| Total Complexity | 103 |
| Total Lines | 570 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like AbstractDQLQueryBuilder 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 AbstractDQLQueryBuilder, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 41 | abstract class AbstractDQLQueryBuilder implements DQLQueryBuilderInterface |
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| 42 | { |
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| 43 | protected string $separator = ' '; |
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| 44 | |||
| 45 | /** |
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| 46 | * @var array map of condition aliases to condition classes. For example: |
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| 47 | * |
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| 48 | * ```php |
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| 49 | * return [ |
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| 50 | * 'LIKE' => \Yiisoft\Db\Condition\LikeCondition::class, |
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| 51 | * ]; |
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| 52 | * ``` |
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| 53 | * |
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| 54 | * This property is used by {@see createConditionFromArray} method. |
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| 55 | * See default condition classes list in {@see defaultConditionClasses()} method. |
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| 56 | * |
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| 57 | * In case you want to add custom conditions support, use the {@see setConditionClasses()} method. |
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| 58 | * |
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| 59 | * @see setConditonClasses() |
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| 60 | * @see defaultConditionClasses() |
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| 61 | */ |
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| 62 | protected array $conditionClasses = []; |
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| 63 | |||
| 64 | /** |
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| 65 | * @psalm-var array<string, class-string<ExpressionBuilderInterface>> maps expression class to expression builder |
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| 66 | * class. |
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| 67 | * |
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| 68 | * For example: |
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| 69 | * |
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| 70 | * ```php |
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| 71 | * [ |
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| 72 | * Expression::class => ExpressionBuilder::class |
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| 73 | * ] |
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| 74 | * ``` |
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| 75 | * This property is mainly used by {@see buildExpression()} to build SQL expressions form expression objects. |
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| 76 | * See default values in {@see defaultExpressionBuilders()} method. |
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| 77 | * |
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| 78 | * {@see setExpressionBuilders()} |
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| 79 | * {@see defaultExpressionBuilders()} |
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| 80 | */ |
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| 81 | protected array $expressionBuilders = []; |
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| 82 | |||
| 83 | public function __construct( |
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| 84 | private QueryBuilderInterface $queryBuilder, |
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| 85 | private QuoterInterface $quoter, |
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| 86 | private SchemaInterface $schema |
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| 87 | ) { |
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| 88 | $this->expressionBuilders = $this->defaultExpressionBuilders(); |
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| 89 | $this->conditionClasses = $this->defaultConditionClasses(); |
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| 90 | } |
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| 91 | |||
| 92 | public function build(QueryInterface $query, array $params = []): array |
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| 93 | { |
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| 94 | $query = $query->prepare($this->queryBuilder); |
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| 95 | $params = empty($params) ? $query->getParams() : array_merge($params, $query->getParams()); |
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| 96 | $clauses = [ |
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| 97 | $this->buildSelect($query->getSelect(), $params, $query->getDistinct(), $query->getSelectOption()), |
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| 98 | $this->buildFrom($query->getFrom(), $params), |
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| 99 | $this->buildJoin($query->getJoin(), $params), |
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| 100 | $this->buildWhere($query->getWhere(), $params), |
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| 101 | $this->buildGroupBy($query->getGroupBy(), $params), |
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| 102 | $this->buildHaving($query->getHaving(), $params), |
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| 103 | ]; |
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| 104 | $sql = implode($this->separator, array_filter($clauses)); |
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| 105 | $sql = $this->buildOrderByAndLimit($sql, $query->getOrderBy(), $query->getLimit(), $query->getOffset()); |
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| 106 | |||
| 107 | if (!empty($query->getOrderBy())) { |
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| 108 | /** @psalm-var array<string, ExpressionInterface|string> */ |
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| 109 | foreach ($query->getOrderBy() as $expression) { |
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| 110 | if ($expression instanceof ExpressionInterface) { |
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| 111 | $this->buildExpression($expression, $params); |
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| 112 | } |
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| 113 | } |
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| 114 | } |
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| 115 | |||
| 116 | if (!empty($query->getGroupBy())) { |
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| 117 | /** @psalm-var array<string, ExpressionInterface|string> */ |
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| 118 | foreach ($query->getGroupBy() as $expression) { |
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| 119 | if ($expression instanceof ExpressionInterface) { |
