yajra /
laravel-datatables
Complex classes like QueryBuilderEngine 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. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
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 QueryBuilderEngine, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 19 | class QueryBuilderEngine extends BaseEngine |
||
| 20 | { |
||
| 21 | /** |
||
| 22 | * @param \Illuminate\Database\Query\Builder $builder |
||
| 23 | * @param \Yajra\Datatables\Request $request |
||
| 24 | */ |
||
| 25 | public function __construct(Builder $builder, Request $request) |
||
| 26 | { |
||
| 27 | $this->query = $builder; |
||
| 28 | $this->init($request, $builder); |
||
| 29 | } |
||
| 30 | |||
| 31 | /** |
||
| 32 | * Initialize attributes. |
||
| 33 | * |
||
| 34 | * @param \Yajra\Datatables\Request $request |
||
| 35 | * @param \Illuminate\Database\Query\Builder $builder |
||
| 36 | * @param string $type |
||
| 37 | */ |
||
| 38 | protected function init($request, $builder, $type = 'builder') |
||
|
Bug
introduced
by
|
|||
| 39 | { |
||
| 40 | $this->request = $request; |
||
| 41 | $this->query_type = $type; |
||
| 42 | $this->columns = $builder->columns; |
||
| 43 | $this->connection = $builder->getConnection(); |
||
| 44 | $this->prefix = $this->connection->getTablePrefix(); |
||
| 45 | $this->database = $this->connection->getDriverName(); |
||
| 46 | if ($this->isDebugging()) { |
||
| 47 | $this->connection->enableQueryLog(); |
||
| 48 | } |
||
| 49 | } |
||
| 50 | |||
| 51 | /** |
||
| 52 | * @inheritdoc |
||
| 53 | */ |
||
| 54 | public function filter(Closure $callback) |
||
| 55 | { |
||
| 56 | $this->overrideGlobalSearch($callback, $this->query); |
||
| 57 | |||
| 58 | return $this; |
||
| 59 | } |
||
| 60 | |||
| 61 | /** |
||
| 62 | * @inheritdoc |
||
| 63 | */ |
||
| 64 | public function make($mDataSupport = false, $orderFirst = false) |
||
| 65 | { |
||
| 66 | return parent::make($mDataSupport, $orderFirst); |
||
| 67 | } |
||
| 68 | |||
| 69 | /** |
||
| 70 | * @inheritdoc |
||
| 71 | */ |
||
| 72 | public function totalCount() |
||
| 73 | { |
||
| 74 | return $this->count(); |
||
| 75 | } |
||
| 76 | |||
| 77 | /** |
||
| 78 | * Counts current query. |
||
| 79 | * |
||
| 80 | * @return int |
||
| 81 | */ |
||
| 82 | public function count() |
||
| 83 | { |
||
| 84 | $myQuery = clone $this->query; |
||
| 85 | // if its a normal query ( no union, having and distinct word ) |
||
| 86 | // replace the select with static text to improve performance |
||
| 87 | if (! Str::contains(Str::lower($myQuery->toSql()), ['union', 'having', 'distinct', 'order by', 'group by'])) { |
||
| 88 | $row_count = $this->connection->getQueryGrammar()->wrap('row_count'); |
||
| 89 | $myQuery->select($this->connection->raw("'1' as {$row_count}")); |
||
| 90 | } |
||
| 91 | |||
| 92 | return $this->connection->table($this->connection->raw('(' . $myQuery->toSql() . ') count_row_table')) |
||
| 93 | ->setBindings($myQuery->getBindings())->count(); |
||
| 94 | } |
||
| 95 | |||
| 96 | /** |
||
| 97 | * Perform global search. |
||
| 98 | * |
||
| 99 | * @return void |
||
| 100 | */ |
||
| 101 | public function filtering() |
||
| 102 | { |
||
| 103 | $eagerLoads = $this->getEagerLoads(); |
||
| 104 | |||
| 105 | $this->query->where( |
||
| 106 | function ($query) use ($eagerLoads) { |
||
| 107 | $keyword = $this->setupKeyword($this->request->keyword()); |
||
| 108 | foreach ($this->request->searchableColumnIndex() as $index) { |
||
| 109 | $columnName = $this->getColumnName($index); |
||
| 110 | |||
| 111 | if (isset($this->columnDef['filter'][$columnName])) { |
||
| 112 | $method = Helper::getOrMethod($this->columnDef['filter'][$columnName]['method']); |
||
| 113 | $parameters = $this->columnDef['filter'][$columnName]['parameters']; |
