LaravelFreelancerNL /
laravel-arangodb
| Total Complexity | 46 |
| Total Lines | 536 |
| Duplicated Lines | 0 % |
| Changes | 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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| 16 | class Grammar extends FluentAqlGrammar |
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| 17 | { |
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| 18 | use Macroable; |
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| 19 | |||
| 20 | public $name; |
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| 21 | |||
| 22 | /** |
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| 23 | * The grammar table prefix. |
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| 24 | * |
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| 25 | * @var string |
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| 26 | */ |
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| 27 | protected $tablePrefix = ''; |
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| 28 | |||
| 29 | /** |
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| 30 | * The grammar table prefix. |
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| 31 | * |
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| 32 | * @var null|int |
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| 33 | */ |
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| 34 | protected $offset = null; |
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| 35 | |||
| 36 | /** |
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| 37 | * The components that make up a select clause. |
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| 38 | * |
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| 39 | * @var array |
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| 40 | */ |
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| 41 | protected $selectComponents = [ |
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| 42 | 'from', |
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| 43 | 'joins', |
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| 44 | 'wheres', |
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| 45 | 'groups', |
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| 46 | 'aggregate', |
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| 47 | 'havings', |
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| 48 | 'orders', |
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| 49 | 'offset', |
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| 50 | 'limit', |
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| 51 | 'columns', |
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| 52 | ]; |
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| 53 | |||
| 54 | protected $operatorTranslations = [ |
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| 55 | '=' => '==', |
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| 56 | '<>' => '!=', |
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| 57 | '<=>' => '==', |
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| 58 | 'rlike' => '=~', |
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| 59 | 'not rlike' => '!~', |
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| 60 | 'regexp' => '=~', |
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| 61 | 'not regexp' => '!~', |
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| 62 | ]; |
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| 63 | |||
| 64 | /** |
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| 65 | * Get the format for database stored dates. |
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| 66 | * |
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| 67 | * @return string |
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| 68 | */ |
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| 69 | public function getDateFormat() |
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| 72 | } |
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| 73 | |||
| 74 | /** |
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| 75 | * Get the grammar specific operators. |
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| 76 | * |
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| 77 | * @return array |
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| 78 | */ |
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| 79 | public function getOperators() |
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| 80 | { |
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| 81 | return $this->comparisonOperators; |
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| 82 | } |
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| 83 | |||
| 84 | /** |
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| 85 | * @param Builder $builder |
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| 86 | * @param $table |
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| 87 | * @param string $postfix |
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| 88 | * @return mixed |
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| 89 | */ |
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| 90 | protected function generateTableAlias($builder, $table, $postfix = 'Doc') |
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| 91 | { |
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| 92 | $builder->registerAlias($table, Str::singular($table).$postfix); |
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| 93 | |||
| 94 | return $builder; |
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| 95 | } |
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| 96 | |||
| 97 | protected function prefixTable($table) |
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| 98 | { |
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| 99 | return $this->tablePrefix.$table; |
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| 100 | } |
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| 101 | |||
| 102 | /** |
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| 103 | * Compile an insert statement into AQL. |
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| 104 | * |
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| 105 | * @param Builder $builder |
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| 106 | * @param array $values |
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| 107 | * @return Builder |
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| 108 | * @throws BindException |
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| 109 | */ |
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| 110 | public function compileInsert(Builder $builder, array $values) |
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| 111 | { |
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| 112 | if (! is_array(reset($values))) { |
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| 113 | $values = [$values]; |
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| 114 | } |
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| 115 | |||
| 116 | $table = $this->prefixTable($builder->from); |
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| 117 | |||
| 118 | if (empty($values)) { |
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| 119 | $builder->aqb = $builder->aqb->insert('{}', $table)->get(); |
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| 120 | |||
| 121 | return $builder; |