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| 120 | $this->buildExpression($expression, $params); |
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| 121 | } |
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| 122 | } |
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| 123 | } |
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| 124 | |||
| 125 | $union = $this->buildUnion($query->getUnion(), $params); |
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| 126 | |||
| 127 | if ($union !== '') { |
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| 128 | $sql = "($sql)$this->separator$union"; |
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| 129 | } |
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| 130 | |||
| 131 | $with = $this->buildWithQueries($query->getWithQueries(), $params); |
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| 132 | |||
| 133 | if ($with !== '') { |
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| 134 | $sql = "$with$this->separator$sql"; |
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| 135 | } |
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| 136 | |||
| 137 | return [$sql, $params]; |
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| 138 | } |
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| 139 | |||
| 140 | public function buildColumns(array|string $columns): string |
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| 141 | { |
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| 142 | if (!is_array($columns)) { |
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|
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| 143 | if (str_contains($columns, '(')) { |
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| 144 | return $columns; |
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| 145 | } |
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| 146 | |||
| 147 | $rawColumns = $columns; |
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| 148 | $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY); |
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| 149 | |||
| 150 | if ($columns === false) { |
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| 151 | throw new InvalidArgumentException("$rawColumns is not valid columns."); |
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| 152 | } |
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| 153 | } |
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| 154 | |||
| 155 | /** @psalm-var array<array-key, ExpressionInterface|string> $columns */ |
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| 156 | foreach ($columns as $i => $column) { |
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| 157 | if ($column instanceof ExpressionInterface) { |
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| 158 | $columns[$i] = $this->buildExpression($column); |
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| 159 | } elseif (!str_contains($column, '(')) { |
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| 160 | $columns[$i] = $this->quoter->quoteColumnName($column); |
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| 161 | } |
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| 162 | } |
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| 163 | |||
| 164 | /** @psalm-var string[] $columns */ |
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| 165 | return implode(', ', $columns); |
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| 166 | } |
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| 167 | |||
| 168 | public function buildCondition(array|string|ExpressionInterface|null $condition, array &$params = []): string |
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| 169 | { |
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| 170 | if (is_array($condition)) { |
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| 171 | if (empty($condition)) { |
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| 172 | return ''; |
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| 173 | } |
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| 174 | |||
| 175 | $condition = $this->createConditionFromArray($condition); |
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| 176 | } |
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| 177 | |||
| 178 | if ($condition instanceof ExpressionInterface) { |
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| 179 | return $this->buildExpression($condition, $params); |
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| 180 | } |
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| 181 | |||
| 182 | return $condition ?? ''; |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * @throws InvalidArgumentException |
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| 187 | * |
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| 188 | * @psalm-suppress UndefinedInterfaceMethod |
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| 189 | * @psalm-suppress MixedMethodCall |
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| 190 | */ |
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| 191 | public function buildExpression(ExpressionInterface $expression, array &$params = []): string |
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| 192 | { |
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| 193 | $builder = $this->queryBuilder->getExpressionBuilder($expression); |
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| 194 | return (string) $builder->build($expression, $params); |
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| 195 | } |
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| 196 | |||
| 197 | public function buildFrom(array|null $tables, array &$params): string |
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| 207 | } |
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| 208 | |||
| 209 | public function buildGroupBy(array $columns, array &$params = []): string |
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| 210 | { |
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| 211 | if (empty($columns)) { |
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| 212 | return ''; |
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| 213 | } |
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| 214 | |||
| 215 | /** @psalm-var array<string, Expression|string> $columns */ |
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| 216 | foreach ($columns as $i => $column) { |
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| 217 | if ($column instanceof Expression) { |
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| 218 | $columns[$i] = $this->buildExpression($column); |
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| 219 | $params = array_merge($params, $column->getParams()); |
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| 220 | } elseif (!str_contains($column, '(')) { |
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| 221 | $columns[$i] = $this->quoter->quoteColumnName($column); |
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| 222 | } |
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| 223 | } |
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| 224 | |||
| 225 | return 'GROUP BY ' . implode(', ', $columns); |
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| 226 | } |
