, purpose): | |
197 self.softwareList = softwareList | |
198 self.purpose = purpose | |
199 self.software = None | |
200 def invoke(self, *args): | |
201 if not self.software: | |
202 (self.software, self.invokeString) = self.find() | |
203 argTuple = tuple([self.software] + list(args)) | |
204 os.system(self.invokeString % argTuple) | |
205 def find(self): | |
206 if self.purpose == 'text editor': | |
207 software = os.environ.get('EDITOR') | |
208 if software: | |
209 return (software, '%s %s') | |
210 for (n, (software, invokeString)) in enumerate(self.softwareList): | |
211 if os.path.exists(software): | |
212 if n > (len(self.softwareList) * 0.7): | |
213 print """ | |
214 | |
215 Using %s. Note that there are better options available for %s, | |
216 but %s couldn't find a better one in your PATH. | |
217 Feel free to open up %s | |
218 and customize it to find your favorite %s program. | |
219 | |
220 """ % (software, self.purpose, __file__, __file__, self.purpose) | |
221 return (software, invokeString) | |
222 stem = os.path.split(software)[1] | |
223 for p in os.environ['PATH'].split(os.pathsep): | |
224 if os.path.exists(os.sep.join([p, stem])): | |
225 return (stem, invokeString) | |
226 raise (OSError, """Could not find any %s programs. You will need to install one, | |
227 or customize %s to make it aware of yours. | |
228 Looked for these programs: | |
229 %s""" % (self.purpose, __file__, "\n".join([s[0] for s in self.softwareList]))) | |
230 #v2.4: %s""" % (self.purpose, __file__, "\n".join(s[0] for s in self.softwareList))) | |
231 | |
232 softwareLists = { | |
233 'diff/merge': [ | |
234 ('/usr/bin/meld',"%s %s %s"), | |
235 ('/usr/bin/kdiff3',"%s %s %s"), | |
236 (r'C:\Program Files\Araxis\Araxis Merge v6.5\Merge.exe','"%s" %s %s'), | |
237 (r'C:\Program Files\TortoiseSVN\bin\TortoiseMerge.exe', '"%s" /base:"%s" /mine:"%s"'), | |
238 ('FileMerge','%s %s %s'), | |
239 ('kompare','%s %s %s'), | |
240 ('WinMerge','%s %s %s'), | |
241 ('xxdiff','%s %s %s'), | |
242 ('fldiff','%s %s %s'), | |
243 ('gtkdiff','%s %s %s'), | |
244 ('tkdiff','%s %s %s'), | |
245 ('gvimdiff','%s %s %s'), | |
246 ('diff',"%s %s %s"), | |
247 (r'c:\windows\system32\comp.exe',"%s %s %s")], | |
248 'text editor': [ | |
249 ('gedit', '%s %s'), | |
250 ('textpad', '%s %s'), | |
251 ('notepad.exe', '%s %s'), | |
252 ('pico', '%s %s'), | |
253 ('emacs', '%s %s'), | |
254 ('vim', '%s %s'), | |
255 ('vi', '%s %s'), | |
256 ('ed', '%s %s'), | |
257 ('edlin', '%s %s') | |
258 ] | |
259 } | |
260 | |
261 diffMergeSearcher = SoftwareSearcher(softwareLists['diff/merge'],'diff/merge') | |
262 editSearcher = SoftwareSearcher(softwareLists['text editor'], 'text editor') | |
263 editor = os.environ.get('EDITOR') | |
264 if editor: | |
265 editSearcher.find = lambda: (editor, "%s %s") | |
266 | |
267 class CaselessDict(dict): | |
268 """dict with case-insensitive keys. | |
269 | |
270 Posted to ASPN Python Cookbook by Jeff Donner - http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66315""" | |
271 def __init__(self, other=None): | |
272 if other: | |
273 # Doesn't do keyword args | |
274 if isinstance(other, dict): | |
275 for k,v in other.items(): | |
276 dict.__setitem__(self, k.lower(), v) | |
277 else: | |
278 for k,v in other: | |
279 dict.__setitem__(self, k.lower(), v) | |
280 def __getitem__(self, key): | |
281 return dict.__getitem__(self, key.lower()) | |
282 def __setitem__(self, key, value): | |
283 dict.__setitem__(self, key.lower(), value) | |
284 def __contains__(self, key): | |
285 return dict.__contains__(self, key.lower()) | |
286 def has_key(self, key): | |
287 return dict.has_key(self, key.lower()) | |
288 def get(self, key, def_val=None): | |
289 return dict.get(self, key.lower(), def_val) | |
290 def setdefault(self, key, def_val=None): | |
291 return dict.setdefault(self, key.lower(), def_val) | |
292 def update(self, other): | |
293 for k,v in other.items(): | |
294 dict.__setitem__(self, k.lower(), v) | |
295 def fromkeys(self, iterable, value=None): | |
296 d = CaselessDict() | |
297 for k in iterable: | |
298 dict.__setitem__(d, k.lower(), value) | |
299 return d | |
300 def pop(self, key, def_val=None): | |
301 return dict.pop(self, key.lower(), def_val) | |
302 | |
303 class NotSettableError(Exception): | |
304 None | |
305 | |
306 class Parser(object): | |
307 comment_def = "--" + pyparsing.ZeroOrMore(pyparsing.CharsNotIn("\n")) | |
308 def __init__(self, scanner, retainSeparator=True): | |
309 self.scanner = scanner | |
310 self.scanner.ignore(pyparsing.sglQuotedString) | |
311 self.scanner.ignore(pyparsing.dblQuotedString) | |
312 self.scanner.ignore(self.comment_def) | |
313 self.scanner.ignore(pyparsing.cStyleComment) | |
314 self.retainSeparator = retainSeparator | |
315 def separate(self, txt): | |
316 itms = [] | |
317 for (sqlcommand, start, end) in self.scanner.scanString(txt): | |
318 if sqlcommand: | |
319 if type(sqlcommand[0]) == pyparsing.ParseResults: | |
320 if self.retainSeparator: | |
321 itms.append("".join(sqlcommand[0])) | |
322 else: | |
323 itms.append(sqlcommand[0][0]) | |
324 else: | |
325 if sqlcommand[0]: | |
326 itms.append(sqlcommand[0]) | |
