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31
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1
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2 from CGData import CGObjectBase
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3
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4 import csv
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5 import types
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6
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7 class TableRow(object):
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8 def __init__(self):
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9 pass
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10
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11 def __str__(self):
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12 return "<" + ",".join( "%s=%s" % (col, getattr(self,col)) for col in self.__format__['columnOrder']) + ">"
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13
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14 class InvalidFormat(Exception):
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15 def __init__(self, txt):
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16 Exception.__init__(self, txt)
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17
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18 class BaseTable(CGObjectBase):
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19 def __init__(self):
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20 super(BaseTable,self).__init__()
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21 self.__row_class__ = type( "TableRow_" + self['cgformat']['name'], (TableRow,), dict(__format__=self.__format__) )
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22 self.free()
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23
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24 def free(self):
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25 self.firstKey = None
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26 self.secondKey = None
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27 self.groupKey = None
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28 self.loaded = False
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29 if 'primaryKey' in self['cgformat']:
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30 self.firstKey = self['cgformat']['primaryKey']
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31 setattr(self, self['cgformat']['primaryKey'] + "_map", {} )
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32 self.groupKey = False
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33
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34 #setup the map for groupKeys
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35 if 'groupKey' in self['cgformat']:
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36 self.firstKey = self['cgformat']['groupKey']
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37 setattr(self, self['cgformat']['groupKey'] + "_map", {} )
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38 self.groupKey = True
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39
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40 if 'secondaryKey' in self['cgformat']:
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41 self.secondKey = self['cgformat']['secondaryKey']
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42
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43 def read(self, handle):
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44 cols = self['cgformat']['columnOrder']
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45 colType = {}
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46 for col in cols:
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47 if 'columnDef' in self['cgformat'] and col in self['cgformat']['columnDef'] and 'type' in self['cgformat']['columnDef'][col]:
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48 if self['cgformat']['columnDef'][col]['type'] == 'float':
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49 colType[col] = float
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50 elif self['cgformat']['columnDef'][col]['type'] == 'int':
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51 colType[col] = int
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52 else:
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53 colType[col] = str
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54 else:
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55 colType[col] = str
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56
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57 read = csv.reader(handle, delimiter="\t")
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58
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59 storeMap = getattr(self, self.firstKey + "_map")
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60 comment = None
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61 if 'comment' in self['cgformat']:
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62 comment = self['cgformat']['comment']
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63 linenum = 0
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64 for row in read:
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65 linenum += 1
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66 r = self.__row_class__()
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67 if comment is None or not row[0].startswith(comment):
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68 for i, col in enumerate(cols):
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69 isOptional = False
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70 if 'columnDef' in self['cgformat'] and col in self['cgformat']['columnDef'] and 'optional' in self['cgformat']['columnDef'][col]:
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71 isOptional = self['cgformat']['columnDef'][col]['optional']
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72 if len(row) > i:
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73 try:
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74 setattr(r, col, colType[col](row[i]))
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75 except ValueError:
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76 raise ValueError( "col invalid type %s on line %d" % (row[i], linenum))
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77 else:
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78 if isOptional:
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79 setattr(r, col, None)
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80 else:
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81 print row
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82 raise InvalidFormat("missing colum " + col)
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83
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84 if not self.groupKey:
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85 if self.secondKey is not None:
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86 key1 = getattr(r, self.firstKey )
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87 key2 = getattr(r, self.secondKey )
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88 if key1 not in storeMap:
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89 storeMap[key1] = {}
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90 storeMap[key1][key2] = r
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91 else:
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92 storeMap[ getattr(r, self.firstKey ) ] = r
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93 else:
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94 key1 = getattr(r, self.firstKey )
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95 if self.secondKey is not None:
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96 key2 = getattr(r, self.secondKey )
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97 if key1 not in storeMap:
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98 storeMap[key1] = {}
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99 if key2 not in storeMap[key1]:
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100 storeMap[key1][key2] = []
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101 storeMap[key1][key2].append(r)
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102 else:
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103 if key1 not in storeMap:
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104 storeMap[key1] = []
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105 storeMap[key1].append(r)
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106 self.loaded = True
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107
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108 """
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109 def __getattr__(self, item):
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110 if not self.loaded:
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111 self.load()
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112
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113 if item == "get_" + self.firstKey + "_list":
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114 return self.__get_firstmap__().keys
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115 if item == "get_by_" + self.firstKey:
