yiisoft /
yii2
| Total Complexity | 56 |
| Total Lines | 241 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like InConditionBuilder 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 InConditionBuilder, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 21 | class InConditionBuilder implements ExpressionBuilderInterface |
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| 22 | { |
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| 23 | use ExpressionBuilderTrait; |
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| 24 | |||
| 25 | |||
| 26 | /** |
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| 27 | * Method builds the raw SQL from the $expression that will not be additionally |
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| 28 | * escaped or quoted. |
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| 29 | * |
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| 30 | * @param ExpressionInterface|InCondition $expression the expression to be built. |
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| 31 | * @param array $params the binding parameters. |
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| 32 | * @return string the raw SQL that will not be additionally escaped or quoted. |
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| 33 | */ |
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| 34 | public function build(ExpressionInterface $expression, array &$params = []) |
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| 35 | { |
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| 36 | $operator = strtoupper($expression->getOperator()); |
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| 37 | $column = $expression->getColumn(); |
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| 38 | $values = $expression->getValues(); |
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| 39 | |||
| 40 | if ($column === []) { |
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| 41 | // no columns to test against |
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| 42 | return $operator === 'IN' ? '0=1' : ''; |
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| 43 | } |
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| 44 | |||
| 45 | if ($values instanceof Query) { |
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| 46 | return $this->buildSubqueryInCondition($operator, $column, $values, $params); |
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| 47 | } |
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| 48 | |||
| 49 | if (!is_array($values) && !$values instanceof \Traversable) { |
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| 50 | // ensure values is an array |
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| 51 | $values = (array) $values; |
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| 52 | } |
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| 53 | |||
| 54 | if (is_array($column)) { |
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| 55 | if (count($column) > 1) { |
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| 56 | return $this->buildCompositeInCondition($operator, $column, $values, $params); |
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| 57 | } |
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| 58 | $column = reset($column); |
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| 59 | } |
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| 60 | |||
| 61 | if ($column instanceof \Traversable) { |
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| 62 | if (iterator_count($column) > 1) { |
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| 63 | return $this->buildCompositeInCondition($operator, $column, $values, $params); |
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| 64 | } |
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| 65 | $column->rewind(); |
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| 66 | $column = $column->current(); |
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| 67 | } |
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| 68 | |||
| 69 | if ($column instanceof ExpressionInterface) { |
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| 70 | $column = $column->expression; |
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| 71 | } |
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| 72 | |||
| 73 | if (is_array($values)) { |
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| 74 | $rawValues = $values; |
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| 75 | } elseif ($values instanceof \Traversable) { |
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| 76 | $rawValues = $this->getRawValuesFromTraversableObject($values); |
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| 77 | } |
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| 78 | |||
| 79 | $nullCondition = null; |
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| 80 | $nullConditionOperator = null; |
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| 81 | if (isset($rawValues) && in_array(null, $rawValues, true)) { |
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| 82 | $nullCondition = $this->getNullCondition($operator, $column); |
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| 83 | $nullConditionOperator = $operator === 'IN' ? 'OR' : 'AND'; |
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| 84 | } |
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| 85 | |||
| 86 | $sqlValues = $this->buildValues($expression, $values, $params); |
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| 87 | if (empty($sqlValues)) { |
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| 88 | if ($nullCondition === null) { |
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| 89 | return $operator === 'IN' ? '0=1' : ''; |
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| 90 | } |
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| 91 | return $nullCondition; |
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| 92 | } |
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| 93 | |||
| 94 | if (strpos($column, '(') === false) { |
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| 95 | $column = $this->queryBuilder->db->quoteColumnName($column); |
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| 96 | } |
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| 97 | if (count($sqlValues) > 1) { |
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| 98 | $sql = "$column $operator (" . implode(', ', $sqlValues) . ')'; |
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| 99 | } else { |
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| 100 | $operator = $operator === 'IN' ? '=' : '<>'; |
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| 101 | $sql = $column . $operator . reset($sqlValues); |
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| 102 | } |
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| 103 | |||
| 104 | return $nullCondition !== null && $nullConditionOperator !== null |
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| 105 | ? sprintf('%s %s %s', $sql, $nullConditionOperator, $nullCondition) |
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| 106 | : $sql; |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * Builds $values to be used in [[InCondition]] |
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| 111 | * |
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| 112 | * @param ConditionInterface|InCondition $condition |
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| 113 | * @param array $values |
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| 114 | * @param array $params the binding parameters |
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| 115 | * @return array of prepared for SQL placeholders |
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| 116 | */ |
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| 117 | protected function buildValues(ConditionInterface $condition, $values, &$params) |
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| 118 | { |
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| 119 | $sqlValues = []; |
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| 120 | $column = $condition->getColumn(); |
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| 121 | |||
| 122 | if (is_array($column)) { |
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| 123 | $column = reset($column); |
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| 124 | } |
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| 125 | |||
| 126 | if ($column instanceof \Traversable) { |
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| 127 | $column->rewind(); |
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| 128 | $column = $column->current(); |
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| 129 | } |
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| 130 | |||
| 131 | if ($column instanceof ExpressionInterface) { |
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| 132 | $column = $column->expression; |
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| 133 | } |
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| 134 | |||
| 135 | foreach ($values as $i => $value) { |
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| 136 | if (is_array($value) || $value instanceof \ArrayAccess) { |