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| 227 | |||
| 228 | public function buildHaving(array|ExpressionInterface|string|null $condition, array &$params = []): string |
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| 229 | { |
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| 230 | $having = $this->buildCondition($condition, $params); |
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| 231 | |||
| 232 | return ($having === '') ? '' : ('HAVING ' . $having); |
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| 233 | } |
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| 234 | |||
| 235 | public function buildJoin(array $joins, array &$params): string |
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| 236 | { |
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| 237 | if (empty($joins)) { |
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| 238 | return ''; |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * @psalm-var array< |
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| 243 | * array-key, |
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| 244 | * array{ |
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| 245 | * 0?:string, |
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| 246 | * 1?:array<array-key, Query|string>|string, |
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| 247 | * 2?:array|ExpressionInterface|string|null |
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| 248 | * }|null |
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| 249 | * > $joins |
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| 250 | */ |
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| 251 | foreach ($joins as $i => $join) { |
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| 252 | if (!is_array($join) || !isset($join[0], $join[1])) { |
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| 253 | throw new Exception( |
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| 254 | 'A join clause must be specified as an array of join type, join table, and optionally join ' |
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| 255 | . 'condition.' |
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| 256 | ); |
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| 257 | } |
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| 258 | |||
| 259 | /* 0:join type, 1:join table, 2:on-condition (optional) */ |
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| 260 | [$joinType, $table] = $join; |
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| 261 | |||
| 262 | $tables = $this->quoteTableNames((array) $table, $params); |
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| 263 | |||
| 264 | /** @var string $table */ |
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| 265 | $table = reset($tables); |
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| 266 | $joins[$i] = "$joinType $table"; |
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| 267 | |||
| 268 | if (isset($join[2])) { |
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| 269 | $condition = $this->buildCondition($join[2], $params); |
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| 270 | if ($condition !== '') { |
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| 271 | $joins[$i] .= ' ON ' . $condition; |
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| 272 | } |
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| 273 | } |
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| 274 | } |
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| 275 | |||
| 276 | /** @psalm-var array<string> $joins */ |
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| 277 | return implode($this->separator, $joins); |
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| 278 | } |
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| 279 | |||
| 280 | public function buildLimit(Expression|int|null $limit, Expression|int|null $offset): string |
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| 281 | { |
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| 282 | $sql = ''; |
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| 283 | |||
| 284 | if ($this->hasLimit($limit)) { |
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| 285 | $sql = 'LIMIT ' . (string) $limit; |
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| 286 | } |
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| 287 | |||
| 288 | if ($this->hasOffset($offset)) { |
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| 289 | $sql .= ' OFFSET ' . (string) $offset; |
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| 290 | } |
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| 291 | |||
| 292 | return ltrim($sql); |
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| 293 | } |
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| 294 | |||
| 295 | public function buildOrderBy(array $columns, array &$params = []): string |
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| 296 | { |
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| 297 | if (empty($columns)) { |
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| 298 | return ''; |
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| 299 | } |
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| 300 | |||
| 301 | $orders = []; |
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| 302 | |||
| 303 | /** @psalm-var array<string, Expression|int|string> $columns */ |
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| 304 | foreach ($columns as $name => $direction) { |
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| 305 | if ($direction instanceof Expression) { |
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| 306 | $orders[] = $this->buildExpression($direction); |
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| 307 | $params = array_merge($params, $direction->getParams()); |
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| 308 | } else { |
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| 309 | $orders[] = $this->quoter->quoteColumnName($name) . ($direction === SORT_DESC ? ' DESC' : ''); |
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| 310 | } |
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| 311 | } |
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| 312 | |||
| 313 | return 'ORDER BY ' . implode(', ', $orders); |
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| 314 | } |
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| 315 | |||
| 316 | public function buildOrderByAndLimit( |
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| 317 | string $sql, |
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| 318 | array $orderBy, |
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| 319 | Expression|int|null $limit, |
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| 320 | Expression|int|null $offset, |
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| 321 | array &$params = [] |
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| 322 | ): string { |
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| 323 | $orderBy = $this->buildOrderBy($orderBy, $params); |
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| 324 | if ($orderBy !== '') { |
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| 325 | $sql .= $this->separator . $orderBy; |