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116 return self.__get_firstmap__().__getitem__
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117 if item == "get_" + self.firstKey + "_values":
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118 return self.__get_firstmap__().values
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119 if item == "get_" + self.firstKey + "_map":
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120 return self.__get_firstmap__
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121 if item == "has_" + self.firstKey:
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122 return self.__get_firstmap__().__contains__
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123 raise AttributeError(item)
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124 """
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125
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126 def get_key_list(self):
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127 """
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128 List keys
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129 """
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130 if not self.loaded:
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131 self.load()
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132 return self.__get_firstmap__().keys()
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133
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134 def get_by(self, key):
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135 """
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136 get by key
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137 """
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138 if not self.loaded:
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139 self.load()
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140 return self.__get_firstmap__().__getitem__(key)
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141
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142 def get_values(self):
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143 """
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144 get values
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145 """
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146 if not self.loaded:
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147 self.load()
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148 return self.__get_firstmap__().values()
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149
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150 def get_map(self):
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151 """
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152 get key map
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153 """
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154 if not self.loaded:
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155 self.load()
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156 return self.__get_firstmap__()
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157
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158 def has_key(self, key):
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159 """
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160 Does the table have a key
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161 """
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162 if not self.loaded:
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163 self.load()
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164 return self.__get_firstmap__().__contains__(key)
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165 def __get_firstmap__(self):
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166 return getattr(self, self.firstKey + "_map")
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167
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168 def init_blank(self):
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169 self.free()
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170 self['cgdata'] = { 'type' : self['cgformat']['name'] }
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171 self.loaded = True
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172
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173 def insert(self, name, vals):
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174 storeMap = getattr(self, self.firstKey + "_map")
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175 cols = self['cgformat']['columnOrder']
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176 r = self.__row_class__()
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177 for col in cols:
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178 isOptional = False
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179 if 'columnDef' in self['cgformat'] and col in self['cgformat']['columnDef'] and 'optional' in self['cgformat']['columnDef'][col]:
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180 isOptional = self['cgformat']['columnDef'][col]['optional']
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181 if col in vals:
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182 setattr(r, col, vals[col])
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183 else:
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184 if isOptional:
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185 setattr(r, col, None)
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186 else:
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187 raise InvalidFormat("missing colum " + col)
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188
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189 if not self.groupKey:
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190 if self.secondKey is not None:
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191 key1 = getattr(r, self.firstKey )
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192 key2 = getattr(r, self.secondKey )
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193 if key1 not in storeMap:
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194 storeMap[key1] = {}
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195 storeMap[key1][key2] = r
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196 else:
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197 storeMap[ getattr(r, self.firstKey ) ] = r
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198 else:
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199 key1 = getattr(r, self.firstKey )
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200 if self.secondKey is not None:
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201 key2 = getattr(r, self.secondKey )
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202 if key1 not in storeMap:
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203 storeMap[key1] = {}
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204 if key2 not in storeMap[key1]:
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205 storeMap[key1][key2] = []
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206 storeMap[key1][key2].append(r)
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207 else:
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208 if key1 not in storeMap:
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209 storeMap[key1] = []
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210 storeMap[key1].append(r)
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211
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212 def write(self, handle):
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213 writer = csv.writer(handle, delimiter="\t", lineterminator="\n")
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214 for row in self.row_iter():
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215 orow = []
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216 for col in self['cgformat']['columnOrder']:
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217 orow.append( getattr(row, col) )
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218 writer.writerow(orow)
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219
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220
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221 def row_iter(self):
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222 if not self.groupKey:
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223 keyMap = getattr(self, self.firstKey + "_map")
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224 for rowKey in keyMap:
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225 yield keyMap[rowKey]
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226 else:
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227 keyMap = getattr(self, self.firstKey + "_map")
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228 for rowKey in keyMap:
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229 for elem in keyMap[rowKey]:
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230 yield elem
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231
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232 def __get_firstmap__(self):
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233 return getattr(self, self.firstKey + "_map")
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