327 return itms | |
328 | |
329 pipeSeparator = Parser(pyparsing.SkipTo((pyparsing.Literal('|') ^ pyparsing.StringEnd()), include=True), retainSeparator=False) | |
330 bindScanner = Parser(pyparsing.Literal(':') + pyparsing.Word( pyparsing.alphanums + "_$#" )) | |
331 commandSeparator = Parser(pyparsing.SkipTo((pyparsing.Literal(';') ^ pyparsing.StringEnd()), include=True)) | |
332 | |
333 def findBinds(target, existingBinds, givenBindVars = {}): | |
334 result = givenBindVars | |
335 for finding, startat, endat in bindScanner.scanner.scanString(target): | |
336 varname = finding[1] | |
337 try: | |
338 result[varname] = existingBinds[varname] | |
339 except KeyError: | |
340 if not givenBindVars.has_key(varname): | |
341 print 'Bind variable %s not defined.' % (varname) | |
342 return result | |
343 | |
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344 class HistoryItem(str): |
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345 def __init__(self, instr): |
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346 str.__init__(self, instr) |
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347 self.lowercase = self.lower() |
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348 self.idx = None |
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349 def pr(self): |
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350 print '-------------------------[%d]' % (self.idx) |
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351 print self |
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352 |
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353 class History(list): |
8 | 354 rangeFrom = re.compile(r'^([\d])+\s*\-$') |
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355 def append(self, new): |
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356 new = HistoryItem(new) |
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357 list.append(self, new) |
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358 new.idx = len(self) |
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359 def extend(self, new): |
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360 for n in new: |
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361 self.append(n) |
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362 def get(self, getme): |
8 | 363 try: |
364 getme = int(getme) | |
365 if getme < 0: | |
366 return self[:(-1 * getme)] | |
367 else: | |
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368 return [self[getme-1]] |
8 | 369 except IndexError: |
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370 return [] |
8 | 371 except (ValueError, TypeError): |
372 getme = getme.strip() | |
373 mtch = self.rangeFrom.search(getme) | |
374 if mtch: | |
375 return self[(int(mtch.group(1))-1):] | |
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376 if getme.startswith(r'/') and getme.endswith(r'/'): |
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377 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) |
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378 def isin(hi): |
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379 return finder.search(hi) |
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380 else: |
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381 def isin(hi): |
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382 return (getme.lower() in hi.lowercase) |
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383 return [itm for itm in self if isin(itm)] |
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384 |
0 | 385 class sqlpyPlus(sqlpython.sqlpython): |
386 def __init__(self): | |
387 sqlpython.sqlpython.__init__(self) | |
388 self.binds = CaselessDict() | |
389 self.sqlBuffer = [] | |
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390 self.history = History() |
0 | 391 self.settable = ['maxtselctrows', 'maxfetch', 'autobind', 'failover', 'timeout'] # settables must be lowercase |
392 self.stdoutBeforeSpool = sys.stdout | |
393 self.spoolFile = None | |
394 self.autobind = False | |
395 self.failover = False | |
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396 self.multiline = '''select insert update delete tselect |
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397 create drop alter'''.split() |
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398 self.excludeFromHistory = '''run r list l history hi ed li'''.split() |
0 | 399 |
400 def default(self, arg, do_everywhere=False): | |
401 sqlpython.sqlpython.default(self, arg, do_everywhere) | |
402 self.sqlBuffer.append(self.query) | |
403 | |
404 # overrides cmd's parseline | |
405 shortcuts = {'?': 'help', '@': 'getrun', '!': 'shell', ':': 'setbind', '\\': 'psql'} | |
406 def parseline(self, line): | |
407 """Parse the line into a command name and a string containing | |
408 the arguments. Returns a tuple containing (command, args, line). | |
409 'command' and 'args' may be None if the line couldn't be parsed. | |
410 Overrides cmd.cmd.parseline to accept variety of shortcuts..""" | |
411 line = line.strip() | |
412 if not line: | |
413 return None, None, line | |
414 shortcut = self.shortcuts.get(line[0]) | |