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| 122 | } |
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| 123 | |||
| 124 | $builder->aqb = $builder->aqb->let('docs', $builder->aqb->bind($values)) |
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| 125 | ->for('doc', 'docs') |
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| 126 | ->insert('doc', $table) |
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| 127 | ->return('NEW._key') |
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| 128 | ->get(); |
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| 129 | |||
| 130 | return $builder; |
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| 131 | } |
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| 132 | |||
| 133 | /** |
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| 134 | * Compile an insert and get ID statement into SQL. |
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| 135 | * |
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| 136 | * @param Builder $builder |
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| 137 | * @param array $values |
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| 138 | * @return Builder |
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| 139 | * @throws BindException |
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| 140 | */ |
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| 141 | public function compileInsertGetId(Builder $builder, $values) |
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| 142 | { |
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| 143 | return $this->compileInsert($builder, $values); |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * Compile a select query into AQL. |
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| 148 | * |
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| 149 | * @param Builder $builder |
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| 150 | * @return Builder |
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| 151 | */ |
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| 152 | public function compileSelect(Builder $builder) |
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| 153 | { |
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| 154 | // if ($builder->unions && $builder->aggregate) { |
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| 155 | // return $this->compileUnionAggregate($builder); |
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| 156 | // } |
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| 157 | |||
| 158 | // To compile the query, we'll spin through each component of the query and |
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| 159 | // see if that component exists. If it does we'll just call the compiler |
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| 160 | // function for the component which is responsible for making the SQL. |
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| 161 | |||
| 162 | $builder = $this->compileComponents($builder); |
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| 163 | |||
| 164 | // if ($builder->unions) { |
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| 165 | // $sql = $this->wrapUnion($sql).' '.$this->compileUnions($builder); |
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| 166 | // } |
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| 167 | |||
| 168 | $builder->aqb = $builder->aqb->get(); |
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| 169 | |||
| 170 | return $builder; |
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| 171 | } |
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| 172 | |||
| 173 | /** |
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| 174 | * Compile the components necessary for a select clause. |
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| 175 | * |
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| 176 | * @param Builder $builder |
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| 177 | * @return Builder |
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| 178 | */ |
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| 179 | protected function compileComponents(Builder $builder) |
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| 180 | { |
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| 181 | foreach ($this->selectComponents as $component) { |
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| 182 | // To compile the query, we'll spin through each component of the query and |
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| 183 | // see if that component exists. If it does we'll just call the compiler |
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| 184 | // function for the component which is responsible for making the SQL. |
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| 185 | |||
| 186 | if (isset($builder->$component) && ! is_null($builder->$component)) { |
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| 187 | $method = 'compile'.ucfirst($component); |
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| 188 | |||
| 189 | $builder = $this->$method($builder, $builder->$component); |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | return $builder; |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 197 | * Compile the "from" portion of the query -> FOR in AQL. |
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| 198 | * |
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| 199 | * @param Builder $builder |
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| 200 | * @param string $table |
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| 201 | * @return Builder |
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| 202 | */ |
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| 203 | protected function compileFrom(Builder $builder, $table) |
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| 204 | { |
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| 205 | $table = $this->prefixTable($table); |
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| 206 | $builder = $this->generateTableAlias($builder, $table); |
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| 207 | $tableAlias = $builder->getAlias($table); |
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| 208 | |||
| 209 | $builder->aqb = $builder->aqb->for($tableAlias, $table); |
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| 210 | |||
| 211 | return $builder; |
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| 212 | } |
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| 213 | |||
| 214 | /** |
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| 215 | * Compile the "where" portions of the query. |
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| 216 | * |
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| 217 | * @param Builder $builder |
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| 218 | * @return Builder |
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| 219 | */ |
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| 220 | protected function compileWheres(Builder $builder) |
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| 221 | { |
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| 222 | // Each type of where clauses has its own compiler function which is responsible |
