Total Complexity | 176 |
Total Lines | 1271 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like PostgreSQL94Platform often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use PostgreSQL94Platform, and based on these observations, apply Extract Interface, too.
1 | <?php |
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38 | class PostgreSQL94Platform extends AbstractPlatform |
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39 | { |
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40 | /** @var bool */ |
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41 | private $useBooleanTrueFalseStrings = true; |
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42 | |||
43 | /** @var string[][] PostgreSQL booleans literals */ |
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44 | private $booleanLiterals = [ |
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45 | 'true' => [ |
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46 | 't', |
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47 | 'true', |
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48 | 'y', |
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49 | 'yes', |
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50 | 'on', |
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51 | '1', |
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52 | ], |
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53 | 'false' => [ |
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54 | 'f', |
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55 | 'false', |
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56 | 'n', |
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57 | 'no', |
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58 | 'off', |
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59 | '0', |
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60 | ], |
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61 | ]; |
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62 | |||
63 | /** |
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64 | * PostgreSQL has different behavior with some drivers |
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65 | * with regard to how booleans have to be handled. |
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66 | * |
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67 | * Enables use of 'true'/'false' or otherwise 1 and 0 instead. |
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68 | * |
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69 | * @param bool $flag |
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70 | */ |
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71 | public function setUseBooleanTrueFalseStrings($flag) |
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72 | { |
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73 | $this->useBooleanTrueFalseStrings = (bool) $flag; |
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74 | } |
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75 | |||
76 | /** |
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77 | * {@inheritDoc} |
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78 | */ |
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79 | public function getSubstringExpression($value, $from, $length = null) |
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80 | { |
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81 | if ($length === null) { |
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82 | return 'SUBSTRING(' . $value . ' FROM ' . $from . ')'; |
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83 | } |
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84 | |||
85 | return 'SUBSTRING(' . $value . ' FROM ' . $from . ' FOR ' . $length . ')'; |
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86 | } |
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87 | |||
88 | /** |
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89 | * {@inheritDoc} |
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90 | */ |
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91 | public function getNowExpression() |
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92 | { |
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93 | return 'LOCALTIMESTAMP(0)'; |
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94 | } |
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95 | |||
96 | /** |
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97 | * {@inheritDoc} |
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98 | */ |
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99 | public function getRegexpExpression() |
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100 | { |
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101 | return 'SIMILAR TO'; |
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102 | } |
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103 | |||
104 | /** |
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105 | * {@inheritDoc} |
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106 | */ |
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107 | public function getLocateExpression($str, $substr, $startPos = false) |
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108 | { |
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109 | if ($startPos !== false) { |
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110 | $str = $this->getSubstringExpression($str, $startPos); |
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111 | |||
112 | return 'CASE WHEN (POSITION(' . $substr . ' IN ' . $str . ') = 0) THEN 0 ELSE (POSITION(' . $substr . ' IN ' . $str . ') + ' . ($startPos-1) . ') END'; |
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113 | } |
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114 | |||
115 | return 'POSITION(' . $substr . ' IN ' . $str . ')'; |
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116 | } |
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117 | |||
118 | /** |
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119 | * {@inheritdoc} |
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120 | */ |
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121 | protected function getDateArithmeticIntervalExpression($date, $operator, $interval, $unit) |
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122 | { |
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123 | if ($unit === DateIntervalUnit::QUARTER) { |
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124 | $interval *= 3; |
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125 | $unit = DateIntervalUnit::MONTH; |
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126 | } |
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127 | |||
128 | return '(' . $date . ' ' . $operator . ' (' . $interval . " || ' " . $unit . "')::interval)"; |
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129 | } |
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130 | |||
131 | /** |
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132 | * {@inheritDoc} |
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133 | */ |
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134 | public function getDateDiffExpression($date1, $date2) |
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135 | { |
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136 | return '(DATE(' . $date1 . ')-DATE(' . $date2 . '))'; |
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137 | } |
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138 | |||
139 | /** |
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140 | * {@inheritDoc} |
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141 | */ |
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142 | public function supportsSequences() |
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143 | { |
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144 | return true; |
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145 | } |
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146 | |||