415 if shortcut: | |
416 cmd, arg = shortcut, line[1:].strip() | |
417 else: | |
418 i, n = 0, len(line) | |
419 while i < n and line[i] in self.identchars: i = i+1 | |
420 cmd, arg = line[:i], line[i:].strip() | |
421 if cmd.lower() in ('select', 'sleect', 'insert', 'update', 'delete', 'describe', | |
422 'desc', 'comments') \ | |
423 and not hasattr(self, 'curs'): | |
424 print 'Not connected.' | |
425 return '', '', '' | |
426 return cmd, arg, line | |
427 | |
428 def precmd(self, line): | |
429 """Hook method executed just before the command line is | |
430 interpreted, but after the input prompt is generated and issued. | |
431 Makes commands case-insensitive (but unfortunately does not alter command completion). | |
432 """ | |
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433 |
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434 ''' |
0 | 435 pipedCommands = pipeSeparator.separate(line) |
436 if len(pipedCommands) > 1: | |
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437 pipefilename = 'sqlpython.pipe.tmp' |
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438 for (idx, pipedCommand) in enumerate(pipedCommands[:-1]): |
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439 savestdout = sys.stdout |
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440 f = open(pipefilename,'w') |
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441 sys.stdout = f |
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442 self.precmd(pipedCommand) |
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443 self.onecmd(pipedCommand) |
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444 self.postcmd(False, pipedCommands[0]) |
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445 f.close() |
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446 sys.stdout = savestdout |
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447 f = os.popen('%s < %s' % (pipedCommands[idx+1], pipefilename)) |
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448 f.read() |
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449 |
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450 ''' |
0 | 451 try: |
452 args = line.split(None,1) | |
453 args[0] = args[0].lower() | |
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454 statement = ' '.join(args) |
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455 if args[0] in self.multiline: |
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456 statement = sqlpython.finishStatement(statement) |
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457 return statement |
0 | 458 except Exception: |
459 return line | |
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460 |
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461 def postcmd(self, stop, line): |
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462 """Hook method executed just after a command dispatch is finished.""" |
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463 try: |
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464 command = line.split(None,1)[0].lower() |
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465 if command not in self.excludeFromHistory: |
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466 self.history.append(line) |
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467 finally: |
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468 return stop |
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469 |
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470 def onecmd_plus_hooks(self, line): |
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471 line = self.precmd(line) |
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472 stop = self.onecmd(line) |
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473 stop = self.postcmd(stop, line) |
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474 |
0 | 475 def do_shortcuts(self,arg): |
476 """Lists available first-character shortcuts | |
477 (i.e. '!dir' is equivalent to 'shell dir')""" | |
478 for (scchar, scto) in self.shortcuts.items(): | |
479 print '%s: %s' % (scchar, scto) | |
480 | |
481 | |
482 def colnames(self): | |
483 return [d[0] for d in curs.description] | |
484 | |
485 def sql_format_itm(self, itm, needsquotes): | |
486 if itm is None: | |
487 return 'NULL' | |
488 if needsquotes: | |
489 return "'%s'" % str(itm) | |
490 return str(itm) | |
491 def output_as_insert_statements(self): | |
492 usequotes = [d[1] != cx_Oracle.NUMBER for d in self.curs.description] | |
493 def formatRow(row): | |
494 return ','.join(self.sql_format_itm(itm, useq) | |
495 for (itm, useq) in zip(row, usequotes)) | |
496 result = ['INSERT INTO %s (%s) VALUES (%s);' % | |
497 (self.tblname, ','.join(self.colnames), formatRow(row)) | |
498 for row in self.rows] | |
499 return '\n'.join(result) | |
500 | |
501 def output_row_as_xml(self, row): | |
502 result = [' <%s>\n %s\n </%s>' % | |
503 (colname.lower(), str('' if (itm is None) else itm), colname.lower()) | |
504 for (itm, colname) in zip(row, self.colnames)] | |
505 return '\n'.join(result) | |
506 def output_as_xml(self): | |
507 result = ['<%s>\n%s\n</%s>' % | |
