doctrine /
dbal
Complex classes like DB2Platform often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use DB2Platform, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 23 | class DB2Platform extends AbstractPlatform |
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| 24 | { |
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| 25 | 1883 | public function getCharMaxLength() : int |
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| 26 | { |
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| 27 | 1883 | return 254; |
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| 28 | } |
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| 29 | |||
| 30 | /** |
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| 31 | * {@inheritdoc} |
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| 32 | */ |
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| 33 | 1597 | public function getBinaryMaxLength() |
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| 34 | { |
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| 35 | 1597 | return 32704; |
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| 36 | } |
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| 37 | |||
| 38 | /** |
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| 39 | * {@inheritdoc} |
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| 40 | */ |
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| 41 | 1566 | public function getBinaryDefaultLength() |
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| 42 | { |
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| 43 | 1566 | return 1; |
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| 44 | } |
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| 45 | |||
| 46 | /** |
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| 47 | * {@inheritDoc} |
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| 48 | */ |
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| 49 | 1985 | public function getVarcharTypeDeclarationSQL(array $field) |
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| 50 | { |
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| 51 | // for IBM DB2, the CHAR max length is less than VARCHAR default length |
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| 52 | 1985 | if (! isset($field['length']) && ! empty($field['fixed'])) { |
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| 53 | 1840 | $field['length'] = $this->getCharMaxLength(); |
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| 54 | } |
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| 55 | |||
| 56 | 1985 | return parent::getVarcharTypeDeclarationSQL($field); |
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| 57 | } |
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| 58 | |||
| 59 | /** |
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| 60 | * {@inheritDoc} |
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| 61 | */ |
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| 62 | 1917 | public function getBlobTypeDeclarationSQL(array $field) |
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| 63 | { |
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| 64 | // todo blob(n) with $field['length']; |
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| 65 | 1917 | return 'BLOB(1M)'; |
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| 66 | } |
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| 67 | |||
| 68 | /** |
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| 69 | * {@inheritDoc} |
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| 70 | */ |
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| 71 | 1845 | public function initializeDoctrineTypeMappings() |
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| 72 | { |
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| 73 | 1845 | $this->doctrineTypeMapping = [ |
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| 74 | 'smallint' => 'smallint', |
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| 75 | 'bigint' => 'bigint', |
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| 76 | 'integer' => 'integer', |
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| 77 | 'time' => 'time', |
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| 78 | 'date' => 'date', |
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| 79 | 'varchar' => 'string', |
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| 80 | 'character' => 'string', |
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| 81 | 'varbinary' => 'binary', |
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| 82 | 'binary' => 'binary', |
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| 83 | 'clob' => 'text', |
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| 84 | 'blob' => 'blob', |
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| 85 | 'decimal' => 'decimal', |
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| 86 | 'double' => 'float', |
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| 87 | 'real' => 'float', |
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| 88 | 'timestamp' => 'datetime', |
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| 89 | ]; |
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| 90 | 1845 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * {@inheritdoc} |
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| 94 | */ |
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| 95 | 2023 | public function isCommentedDoctrineType(Type $doctrineType) |
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| 96 | { |
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| 97 | 2023 | if ($doctrineType->getName() === Types::BOOLEAN) { |
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| 98 | // We require a commented boolean type in order to distinguish between boolean and smallint |
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| 99 | // as both (have to) map to the same native type. |
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| 100 | 1180 | return true; |
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| 101 | } |
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| 102 | |||
| 103 | 2022 | return parent::isCommentedDoctrineType($doctrineType); |
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| 104 | } |
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| 105 | |||
| 106 | /** |
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| 107 | * {@inheritDoc} |
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| 108 | */ |
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| 109 | 1986 | protected function getVarcharTypeDeclarationSQLSnippet($length, $fixed) |
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| 110 | { |
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| 111 | 1986 | return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(254)') |
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| 112 | 1986 | : ($length ? 'VARCHAR(' . $length . ')' : 'VARCHAR(255)'); |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * {@inheritdoc} |
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| 117 | */ |
