Mercurial > hg > ZDBInterface

annotate ZDBInterfaceFolder.py @ 5:ca30cf0e810d

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fix bugs in ZDBInlineSearch.
author root@xserve09.mpiwg-berlin.mpg.de
date Tue, 15 Feb 2011 20:39:48 +0100
parents 0ade331198de
children 917e28a08c58
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1 '''
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2 Created on 14.2.2011
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3
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4 @author: casties
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5 '''
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6
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7 from OFS.Folder import Folder
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8 from Products.PageTemplates.PageTemplateFile import PageTemplateFile
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9 from AccessControl import getSecurityManager, Unauthorized
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10 import logging
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11 import re
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12
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13 from DBInterface import *
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14
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15
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16 class ZDBInterfaceFolder(DBInterface, Folder):
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17 """Folder for database queries
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18 """
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19
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20 meta_type="ZDBInterfaceFolder"
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21 manage_options=Folder.manage_options+(
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22 {'label':'Config','action':'manage_editZDBInterfaceFolderForm'},
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23 )
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24
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25 # management templates
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26 manage_editZDBInterfaceFolderForm=PageTemplateFile('zpt/editZDBInterfaceFolder',globals())
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27
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28
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29 def __init__(self, id, title, connection_id=None):
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30 """init"""
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31 self.id = id
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32 self.title = title
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33 # database connection id
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34 self.connection_id = connection_id
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35
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36
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37 def getSQLQuery(self, table, argv):
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38 """returns dict with SQL query string and args"""
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39 logging.debug("getSQLquery table=%s argv=%s"%(table,argv))
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40 args = []
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41 select = "*"
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42 order = None
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43 wheres = []
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44 whereOp = "AND"
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45 done = {}
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46
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47 def doOp(op, param, val):
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48 # handles comparison operations in WHERE clause
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49 if isinstance(val, list):
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50 # join multiple parameters with spaces (makes sense with checkbox and -op=all)
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51 val = " ".join(val)
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52 logging.debug("doop op=%s param=%s val=%s"%(op,param,val))
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53 if op == "eq":
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54 wheres.append(param + " = %s")
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55 args.append(val)
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56 elif op == "lt":
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57 wheres.append(param + " < %s")
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58 args.append(val)
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59 elif op == "gt":
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60 wheres.append(param + " > %s")
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61 args.append(val)
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62 elif op == "bw":
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63 wheres.append(param + " LIKE %s")
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64 args.append("%" + val)
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65 elif op == "ew":
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66 wheres.append(param + " LIKE %s")
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67 args.append(val + "%")
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68 elif op == "ct":
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69 wheres.append(param + " LIKE %s")
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70 args.append("%" + val + "%")
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71 elif op == "all":
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72 words = []
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73 for word in val.split(" "):
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74 words.append(param + " LIKE %s")
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75 args.append("%" + word + "%")
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76 wheres.append("(" + " AND ".join(words) + ")")
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77 else:
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78 logging.error("getSQLquery: unknown op=%s!"%op)
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79
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80 return
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81
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82 # evaluate argv
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83 for (key, val) in argv.items():
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84 if key in done:
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85 # parameter has been processed
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86 continue
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87
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88 # beginning of a command should always be "_"
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89 if key[0] == "-":
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90 key = "_" + key[1:]
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91
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92 if key == "_select":
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93 # SELECT expression
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94 select = sqlName(val, more="*,")
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95 elif key == "_sort":
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96 # sort i.e. ORDER BY expression
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97 order = sqlName(val, more=",")
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98 elif key == "_lop":
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99 # logical operation joining WHERE clauses
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100 whereOp = sqlName(val)
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101 elif key[:3] == "_op":
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102 # operation parameters _op_param=option
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103 param = sqlName(key[4:])
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104 logging.debug("param=%s key=%s val=%s"%(param,key,val))
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105 if param in argv:
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106 doOp(val, param, argv[param])
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107 done[param] = True
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108 else:
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109 # no corresponding parameter
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110 logging.error("getSQLquery: param=%s for op not found!"%param)
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111
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112 # process remaining parameters (without _op)
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113 for (key, val) in argv.items():
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114 if key not in done and key[0] not in ("_", "-"):
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115 param = sqlName(key)
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116 # default is begins-with
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117 doOp("bw", param, val)
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118
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119 # join it all
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120 query = "SELECT %s FROM %s"%(select, table)
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121 if wheres:
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122 query += " WHERE " + (" " + whereOp + " ").join(wheres)
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123
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124 if order:
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125 query += " ORDER BY " + order
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126
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127 return {'query' : query, 'args' : args}
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128
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129 def ZDBInlineSearch(self, _table=None, **argv):
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130 """returns result set from search"""
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131 query = self.getSQLQuery(_table, argv)
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132 result = self.executeZSQL(query['query'], query['args'])
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133 return result
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135 def manage_editZDBInterfaceFolder(self, title=None, connection_id=None,
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136 REQUEST=None):
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137 """Change the object"""
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138 if title is not None:
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139 self.title = title
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140
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141 if connection_id is not None:
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142 self.connection_id = connection_id
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143
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144 #checkPermission=getSecurityManager().checkPermission
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145 REQUEST.RESPONSE.redirect('manage_main')
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146
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147
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148 manage_addZDBInterfaceFolderForm=PageTemplateFile('zpt/addZDBInterfaceFolder',globals())
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149
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150 def manage_addZDBInterfaceFolder(self, id, title='', label='', description='',
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151 createPublic=0,
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152 createUserF=0,
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153 REQUEST=None):
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154 """Add a new object with id *id*."""
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155
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156 ob=ZDBInterfaceFolder(str(id),title)
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157 self._setObject(id, ob)
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158
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159 #checkPermission=getSecurityManager().checkPermission
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160 REQUEST.RESPONSE.redirect('manage_main')
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161
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162