508 (self.tblname, self.output_row_as_xml(row), self.tblname) | |
509 for row in self.rows] | |
510 return '\n'.join(result) | |
511 | |
512 def output_as_html_table(self): | |
513 result = ''.join('<th>%s</th>' % c for c in self.colnames) | |
514 result = [' <tr>\n %s\n </tr>' % result] | |
515 for row in self.rows: | |
516 result.append(' <tr>\n %s\n </tr>' % | |
517 (''.join('<td>%s</td>' % | |
518 str('' if (itm is None) else itm) | |
519 for itm in row))) | |
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520 result = '''<table id="%s"> |
0 | 521 %s |
522 </table>''' % (self.tblname, '\n'.join(result)) | |
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523 return result |
0 | 524 |
525 def output_as_list(self, align): | |
526 result = [] | |
527 colnamelen = max(len(colname) for colname in self.colnames) + 1 | |
528 for (idx, row) in enumerate(self.rows): | |
529 result.append('\n**** Row: %d' % (idx+1)) | |
530 for (itm, colname) in zip(row, self.colnames): | |
531 if align: | |
532 colname = colname.ljust(colnamelen) | |
533 result.append('%s: %s' % (colname, itm)) | |
534 return '\n'.join(result) | |
535 | |
536 tableNameFinder = re.compile(r'from\s+([\w$#_"]+)', re.IGNORECASE | re.MULTILINE | re.DOTALL) | |
537 def output(self, outformat, rowlimit): | |
538 self.tblname = self.tableNameFinder.search(self.curs.statement).group(1) | |
539 self.colnames = [d[0] for d in self.curs.description] | |
540 if outformat == '\\i': | |
541 result = self.output_as_insert_statements() | |
542 elif outformat == '\\x': | |
543 result = self.output_as_xml() | |
544 elif outformat == '\\g': | |
545 result = self.output_as_list(align=False) | |
546 elif outformat == '\\G': | |
547 result = self.output_as_list(align=True) | |
548 elif outformat in ('\\s', '\\S', '\\c', '\\C'): #csv | |
549 result = [] | |
550 if outformat in ('\\s', '\\c'): | |
551 result.append(','.join('"%s"' % colname for colname in self.colnames)) | |
552 for row in self.rows: | |
553 result.append(','.join('"%s"' % ('' if itm is None else itm) for itm in row)) | |
554 result = '\n'.join(result) | |
555 elif outformat == '\\h': | |
556 result = self.output_as_html_table() | |
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557 elif outformat == '\\t': |
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558 rows = [self.colnames] |
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559 rows.extend(list(self.rows)) |
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560 transpr = [[rows[y][x] for y in range(len(rows))]for x in range(len(rows[0]))] # matrix transpose |
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561 newdesc = [['ROW N.'+str(y),10] for y in range(len(rows))] |
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562 for x in range(len(self.curs.description)): |
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563 if str(self.curs.description[x][1]) == "<type 'cx_Oracle.BINARY'>": # handles RAW columns |
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564 rname = transpr[x][0] |
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565 transpr[x] = map(binascii.b2a_hex, transpr[x]) |
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566 transpr[x][0] = rname |
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567 self.debg=transpr |
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568 newdesc[0][0] = 'COLUMN NAME' |
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569 result = '\n' + sqlpython.pmatrix(transpr,newdesc) |
0 | 570 else: |
571 result = sqlpython.pmatrix(self.rows, self.curs.description, self.maxfetch) | |
572 return result | |
573 | |
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574 def do_select(self, arg, bindVarsIn=None, override_terminator=None): |
0 | 575 """Fetch rows from a table. |
576 | |
577 Limit the number of rows retrieved by appending | |
578 an integer after the terminator | |
579 (example: SELECT * FROM mytable;10 ) | |
580 | |
581 Output may be formatted by choosing an alternative terminator | |
582 ("help terminators" for details) | |
583 """ | |
584 bindVarsIn = bindVarsIn or {} | |
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585 self.query = 'select ' + arg |
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586 (self.query, terminator, rowlimit) = sqlpython.findTerminator(self.query) |
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587 if override_terminator: |
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588 terminator = override_terminator |
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589 rowlimit = int(rowlimit or 0) |
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590 try: |
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591 self.varsUsed = findBinds(self.query, self.binds, bindVarsIn) |
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592 self.curs.execute(self.query, self.varsUsed) |
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593 self.rows = self.curs.fetchmany(min(self.maxfetch, (rowlimit or self.maxfetch))) |
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594 self.desc = self.curs.description |