147 | /** |
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148 | * {@inheritDoc} |
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149 | */ |
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150 | public function supportsSchemas() |
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151 | { |
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152 | return true; |
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153 | } |
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154 | |||
155 | /** |
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156 | * {@inheritdoc} |
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157 | */ |
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158 | public function getDefaultSchemaName() |
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159 | { |
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160 | return 'public'; |
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161 | } |
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162 | |||
163 | /** |
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164 | * {@inheritDoc} |
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165 | */ |
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166 | public function supportsIdentityColumns() |
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167 | { |
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168 | return true; |
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169 | } |
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170 | |||
171 | /** |
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172 | * {@inheritdoc} |
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173 | */ |
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174 | public function supportsPartialIndexes() |
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175 | { |
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176 | return true; |
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177 | } |
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178 | |||
179 | /** |
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180 | * {@inheritdoc} |
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181 | */ |
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182 | public function usesSequenceEmulatedIdentityColumns() |
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183 | { |
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184 | return true; |
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185 | } |
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186 | |||
187 | /** |
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188 | * {@inheritdoc} |
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189 | */ |
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190 | public function getIdentitySequenceName($tableName, $columnName) |
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191 | { |
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192 | return $tableName . '_' . $columnName . '_seq'; |
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193 | } |
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194 | |||
195 | /** |
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196 | * {@inheritDoc} |
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197 | */ |
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198 | public function supportsCommentOnStatement() |
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199 | { |
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200 | return true; |
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201 | } |
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202 | |||
203 | /** |
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204 | * {@inheritDoc} |
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205 | */ |
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206 | public function prefersSequences() |
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207 | { |
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208 | return true; |
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209 | } |
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210 | |||
211 | /** |
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212 | * {@inheritDoc} |
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213 | */ |
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214 | public function hasNativeGuidType() |
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215 | { |
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216 | return true; |
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217 | } |
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218 | |||
219 | /** |
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220 | * {@inheritDoc} |
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221 | */ |
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222 | public function getListDatabasesSQL() |
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225 | } |
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226 | |||
227 | /** |
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228 | * {@inheritDoc} |
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229 | */ |
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230 | public function getListNamespacesSQL() |
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231 | { |
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232 | return "SELECT schema_name AS nspname |
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233 | FROM information_schema.schemata |
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234 | WHERE schema_name NOT LIKE 'pg\_%' |
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235 | AND schema_name != 'information_schema'"; |
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236 | } |
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237 | |||
238 | /** |
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239 | * {@inheritDoc} |
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240 | */ |
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241 | public function getListSequencesSQL($database) |
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242 | { |
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243 | return "SELECT sequence_name AS relname, |
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244 | sequence_schema AS schemaname |
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245 | FROM information_schema.sequences |
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246 | WHERE sequence_schema NOT LIKE 'pg\_%' |
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247 | AND sequence_schema != 'information_schema'"; |
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248 | } |
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249 | |||
250 | /** |
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251 | * {@inheritDoc} |
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252 | */ |
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253 | public function getListTablesSQL() |
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254 | { |
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255 | return "SELECT quote_ident(table_name) AS table_name, |
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256 | table_schema AS schema_name |
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257 | FROM information_schema.tables |
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258 | WHERE table_schema NOT LIKE 'pg\_%' |
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259 | AND table_schema != 'information_schema' |
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260 | AND table_name != 'geometry_columns' |
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261 | AND table_name != 'spatial_ref_sys' |
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262 | AND table_type != 'VIEW'"; |
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263 | } |
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264 | |||
