Total Complexity | 45 |
Total Lines | 458 |
Duplicated Lines | 0 % |
Changes | 2 | ||
Bugs | 0 | Features | 0 |
Complex classes like Grammar 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 Grammar, and based on these observations, apply Extract Interface, too.
1 | <?php |
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22 | class Grammar extends IlluminateQueryGrammar |
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23 | { |
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24 | use CompilesAggregates; |
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25 | use CompilesColumns; |
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26 | use CompilesFilters; |
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27 | use CompilesDataManipulations; |
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28 | use CompilesJoins; |
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29 | use CompilesGroups; |
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30 | use CompilesUnions; |
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31 | use ConvertsIdToKey; |
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32 | use HandlesAqlGrammar; |
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33 | use Macroable; |
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34 | |||
35 | public string $name; |
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36 | |||
37 | /** |
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38 | * The grammar table prefix. |
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39 | * |
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40 | * @var string |
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41 | */ |
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42 | protected $tablePrefix = ''; |
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43 | |||
44 | /** |
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45 | * The grammar table prefix. |
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46 | * |
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47 | * @var null|int |
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48 | */ |
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49 | protected $offset = null; |
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50 | |||
51 | /** |
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52 | * The grammar specific operators. |
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53 | * |
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54 | * @var array<string> |
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55 | */ |
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56 | protected $operators = [ |
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57 | '==', '!=', '<', '>', '<=', '>=', |
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58 | 'IN', 'NOT IN', 'LIKE', 'NOT LIKE', '=~', '!~', |
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59 | 'ALL ==', 'ALL !=', 'ALL <', 'ALL >', 'ALL <=', 'ALL >=', 'ALL IN', 'ALL NOT IN', |
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60 | 'ANY ==', 'ANY !=', 'ANY <', 'ANY >', 'ANY <=', 'ANY >=', 'ANY IN', 'ANY NOT IN', |
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61 | 'NONE ==', 'NONE !=', 'NONE <', 'NONE >', 'NONE <=', 'NONE >=', 'NONE IN', 'NONE NOT IN', |
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62 | ]; |
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63 | |||
64 | /** |
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65 | * The components that make up a select clause. |
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66 | * |
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67 | * @var array<string> |
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68 | */ |
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69 | protected $selectComponents = [ |
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70 | 'preIterationVariables', |
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71 | 'from', |
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72 | 'search', |
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73 | 'joins', |
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74 | 'postIterationVariables', |
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75 | 'wheres', |
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76 | 'groups', |
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77 | 'aggregate', |
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78 | 'havings', |
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79 | 'orders', |
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80 | 'offset', |
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81 | 'limit', |
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82 | 'columns', |
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83 | ]; |
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84 | |||
85 | /** |
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86 | * @var array<string, string> |
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87 | */ |
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88 | protected array $operatorTranslations = [ |
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89 | '=' => '==', |
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90 | '<>' => '!=', |
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91 | '<=>' => '==', |
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92 | 'rlike' => '=~', |
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93 | 'not rlike' => '!~', |
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94 | 'regexp' => '=~', |
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95 | 'not regexp' => '!~', |
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96 | ]; |
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97 | |||
98 | /** |
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99 | * @var array<string, string> |
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100 | */ |
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101 | protected array $whereTypeOperators = [ |
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102 | 'In' => 'IN', |
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103 | 'NotIn' => 'NOT IN', |
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104 | ]; |
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105 | |||
106 | /** |
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107 | * The grammar specific bitwise operators. |
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108 | * |
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109 | * @var array<string> |
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110 | */ |
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111 | public $bitwiseOperators = [ |
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112 | '&', '|', '^', '<<', '>>', '~', |
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113 | ]; |
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114 | |||
115 | /** |
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116 | * Get the format for database stored dates. |
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117 | * |
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118 | * @return string |
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119 | */ |
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120 | public function getDateFormat() |
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121 | { |
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122 | return config('arangodb.datetime_format'); |
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123 | } |
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124 | |||
125 | /** |
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126 | * Get the grammar specific operators. |
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127 | * |
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128 | * @return array<string> |
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129 | */ |
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130 | public function getOperators() |
