Mercurial > hg > ZDBInterface
annotate ZDBInterfaceFolder.py @ 13:cf03ab908a2b
add _ignore_empty option (default=true) to ZSQLInlineSearch.
author | casties |
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date | Thu, 07 Jul 2011 21:04:23 +0200 |
parents | 09882d5a3989 |
children | 9cea47dc6926 |
rev | line source |
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3 | 1 ''' |
2 Created on 14.2.2011 | |
3 | |
4 @author: casties | |
5 ''' | |
6 | |
7 from OFS.Folder import Folder | |
8 from Products.PageTemplates.PageTemplateFile import PageTemplateFile | |
9 from AccessControl import getSecurityManager, Unauthorized | |
10 import logging | |
11 import re | |
12 | |
13 from DBInterface import * | |
14 | |
15 | |
16 class ZDBInterfaceFolder(DBInterface, Folder): | |
17 """Folder for database queries | |
18 """ | |
19 | |
20 meta_type="ZDBInterfaceFolder" | |
21 manage_options=Folder.manage_options+( | |
22 {'label':'Config','action':'manage_editZDBInterfaceFolderForm'}, | |
23 ) | |
24 | |
25 # management templates | |
26 manage_editZDBInterfaceFolderForm=PageTemplateFile('zpt/editZDBInterfaceFolder',globals()) | |
27 | |
28 | |
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29 def __init__(self, id, title, connection_id=None, autocommit=False, default_search='bw'): |
3 | 30 """init""" |
31 self.id = id | |
32 self.title = title | |
33 # database connection id | |
34 self.connection_id = connection_id | |
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35 # set db connection to autocommit |
8 | 36 self.autocommit = autocommit |
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37 # default text search mode |
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38 self.default_search = default_search |
3 | 39 |
13
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40 def getSQLQuery(self, table, argv, ignore_empty=False): |
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41 """returns dict with SQL query string and args. |
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42 ignore_empty: remove fields with empty string values from query.""" |
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43 logging.debug("getSQLquery table=%s argv=%s ignore_empty=%s"%(table,argv,ignore_empty)) |
4 | 44 args = [] |
45 select = "*" | |
46 order = None | |
47 wheres = [] | |
48 whereOp = "AND" | |
8 | 49 processed = {} |
50 unprocessed = {} | |
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51 ignored = {} |
7 | 52 limit = None |
53 offset = None | |
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54 |
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55 def doOp(op, param, val): |
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56 # handles comparison operations in WHERE clause |
7 | 57 logging.debug("doop op=%s param=%s val=%s"%(op,param,val)) |
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58 if ignore_empty and not val: |
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59 # ignore parameter |
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60 logging.debug(" param=%s ignored"%(param)) |
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61 return |
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62 |
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63 if isinstance(val, list): |
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64 # join multiple parameters with spaces (makes sense with checkbox and -op=all) |
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65 val = " ".join(val) |
7 | 66 |
67 # string comparisons are case-insensitive | |
68 if isinstance(val, basestring): | |
69 param = "LOWER(%s)"%param | |
70 val = val.lower() | |
71 | |
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72 if op == "eq": |
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73 wheres.append(param + " = %s") |
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74 args.append(val) |
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75 elif op == "lt": |
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76 wheres.append(param + " < %s") |
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77 args.append(val) |
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78 elif op == "gt": |
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79 wheres.append(param + " > %s") |
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80 args.append(val) |
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81 elif op == "ew": |
7 | 82 wheres.append(param + " ILIKE %s") |
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83 args.append("%" + val) |
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84 elif op == "bw": |
7 | 85 wheres.append(param + " ILIKE %s") |
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86 args.append(val + "%") |
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87 elif op == "ct": |
7 | 88 wheres.append(param + " ILIKE %s") |
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89 args.append("%" + val + "%") |
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90 elif op == "all": |
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91 words = [] |
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92 for word in val.split(" "): |
7 | 93 words.append(param + " ILIKE %s") |