265 | /** |
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266 | * {@inheritDoc} |
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267 | */ |
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268 | public function getListViewsSQL($database) |
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269 | { |
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270 | return 'SELECT quote_ident(table_name) AS viewname, |
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271 | table_schema AS schemaname, |
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272 | view_definition AS definition |
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273 | FROM information_schema.views |
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274 | WHERE view_definition IS NOT NULL'; |
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275 | } |
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276 | |||
277 | /** |
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278 | * {@inheritDoc} |
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279 | */ |
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280 | public function getListTableForeignKeysSQL($table, $database = null) |
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281 | { |
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282 | return 'SELECT quote_ident(r.conname) as conname, pg_catalog.pg_get_constraintdef(r.oid, true) as condef |
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283 | FROM pg_catalog.pg_constraint r |
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284 | WHERE r.conrelid = |
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285 | ( |
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286 | SELECT c.oid |
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287 | FROM pg_catalog.pg_class c, pg_catalog.pg_namespace n |
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288 | WHERE ' . $this->getTableWhereClause($table) . " AND n.oid = c.relnamespace |
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289 | ) |
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290 | AND r.contype = 'f'"; |
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291 | } |
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292 | |||
293 | /** |
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294 | * {@inheritDoc} |
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295 | */ |
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296 | public function getCreateViewSQL($name, $sql) |
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297 | { |
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298 | return 'CREATE VIEW ' . $name . ' AS ' . $sql; |
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299 | } |
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300 | |||
301 | /** |
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302 | * {@inheritDoc} |
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303 | */ |
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304 | public function getDropViewSQL($name) |
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305 | { |
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306 | return 'DROP VIEW ' . $name; |
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307 | } |
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308 | |||
309 | /** |
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310 | * {@inheritDoc} |
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311 | */ |
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312 | public function getListTableConstraintsSQL($table) |
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313 | { |
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314 | $table = new Identifier($table); |
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315 | $table = $this->quoteStringLiteral($table->getName()); |
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316 | |||
317 | return sprintf( |
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318 | <<<'SQL' |
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319 | SELECT |
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320 | quote_ident(relname) as relname |
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321 | FROM |
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322 | pg_class |
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323 | WHERE oid IN ( |
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324 | SELECT indexrelid |
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325 | FROM pg_index, pg_class |
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326 | WHERE pg_class.relname = %s |
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327 | AND pg_class.oid = pg_index.indrelid |
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328 | AND (indisunique = 't' OR indisprimary = 't') |
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329 | ) |
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330 | SQL |
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331 | , |
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332 | $table |
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333 | ); |
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334 | } |
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335 | |||
336 | /** |
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337 | * {@inheritDoc} |
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338 | * |
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339 | * @link http://ezcomponents.org/docs/api/trunk/DatabaseSchema/ezcDbSchemaPgsqlReader.html |
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340 | */ |
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341 | public function getListTableIndexesSQL($table, $currentDatabase = null) |
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342 | { |
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343 | return 'SELECT quote_ident(relname) as relname, pg_index.indisunique, pg_index.indisprimary, |
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344 | pg_index.indkey, pg_index.indrelid, |
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345 | pg_get_expr(indpred, indrelid) AS where |
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346 | FROM pg_class, pg_index |
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347 | WHERE oid IN ( |
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348 | SELECT indexrelid |
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349 | FROM pg_index si, pg_class sc, pg_namespace sn |
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350 | WHERE ' . $this->getTableWhereClause($table, 'sc', 'sn') . ' AND sc.oid=si.indrelid AND sc.relnamespace = sn.oid |
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351 | ) AND pg_index.indexrelid = oid'; |
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352 | } |
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353 | |||
354 | /** |
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355 | * @param string $table |
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356 | * @param string $classAlias |
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357 | * @param string $namespaceAlias |
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358 | * |
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359 | * @return string |
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360 | */ |
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361 | private function getTableWhereClause($table, $classAlias = 'c', $namespaceAlias = 'n') |
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362 | { |
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363 | $whereClause = $namespaceAlias . ".nspname NOT IN ('pg_catalog', 'information_schema', 'pg_toast') AND "; |
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364 | if (strpos($table, '.') !== false) { |
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365 | [$schema, $table] = explode('.', $table); |
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366 | $schema = $this->quoteStringLiteral($schema); |