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| 118 | 1595 | protected function getBinaryTypeDeclarationSQLSnippet($length, $fixed) |
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| 119 | { |
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| 120 | 1595 | return $this->getVarcharTypeDeclarationSQLSnippet($length, $fixed) . ' FOR BIT DATA'; |
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| 121 | } |
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| 122 | |||
| 123 | /** |
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| 124 | * {@inheritDoc} |
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| 125 | */ |
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| 126 | 1918 | public function getClobTypeDeclarationSQL(array $field) |
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| 127 | { |
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| 128 | // todo clob(n) with $field['length']; |
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| 129 | 1918 | return 'CLOB(1M)'; |
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| 130 | } |
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| 131 | |||
| 132 | /** |
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| 133 | * {@inheritDoc} |
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| 134 | */ |
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| 135 | 2001 | public function getName() |
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| 136 | { |
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| 137 | 2001 | return 'db2'; |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * {@inheritDoc} |
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| 142 | */ |
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| 143 | 1863 | public function getBooleanTypeDeclarationSQL(array $columnDef) |
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| 144 | { |
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| 145 | 1863 | return 'SMALLINT'; |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * {@inheritDoc} |
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| 150 | */ |
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| 151 | 1993 | public function getIntegerTypeDeclarationSQL(array $columnDef) |
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| 152 | { |
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| 153 | 1993 | return 'INTEGER' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
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| 154 | } |
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| 155 | |||
| 156 | /** |
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| 157 | * {@inheritDoc} |
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| 158 | */ |
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| 159 | 1786 | public function getBigIntTypeDeclarationSQL(array $columnDef) |
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| 160 | { |
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| 161 | 1786 | return 'BIGINT' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * {@inheritDoc} |
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| 166 | */ |
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| 167 | 1840 | public function getSmallIntTypeDeclarationSQL(array $columnDef) |
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| 168 | { |
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| 169 | 1840 | return 'SMALLINT' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
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| 170 | } |
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| 171 | |||
| 172 | /** |
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| 173 | * {@inheritDoc} |
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| 174 | */ |
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| 175 | 1993 | protected function _getCommonIntegerTypeDeclarationSQL(array $columnDef) |
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| 176 | { |
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| 177 | 1993 | $autoinc = ''; |
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| 178 | 1993 | if (! empty($columnDef['autoincrement'])) { |
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| 179 | 1901 | $autoinc = ' GENERATED BY DEFAULT AS IDENTITY'; |
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| 180 | } |
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| 181 | |||
| 182 | 1993 | return $autoinc; |
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| 183 | } |
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| 184 | |||
| 185 | /** |
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| 186 | * {@inheritdoc} |
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| 187 | */ |
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| 188 | 1044 | public function getBitAndComparisonExpression($value1, $value2) |
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| 189 | { |
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| 190 | 1044 | return 'BITAND(' . $value1 . ', ' . $value2 . ')'; |
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| 191 | } |
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| 192 | |||
| 193 | /** |
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| 194 | * {@inheritdoc} |
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| 195 | */ |
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| 196 | 230 | public function getBitOrComparisonExpression($value1, $value2) |
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| 197 | { |
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| 198 | 230 | return 'BITOR(' . $value1 . ', ' . $value2 . ')'; |
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| 199 | } |
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| 200 | |||
| 201 | /** |
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| 202 | * {@inheritdoc} |
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| 203 | */ |
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| 204 | 1816 | protected function getDateArithmeticIntervalExpression($date, $operator, $interval, $unit) |
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| 205 | { |
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| 206 | switch ($unit) { |
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| 207 | 1816 | case DateIntervalUnit::WEEK: |
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| 208 | 1816 | $interval *= 7; |
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| 209 | 1816 | $unit = DateIntervalUnit::DAY; |
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| 210 | 1816 | break; |
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| 211 | |||
| 212 | 1816 | case DateIntervalUnit::QUARTER: |
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| 213 | 1816 | $interval *= 3; |
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| 214 | 1816 | $unit = DateIntervalUnit::MONTH; |
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| 215 | 1816 | break; |
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| 216 | } |
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| 217 | |||