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131 | { |
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132 | return $this->operators; |
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133 | } |
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134 | |||
135 | |||
136 | public function translateOperator(string $operator): string |
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137 | { |
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138 | if (array_key_exists($operator, $this->operatorTranslations)) { |
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139 | return $this->operatorTranslations[$operator]; |
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140 | } |
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141 | |||
142 | return $operator; |
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143 | } |
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144 | |||
145 | protected function prefixTable(Expression|bool|float|int|string|null $table): string |
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146 | { |
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147 | return $this->tablePrefix . $this->getValue($table); |
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148 | } |
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149 | |||
150 | |||
151 | /** |
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152 | * Get the appropriate query parameter place-holder for a value. |
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153 | * |
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154 | * @param mixed $value |
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155 | * @return string |
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156 | */ |
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157 | public function parameter($value) |
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158 | { |
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159 | |||
160 | return $this->isExpression($value) ? $this->getValue($value) : $value; |
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161 | } |
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162 | |||
163 | /** |
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164 | * Compile the components necessary for a select clause. |
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165 | * |
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166 | * @param IlluminateQueryBuilder $query |
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167 | * @return array<string, string> |
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168 | */ |
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169 | protected function compileComponents(IlluminateQueryBuilder $query) |
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170 | { |
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171 | $aql = []; |
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172 | |||
173 | foreach ($this->selectComponents as $component) { |
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174 | if ($component === 'unions') { |
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175 | continue; |
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176 | } |
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177 | |||
178 | if ($component === 'aggregate' && $query->unions !== null) { |
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179 | continue; |
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180 | } |
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181 | |||
182 | if (isset($query->$component)) { |
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183 | $method = 'compile' . ucfirst($component); |
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184 | |||
185 | $aql[$component] = $this->$method($query, $query->$component); |
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186 | } |
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187 | } |
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188 | |||
189 | return $aql; |
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190 | } |
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191 | |||
192 | |||
193 | |||
194 | /** |
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195 | * Compile a select query into SQL. |
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196 | * |
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197 | * @param IlluminateQueryBuilder $query |
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198 | * @return string |
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199 | */ |
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200 | public function compileSelect(IlluminateQueryBuilder $query) |
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201 | { |
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202 | assert($query instanceof Builder); |
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203 | |||
204 | // If the query does not have any columns set, we'll set the columns to the |
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205 | // * character to just get all of the columns from the database. Then we |
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206 | // can build the query and concatenate all the pieces together as one. |
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207 | $original = $query->columns; |
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208 | |||
209 | if (empty($query->columns) || $query->unions !== null) { |
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210 | $query->columns = ['*']; |
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211 | } |
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212 | |||
213 | // To compile the query, we'll spin through each component of the query and |
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214 | // see if that component exists. If it does we'll just call the compiler |
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215 | // function for the component which is responsible for making the SQL. |
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216 | |||
217 | $aql = trim( |
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218 | $this->concatenate( |
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219 | $this->compileComponents($query), |
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220 | ), |
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221 | ); |
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222 | |||
223 | $query->columns = $original; |
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224 | |||
225 | if ($query->unions) { |
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226 | return $this->compileUnions($query, $aql); |
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227 | } |
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228 | |||
229 | if ($query->groupVariables !== null) { |
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230 | $query->cleanGroupVariables(); |
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231 | } |
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232 | |||
233 | return $aql; |
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234 | } |
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235 | |||
236 | /** |
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237 | * Compile the "from" portion of the query -> FOR in AQL. |
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238 | * |
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239 | * @param IlluminateQueryBuilder $query |
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240 | * @param Expression|string $table |
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241 | * |
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242 | * @return string |
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243 | */ |
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244 | protected function compileFrom(IlluminateQueryBuilder $query, $table) |
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245 | { |