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94 args.append("%" + word + "%") |
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95 wheres.append("(" + " AND ".join(words) + ")") |
7 | 96 elif op == "one": |
97 words = [] | |
98 for word in val.split(" "): | |
99 words.append(param + " ILIKE %s") | |
100 args.append("%" + word + "%") | |
101 wheres.append("(" + " OR ".join(words) + ")") | |
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102 else: |
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103 logging.error("getSQLquery: unknown op=%s!"%op) |
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104 |
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105 return |
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106 |
4 | 107 # evaluate argv |
108 for (key, val) in argv.items(): | |
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109 logging.debug("process key=%s val=%s"%(key,val)) |
8 | 110 if key in processed: |
4 | 111 # parameter has been processed |
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112 logging.debug(" key=%s processed"%(key)) |
4 | 113 continue |
114 | |
115 # beginning of a command should always be "_" | |
116 if key[0] == "-": | |
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117 key = "_" + key[1:] |
4 | 118 |
119 if key == "_select": | |
120 # SELECT expression | |
121 select = sqlName(val, more="*,") | |
122 elif key == "_sort": | |
123 # sort i.e. ORDER BY expression | |
124 order = sqlName(val, more=",") | |
125 elif key == "_lop": | |
126 # logical operation joining WHERE clauses | |
127 whereOp = sqlName(val) | |
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128 elif key == "_max" or key == "_size": |
7 | 129 # number of results |
130 limit = sqlName(val) | |
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131 elif key == "_skip" or key == "_start": |
7 | 132 # start at result number |
133 offset = sqlName(val) | |
4 | 134 elif key[:3] == "_op": |
10 | 135 # operation parameters _op_param=val |
4 | 136 param = sqlName(key[4:]) |
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137 logging.debug("param=%s key=%s val=%s"%(param,key,val)) |
4 | 138 if param in argv: |
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139 doOp(val, param, argv[param]) |
8 | 140 processed[param] = True |
4 | 141 else: |
142 # no corresponding parameter | |
143 logging.error("getSQLquery: param=%s for op not found!"%param) | |
8 | 144 else: |
145 # parameter=value pair | |
146 unprocessed[key] = val | |
4 | 147 |
148 # process remaining parameters (without _op) | |
8 | 149 for (key, val) in unprocessed.items(): |
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150 if key not in processed: |
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151 param = sqlName(key) |
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152 # default operation |
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153 doOp(self.default_search, param, val) |
4 | 154 |
155 # join it all | |
156 query = "SELECT %s FROM %s"%(select, table) | |
157 if wheres: | |
158 query += " WHERE " + (" " + whereOp + " ").join(wheres) | |
159 | |
160 if order: | |
161 query += " ORDER BY " + order | |
7 | 162 |
163 if limit: | |
164 query += " LIMIT " + limit | |
165 | |
166 if offset: | |
167 query += " OFFSET " + offset | |
4 | 168 |
169 return {'query' : query, 'args' : args} | |
170 | |
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171 def ZDBInlineSearch(self, _table=None, _ignore_empty=True, **argv): |
10 | 172 """returns result set from search with given parameters""" |
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173 query = self.getSQLQuery(_table, argv, ignore_empty= _ignore_empty) |
4 | 174 result = self.executeZSQL(query['query'], query['args']) |
175 return result | |
3 | 176 |
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177 def manage_editZDBInterfaceFolder(self, title=None, connection_id=None, autocommit=None, default_search=None, |
3 | 178 REQUEST=None): |
179 """Change the object""" | |
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180 logging.debug("editZDBInterfaceFolder title=%s, connection_id=%s, autocommit=%s default_search=%s"%(title,connection_id,autocommit,default_search)) |
3 | 181 if title is not None: |
182 self.title = title | |
183 | |
184 if connection_id is not None: | |
185 self.connection_id = connection_id | |
186 | |
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187 if default_search is not None: |
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188 self.default_search = default_search |
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189 |
8 | 190 self.autocommit = (autocommit == "on") |
191 | |
3 | 192 #checkPermission=getSecurityManager().checkPermission |
193 REQUEST.RESPONSE.redirect('manage_main') | |
194 | |
195 | |
196 manage_addZDBInterfaceFolderForm=PageTemplateFile('zpt/addZDBInterfaceFolder',globals()) | |
197 | |
198 def manage_addZDBInterfaceFolder(self, id, title='', label='', description='', | |
199 createPublic=0, | |
200 createUserF=0, | |
201 REQUEST=None): | |
202 """Add a new object with id *id*.""" | |
203 | |
204 ob=ZDBInterfaceFolder(str(id),title) | |
205 self._setObject(id, ob) | |
206 | |
207 #checkPermission=getSecurityManager().checkPermission | |
208 REQUEST.RESPONSE.redirect('manage_main') | |
209 | |
210 |