| 218 | 1816 | return $date . ' ' . $operator . ' ' . $interval . ' ' . $unit; |
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| 219 | } |
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| 220 | |||
| 221 | /** |
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| 222 | * {@inheritdoc} |
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| 223 | */ |
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| 224 | 1798 | public function getDateDiffExpression($date1, $date2) |
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| 225 | { |
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| 226 | 1798 | return 'DAYS(' . $date1 . ') - DAYS(' . $date2 . ')'; |
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| 227 | } |
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| 228 | |||
| 229 | /** |
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| 230 | * {@inheritDoc} |
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| 231 | */ |
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| 232 | 1905 | public function getDateTimeTypeDeclarationSQL(array $fieldDeclaration) |
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| 233 | { |
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| 234 | 1905 | if (isset($fieldDeclaration['version']) && $fieldDeclaration['version'] === true) { |
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| 235 | 1749 | return 'TIMESTAMP(0) WITH DEFAULT'; |
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| 236 | } |
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| 237 | |||
| 238 | 1905 | return 'TIMESTAMP(0)'; |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * {@inheritDoc} |
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| 243 | */ |
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| 244 | 1884 | public function getDateTypeDeclarationSQL(array $fieldDeclaration) |
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| 245 | { |
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| 246 | 1884 | return 'DATE'; |
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| 247 | } |
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| 248 | |||
| 249 | /** |
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| 250 | * {@inheritDoc} |
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| 251 | */ |
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| 252 | 1883 | public function getTimeTypeDeclarationSQL(array $fieldDeclaration) |
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| 253 | { |
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| 254 | 1883 | return 'TIME'; |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * {@inheritdoc} |
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| 259 | */ |
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| 260 | 1857 | public function getTruncateTableSQL($tableName, $cascade = false) |
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| 261 | { |
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| 262 | 1857 | $tableIdentifier = new Identifier($tableName); |
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| 263 | |||
| 264 | 1857 | return 'TRUNCATE ' . $tableIdentifier->getQuotedName($this) . ' IMMEDIATE'; |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * This code fragment is originally from the Zend_Db_Adapter_Db2 class, but has been edited. |
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| 269 | * |
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| 270 | * @param string $table |
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| 271 | * @param string $database |
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| 272 | * |
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| 273 | * @return string |
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| 274 | */ |
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| 275 | 1379 | public function getListTableColumnsSQL($table, $database = null) |
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| 276 | { |
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| 277 | 1379 | $table = $this->quoteStringLiteral($table); |
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| 278 | |||
| 279 | // We do the funky subquery and join syscat.columns.default this crazy way because |
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| 280 | // as of db2 v10, the column is CLOB(64k) and the distinct operator won't allow a CLOB, |
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| 281 | // it wants shorter stuff like a varchar. |
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| 282 | return " |
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| 283 | SELECT |
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| 284 | cols.default, |
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| 285 | subq.* |
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| 286 | FROM ( |
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| 287 | SELECT DISTINCT |
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| 288 | c.tabschema, |
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| 289 | c.tabname, |
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| 290 | c.colname, |
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| 291 | c.colno, |
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| 292 | c.typename, |
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| 293 | c.nulls, |
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| 294 | c.length, |
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| 295 | c.scale, |
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| 296 | c.identity, |
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| 297 | tc.type AS tabconsttype, |
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| 298 | c.remarks AS comment, |
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| 299 | k.colseq, |
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| 300 | CASE |
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| 301 | WHEN c.generated = 'D' THEN 1 |
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| 302 | ELSE 0 |
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| 303 | END AS autoincrement |
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| 304 | FROM syscat.columns c |
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| 305 | LEFT JOIN (syscat.keycoluse k JOIN syscat.tabconst tc |
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| 306 | ON (k.tabschema = tc.tabschema |
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| 307 | AND k.tabname = tc.tabname |
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| 308 | AND tc.type = 'P')) |
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| 309 | ON (c.tabschema = k.tabschema |
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| 310 | AND c.tabname = k.tabname |
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| 311 | AND c.colname = k.colname) |
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| 312 | 1379 | WHERE UPPER(c.tabname) = UPPER(" . $table . ') |
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| 313 | ORDER BY c.colno |