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| 326 | } |
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| 327 | $limit = $this->buildLimit($limit, $offset); |
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| 328 | if ($limit !== '') { |
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| 329 | $sql .= $this->separator . $limit; |
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| 330 | } |
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| 331 | |||
| 332 | return $sql; |
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| 333 | } |
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| 334 | |||
| 335 | public function buildSelect( |
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| 336 | array $columns, |
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| 337 | array &$params, |
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| 338 | bool|null $distinct = false, |
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| 339 | string $selectOption = null |
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| 340 | ): string { |
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| 341 | $select = $distinct ? 'SELECT DISTINCT' : 'SELECT'; |
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| 342 | |||
| 343 | if ($selectOption !== null) { |
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| 344 | $select .= ' ' . $selectOption; |
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| 345 | } |
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| 346 | |||
| 347 | if (empty($columns)) { |
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| 348 | return $select . ' *'; |
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| 349 | } |
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| 350 | |||
| 351 | /** @psalm-var array<array-key, ExpressionInterface|string> $columns */ |
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| 352 | foreach ($columns as $i => $column) { |
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| 353 | if ($column instanceof ExpressionInterface) { |
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| 354 | if (is_int($i)) { |
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| 355 | $columns[$i] = $this->buildExpression($column, $params); |
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| 356 | } else { |
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| 357 | $columns[$i] = $this->buildExpression($column, $params) . ' AS ' |
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| 358 | . $this->quoter->quoteColumnName($i); |
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| 359 | } |
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| 360 | } elseif (is_string($i) && $i !== $column) { |
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| 361 | if (!str_contains($column, '(')) { |
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| 362 | $column = $this->quoter->quoteColumnName($column); |
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| 363 | } |
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| 364 | $columns[$i] = "$column AS " . $this->quoter->quoteColumnName($i); |
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| 365 | } elseif (!str_contains($column, '(')) { |
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| 366 | if (preg_match('/^(.*?)(?i:\s+as\s+|\s+)([\w\-_.]+)$/', $column, $matches)) { |
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| 367 | $columns[$i] = $this->quoter->quoteColumnName($matches[1]) |
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| 368 | . ' AS ' . $this->quoter->quoteColumnName($matches[2]); |
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| 369 | } else { |
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| 370 | $columns[$i] = $this->quoter->quoteColumnName($column); |
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| 371 | } |
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| 372 | } |
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| 373 | } |
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| 374 | |||
| 375 | return $select . ' ' . implode(', ', $columns); |
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| 376 | } |
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| 377 | |||
| 378 | public function buildUnion(array $unions, array &$params): string |
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| 379 | { |
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| 380 | if (empty($unions)) { |
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| 381 | return ''; |
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| 382 | } |
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| 383 | |||
| 384 | $result = ''; |
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| 385 | |||
| 386 | /** @psalm-var array<array{query:Query|string, all:bool}> $unions */ |
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| 387 | foreach ($unions as $i => $union) { |
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| 388 | $query = $union['query']; |
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| 389 | if ($query instanceof QueryInterface) { |
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| 390 | [$unions[$i]['query'], $params] = $this->build($query, $params); |
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| 391 | } |
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| 392 | |||
| 393 | $result .= 'UNION ' . ($union['all'] ? 'ALL ' : '') . '( ' . $unions[$i]['query'] . ' ) '; |
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| 394 | } |
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| 395 | |||
| 396 | return trim($result); |
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| 397 | } |
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| 398 | |||
| 399 | public function buildWhere( |
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| 400 | array|string|ConditionInterface|ExpressionInterface|null $condition, |
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| 401 | array &$params = [] |
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| 402 | ): string { |
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| 403 | $where = $this->buildCondition($condition, $params); |
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| 404 | return ($where === '') ? '' : ('WHERE ' . $where); |
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| 405 | } |
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| 406 | |||
| 407 | public function buildWithQueries(array $withs, array &$params): string |
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| 408 | { |
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| 409 | if (empty($withs)) { |
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| 410 | return ''; |
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| 411 | } |
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| 412 | |||
| 413 | $recursive = false; |
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| 414 | $result = []; |
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| 415 | |||
| 416 | /** @psalm-var array<array-key, array{query:string|Query, alias:string, recursive:bool}> $withs */ |
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| 417 | foreach ($withs as $with) { |