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595 self.rc = self.curs.rowcount |
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596 if self.rc > 0: |
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597 print '\n' + self.output(terminator, rowlimit) |
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598 if self.rc == 0: |
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599 print '\nNo rows Selected.\n' |
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600 elif self.rc == 1: |
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601 print '\n1 row selected.\n' |
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602 if self.autobind: |
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603 self.binds.update(dict(zip([d[0] for d in self.desc], self.rows[0]))) |
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604 elif self.rc < self.maxfetch: |
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605 print '\n%d rows selected.\n' % self.rc |
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606 else: |
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607 print '\nSelected Max Num rows (%d)' % self.rc |
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608 except Exception, e: |
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609 print e |
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610 import traceback |
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611 traceback.print_exc(file=sys.stdout) |
0 | 612 self.sqlBuffer.append(self.query) |
613 | |
614 def showParam(self, param): | |
615 param = param.strip().lower() | |
616 if param in self.settable: | |
617 val = getattr(self, param) | |
618 print '%s: %s' % (param, str(getattr(self, param))) | |
619 | |
620 def do_show(self, arg): | |
621 'Shows value of a (sqlpython, not ORACLE) parameter' | |
622 arg = arg.strip().lower() | |
623 if arg: | |
624 self.showParam(arg) | |
625 else: | |
626 for param in self.settable: | |
627 self.showParam(param) | |
628 | |
629 def cast(self, current, new): | |
630 typ = type(current) | |
631 if typ == bool: | |
632 new = new.lower() | |
633 try: | |
634 if (new=='on') or (new[0] in ('y','t')): | |
635 return True | |
636 return False | |
637 except TypeError: | |
638 None | |
639 try: | |
640 return typ(new) | |
641 except: | |
642 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) | |
643 return current | |
644 | |
645 def do_set(self, arg): | |
646 'Sets a (sqlpython, not ORACLE) parameter' | |
647 try: | |
648 paramName, val = arg.split(None, 1) | |
649 except Exception: | |
650 self.do_show(arg) | |
651 return | |
652 paramName = paramName.lower() | |
653 try: | |
654 current = getattr(self, paramName) | |
655 if callable(current): | |
656 raise NotSettableError | |
657 except (AttributeError, NotSettableError): | |
658 self.fail('set %s' % arg) | |
659 return | |
660 val = self.cast(current, val.strip(';')) | |
661 print paramName, ' - was: ', current | |
662 setattr(self, paramName.lower(), val) | |
663 print 'now: ', val | |
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664 |
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665 def do_pull(self, arg): |
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666 "Displays source code." |
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667 |
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668 object_type, owner, object_name = self.resolve(arg.strip(self.terminator).upper()) |
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669 print "%s %s.%s" % (object_type, owner, object_name) |
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670 print self.curs.callfunc('DBMS_METADATA.GET_DDL', cx_Oracle.CLOB, |
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671 [object_type, object_name, owner]) |
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672 print self.curs.callfunc('DBMS_METADATA.GET_DEPENDENT_DDL', cx_Oracle.CLOB, |
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673 [object_type, object_name, owner]) |
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674 |
0 | 675 def do_describe(self, arg): |
676 "emulates SQL*Plus's DESCRIBE" | |
677 object_type, owner, object_name = self.resolve(arg.strip(self.terminator).upper()) | |
678 print "%s %s.%s" % (object_type, owner, object_name) | |
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679 descQ = descQueries.get(object_type) |
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680 if descQ: |
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681 for q in descQ: |
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682 self.do_select(q,bindVarsIn={'object_name':object_name, 'owner':owner}) |
0 | 683 elif object_type == 'PACKAGE': |
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684 self.curs.execute(descQueries['PackageObjects'][0], {'package_name':object_name, 'owner':owner}) |
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685 packageContents = self.curs.fetchall() |
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686 for (packageObj_name,) in packageContents: |
0 | 687 print packageObj_name |