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367 | } else { |
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368 | $schema = 'ANY(current_schemas(false))'; |
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369 | } |
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370 | |||
371 | $table = new Identifier($table); |
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372 | $table = $this->quoteStringLiteral($table->getName()); |
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373 | |||
374 | return $whereClause . sprintf( |
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375 | '%s.relname = %s AND %s.nspname = %s', |
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376 | $classAlias, |
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377 | $table, |
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378 | $namespaceAlias, |
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379 | $schema |
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380 | ); |
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381 | } |
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382 | |||
383 | /** |
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384 | * {@inheritDoc} |
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385 | */ |
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386 | public function getListTableColumnsSQL($table, $database = null) |
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387 | { |
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388 | return "SELECT |
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389 | a.attnum, |
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390 | quote_ident(a.attname) AS field, |
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391 | t.typname AS type, |
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392 | format_type(a.atttypid, a.atttypmod) AS complete_type, |
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393 | (SELECT tc.collcollate FROM pg_catalog.pg_collation tc WHERE tc.oid = a.attcollation) AS collation, |
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394 | (SELECT t1.typname FROM pg_catalog.pg_type t1 WHERE t1.oid = t.typbasetype) AS domain_type, |
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395 | (SELECT format_type(t2.typbasetype, t2.typtypmod) FROM |
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396 | pg_catalog.pg_type t2 WHERE t2.typtype = 'd' AND t2.oid = a.atttypid) AS domain_complete_type, |
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397 | a.attnotnull AS isnotnull, |
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398 | (SELECT 't' |
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399 | FROM pg_index |
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400 | WHERE c.oid = pg_index.indrelid |
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401 | AND pg_index.indkey[0] = a.attnum |
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402 | AND pg_index.indisprimary = 't' |
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403 | ) AS pri, |
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404 | (SELECT pg_get_expr(adbin, adrelid) |
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405 | FROM pg_attrdef |
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406 | WHERE c.oid = pg_attrdef.adrelid |
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407 | AND pg_attrdef.adnum=a.attnum |
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408 | ) AS default, |
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409 | (SELECT pg_description.description |
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410 | FROM pg_description WHERE pg_description.objoid = c.oid AND a.attnum = pg_description.objsubid |
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411 | ) AS comment |
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412 | FROM pg_attribute a, pg_class c, pg_type t, pg_namespace n |
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413 | WHERE " . $this->getTableWhereClause($table, 'c', 'n') . ' |
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414 | AND a.attnum > 0 |
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415 | AND a.attrelid = c.oid |
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416 | AND a.atttypid = t.oid |
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417 | AND n.oid = c.relnamespace |
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418 | ORDER BY a.attnum'; |
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419 | } |
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420 | |||
421 | /** |
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422 | * {@inheritDoc} |
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423 | */ |
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424 | public function getCreateDatabaseSQL($name) |
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425 | { |
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426 | return 'CREATE DATABASE ' . $name; |
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427 | } |
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428 | |||
429 | /** |
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430 | * Returns the SQL statement for disallowing new connections on the given database. |
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431 | * |
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432 | * This is useful to force DROP DATABASE operations which could fail because of active connections. |
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433 | * |
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434 | * @param string $database The name of the database to disallow new connections for. |
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435 | * |
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436 | * @return string |
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437 | */ |
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438 | public function getDisallowDatabaseConnectionsSQL($database) |
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439 | { |
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440 | return "UPDATE pg_database SET datallowconn = 'false' WHERE datname = " . $this->quoteStringLiteral($database); |
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441 | } |
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442 | |||
443 | /** |
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444 | * Returns the SQL statement for closing currently active connections on the given database. |
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445 | * |
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446 | * This is useful to force DROP DATABASE operations which could fail because of active connections. |
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447 | * |
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448 | * @param string $database The name of the database to close currently active connections for. |
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449 | * |
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450 | * @return string |
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451 | */ |
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452 | public function getCloseActiveDatabaseConnectionsSQL($database) |
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453 | { |
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454 | return 'SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = ' |
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455 | . $this->quoteStringLiteral($database); |
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456 | } |
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457 | |||
458 | /** |
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459 | * {@inheritDoc} |
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460 | */ |
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461 | public function getAdvancedForeignKeyOptionsSQL(ForeignKeyConstraint $foreignKey) |