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246 | assert($query instanceof Builder); |
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247 | |||
248 | // FIXME: wrapping/quoting |
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249 | $table = $this->prefixTable($this->getValue($table)); |
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250 | |||
251 | $alias = $query->registerTableAlias($table); |
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252 | |||
253 | $aql = "FOR $alias IN $table"; |
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254 | |||
255 | if (!empty($query->fromOptions)) { |
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256 | $aql .= $this->compileFromOptions($query->fromOptions); |
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257 | } |
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258 | |||
259 | return $aql; |
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260 | } |
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261 | |||
262 | /** |
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263 | * Compile AQL options for the "from" portion of the query. |
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264 | * |
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265 | * @param array<mixed> $options |
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266 | * |
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267 | * @SuppressWarnings("PHPMD.UnusedFormalParameter") |
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268 | */ |
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269 | protected function compileFromOptions($options): string |
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270 | { |
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271 | return ' OPTIONS ' . $this->generateAqlObject($options); |
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272 | } |
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273 | |||
274 | /** |
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275 | * @param IlluminateQueryBuilder $query |
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276 | * @param array<string, mixed> $variables |
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277 | * @return string |
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278 | */ |
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279 | protected function compilePreIterationVariables(IlluminateQueryBuilder $query, array $variables): string |
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280 | { |
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281 | return $this->compileVariables($query, $variables); |
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282 | } |
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283 | |||
284 | /** |
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285 | * @param IlluminateQueryBuilder $query |
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286 | * @param array<string, mixed> $variables |
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287 | * @return string |
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288 | */ |
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289 | protected function compilePostIterationVariables(IlluminateQueryBuilder $query, array $variables): string |
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290 | { |
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291 | return $this->compileVariables($query, $variables); |
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292 | } |
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293 | |||
294 | |||
295 | /** |
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296 | * @param IlluminateQueryBuilder $query |
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297 | * @param array<string, mixed> $variables |
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298 | * @return string |
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299 | * |
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300 | * @SuppressWarnings("PHPMD.UnusedFormalParameter") |
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301 | */ |
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302 | protected function compileVariables(IlluminateQueryBuilder $query, array $variables): string |
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303 | { |
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304 | $aql = ''; |
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305 | |||
306 | foreach ($variables as $variable => $value) { |
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307 | if ($value instanceof Expression) { |
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308 | $value = $value->getValue($this); |
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309 | } |
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310 | |||
311 | $aql .= ' LET ' . $variable . ' = ' . $value; |
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312 | } |
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313 | |||
314 | return trim($aql); |
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315 | } |
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316 | |||
317 | /** |
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318 | * Compile the "order by" portions of the query. |
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319 | * |
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320 | * @param Builder $query |
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321 | * @param array<mixed> $orders |
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322 | * @param null|string $table |
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323 | * @return string |
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324 | */ |
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325 | protected function compileOrders(IlluminateQueryBuilder $query, $orders, $table = null) |
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326 | { |
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327 | if (!empty($orders)) { |
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328 | return 'SORT ' . implode(', ', $this->compileOrdersToArray($query, $orders, $table)); |
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329 | } |
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330 | |||
331 | return ''; |
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332 | } |
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333 | |||
334 | /** |
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335 | * Compile the query orders to an array. |
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336 | * |
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337 | * @param Builder $query |
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338 | * @param array<mixed> $orders |
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339 | * @param null|string $table |
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340 | * @return array<string> |
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341 | * @throws \Exception |
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342 | */ |
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343 | protected function compileOrdersToArray(IlluminateQueryBuilder $query, $orders, $table = null) |
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344 | { |
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345 | return array_map(function ($order) use ($query, $table) { |
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346 | $key = 'column'; |
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347 | if (array_key_exists('sql', $order)) { |
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348 | $key = 'sql'; |
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349 | } |
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350 | |||
351 | if (!$order[$key] instanceof Expression) { |
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352 | $order[$key] = $this->normalizeColumn($query, $order[$key], $table); |
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353 | } |
