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comparison commons/core/sql/TableAdaptator.py @ 6:769e306b7933

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author yufei-luo
date Fri, 18 Jan 2013 04:54:14 -0500
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5:ea3082881bf8 6:769e306b7933
1 # Copyright INRA (Institut National de la Recherche Agronomique)
2 # http://www.inra.fr
3 # http://urgi.versailles.inra.fr
4 #
5 # This software is governed by the CeCILL license under French law and
6 # abiding by the rules of distribution of free software. You can use,
7 # modify and/ or redistribute the software under the terms of the CeCILL
8 # license as circulated by CEA, CNRS and INRIA at the following URL
9 # "http://www.cecill.info".
10 #
11 # As a counterpart to the access to the source code and rights to copy,
12 # modify and redistribute granted by the license, users are provided only
13 # with a limited warranty and the software's author, the holder of the
14 # economic rights, and the successive licensors have only limited
15 # liability.
16 #
17 # In this respect, the user's attention is drawn to the risks associated
18 # with loading, using, modifying and/or developing or reproducing the
19 # software by the user in light of its specific status of free software,
20 # that may mean that it is complicated to manipulate, and that also
21 # therefore means that it is reserved for developers and experienced
22 # professionals having in-depth computer knowledge. Users are therefore
23 # encouraged to load and test the software's suitability as regards their
24 # requirements in conditions enabling the security of their systems and/or
25 # data to be ensured and, more generally, to use and operate it in the
26 # same conditions as regards security.
27 #
28 # The fact that you are presently reading this means that you have had
29 # knowledge of the CeCILL license and that you accept its terms.
30
31
32 ## Abstract class, Ancestor of Table*Adaptator
33 #
34 class TableAdaptator( object ):
35
36 ## Constructor
37 #
38 # @param iDb DbMySql instance
39 # @param table str table name
40 #
41 def __init__( self, iDb = None, table = "" ):
42 self._iDb = iDb
43 self._table = table
44
45 ## Set connector to database
46 #
47 # @param iDb database instance
48 #
49 def setDbConnector( self, iDb ):
50 self._iDb = iDb
51
52 ## Set table
53 #
54 # @param table string table name
55 #
56 def setTable( self, table ):
57 self._table = table
58
59 ## Return the table name
60 #
61 def getTable( self ):
62 return self._table
63
64 ## Return the number of rows in the table
65 #
66 def getSize( self ):
67 return self._iDb.getSize( self._table )
68
69 ## Test if table is empty
70 #
71 def isEmpty( self ):
72 return self._iDb.isEmpty( self._table )
73
74 ## Insert an instance of Map or Set or Match or Path or Seq instances
75 #
76 # @param obj a Map or Set or Match or Path or Seq instance
77 # @param delayed boolean
78 #
79 def insert(self, obj, delayed = False):
80 if obj.isEmpty():
81 return
82 self._escapeAntislash(obj)
83 sql_cmd = self._genSqlCmdForInsert(obj, delayed)
84 self._iDb.execute(sql_cmd)
85
86 ## Insert a list of Map or Set or Match or Path instances
87 #
88 # @param l a list of object instances
89 # @param delayed boolean
90 #
91 def insertList(self, l, delayed = False):
92 for i in l:
93 self.insert(i, delayed)
94
95 ## Give the data contained in the table as a list of coord object instances
96 #
97 # @return lObject list of coord object instances
98 #
99 def getListOfAllCoordObject( self ):
100 sqlCmd = "SELECT * FROM %s" % ( self._table )
101 lObjs = self._iDb.getObjectListWithSQLCmd( sqlCmd, self._getInstanceToAdapt )
102 return lObjs
103
104 ## Generate sql command for GetListOverlappingCoord method
105 #
106 # @param obj Map, Set or Match instance
107 # @param delayed boolean
108 # @return sqlCmd string generated sql command
109 #
110 def _genSqlCmdForInsert(self, obj, delayed):
111 sqlCmd = 'INSERT '
112 if delayed :
113 sqlCmd += ' DELAYED '
114 type2Insert, attr2Insert = self._getTypeAndAttr2Insert(obj)
115 sqlCmd += 'INTO %s VALUES (' % (self._table)
116 sqlCmd += ",".join(type2Insert)
117 sqlCmd += ")"
118 sqlCmd = sqlCmd % attr2Insert
119 return sqlCmd
120
121 def _getTypeAndAttr2Insert(self, obj):
122 pass
123
124 def _getInstanceToAdapt(self):
125 pass
126
127 def _escapeAntislash(self, obj):
128 pass