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462 | { |
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463 | $query = ''; |
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464 | |||
465 | if ($foreignKey->hasOption('match')) { |
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466 | $query .= ' MATCH ' . $foreignKey->getOption('match'); |
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467 | } |
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468 | |||
469 | $query .= parent::getAdvancedForeignKeyOptionsSQL($foreignKey); |
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470 | |||
471 | if ($foreignKey->hasOption('deferrable') && $foreignKey->getOption('deferrable') !== false) { |
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472 | $query .= ' DEFERRABLE'; |
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473 | } else { |
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474 | $query .= ' NOT DEFERRABLE'; |
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475 | } |
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476 | |||
477 | if (($foreignKey->hasOption('feferred') && $foreignKey->getOption('feferred') !== false) |
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478 | || ($foreignKey->hasOption('deferred') && $foreignKey->getOption('deferred') !== false) |
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479 | ) { |
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480 | $query .= ' INITIALLY DEFERRED'; |
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481 | } else { |
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482 | $query .= ' INITIALLY IMMEDIATE'; |
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483 | } |
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484 | |||
485 | return $query; |
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486 | } |
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487 | |||
488 | /** |
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489 | * {@inheritDoc} |
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490 | */ |
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491 | public function getAlterTableSQL(TableDiff $diff) |
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492 | { |
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493 | $sql = []; |
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494 | $commentsSQL = []; |
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495 | $columnSql = []; |
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496 | |||
497 | foreach ($diff->addedColumns as $column) { |
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498 | if ($this->onSchemaAlterTableAddColumn($column, $diff, $columnSql)) { |
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499 | continue; |
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500 | } |
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501 | |||
502 | $query = 'ADD ' . $this->getColumnDeclarationSQL($column->getQuotedName($this), $column->toArray()); |
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503 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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504 | |||
505 | $comment = $this->getColumnComment($column); |
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506 | |||
507 | if ($comment === null || $comment === '') { |
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508 | continue; |
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509 | } |
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510 | |||
511 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
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512 | $diff->getName($this)->getQuotedName($this), |
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513 | $column->getQuotedName($this), |
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514 | $comment |
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515 | ); |
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516 | } |
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517 | |||
518 | foreach ($diff->removedColumns as $column) { |
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519 | if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) { |
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520 | continue; |
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521 | } |
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522 | |||
523 | $query = 'DROP ' . $column->getQuotedName($this); |
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524 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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525 | } |
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526 | |||
527 | foreach ($diff->changedColumns as $columnDiff) { |
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528 | /** @var $columnDiff \Doctrine\DBAL\Schema\ColumnDiff */ |
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529 | if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) { |
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530 | continue; |
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531 | } |
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532 | |||
533 | if ($this->isUnchangedBinaryColumn($columnDiff)) { |
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534 | continue; |
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535 | } |
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536 | |||
537 | $oldColumnName = $columnDiff->getOldColumnName()->getQuotedName($this); |
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538 | $column = $columnDiff->column; |
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539 | |||
540 | if ($columnDiff->hasChanged('type') || $columnDiff->hasChanged('precision') || $columnDiff->hasChanged('scale') || $columnDiff->hasChanged('fixed')) { |
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541 | $type = $column->getType(); |
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542 | |||
543 | // SERIAL/BIGSERIAL are not "real" types and we can't alter a column to that type |
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544 | $columnDefinition = $column->toArray(); |
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545 | $columnDefinition['autoincrement'] = false; |
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546 | |||
547 | // here was a server version check before, but DBAL API does not support this anymore. |
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548 | $query = 'ALTER ' . $oldColumnName . ' TYPE ' . $type->getSQLDeclaration($columnDefinition, $this); |
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549 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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550 | } |
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551 | |||
552 | if ($columnDiff->hasChanged('default') || $this->typeChangeBreaksDefaultValue($columnDiff)) { |
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553 | $defaultClause = $column->getDefault() === null |
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554 | ? ' DROP DEFAULT' |
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555 | : ' SET' . $this->getDefaultValueDeclarationSQL($column->toArray()); |
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556 | $query = 'ALTER ' . $oldColumnName . $defaultClause; |
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557 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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558 | } |
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559 | |||
560 | if ($columnDiff->hasChanged('notnull')) { |
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561 | $query = 'ALTER ' . $oldColumnName . ' ' . ($column->getNotnull() ? 'SET' : 'DROP') . ' NOT NULL'; |
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562 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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563 | } |
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564 | |||