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| 137 | $value = isset($value[$column]) ? $value[$column] : null; |
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| 138 | } |
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| 139 | if ($value === null) { |
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| 140 | continue; |
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| 141 | } elseif ($value instanceof ExpressionInterface) { |
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| 142 | $sqlValues[$i] = $this->queryBuilder->buildExpression($value, $params); |
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| 143 | } else { |
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| 144 | $sqlValues[$i] = $this->queryBuilder->bindParam($value, $params); |
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| 145 | } |
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| 146 | } |
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| 147 | |||
| 148 | return $sqlValues; |
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| 149 | } |
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| 150 | |||
| 151 | /** |
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| 152 | * Builds SQL for IN condition. |
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| 153 | * |
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| 154 | * @param string $operator |
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| 155 | * @param array|string $columns |
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| 156 | * @param Query $values |
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| 157 | * @param array $params |
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| 158 | * @return string SQL |
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| 159 | */ |
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| 160 | protected function buildSubqueryInCondition($operator, $columns, $values, &$params) |
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| 161 | { |
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| 162 | $sql = $this->queryBuilder->buildExpression($values, $params); |
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| 163 | |||
| 164 | if (is_array($columns)) { |
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| 165 | foreach ($columns as $i => $col) { |
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| 166 | if ($col instanceof ExpressionInterface) { |
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| 167 | $col = $col->expression; |
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| 168 | } |
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| 169 | if (strpos($col, '(') === false) { |
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| 170 | $columns[$i] = $this->queryBuilder->db->quoteColumnName($col); |
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| 171 | } |
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| 172 | } |
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| 173 | |||
| 174 | return '(' . implode(', ', $columns) . ") $operator $sql"; |
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| 175 | } |
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| 176 | |||
| 177 | if ($columns instanceof ExpressionInterface) { |
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| 178 | $columns = $columns->expression; |
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| 179 | } |
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| 180 | if (strpos($columns, '(') === false) { |
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| 181 | $columns = $this->queryBuilder->db->quoteColumnName($columns); |
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| 182 | } |
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| 183 | |||
| 184 | return "$columns $operator $sql"; |
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| 185 | } |
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| 186 | |||
| 187 | /** |
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| 188 | * Builds SQL for IN condition. |
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| 189 | * |
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| 190 | * @param string $operator |
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| 191 | * @param array|\Traversable $columns |
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| 192 | * @param array $values |
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| 193 | * @param array $params |
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| 194 | * @return string SQL |
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| 195 | */ |
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| 196 | protected function buildCompositeInCondition($operator, $columns, $values, &$params) |
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| 197 | { |
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| 198 | $vss = []; |
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| 199 | foreach ($values as $value) { |
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| 200 | $vs = []; |
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| 201 | foreach ($columns as $column) { |
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| 202 | if ($column instanceof ExpressionInterface) { |
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| 203 | $column = $column->expression; |
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| 204 | } |
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| 205 | if (isset($value[$column])) { |
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| 206 | $vs[] = $this->queryBuilder->bindParam($value[$column], $params); |
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| 207 | } else { |
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| 208 | $vs[] = 'NULL'; |
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| 209 | } |
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| 210 | } |
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| 211 | $vss[] = '(' . implode(', ', $vs) . ')'; |
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| 212 | } |
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| 213 | |||
| 214 | if (empty($vss)) { |
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| 215 | return $operator === 'IN' ? '0=1' : ''; |
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| 216 | } |
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| 217 | |||
| 218 | $sqlColumns = []; |
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| 219 | foreach ($columns as $i => $column) { |
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| 220 | if ($column instanceof ExpressionInterface) { |
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| 221 | $column = $column->expression; |
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| 222 | } |
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| 223 | $sqlColumns[] = strpos($column, '(') === false ? $this->queryBuilder->db->quoteColumnName($column) : $column; |
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| 224 | } |
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| 225 | |||
| 226 | return '(' . implode(', ', $sqlColumns) . ") $operator (" . implode(', ', $vss) . ')'; |
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| 227 | } |
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| 228 | |||
| 229 | /** |
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| 230 | * Builds is null/is not null condition for column based on operator |
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| 231 | * |
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| 232 | * @param string $operator |
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| 233 | * @param string $column |
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| 234 | * @return string is null or is not null condition |
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| 235 | * @since 2.0.31 |
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| 236 | */ |
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| 237 | protected function getNullCondition($operator, $column) { |
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| 238 | $column = $this->queryBuilder->db->quoteColumnName($column); |
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| 239 | if ($operator === 'IN') { |
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| 240 | return sprintf('%s IS NULL', $column); |
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| 241 | } |
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| 242 | return sprintf('%s IS NOT NULL', $column); |
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| 243 | } |
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| 244 | |||
| 245 | /** |
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| 246 | * @param \Traversable $traversableObject |
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| 247 | * @return array raw values |
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| 248 | * @since 2.0.31 |
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| 249 | */ |
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| 250 | protected function getRawValuesFromTraversableObject(\Traversable $traversableObject) |
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| 262 | } |
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| 263 | } |
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| 264 |
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