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| 223 | // for actually creating the where clauses SQL. This helps keep the code nice |
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| 224 | // and maintainable since each clause has a very small method that it uses. |
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| 225 | if (is_null($builder->wheres)) { |
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|
introduced
by
|
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| 226 | return $builder; |
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| 227 | } |
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| 228 | |||
| 229 | if (count($predicates = $this->compileWheresToArray($builder)) > 0) { |
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| 230 | $builder->aqb = $builder->aqb->filter($predicates); |
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| 231 | |||
| 232 | return $builder; |
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| 233 | } |
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| 234 | |||
| 235 | return $builder; |
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| 236 | } |
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| 237 | |||
| 238 | /** |
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| 239 | * Get an array of all the where clauses for the query. |
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| 240 | * |
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| 241 | * @param \Illuminate\Database\Query\Builder $builder |
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| 242 | * @return array |
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| 243 | */ |
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| 244 | protected function compileWheresToArray($builder) |
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| 245 | { |
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| 246 | $result = collect($builder->wheres)->map(function ($where) use ($builder) { |
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| 247 | // ArangoDB uses a double '=' for comparison |
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| 248 | if ($where['operator'] == '=') { |
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| 249 | $where['operator'] = '=='; |
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| 250 | } |
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| 251 | $where['operator'] = $this->translateOperator($where['operator']); |
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| 252 | |||
| 253 | //Prefix table alias on the column |
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| 254 | $where['column'] = $this->prefixAlias($builder, $builder->from, $where['column']); |
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| 255 | |||
| 256 | return [ |
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| 257 | $where['column'], |
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| 258 | $where['operator'], |
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| 259 | $where['value'], |
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| 260 | $where['boolean'], |
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| 261 | ]; |
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| 262 | })->all(); |
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| 263 | |||
| 264 | return $result; |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * Compile an aggregated select clause. |
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| 269 | * |
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| 270 | * @param Builder $builder |
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| 271 | * @param array $aggregate |
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| 272 | * @return Builder |
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| 273 | */ |
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| 274 | protected function compileAggregate(Builder $builder, $aggregate) |
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| 275 | { |
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| 276 | $method = 'compile'.ucfirst($aggregate['function']); |
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| 277 | |||
| 278 | return $this->$method($builder, $aggregate); |
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| 279 | } |
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| 280 | |||
| 281 | /** |
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| 282 | * Compile AQL for count aggregate. |
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| 283 | * @param Builder $builder |
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| 284 | * @param $aggregate |
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| 285 | * @return Builder |
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| 286 | */ |
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| 287 | protected function compileCount(Builder $builder, $aggregate) |
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| 288 | { |
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| 289 | $builder->aqb = $builder->aqb->collect()->withCount('aggregateResult'); |
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| 290 | |||
| 291 | return $builder; |
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| 292 | } |
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| 293 | |||
| 294 | /** |
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| 295 | * Compile AQL for max aggregate. |
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| 296 | * |
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| 297 | * @param Builder $builder |
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| 298 | * @param $aggregate |
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| 299 | * @return Builder |
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| 300 | */ |
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| 301 | protected function compileMax(Builder $builder, $aggregate) |
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| 302 | { |
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| 303 | $column = $this->prefixAlias($builder, $builder->from, $aggregate['columns'][0]); |
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| 304 | |||
| 305 | $builder->aqb = $builder->aqb->collect()->aggregate('aggregateResult', $builder->aqb->max($column)); |
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| 306 | |||
| 307 | return $builder; |
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| 308 | } |
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| 309 | |||
| 310 | /** |
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| 311 | * Compile AQL for min aggregate. |
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| 312 | * |
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| 313 | * @param Builder $builder |
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| 314 | * @param $aggregate |
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| 315 | * @return Builder |
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| 316 | */ |
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| 317 | protected function compileMin(Builder $builder, $aggregate) |
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| 318 | { |
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| 319 | $column = $this->prefixAlias($builder, $builder->from, $aggregate['columns'][0]); |
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| 320 | |||