565 | if ($columnDiff->hasChanged('autoincrement')) { |
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566 | if ($column->getAutoincrement()) { |
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567 | // add autoincrement |
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568 | $seqName = $this->getIdentitySequenceName($diff->name, $oldColumnName); |
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569 | |||
570 | $sql[] = 'CREATE SEQUENCE ' . $seqName; |
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571 | $sql[] = "SELECT setval('" . $seqName . "', (SELECT MAX(" . $oldColumnName . ') FROM ' . $diff->getName($this)->getQuotedName($this) . '))'; |
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572 | $query = 'ALTER ' . $oldColumnName . " SET DEFAULT nextval('" . $seqName . "')"; |
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573 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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574 | } else { |
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575 | // Drop autoincrement, but do NOT drop the sequence. It might be re-used by other tables or have |
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576 | $query = 'ALTER ' . $oldColumnName . ' DROP DEFAULT'; |
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577 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
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578 | } |
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579 | } |
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580 | |||
581 | $newComment = $this->getColumnComment($column); |
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582 | $oldComment = $this->getOldColumnComment($columnDiff); |
||
583 | |||
584 | if ($columnDiff->hasChanged('comment') || ($columnDiff->fromColumn !== null && $oldComment !== $newComment)) { |
||
585 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
||
586 | $diff->getName($this)->getQuotedName($this), |
||
587 | $column->getQuotedName($this), |
||
588 | $newComment |
||
589 | ); |
||
590 | } |
||
591 | |||
592 | if (! $columnDiff->hasChanged('length')) { |
||
593 | continue; |
||
594 | } |
||
595 | |||
596 | $query = 'ALTER ' . $oldColumnName . ' TYPE ' . $column->getType()->getSQLDeclaration($column->toArray(), $this); |
||
597 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . $query; |
||
598 | } |
||
599 | |||
600 | foreach ($diff->renamedColumns as $oldColumnName => $column) { |
||
601 | if ($this->onSchemaAlterTableRenameColumn($oldColumnName, $column, $diff, $columnSql)) { |
||
602 | continue; |
||
603 | } |
||
604 | |||
605 | $oldColumnName = new Identifier($oldColumnName); |
||
606 | |||
607 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . |
||
608 | ' RENAME COLUMN ' . $oldColumnName->getQuotedName($this) . ' TO ' . $column->getQuotedName($this); |
||
609 | } |
||
610 | |||
611 | $tableSql = []; |
||
612 | |||
613 | if (! $this->onSchemaAlterTable($diff, $tableSql)) { |
||
614 | $sql = array_merge($sql, $commentsSQL); |
||
615 | |||
616 | $newName = $diff->getNewName(); |
||
617 | |||
618 | if ($newName !== false) { |
||
619 | $sql[] = sprintf( |
||
620 | 'ALTER TABLE %s RENAME TO %s', |
||
621 | $diff->getName($this)->getQuotedName($this), |
||
622 | $newName->getQuotedName($this) |
||
623 | ); |
||
624 | } |
||
625 | |||
626 | $sql = array_merge( |
||
627 | $this->getPreAlterTableIndexForeignKeySQL($diff), |
||
628 | $sql, |
||
629 | $this->getPostAlterTableIndexForeignKeySQL($diff) |
||
630 | ); |
||
631 | } |
||
632 | |||
633 | return array_merge($sql, $tableSql, $columnSql); |
||
634 | } |
||
635 | |||
636 | /** |
||
637 | * Checks whether a given column diff is a logically unchanged binary type column. |
||
638 | * |
||
639 | * Used to determine whether a column alteration for a binary type column can be skipped. |
||
640 | * Doctrine's {@link \Doctrine\DBAL\Types\BinaryType} and {@link \Doctrine\DBAL\Types\BlobType} |
||
641 | * are mapped to the same database column type on this platform as this platform |
||
642 | * does not have a native VARBINARY/BINARY column type. Therefore the {@link \Doctrine\DBAL\Schema\Comparator} |
||
643 | * might detect differences for binary type columns which do not have to be propagated |
||
644 | * to database as there actually is no difference at database level. |
||
645 | * |
||
646 | * @param ColumnDiff $columnDiff The column diff to check against. |
||
647 | * |
||
648 | * @return bool True if the given column diff is an unchanged binary type column, false otherwise. |
||
649 | */ |
||
650 | private function isUnchangedBinaryColumn(ColumnDiff $columnDiff) |
||
651 | { |
||
652 | $columnType = $columnDiff->column->getType(); |
||
653 | |||
654 | if (! $columnType instanceof BinaryType && ! $columnType instanceof BlobType) { |
||
655 | return false; |
||
656 | } |
||
657 | |||
658 | $fromColumn = $columnDiff->fromColumn instanceof Column ? $columnDiff->fromColumn : null; |
||
659 | |||
660 | if ($fromColumn) { |
||
661 | $fromColumnType = $fromColumn->getType(); |
||
662 | |||
663 | if (! $fromColumnType instanceof BinaryType && ! $fromColumnType instanceof BlobType) { |
||
664 | return false; |
||
665 | } |
||
666 | |||
667 | return count(array_diff($columnDiff->changedProperties, ['type', 'length', 'fixed'])) === 0; |
||
668 | } |
||
669 | |||
670 | if ($columnDiff->hasChanged('type')) { |
||
671 | return false; |
||
672 | } |
||
673 | |||
674 | return count(array_diff($columnDiff->changedProperties, ['length', 'fixed'])) === 0; |
||
675 | } |
||
676 | |||
677 | /** |
||
678 | * {@inheritdoc} |
||
679 | */ |
||
680 | protected function getRenameIndexSQL($oldIndexName, Index $index, $tableName) |
||
681 | { |
||
682 | if (strpos($tableName, '.') !== false) { |
||
683 | [$schema] = explode('.', $tableName); |
||
684 | $oldIndexName = $schema . '.' . $oldIndexName; |
||
685 | } |
||
686 | |||
687 | return ['ALTER INDEX ' . $oldIndexName . ' RENAME TO ' . $index->getQuotedName($this)]; |
||
688 | } |
||
689 | |||
690 | /** |
||
691 | * {@inheritdoc} |
||
692 | */ |
||
693 | public function getCommentOnColumnSQL($tableName, $columnName, $comment) |
||
694 | { |
||
695 | $tableName = new Identifier($tableName); |
||
696 | $columnName = new Identifier($columnName); |
||
697 | $comment = $comment === null ? 'NULL' : $this->quoteStringLiteral($comment); |
||
698 | |||
699 | return sprintf( |
||
700 | 'COMMENT ON COLUMN %s.%s IS %s', |
||
701 | $tableName->getQuotedName($this), |
||
702 | $columnName->getQuotedName($this), |
||
703 | $comment |
||
704 | ); |
||
705 | } |
||
706 | |||
707 | /** |
||
708 | * {@inheritDoc} |
||
709 | */ |
||
710 | public function getCreateSequenceSQL(Sequence $sequence) |
||
711 | { |
||
712 | return 'CREATE SEQUENCE ' . $sequence->getQuotedName($this) . |
||
713 | ' INCREMENT BY ' . $sequence->getAllocationSize() . |
||
714 | ' MINVALUE ' . $sequence->getInitialValue() . |
||
715 | ' START ' . $sequence->getInitialValue() . |
||
716 | $this->getSequenceCacheSQL($sequence); |
||
717 | } |
||
718 | |||
719 | /** |
||
720 | * {@inheritDoc} |
||
721 | */ |
||
722 | public function getAlterSequenceSQL(Sequence $sequence) |
||
723 | { |
||
724 | return 'ALTER SEQUENCE ' . $sequence->getQuotedName($this) . |
||
725 | ' INCREMENT BY ' . $sequence->getAllocationSize() . |
||
726 | $this->getSequenceCacheSQL($sequence); |
||
727 | } |
||
728 | |||
729 | /** |
||
730 | * Cache definition for sequences |
||
731 | * |
||
732 | * @return string |
||
733 | */ |
||
734 | private function getSequenceCacheSQL(Sequence $sequence) |
||
735 | { |
||
736 | if ($sequence->getCache() > 1) { |
||
737 | return ' CACHE ' . $sequence->getCache(); |
||
738 | } |
||
739 | |||
740 | return ''; |
||
741 | } |
||
742 | |||
743 | /** |
||
744 | * {@inheritDoc} |
||
745 | */ |
||
746 | public function getDropSequenceSQL($sequence) |
||
747 | { |
||
748 | if ($sequence instanceof Sequence) { |
||
749 | $sequence = $sequence->getQuotedName($this); |
||
750 | } |
||
751 | |||
752 | return 'DROP SEQUENCE ' . $sequence . ' CASCADE'; |
||
753 | } |