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688 self.do_select(descQueries['PackageObjArgs'][0],bindVarsIn={'package_name':object_name, 'owner':owner, 'object_name':packageObj_name}) |
0 | 689 do_desc = do_describe |
690 | |
691 def do_comments(self, arg): | |
692 'Prints comments on a table and its columns.' | |
693 object_type, owner, object_name = self.resolve(arg.strip(self.terminator).upper()) | |
694 if object_type: | |
695 self.curs.execute(queries['tabComments'],{'table_name':object_name, 'owner':owner}) | |
696 print "%s %s.%s: %s" % (object_type, owner, object_name, self.curs.fetchone()[0]) | |
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697 self.do_select(queries['colComments'],bindVarsIn={'owner':owner, 'object_name': object_name}) |
0 | 698 |
699 def resolve(self, identifier): | |
700 """Checks (my objects).name, (my synonyms).name, (public synonyms).name | |
701 to resolve a database object's name. """ | |
702 parts = identifier.split('.') | |
703 try: | |
704 if len(parts) == 2: | |
705 owner, object_name = parts | |
706 self.curs.execute('SELECT object_type FROM all_objects WHERE owner = :owner AND object_name = :object_name', | |
707 {'owner': owner, 'object_name': object_name}) | |
708 object_type = self.curs.fetchone()[0] | |
709 elif len(parts) == 1: | |
710 object_name = parts[0] | |
711 self.curs.execute(queries['resolve'], {'objName':object_name}) | |
712 object_type, object_name, owner = self.curs.fetchone() | |
713 except TypeError: | |
714 print 'Could not resolve object %s.' % identifier | |
715 object_type, owner, object_name = '', '', '' | |
716 return object_type, owner, object_name | |
717 | |
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718 def do_resolve(self, arg): |
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719 print self.resolve(arg) |
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720 |
0 | 721 def do_shell(self, arg): |
722 'execute a command as if at the OS prompt.' | |
723 os.system(arg) | |
724 | |
725 def spoolstop(self): | |
726 if self.spoolFile: | |
727 sys.stdout = self.stdoutBeforeSpool | |
728 print 'Finished spooling to ', self.spoolFile.name | |
729 self.spoolFile.close() | |
730 self.spoolFile = None | |
731 | |
732 def do_spool(self, arg): | |
733 """spool [filename] - begins redirecting output to FILENAME.""" | |
734 self.spoolstop() | |
735 arg = arg.strip() | |
736 if not arg: | |
737 arg = 'output.lst' | |
738 if arg.lower() != 'off': | |
739 if '.' not in arg: | |
740 arg = '%s.lst' % arg | |
741 print 'Sending output to %s (until SPOOL OFF received)' % (arg) | |
742 self.spoolFile = open(arg, 'w') | |
743 sys.stdout = self.spoolFile | |
744 | |
745 def write(self, arg, fname): | |
746 originalOut = sys.stdout | |
747 f = open(fname, 'w') | |
748 sys.stdout = f | |
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749 self.onecmd_plus_hooks(arg) |
0 | 750 f.close() |
751 sys.stdout = originalOut | |
752 | |
753 def do_write(self, args): | |
754 'write [filename.extension] query - writes result to a file' | |
755 words = args.split(None, 1) | |
756 if len(words) > 1 and '.' in words[0]: | |
757 fname, command = words | |
758 else: | |
759 fname, command = 'output.txt', args | |
760 self.write(command, fname) | |
761 print 'Results written to %s' % os.path.join(os.getcwd(), fname) | |
762 | |
763 def do_compare(self, args): | |
764 """COMPARE query1 TO query2 - uses external tool to display differences. | |
765 | |
766 Sorting is recommended to avoid false hits.""" | |
767 fnames = [] | |
768 args2 = args.split(' to ') | |
769 for n in range(len(args2)): | |
770 query = args2[n] | |
771 fnames.append('compare%s.txt' % n) | |
772 if query.rstrip()[-1] != self.terminator: | |
773 query = '%s%s' % (query, self.terminator) | |
774 self.write(query, fnames[n]) | |
775 diffMergeSearcher.invoke(fnames[0], fnames[1]) | |
776 | |
777 bufferPosPattern = re.compile('\d+') | |
778 rangeIndicators = ('-',':') | |
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779 |
0 | 780 def do_run(self, arg): |
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781 """run [arg]: re-runs an earlier command |
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782 |
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783 no arg -> run most recent command |
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784 arg is integer -> run one history item, by index |
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785 arg is string -> run most recent command by string search |
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786 arg is /enclosed in forward-slashes/ -> run most recent by regex |
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787 """ |
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788 'run [N]: runs the SQL that was run N commands ago' |
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789 runme = self.last_matching(arg) |
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790 print runme |
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791 self.onecmd_plus_hooks(runme) |
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792 do_r = do_run |
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793 def do_history(self, arg): |