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| 418 | if ($with['recursive']) { |
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| 419 | $recursive = true; |
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| 420 | } |
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| 421 | |||
| 422 | $query = $with['query']; |
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| 423 | if ($query instanceof QueryInterface) { |
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| 424 | [$with['query'], $params] = $this->build($query, $params); |
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| 425 | } |
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| 426 | |||
| 427 | $result[] = $with['alias'] . ' AS (' . $with['query'] . ')'; |
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| 428 | } |
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| 429 | |||
| 430 | return 'WITH ' . ($recursive ? 'RECURSIVE ' : '') . implode(', ', $result); |
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| 431 | } |
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| 432 | |||
| 433 | public function createConditionFromArray(array $condition): ConditionInterface |
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| 434 | { |
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| 435 | /** operator format: operator, operand 1, operand 2, ... */ |
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| 436 | if (isset($condition[0])) { |
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| 437 | $operator = strtoupper((string) array_shift($condition)); |
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| 438 | |||
| 439 | /** @var string $className */ |
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| 440 | $className = $this->conditionClasses[$operator] ?? SimpleCondition::class; |
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| 441 | |||
| 442 | /** @var ConditionInterface $className */ |
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| 443 | return $className::fromArrayDefinition($operator, $condition); |
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| 444 | } |
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| 445 | |||
| 446 | /** hash format: 'column1' => 'value1', 'column2' => 'value2', ... */ |
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| 447 | return new HashCondition($condition); |
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| 448 | } |
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| 449 | |||
| 450 | public function getExpressionBuilder(ExpressionInterface $expression): object |
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| 451 | { |
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| 452 | $className = $expression::class; |
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| 453 | |||
| 454 | if (!isset($this->expressionBuilders[$className])) { |
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| 455 | throw new InvalidArgumentException( |
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| 456 | 'Expression of class ' . $className . ' can not be built in ' . static::class |
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| 457 | ); |
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| 458 | } |
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| 459 | |||
| 460 | return new $this->expressionBuilders[$className]($this->queryBuilder); |
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| 461 | } |
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| 462 | |||
| 463 | public function selectExists(string $rawSql): string |
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| 464 | { |
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| 465 | return 'SELECT EXISTS(' . $rawSql . ')'; |
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| 466 | } |
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| 467 | |||
| 468 | public function setConditionClasses(array $classes): void |
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| 469 | { |
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| 470 | $this->conditionClasses = array_merge($this->conditionClasses, $classes); |
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| 471 | } |
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| 472 | |||
| 473 | public function setExpressionBuilders(array $builders): void |
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| 474 | { |
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| 475 | $this->expressionBuilders = array_merge($this->expressionBuilders, $builders); |
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| 476 | } |
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| 477 | |||
| 478 | /** |
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| 479 | * @param string the separator between different fragments of a SQL statement. |
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| 480 | * |
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| 481 | * Defaults to an empty space. This is mainly used by {@see build()} when generating a SQL statement. |
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| 482 | */ |
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| 483 | public function setSeparator(string $separator): void |
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| 484 | { |
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| 485 | $this->separator = $separator; |
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| 486 | } |
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| 487 | |||
| 488 | /** |
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| 489 | * Contains array of default condition classes. Extend this method, if you want to change default condition classes |
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| 490 | * for the query builder. |
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| 491 | * |
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| 492 | * See {@see conditionClasses} docs for details. |
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| 493 | */ |
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| 494 | protected function defaultConditionClasses(): array |
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| 495 | { |
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| 496 | return [ |
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| 497 | 'NOT' => Condition\NotCondition::class, |
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| 498 | 'AND' => Condition\AndCondition::class, |
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| 499 | 'OR' => Condition\OrCondition::class, |
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| 500 | 'BETWEEN' => Condition\BetweenCondition::class, |
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| 501 | 'NOT BETWEEN' => Condition\BetweenCondition::class, |
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| 502 | 'IN' => Condition\InCondition::class, |
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| 503 | 'NOT IN' => Condition\InCondition::class, |
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| 504 | 'LIKE' => Condition\LikeCondition::class, |
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| 505 | 'NOT LIKE' => Condition\LikeCondition::class, |
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| 506 | 'OR LIKE' => Condition\LikeCondition::class, |