| 321 | $builder->aqb = $builder->aqb->collect()->aggregate('aggregateResult', $builder->aqb->min($column)); |
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| 322 | |||
| 323 | return $builder; |
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| 324 | } |
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| 325 | |||
| 326 | /** |
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| 327 | * Compile AQL for average aggregate. |
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| 328 | * |
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| 329 | * @param Builder $builder |
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| 330 | * @param $aggregate |
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| 331 | * @return Builder |
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| 332 | */ |
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| 333 | protected function compileAvg(Builder $builder, $aggregate) |
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| 334 | { |
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| 335 | $column = $this->prefixAlias($builder, $builder->from, $aggregate['columns'][0]); |
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| 336 | |||
| 337 | $builder->aqb = $builder->aqb->collect()->aggregate('aggregateResult', $builder->aqb->average($column)); |
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| 338 | |||
| 339 | return $builder; |
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| 340 | } |
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| 341 | |||
| 342 | /** |
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| 343 | * Compile AQL for sum aggregate. |
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| 344 | * |
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| 345 | * @param Builder $builder |
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| 346 | * @param $aggregate |
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| 347 | * @return Builder |
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| 348 | */ |
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| 349 | protected function compileSum(Builder $builder, $aggregate) |
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| 350 | { |
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| 351 | $column = $this->prefixAlias($builder, $builder->from, $aggregate['columns'][0]); |
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| 352 | |||
| 353 | $builder->aqb = $builder->aqb->collect()->aggregate('aggregateResult', $builder->aqb->sum($column)); |
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| 354 | |||
| 355 | return $builder; |
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| 356 | } |
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| 357 | |||
| 358 | /** |
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| 359 | * Compile the "order by" portions of the query. |
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| 360 | * |
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| 361 | * @param Builder $builder |
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| 362 | * @param array $orders |
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| 363 | * @return Builder |
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| 364 | */ |
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| 365 | protected function compileOrders(Builder $builder, $orders) |
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| 366 | { |
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| 367 | if (! empty($orders)) { |
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| 368 | $builder->aqb = $builder->aqb->sort($this->compileOrdersToArray($builder, $orders)); |
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| 369 | |||
| 370 | return $builder; |
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| 371 | } |
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| 372 | |||
| 373 | return $builder; |
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| 374 | } |
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| 375 | |||
| 376 | /** |
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| 377 | * Compile the query orders to an array. |
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| 378 | * |
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| 379 | * @param Builder $builder |
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| 380 | * @param array $orders |
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| 381 | * @return array |
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| 382 | */ |
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| 383 | protected function compileOrdersToArray(Builder $builder, $orders) |
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| 384 | { |
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| 385 | |||
| 386 | return array_map(function ($order) use ($builder) { |
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| 387 | |||
| 388 | if (! isset($order['type']) || $order['type'] != 'Raw') { |
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| 389 | $order['column'] = $this->prefixAlias($builder, $builder->from, $order['column']); |
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| 390 | } |
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| 391 | unset($order['type']); |
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| 392 | return array_values($order); |
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| 393 | }, $orders); |
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| 394 | } |
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| 395 | |||
| 396 | /** |
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| 397 | * Compile the "offset" portions of the query. |
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| 398 | * We are handling this first by saving the offset which will be used by the FluentAQL's limit function. |
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| 399 | * |
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| 400 | * @param Builder $builder |
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| 401 | * @param int $offset |
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| 402 | * @return Builder |
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| 403 | */ |
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| 404 | protected function compileOffset(Builder $builder, $offset) |
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| 405 | { |
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| 406 | $this->offset = (int) $offset; |
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| 407 | |||
| 408 | return $builder; |
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| 409 | } |
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| 410 | |||
| 411 | /** |
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| 412 | * Compile the "limit" portions of the query. |
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| 413 | * |
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| 414 | * @param Builder $builder |
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| 415 | * @param int $limit |
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| 416 | * @return Builder |
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| 417 | */ |
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| 418 | protected function compileLimit(Builder $builder, $limit) |
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| 419 | { |