||
| 114 | $this->compileColumnQuery( |
||
| 115 | $this->getQueryBuilder($query), |
||
| 116 | $method, |
||
| 117 | $parameters, |
||
| 118 | $columnName, |
||
| 119 | $keyword |
||
| 120 | ); |
||
| 121 | } else { |
||
| 122 | if (count(explode('.', $columnName)) > 1) { |
||
| 123 | $parts = explode('.', $columnName); |
||
| 124 | $relationColumn = array_pop($parts); |
||
| 125 | $relation = implode('.', $parts); |
||
| 126 | if (in_array($relation, $eagerLoads)) { |
||
| 127 | $this->compileRelationSearch( |
||
| 128 | $this->getQueryBuilder($query), |
||
| 129 | $relation, |
||
| 130 | $relationColumn, |
||
| 131 | $keyword |
||
| 132 | ); |
||
| 133 | } else { |
||
| 134 | $this->compileGlobalSearch($this->getQueryBuilder($query), $columnName, $keyword); |
||
| 135 | } |
||
| 136 | } else { |
||
| 137 | $this->compileGlobalSearch($this->getQueryBuilder($query), $columnName, $keyword); |
||
| 138 | } |
||
| 139 | } |
||
| 140 | |||
| 141 | $this->isFilterApplied = true; |
||
| 142 | } |
||
| 143 | } |
||
| 144 | ); |
||
| 145 | } |
||
| 146 | |||
| 147 | /** |
||
| 148 | * Get eager loads keys if eloquent. |
||
| 149 | * |
||
| 150 | * @return array |
||
| 151 | */ |
||
| 152 | private function getEagerLoads() |
||
| 153 | { |
||
| 154 | if ($this->query_type == 'eloquent') { |
||
| 155 | return array_keys($this->query->getEagerLoads()); |
||
| 156 | } |
||
| 157 | |||
| 158 | return []; |
||
| 159 | } |
||
| 160 | |||
| 161 | /** |
||
| 162 | * Perform filter column on selected field. |
||
| 163 | * |
||
| 164 | * @param mixed $query |
||
| 165 | * @param string $method |
||
| 166 | * @param mixed $parameters |
||
| 167 | * @param string $column |
||
| 168 | * @param string $keyword |
||
| 169 | */ |
||
| 170 | protected function compileColumnQuery($query, $method, $parameters, $column, $keyword) |
||
| 171 | { |
||
| 172 | if (method_exists($query, $method) |
||
| 173 | && count($parameters) <= with(new \ReflectionMethod($query, $method))->getNumberOfParameters() |
||
| 174 | ) { |
||
| 175 | if (Str::contains(Str::lower($method), 'raw') |
||
| 176 | || Str::contains(Str::lower($method), 'exists') |
||
| 177 | ) { |
||
| 178 | call_user_func_array( |
||
| 179 | [$query, $method], |
||
| 180 | $this->parameterize($parameters, $keyword) |
||
| 181 | ); |
||
| 182 | } else { |
||
| 183 | call_user_func_array( |
||
| 184 | [$query, $method], |
||
| 185 | $this->parameterize($column, $parameters, $keyword) |
||
| 186 | ); |
||
| 187 | } |
||
| 188 | } |
||
| 189 | } |
||
| 190 | |||
| 191 | /** |
||
| 192 | * Build Query Builder Parameters. |
||
| 193 | * |
||
| 194 | * @return array |
||
| 195 | */ |
||
| 196 | protected function parameterize() |
||
| 197 | { |
||
| 198 | $args = func_get_args(); |
||
| 199 | $keyword = count($args) > 2 ? $args[2] : $args[1]; |
||
| 200 | $parameters = Helper::buildParameters($args); |
||
| 201 | $parameters = Helper::replacePatternWithKeyword($parameters, $keyword, '$1'); |
||
| 202 | |||
| 203 | return $parameters; |
||
| 204 | } |
||
| 205 | |||
| 206 | /** |
||
| 207 | * Add relation query on global search. |
||
| 208 | * |
||
| 209 | * @param mixed $query |
||
| 210 | * @param string $relation |
||
| 211 | * @param string $column |
||
| 212 | * @param string $keyword |
||
| 213 | */ |
||
| 214 | protected function compileRelationSearch($query, $relation, $column, $keyword) |
||
| 215 | { |
||
| 216 | $myQuery = clone $this->query; |
||
| 217 | $myQuery->orWhereHas($relation, function ($q) use ($column, $keyword, $query) { |
||
| 218 | $sql = $q->select($this->connection->raw('count(1)')) |
||
| 219 | ->where($column, 'like', $keyword) |
||
| 220 | ->toSql(); |
||
| 221 | $sql = "($sql) >= 1"; |
||
| 222 | $query->orWhereRaw($sql, [$keyword]); |
||
| 223 | }); |
||
| 224 | } |