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354 | |||
355 | if ($order[$key] instanceof Expression) { |
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356 | $order[$key] = $order[$key]->getValue($this); |
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357 | } |
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358 | |||
359 | return array_key_exists('direction', $order) ? $order[$key] . ' ' . $order['direction'] : $order[$key]; |
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360 | }, $orders); |
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361 | } |
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362 | |||
363 | /** |
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364 | * Compile the "offset" portions of the query. |
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365 | * |
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366 | * @param \Illuminate\Database\Query\Builder $query |
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367 | * @param int $offset |
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368 | * @return string |
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369 | * |
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370 | * @SuppressWarnings("PHPMD.UnusedFormalParameter") |
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371 | */ |
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372 | protected function compileOffset(IlluminateQueryBuilder $query, $offset) |
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373 | { |
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374 | $this->offset = (int) $offset; |
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375 | |||
376 | return ""; |
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377 | } |
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378 | |||
379 | /** |
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380 | * Compile the "limit" portions of the query. |
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381 | * |
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382 | * @param \Illuminate\Database\Query\Builder $query |
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383 | * @param int $limit |
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384 | * @return string |
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385 | * |
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386 | * @SuppressWarnings("PHPMD.UnusedFormalParameter") |
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387 | */ |
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388 | protected function compileLimit(IlluminateQueryBuilder $query, $limit) |
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389 | { |
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390 | if ($this->offset !== null) { |
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391 | return "LIMIT " . (int) $this->offset . ", " . (int) $limit; |
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392 | } |
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393 | |||
394 | return "LIMIT " . (int) $limit; |
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395 | } |
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396 | |||
397 | /** |
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398 | * Compile the random statement into SQL. |
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399 | * |
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400 | * @param string|int|null $seed |
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401 | * @return string |
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402 | */ |
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403 | public function compileRandom($seed = null) |
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404 | { |
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405 | unset($seed); |
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406 | |||
407 | return "RAND()"; |
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408 | } |
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409 | |||
410 | /** |
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411 | * @param IlluminateQueryBuilder $query |
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412 | * @param array<mixed> $search |
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413 | * @return string |
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414 | * @throws \Exception |
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415 | */ |
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416 | public function compileSearch(IlluminateQueryBuilder $query, array $search) |
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431 | } |
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432 | |||
433 | /** |
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434 | * Get the value of a raw expression. |
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435 | * |
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436 | * @param bool|float|Expression|int|string|null $expression |
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437 | * @return bool|float|int|string|null |
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438 | */ |
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439 | public function getValue($expression) |
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440 | { |
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441 | if ($expression instanceof Expression) { |
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442 | return $expression->getValue($this); |
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443 | } |
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444 | |||
445 | return $expression; |
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446 | } |
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447 | |||
448 | /** |
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449 | * Get the grammar specific bit operators. |
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450 | * |
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451 | * @return array<string> |
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452 | */ |
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453 | public function getBitwiseOperators() |
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456 | } |
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457 | |||
458 | /** |
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459 | * Prepare the bindings for a delete statement. |
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460 | * |
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461 | * @param array<mixed> $bindings |
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462 | * @return array<mixed> |
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463 | */ |
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464 | public function prepareBindingsForDelete(array $bindings) |
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465 | { |
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466 | return Arr::collapse( |
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467 | Arr::except($bindings, 'select'), |
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468 | ); |
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469 | } |
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470 | |||
471 | /** |
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472 | * Determine if the given value is a raw expression. |
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473 | * |
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474 | * @param mixed $value |
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475 | * @return bool |
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476 | */ |
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477 | public function isExpression($value) |
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480 | } |
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481 | } |
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482 |