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| 420 | if ($this->offset !== null) { |
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| 421 | $builder->aqb = $builder->aqb->limit((int) $this->offset, (int) $limit); |
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| 422 | |||
| 423 | return $builder; |
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| 424 | } |
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| 425 | $builder->aqb = $builder->aqb->limit((int) $limit); |
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| 426 | |||
| 427 | return $builder; |
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| 428 | } |
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| 429 | |||
| 430 | /** |
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| 431 | * Compile the "RETURN" portion of the query. |
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| 432 | * |
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| 433 | * @param Builder $builder |
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| 434 | * @param array $columns |
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| 435 | * @return Builder |
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| 436 | */ |
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| 437 | protected function compileColumns(Builder $builder, array $columns) : Builder |
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| 438 | { |
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| 439 | // If the query is actually performing an aggregating select, we will let that |
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| 440 | // compiler handle the building of the select clauses, as it will need some |
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| 441 | // more syntax that is best handled by that function to keep things neat. |
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| 442 | // if (! is_null($builder->aggregate)) { |
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| 443 | // return; |
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| 444 | // } |
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| 445 | |||
| 446 | $values = []; |
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| 447 | |||
| 448 | $doc = $builder->getAlias($builder->from); |
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| 449 | foreach ($columns as $column) { |
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| 450 | if ($column != null && $column != '*') { |
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| 451 | $values[$column] = $doc.'.'.$column; |
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| 452 | } |
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| 453 | } |
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| 454 | if ($builder->aggregate !== null) { |
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| 455 | $values = 'aggregateResult'; |
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| 456 | } |
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| 457 | if (empty($values)) { |
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| 458 | $values = $doc; |
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| 459 | } |
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| 460 | |||
| 461 | $builder->aqb = $builder->aqb->return($values, (bool) $builder->distinct); |
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| 462 | |||
| 463 | return $builder; |
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| 464 | } |
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| 465 | |||
| 466 | /** |
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| 467 | * Compile an update statement into SQL. |
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| 468 | * |
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| 469 | * @param Builder $builder |
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| 470 | * @param array $values |
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| 471 | * @return Builder |
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| 472 | */ |
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| 473 | public function compileUpdate(Builder $builder, array $values) |
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| 486 | } |
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| 487 | |||
| 488 | /** |
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| 489 | * Compile a delete statement into SQL. |
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| 490 | * |
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| 491 | * @param Builder $builder |
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| 492 | * @param null $_key |
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| 493 | * @return Builder |
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| 494 | */ |
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| 495 | public function compileDelete(Builder $builder, $_key = null) |
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| 515 | } |
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| 516 | |||
| 517 | /** |
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| 518 | * Compile the random statement into SQL. |
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| 519 | * |
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| 520 | * @param Builder $builder |
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| 521 | * @return FunctionExpression; |
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| 522 | */ |
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| 523 | public function compileRandom(Builder $builder) |
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| 524 | { |
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| 525 | return $builder->aqb->rand(); |
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| 526 | } |
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| 527 | |||
| 528 | /** |
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| 529 | * Translate sql operators to their AQL equivalent where possible. |
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| 530 | * |
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| 531 | * @param string $operator |
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| 532 | * @return mixed|string |
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| 533 | */ |
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| 534 | private function translateOperator(string $operator) |
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| 541 | } |
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| 542 | |||
| 543 | /** |
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| 544 | * @param Builder $builder |
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| 545 | * @param string $target |
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| 546 | * @param string $value |
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| 547 | * @return Builder |
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| 548 | */ |
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| 549 | protected function prefixAlias(Builder $builder, string $target, string $value) : string |
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| 552 | } |
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| 553 | } |
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| 554 |
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