||
| 225 | |||
| 226 | /** |
||
| 227 | * Add a query on global search. |
||
| 228 | * |
||
| 229 | * @param mixed $query |
||
| 230 | * @param string $column |
||
| 231 | * @param string $keyword |
||
| 232 | */ |
||
| 233 | protected function compileGlobalSearch($query, $column, $keyword) |
||
| 244 | |||
| 245 | /** |
||
| 246 | * Wrap a column and cast in pgsql. |
||
| 247 | * |
||
| 248 | * @param string $column |
||
| 249 | * @return string |
||
| 250 | */ |
||
| 251 | public function castColumn($column) |
||
| 260 | |||
| 261 | /** |
||
| 262 | * Perform column search. |
||
| 263 | * |
||
| 264 | * @return void |
||
| 265 | */ |
||
| 266 | public function columnSearch() |
||
| 267 | { |
||
| 268 | $columns = $this->request->get('columns'); |
||
| 269 | for ($i = 0, $c = count($columns); $i < $c; $i++) { |
||
| 270 | if ($this->request->isColumnSearchable($i)) { |
||
| 271 | $column = $this->getColumnName($i); |
||
| 272 | $keyword = $this->getSearchKeyword($i); |
||
| 273 | |||
| 274 | if (isset($this->columnDef['filter'][$column])) { |
||
| 275 | $method = $this->columnDef['filter'][$column]['method']; |
||
| 276 | $parameters = $this->columnDef['filter'][$column]['parameters']; |
||
| 277 | $this->compileColumnQuery($this->getQueryBuilder(), $method, $parameters, $column, $keyword); |
||
| 278 | } else { |
||
| 279 | $column = $this->castColumn($column); |
||
| 280 | if ($this->isCaseInsensitive()) { |
||
| 281 | $this->compileColumnSearch($i, $column, $keyword, false); |
||
| 282 | } else { |
||
| 283 | $col = strstr($column, '(') ? $this->connection->raw($column) : $column; |
||
| 284 | $this->compileColumnSearch($i, $col, $keyword, true); |
||
| 285 | } |
||
| 286 | } |
||
| 287 | |||
| 288 | $this->isFilterApplied = true; |
||
| 289 | } |
||
| 290 | } |
||
| 291 | } |
||
| 292 | |||
| 293 | /** |
||
| 294 | * Get proper keyword to use for search. |
||
| 295 | * |
||
| 296 | * @param int $i |
||
| 297 | * @return string |
||
| 298 | */ |
||
| 299 | private function getSearchKeyword($i) |
||
| 307 | |||
| 308 | /** |
||
| 309 | * Compile queries for column search. |
||
| 310 | * |
||
| 311 | * @param int $i |
||
| 312 | * @param mixed $column |
||
| 313 | * @param string $keyword |
||
| 314 | * @param bool $caseSensitive |
||
| 315 | */ |
||
| 316 | protected function compileColumnSearch($i, $column, $keyword, $caseSensitive = true) |
||
| 326 | |||
| 327 | /** |
||
| 328 | * Compile regex query column search. |
||
| 329 | * |
||
| 330 | * @param mixed $column |
||
| 331 | * @param string $keyword |
||
| 332 | * @param bool $caseSensitive |
||
| 333 | */ |
||
| 334 | protected function regexColumnSearch($column, $keyword, $caseSensitive = true) |
||
| 344 | |||
| 345 | /** |
||
| 346 | * Check if the current sql language is based on oracle syntax. |
||
| 347 | * |
||
| 348 | * @return bool |
||
| 349 | */ |
||
| 350 | protected function isOracleSql() |
||
| 351 | { |
||
| 352 | return $this->database === 'oracle'; |
||
| 353 | } |
||
| 354 | |||
| 355 | /** |
||
| 356 | * Perform sorting of columns. |
||
| 357 | * |
||
| 358 | * @return void |
||
| 359 | */ |
||
| 360 | public function ordering() |
||
| 389 | |||
| 390 | /** |
||
| 391 | * Sort DataTables using eager load. |
||
| 392 | * |
||
| 393 | * @param string $column |
||
| 394 | * @param string $direction |
||
| 395 | */ |
||
| 396 | protected function orderByEagerLoad($column, $direction) |
||
| 421 | |||
| 422 | /** |
||
| 423 | * Perform pagination |
||
| 424 | * |
||
| 425 | * @return void |
||
| 426 | */ |
||
| 427 | public function paging() |
||
| 432 | |||
| 433 | /** |
||
| 434 | * Get results |
||
| 435 | * |
||
| 436 | * @return array|static[] |
||
| 437 | */ |
||
| 438 | public function results() |
||
| 442 | } |
||
| 443 |
Loading history...