||
754 | |||
755 | /** |
||
756 | * {@inheritDoc} |
||
757 | */ |
||
758 | public function getCreateSchemaSQL($schemaName) |
||
759 | { |
||
760 | return 'CREATE SCHEMA ' . $schemaName; |
||
761 | } |
||
762 | |||
763 | /** |
||
764 | * {@inheritDoc} |
||
765 | */ |
||
766 | public function getDropForeignKeySQL($foreignKey, $table) |
||
767 | { |
||
768 | return $this->getDropConstraintSQL($foreignKey, $table); |
||
769 | } |
||
770 | |||
771 | /** |
||
772 | * {@inheritDoc} |
||
773 | */ |
||
774 | protected function _getCreateTableSQL($tableName, array $columns, array $options = []) |
||
775 | { |
||
776 | $queryFields = $this->getColumnDeclarationListSQL($columns); |
||
777 | |||
778 | if (isset($options['primary']) && ! empty($options['primary'])) { |
||
779 | $keyColumns = array_unique(array_values($options['primary'])); |
||
780 | $queryFields .= ', PRIMARY KEY(' . implode(', ', $keyColumns) . ')'; |
||
781 | } |
||
782 | |||
783 | $query = 'CREATE TABLE ' . $tableName . ' (' . $queryFields . ')'; |
||
784 | |||
785 | $sql = [$query]; |
||
786 | |||
787 | if (isset($options['indexes']) && ! empty($options['indexes'])) { |
||
788 | foreach ($options['indexes'] as $index) { |
||
789 | $sql[] = $this->getCreateIndexSQL($index, $tableName); |
||
790 | } |
||
791 | } |
||
792 | |||
793 | if (isset($options['foreignKeys'])) { |
||
794 | foreach ((array) $options['foreignKeys'] as $definition) { |
||
795 | $sql[] = $this->getCreateForeignKeySQL($definition, $tableName); |
||
796 | } |
||
797 | } |
||
798 | |||
799 | return $sql; |
||
800 | } |
||
801 | |||
802 | /** |
||
803 | * Converts a single boolean value. |
||
804 | * |
||
805 | * First converts the value to its native PHP boolean type |
||
806 | * and passes it to the given callback function to be reconverted |
||
807 | * into any custom representation. |
||
808 | * |
||
809 | * @param mixed $value The value to convert. |
||
810 | * @param callable $callback The callback function to use for converting the real boolean value. |
||
811 | * |
||
812 | * @return mixed |
||
813 | * |
||
814 | * @throws UnexpectedValueException |
||
815 | */ |
||
816 | private function convertSingleBooleanValue($value, $callback) |
||
817 | { |
||
818 | if ($value === null) { |
||
819 | return $callback(null); |
||
820 | } |
||
821 | |||
822 | if (is_bool($value) || is_numeric($value)) { |
||
823 | return $callback((bool) $value); |
||
824 | } |
||
825 | |||
826 | if (! is_string($value)) { |
||
827 | return $callback(true); |
||
828 | } |
||
829 | |||
830 | /** |
||
831 | * Better safe than sorry: http://php.net/in_array#106319 |
||
832 | */ |
||
833 | if (in_array(strtolower(trim($value)), $this->booleanLiterals['false'], true)) { |
||
834 | return $callback(false); |
||
835 | } |
||
836 | |||
837 | if (in_array(strtolower(trim($value)), $this->booleanLiterals['true'], true)) { |
||
838 | return $callback(true); |
||
839 | } |
||
840 | |||
841 | throw new UnexpectedValueException("Unrecognized boolean literal '${value}'"); |
||
842 | } |
||
843 | |||
844 | /** |
||
845 | * Converts one or multiple boolean values. |
||
846 | * |
||
847 | * First converts the value(s) to their native PHP boolean type |
||
848 | * and passes them to the given callback function to be reconverted |
||
849 | * into any custom representation. |
||
850 | * |
||
851 | * @param mixed $item The value(s) to convert. |
||
852 | * @param callable $callback The callback function to use for converting the real boolean value(s). |
||
853 | * |
||
854 | * @return mixed |
||
855 | */ |
||
856 | private function doConvertBooleans($item, $callback) |
||
857 | { |
||
858 | if (is_array($item)) { |
||
859 | foreach ($item as $key => $value) { |
||
860 | $item[$key] = $this->convertSingleBooleanValue($value, $callback); |
||
861 | } |
||
862 | |||
863 | return $item; |
||
864 | } |
||
865 | |||
866 | return $this->convertSingleBooleanValue($item, $callback); |
||
867 | } |
||
868 | |||
869 | /** |
||
870 | * {@inheritDoc} |
||
871 | * |
||
872 | * Postgres wants boolean values converted to the strings 'true'/'false'. |
||
873 | */ |
||
874 | public function convertBooleans($item) |
||
875 | { |
||
876 | if (! $this->useBooleanTrueFalseStrings) { |
||
877 | return parent::convertBooleans($item); |
||
878 | } |
||
879 | |||
880 | return $this->doConvertBooleans( |
||
881 | $item, |
||
882 | static function ($boolean) { |
||
883 | if ($boolean === null) { |
||
884 | return 'NULL'; |
||
885 | } |
||
886 | |||
887 | return $boolean === true ? 'true' : 'false'; |
||
888 | } |
||
889 | ); |
||
890 | } |
||
891 | |||
892 | /** |
||
893 | * {@inheritDoc} |
||
894 | */ |
||
895 | public function convertBooleansToDatabaseValue($item) |
||
896 | { |
||
897 | if (! $this->useBooleanTrueFalseStrings) { |
||
898 | return parent::convertBooleansToDatabaseValue($item); |
||
899 | } |
||
900 | |||
901 | return $this->doConvertBooleans( |
||
902 | $item, |
||
903 | static function ($boolean) { |
||
904 | return $boolean === null ? null : (int) $boolean; |
||
905 | } |
||
906 | ); |
||
907 | } |
||
908 | |||
909 | /** |
||
910 | * {@inheritDoc} |
||
911 | */ |
||
912 | public function convertFromBoolean($item) |
||
913 | { |
||
914 | if (in_array(strtolower($item), $this->booleanLiterals['false'], true)) { |
||
915 | return false; |
||
916 | } |
||
917 | |||
918 | return parent::convertFromBoolean($item); |
||
919 | } |
||
920 | |||
921 | /** |
||
922 | * {@inheritDoc} |
||
923 | */ |
||
924 | public function getSequenceNextValSQL($sequenceName) |
||
925 | { |
||
926 | return "SELECT NEXTVAL('" . $sequenceName . "')"; |
||
927 | } |
||
928 | |||
929 | /** |
||
930 | * {@inheritDoc} |
||
931 | */ |
||
932 | public function getSetTransactionIsolationSQL($level) |
||
933 | { |
||
934 | return 'SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL ' |
||
935 | . $this->_getTransactionIsolationLevelSQL($level); |
||
936 | } |
||
937 | |||
938 | /** |
||
939 | * {@inheritDoc} |
||
940 | */ |
||
941 | public function getBooleanTypeDeclarationSQL(array $field) |
||
942 | { |
||
943 | return 'BOOLEAN'; |
||
944 | } |
||
945 | |||
946 | /** |
||
947 | * {@inheritDoc} |
||
948 | */ |
||
949 | public function getIntegerTypeDeclarationSQL(array $field) |
||
950 | { |
||
951 | if (! empty($field['autoincrement'])) { |
||
952 | return 'SERIAL'; |
||
953 | } |
||
954 | |||
955 | return 'INT'; |
||
956 | } |
||
957 | |||
958 | /** |
||
959 | * {@inheritDoc} |
||
960 | */ |
||
961 | public function getBigIntTypeDeclarationSQL(array $field) |
||
962 | { |
||
963 | if (! empty($field['autoincrement'])) { |
||
964 | return 'BIGSERIAL'; |
||
965 | } |
||
966 | |||
967 | return 'BIGINT'; |
||
968 | } |
||
969 | |||
970 | /** |
||
971 | * {@inheritDoc} |
||
972 | */ |
||
973 | public function getSmallIntTypeDeclarationSQL(array $field) |
||
974 | { |
||
975 | if (! empty($field['autoincrement'])) { |
||
976 | return 'SMALLSERIAL'; |
||
977 | } |
||
978 | |||
979 | return 'SMALLINT'; |
||
980 | } |
||
981 | |||
982 | /** |
||
983 | * {@inheritDoc} |
||
984 | */ |
||
985 | public function getGuidTypeDeclarationSQL(array $field) |
||
986 | { |
||
987 | return 'UUID'; |
||
988 | } |
||
989 | |||
990 | /** |
||
991 | * {@inheritDoc} |
||
992 | */ |
||
993 | public function getDateTimeTypeDeclarationSQL(array $fieldDeclaration) |
||
994 | { |
||
995 | return 'TIMESTAMP(0) WITHOUT TIME ZONE'; |
||
996 | } |
||
997 | |||
998 | /** |
||
999 | * {@inheritDoc} |
||
1000 | */ |
||
1001 | public function getDateTimeTzTypeDeclarationSQL(array $fieldDeclaration) |
||
1002 | { |
||
1003 | return 'TIMESTAMP(0) WITH TIME ZONE'; |
||
1004 | } |
||
1005 | |||
1006 | /** |
||
1007 | * {@inheritDoc} |
||
1008 | */ |
||
1009 | public function getDateTypeDeclarationSQL(array $fieldDeclaration) |
||
1010 | { |
||
1011 | return 'DATE'; |
||
1012 | } |
||
1013 | |||
1014 | /** |
||
1015 | * {@inheritDoc} |
||
1016 | */ |
||
1017 | public function getTimeTypeDeclarationSQL(array $fieldDeclaration) |
||
1018 | { |
||
1019 | return 'TIME(0) WITHOUT TIME ZONE'; |
||
1020 | } |
||
1021 | |||
1022 | /** |
||
1023 | * {@inheritDoc} |
||
1024 | * |