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794 """history [arg]: lists past commands issued |
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795 |
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796 no arg -> list all |
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797 arg is integer -> list one history item, by index |
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798 arg is string -> string search |
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799 arg is /enclosed in forward-slashes/ -> regular expression search |
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800 """ |
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801 if arg: |
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802 history = self.history.get(arg) |
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803 else: |
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804 history = self.history |
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805 for hi in history: |
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806 hi.pr() |
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807 def last_matching(self, arg): |
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808 try: |
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809 if arg: |
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810 return self.history.get(arg)[-1] |
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811 else: |
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812 return self.history[-1] |
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813 except: |
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814 return None |
0 | 815 def do_list(self, arg): |
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816 """list [arg]: lists last command issued |
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817 |
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818 no arg -> list absolute last |
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819 arg is integer -> list one history item, by index |
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820 - arg, arg - (integer) -> list up to or after #arg |
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821 arg is string -> list last command matching string search |
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822 arg is /enclosed in forward-slashes/ -> regular expression search |
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823 """ |
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824 try: |
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825 self.last_matching(arg).pr() |
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826 except: |
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827 pass |
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828 do_hi = do_history |
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829 do_l = do_list |
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830 do_li = do_list |
0 | 831 def load(self, fname): |
832 """Pulls command(s) into sql buffer. Returns number of commands loaded.""" | |
833 try: | |
834 f = open(fname, 'r') | |
835 except IOError, e: | |
836 try: | |
837 f = open('%s.sql' % fname, 'r') | |
838 except: | |
839 print 'Problem opening file %s: \n%s' % (fname, e) | |
840 return 0 | |
841 txt = f.read() | |
842 f.close() | |
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843 result = commandSeparator.separate(txt) |
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844 self.history.extend(result) |
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845 return len(result) |
0 | 846 def do_ed(self, arg): |
847 'ed [N]: brings up SQL from N commands ago in text editor, and puts result in SQL buffer.' | |
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848 fname = 'sqlpython_temp.sql' |
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849 buffer = self.last_matching(arg) |
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850 if not buffer: |
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851 print 'Nothing appropriate in buffer to edit.' |
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852 return |
0 | 853 f = open(fname, 'w') |
854 f.write(buffer) | |
855 f.close() | |
856 editSearcher.invoke(fname) | |
857 self.load(fname) | |
858 do_edit = do_ed | |
859 def do_get(self, fname): | |
860 'Brings SQL commands from a file to the in-memory SQL buffer.' | |
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861 numCommandsLoaded = self.load(fname) |
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862 if numCommandsLoaded: |
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863 self.do_list('%d -' % (len(self.history) - numCommandsLoaded)) |
0 | 864 def do_getrun(self, fname): |
865 'Brings SQL commands from a file to the in-memory SQL buffer, and executes them.' | |
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866 numCommandsLoaded = self.load(fname) * -1 |
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867 if numCommandsLoaded: |
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868 for command in self.history[numCommandsLoaded:]: |