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| 507 | 'OR NOT LIKE' => Condition\LikeCondition::class, |
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| 508 | 'EXISTS' => Condition\ExistsCondition::class, |
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| 509 | 'NOT EXISTS' => Condition\ExistsCondition::class, |
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| 510 | ]; |
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| 511 | } |
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| 512 | |||
| 513 | /** |
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| 514 | * Contains array of default expression builders. Extend this method and override it, if you want to change default |
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| 515 | * expression builders for this query builder. |
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| 516 | * |
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| 517 | * See {@see expressionBuilders} docs for details. |
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| 518 | * |
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| 519 | * @psalm-return array<string, class-string<ExpressionBuilderInterface>> |
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| 520 | */ |
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| 521 | protected function defaultExpressionBuilders(): array |
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| 522 | { |
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| 523 | return [ |
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| 524 | Query::class => QueryExpressionBuilder::class, |
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| 525 | Param::class => ParamBuilder::class, |
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| 526 | Expression::class => ExpressionBuilder::class, |
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| 527 | Condition\ConjunctionCondition::class => Condition\Builder\ConjunctionConditionBuilder::class, |
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| 528 | Condition\NotCondition::class => Condition\Builder\NotConditionBuilder::class, |
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| 529 | Condition\AndCondition::class => Condition\Builder\ConjunctionConditionBuilder::class, |
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| 530 | Condition\OrCondition::class => Condition\Builder\ConjunctionConditionBuilder::class, |
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| 531 | Condition\BetweenCondition::class => Condition\Builder\BetweenConditionBuilder::class, |
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| 532 | Condition\InCondition::class => Condition\Builder\InConditionBuilder::class, |
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| 533 | Condition\LikeCondition::class => Condition\Builder\LikeConditionBuilder::class, |
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| 534 | Condition\ExistsCondition::class => Condition\Builder\ExistsConditionBuilder::class, |
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| 535 | Condition\SimpleCondition::class => Condition\Builder\SimpleConditionBuilder::class, |
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| 536 | Condition\HashCondition::class => Condition\Builder\HashConditionBuilder::class, |
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| 537 | Condition\BetweenColumnsCondition::class => Condition\Builder\BetweenColumnsConditionBuilder::class, |
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| 538 | ]; |
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| 539 | } |
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| 540 | |||
| 541 | /** |
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| 542 | * Extracts table alias if there is one or returns false. |
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| 543 | * |
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| 544 | * @psalm-return string[]|bool |
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| 545 | */ |
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| 546 | protected function extractAlias(string $table): array|bool |
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| 547 | { |
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| 548 | if (preg_match('/^(.*?)(?i:\s+as|)\s+([^ ]+)$/', $table, $matches)) { |
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| 549 | return $matches; |
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| 550 | } |
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| 551 | |||
| 552 | return false; |
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| 553 | } |
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| 554 | |||
| 555 | /** |
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| 556 | * Checks to see if the given limit is effective. |
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| 557 | * |
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| 558 | * @param mixed $limit the given limit. |
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| 559 | * |
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| 560 | * @return bool whether the limit is effective. |
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| 561 | */ |
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| 562 | protected function hasLimit(mixed $limit): bool |
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| 563 | { |
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| 564 | return ($limit instanceof ExpressionInterface) || ctype_digit((string) $limit); |
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| 565 | } |
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| 566 | |||
| 567 | /** |
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| 568 | * Checks to see if the given offset is effective. |
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| 569 | * |
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| 570 | * @param mixed $offset the given offset. |
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| 571 | * |
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| 572 | * @return bool whether the offset is effective. |
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| 573 | */ |
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| 574 | protected function hasOffset(mixed $offset): bool |
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| 575 | { |
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| 576 | return ($offset instanceof ExpressionInterface) || (ctype_digit((string)$offset) && (string)$offset !== '0'); |
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| 577 | } |
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| 578 | |||
| 579 | /** |
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| 580 | * Quotes table names passed. |
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| 581 | * |
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| 582 | * @throws Exception|InvalidConfigException|NotSupportedException |
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| 583 | */ |
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| 584 | private function quoteTableNames(array $tables, array &$params): array |
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| 611 | } |
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| 612 | } |
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| 613 |