||
1025 | * @deprecated Use application-generated UUIDs instead |
||
1026 | */ |
||
1027 | public function getGuidExpression() |
||
1028 | { |
||
1029 | return 'UUID_GENERATE_V4()'; |
||
1030 | } |
||
1031 | |||
1032 | /** |
||
1033 | * {@inheritDoc} |
||
1034 | */ |
||
1035 | protected function _getCommonIntegerTypeDeclarationSQL(array $columnDef) |
||
1036 | { |
||
1037 | return ''; |
||
1038 | } |
||
1039 | |||
1040 | /** |
||
1041 | * {@inheritDoc} |
||
1042 | */ |
||
1043 | protected function getVarcharTypeDeclarationSQLSnippet($length, $fixed) |
||
1044 | { |
||
1045 | return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(255)') |
||
1046 | : ($length ? 'VARCHAR(' . $length . ')' : 'VARCHAR(255)'); |
||
1047 | } |
||
1048 | |||
1049 | /** |
||
1050 | * {@inheritdoc} |
||
1051 | */ |
||
1052 | protected function getBinaryTypeDeclarationSQLSnippet($length, $fixed) |
||
1053 | { |
||
1054 | return 'BYTEA'; |
||
1055 | } |
||
1056 | |||
1057 | /** |
||
1058 | * {@inheritDoc} |
||
1059 | */ |
||
1060 | public function getClobTypeDeclarationSQL(array $field) |
||
1061 | { |
||
1062 | return 'TEXT'; |
||
1063 | } |
||
1064 | |||
1065 | /** |
||
1066 | * {@inheritDoc} |
||
1067 | */ |
||
1068 | public function getName() |
||
1069 | { |
||
1070 | return 'postgresql'; |
||
1071 | } |
||
1072 | |||
1073 | /** |
||
1074 | * {@inheritDoc} |
||
1075 | * |
||
1076 | * PostgreSQL returns all column names in SQL result sets in lowercase. |
||
1077 | */ |
||
1078 | public function getSQLResultCasing($column) |
||
1079 | { |
||
1080 | return strtolower($column); |
||
1081 | } |
||
1082 | |||
1083 | /** |
||
1084 | * {@inheritDoc} |
||
1085 | */ |
||
1086 | public function getDateTimeTzFormatString() |
||
1087 | { |
||
1088 | return 'Y-m-d H:i:sO'; |
||
1089 | } |
||
1090 | |||
1091 | /** |
||
1092 | * {@inheritDoc} |
||
1093 | */ |
||
1094 | public function getEmptyIdentityInsertSQL($quotedTableName, $quotedIdentifierColumnName) |
||
1095 | { |
||
1096 | return 'INSERT INTO ' . $quotedTableName . ' (' . $quotedIdentifierColumnName . ') VALUES (DEFAULT)'; |
||
1097 | } |
||
1098 | |||
1099 | /** |
||
1100 | * {@inheritDoc} |
||
1101 | */ |
||
1102 | public function getTruncateTableSQL($tableName, $cascade = false) |
||
1103 | { |
||
1104 | $tableIdentifier = new Identifier($tableName); |
||
1105 | $sql = 'TRUNCATE ' . $tableIdentifier->getQuotedName($this); |
||
1106 | |||
1107 | if ($cascade) { |
||
1108 | $sql .= ' CASCADE'; |
||
1109 | } |
||
1110 | |||
1111 | return $sql; |
||
1112 | } |
||
1113 | |||
1114 | /** |
||
1115 | * {@inheritDoc} |
||
1116 | */ |
||
1117 | public function getReadLockSQL() |
||
1118 | { |
||
1119 | return 'FOR SHARE'; |
||
1120 | } |
||
1121 | |||
1122 | /** |
||
1123 | * {@inheritDoc} |
||
1124 | */ |
||
1125 | protected function initializeDoctrineTypeMappings() |
||
1126 | { |
||
1127 | $this->doctrineTypeMapping = [ |
||
1128 | 'bigint' => 'bigint', |
||
1129 | 'bigserial' => 'bigint', |
||
1130 | 'bool' => 'boolean', |
||
1131 | 'boolean' => 'boolean', |
||
1132 | 'bpchar' => 'string', |
||
1133 | 'bytea' => 'blob', |
||
1134 | 'char' => 'string', |
||
1135 | 'date' => 'date', |
||
1136 | 'datetime' => 'datetime', |
||
1137 | 'decimal' => 'decimal', |
||
1138 | 'double' => 'float', |
||
1139 | 'double precision' => 'float', |
||
1140 | 'float' => 'float', |
||
1141 | 'float4' => 'float', |
||
1142 | 'float8' => 'float', |
||
1143 | 'inet' => 'string', |
||
1144 | 'int' => 'integer', |
||
1145 | 'int2' => 'smallint', |
||
1146 | 'int4' => 'integer', |
||
1147 | 'int8' => 'bigint', |
||
1148 | 'integer' => 'integer', |
||
1149 | 'interval' => 'string', |
||
1150 | 'json' => Type::JSON, |
||
1151 | 'jsonb' => Type::JSON, |
||
1152 | 'money' => 'decimal', |
||
1153 | 'numeric' => 'decimal', |
||
1154 | 'serial' => 'integer', |
||
1155 | 'serial4' => 'integer', |
||
1156 | 'serial8' => 'bigint', |
||
1157 | 'real' => 'float', |
||
1158 | 'smallint' => 'smallint', |
||
1159 | 'text' => 'text', |
||
1160 | 'time' => 'time', |
||
1161 | 'timestamp' => 'datetime', |
||
1162 | 'timestamptz' => 'datetimetz', |
||
1163 | 'timetz' => 'time', |
||
1164 | 'tsvector' => 'text', |
||
1165 | 'uuid' => 'guid', |
||
1166 | 'varchar' => 'string', |
||
1167 | 'year' => 'date', |
||
1168 | '_varchar' => 'string', |
||
1169 | ]; |
||
1170 | } |
||
1171 | |||
1172 | /** |
||
1173 | * {@inheritDoc} |
||
1174 | */ |
||
1175 | public function getVarcharMaxLength() |
||
1176 | { |
||
1177 | return 65535; |
||
1178 | } |
||
1179 | |||
1180 | /** |
||
1181 | * {@inheritdoc} |
||
1182 | */ |
||
1183 | public function getBinaryMaxLength() |
||
1184 | { |
||
1185 | return 0; |
||
1186 | } |
||
1187 | |||
1188 | /** |
||
1189 | * {@inheritdoc} |
||
1190 | */ |
||
1191 | public function getBinaryDefaultLength() |
||
1192 | { |
||
1193 | return 0; |
||
1194 | } |
||
1195 | |||
1196 | /** |
||
1197 | * {@inheritdoc} |
||
1198 | */ |
||
1199 | public function hasNativeJsonType() |
||
1200 | { |
||
1201 | return true; |
||
1202 | } |
||
1203 | |||
1204 | /** |
||
1205 | * {@inheritDoc} |
||
1206 | */ |
||
1207 | protected function getReservedKeywordsClass() |
||
1208 | { |
||
1209 | return Keywords\PostgreSQL94Keywords::class; |
||
1210 | } |
||
1211 | |||
1212 | /** |
||
1213 | * {@inheritDoc} |
||
1214 | */ |
||
1215 | public function getBlobTypeDeclarationSQL(array $field) |
||
1216 | { |
||
1217 | return 'BYTEA'; |
||
1218 | } |
||
1219 | |||
1220 | /** |
||
1221 | * {@inheritdoc} |
||
1222 | */ |
||
1223 | public function getDefaultValueDeclarationSQL($field) |
||
1230 | } |
||
1231 | |||
1232 | /** |
||
1233 | * {@inheritdoc} |
||
1234 | */ |
||
1235 | public function supportsColumnCollation() |
||
1236 | { |
||
1237 | return true; |
||
1238 | } |
||
1239 | |||
1240 | /** |
||
1241 | * {@inheritdoc} |
||
1242 | */ |
||
1243 | public function getColumnCollationDeclarationSQL($collation) |
||
1244 | { |
||
1245 | return 'COLLATE ' . $this->quoteSingleIdentifier($collation); |
||
1246 | } |
||
1247 | |||
1248 | /** |
||
1249 | * {@inheritdoc} |
||
1250 | */ |
||
1251 | public function getJsonTypeDeclarationSQL(array $field) |
||
1252 | { |
||
1253 | if (! empty($field['jsonb'])) { |
||
1254 | return 'JSONB'; |
||
1255 | } |
||
1256 | |||
1257 | return 'JSON'; |
||
1258 | } |
||
1259 | |||
1260 | /** |
||
1261 | * @param mixed[] $field |
||
1262 | */ |
||
1263 | private function isSerialField(array $field) : bool |
||
1268 | } |
||
1269 | |||
1270 | /** |
||
1271 | * Check whether the type of a column is changed in a way that invalidates the default value for the column |
||
1272 | */ |
||
1273 | private function typeChangeBreaksDefaultValue(ColumnDiff $columnDiff) : bool |
||
1274 | { |
||
1275 | if (! $columnDiff->fromColumn) { |
||
1276 | return $columnDiff->hasChanged('type'); |
||
1277 | } |
||
1278 | |||
1279 | $oldTypeIsNumeric = $this->isNumericType($columnDiff->fromColumn->getType()); |
||
1280 | $newTypeIsNumeric = $this->isNumericType($columnDiff->column->getType()); |
||
1281 | |||
1282 | // default should not be changed when switching between numeric types and the default comes from a sequence |
||
1283 | return $columnDiff->hasChanged('type') |
||
1284 | && ! ($oldTypeIsNumeric && $newTypeIsNumeric && $columnDiff->column->getAutoincrement()); |
||
1285 | } |
||
1286 | |||
1287 | private function isNumericType(Type $type) : bool |
||
1288 | { |
||
1289 | return $type instanceof IntegerType || $type instanceof BigIntType; |
||
1290 | } |
||
1291 | |||
1292 | private function getOldColumnComment(ColumnDiff $columnDiff) : ?string |
||
1295 | } |
||
1296 | |||
1297 | public function getListTableMetadataSQL(string $table, ?string $schema = null) : string |
||
1298 | { |
||
1299 | if ($schema !== null) { |
||
1300 | $table = $schema . '.' . $table; |
||
1301 | } |
||
1302 | |||
1303 | return sprintf( |
||
1304 | <<<'SQL' |
||
1305 | SELECT obj_description(%s::regclass) AS table_comment; |
||
1306 | SQL |
||
1307 | , |
||
1308 | $this->quoteStringLiteral($table) |
||
1309 | ); |
||
1310 | } |
||
1311 | } |
||
1312 |
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.