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869 self.onecmd_plus_hooks(command) |
0 | 870 def do_psql(self, arg): |
871 '''Shortcut commands emulating psql's backslash commands. | |
872 | |
873 \c connect | |
874 \d desc | |
875 \e edit | |
876 \g run | |
877 \h help | |
878 \i getrun | |
879 \o spool | |
880 \p list | |
881 \w save | |
882 \? help psql''' | |
883 commands = {} | |
884 for c in self.do_psql.__doc__.splitlines()[2:]: | |
885 (abbrev, command) = c.split(None, 1) | |
886 commands[abbrev[1:]] = command | |
887 words = arg.split(None,1) | |
888 abbrev = words[0] | |
889 try: | |
890 args = words[1] | |
891 except IndexError: | |
892 args = '' | |
893 try: | |
894 self.onecmd('%s %s' % (commands[abbrev], args)) | |
895 self.onecmd('q') | |
896 except KeyError: | |
897 print 'psql command \%s not yet supported.' % abbrev | |
898 def do_save(self, fname): | |
899 'save FILENAME: Saves most recent SQL command to disk.' | |
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900 try: |
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901 f = open(fname, 'w') |
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902 f.write(self.sqlBuffer[-1]) |
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903 f.close() |
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904 except Exception, e: |
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905 print 'Error saving %s: %s' % (fname, str(e)) |
0 | 906 |
907 def do_print(self, arg): | |
908 'print VARNAME: Show current value of bind variable VARNAME.' | |
909 if arg: | |
910 if arg[0] == ':': | |
911 arg = arg[1:] | |
912 try: | |
913 print self.binds[arg] | |
914 except KeyError: | |
915 print 'No bind variable ', arg | |
916 else: | |
917 self.do_setbind('') | |
918 def do_setbind(self, arg): | |
919 args = arg.split(None, 2) | |
920 if len(args) == 0: | |
921 for (var, val) in self.binds.items(): | |
922 print ':%s = %s' % (var, val) | |
923 elif len(args) == 1: | |
924 try: | |
925 print ':%s = %s' % (args[0], self.binds[args[0]]) | |
926 except KeyError, e: | |
927 print noSuchBindMsg % args[0] | |
928 elif len(args) > 2 and args[1] in ('=',':='): | |
929 var, val = args[0], args[2] | |
930 if val[0] == val[-1] == "'" and len(val) > 1: | |
931 val = val[1:-1] | |
932 self.binds[var] = val | |
933 else: | |
934 print 'Could not parse ', args | |
935 def do_exec(self, arg): | |
936 if arg[0] == ':': | |
937 self.do_setbind(arg[1:]) | |
938 else: | |
939 self.default('exec %s' % arg) | |
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940 |
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941 def do_cat(self, arg): |
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942 targets = arg.split() |
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943 for target in targets: |
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944 self.do_select('* from %s' % target) |
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945 |
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946 def do_grep(self, arg): |
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947 """grep PATTERN TABLE - search for term in any of TABLE's fields""" |
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948 targets = arg.split() |
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949 pattern = targets.pop(0) |
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950 for target in targets: |
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951 target = target.rstrip(';') |
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952 sql = [] |
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953 try: |
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954 self.curs.execute('select * from %s where 1=0' % target) |
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955 sql = ' or '.join("%s LIKE '%%%s%%'" % (d[0], pattern) for d in self.curs.description) |
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956 sql = '* FROM %s WHERE %s' % (target, sql) |
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957 self.do_select(sql) |
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958 except Exception, e: |
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959 print e |
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960 import traceback |
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961 traceback.print_exc(file=sys.stdout) |
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962 |
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963 def do_refs(self, arg): |
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964 object_type, owner, object_name = self.resolve(arg.strip(self.terminator).upper()) |
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965 if object_type == 'TABLE': |
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966 self.do_select(queries['refs'],bindVarsIn={'object_name':object_name, 'owner':owner}) |
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967 |
0 | 968 def _test(): |
969 import doctest | |
970 doctest.testmod() | |
971 | |
972 if __name__ == "__main__": | |
973 "Silent return implies that all unit tests succeeded. Use -v to see details." | |
974 _test() |