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| 314 | ) subq |
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| 315 | JOIN syscat.columns cols |
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| 316 | ON subq.tabschema = cols.tabschema |
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| 317 | AND subq.tabname = cols.tabname |
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| 318 | AND subq.colno = cols.colno |
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| 319 | ORDER BY subq.colno |
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| 320 | '; |
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| 321 | } |
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| 322 | |||
| 323 | /** |
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| 324 | * {@inheritDoc} |
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| 325 | */ |
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| 326 | 243 | public function getListTablesSQL() |
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| 327 | { |
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| 328 | 243 | return "SELECT NAME FROM SYSIBM.SYSTABLES WHERE TYPE = 'T'"; |
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| 329 | } |
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| 330 | |||
| 331 | /** |
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| 332 | * {@inheritDoc} |
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| 333 | */ |
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| 334 | 175 | public function getListViewsSQL($database) |
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| 335 | { |
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| 336 | 175 | return 'SELECT NAME, TEXT FROM SYSIBM.SYSVIEWS'; |
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| 337 | } |
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| 338 | |||
| 339 | /** |
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| 340 | * {@inheritDoc} |
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| 341 | */ |
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| 342 | 191 | public function getListTableIndexesSQL($table, $currentDatabase = null) |
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| 343 | { |
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| 344 | 191 | $table = $this->quoteStringLiteral($table); |
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| 345 | |||
| 346 | return "SELECT idx.INDNAME AS key_name, |
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| 347 | idxcol.COLNAME AS column_name, |
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| 348 | CASE |
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| 349 | WHEN idx.UNIQUERULE = 'P' THEN 1 |
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| 350 | ELSE 0 |
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| 351 | END AS primary, |
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| 352 | CASE |
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| 353 | WHEN idx.UNIQUERULE = 'D' THEN 1 |
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| 354 | ELSE 0 |
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| 355 | END AS non_unique |
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| 356 | FROM SYSCAT.INDEXES AS idx |
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| 357 | JOIN SYSCAT.INDEXCOLUSE AS idxcol |
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| 358 | ON idx.INDSCHEMA = idxcol.INDSCHEMA AND idx.INDNAME = idxcol.INDNAME |
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| 359 | 191 | WHERE idx.TABNAME = UPPER(" . $table . ') |
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| 360 | ORDER BY idxcol.COLSEQ ASC'; |
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| 361 | } |
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| 362 | |||
| 363 | /** |
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| 364 | * {@inheritDoc} |
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| 365 | */ |
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| 366 | 1357 | public function getListTableForeignKeysSQL($table) |
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| 367 | { |
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| 368 | 1357 | $table = $this->quoteStringLiteral($table); |
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| 369 | |||
| 370 | return "SELECT fkcol.COLNAME AS local_column, |
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| 371 | fk.REFTABNAME AS foreign_table, |
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| 372 | pkcol.COLNAME AS foreign_column, |
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| 373 | fk.CONSTNAME AS index_name, |
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| 374 | CASE |
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| 375 | WHEN fk.UPDATERULE = 'R' THEN 'RESTRICT' |
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| 376 | ELSE NULL |
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| 377 | END AS on_update, |
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| 378 | CASE |
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| 379 | WHEN fk.DELETERULE = 'C' THEN 'CASCADE' |
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| 380 | WHEN fk.DELETERULE = 'N' THEN 'SET NULL' |
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| 381 | WHEN fk.DELETERULE = 'R' THEN 'RESTRICT' |
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| 382 | ELSE NULL |
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| 383 | END AS on_delete |
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| 384 | FROM SYSCAT.REFERENCES AS fk |
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| 385 | JOIN SYSCAT.KEYCOLUSE AS fkcol |
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| 386 | ON fk.CONSTNAME = fkcol.CONSTNAME |
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| 387 | AND fk.TABSCHEMA = fkcol.TABSCHEMA |
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| 388 | AND fk.TABNAME = fkcol.TABNAME |
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| 389 | JOIN SYSCAT.KEYCOLUSE AS pkcol |
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| 390 | ON fk.REFKEYNAME = pkcol.CONSTNAME |
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| 391 | AND fk.REFTABSCHEMA = pkcol.TABSCHEMA |
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| 392 | AND fk.REFTABNAME = pkcol.TABNAME |
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| 393 | 1357 | WHERE fk.TABNAME = UPPER(" . $table . ') |
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| 394 | ORDER BY fkcol.COLSEQ ASC'; |
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| 395 | } |
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| 396 | |||
| 397 | /** |
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| 398 | * {@inheritDoc} |
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| 399 | */ |
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| 400 | 1804 | public function getCreateViewSQL($name, $sql) |
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| 401 | { |
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| 402 | 1804 | return 'CREATE VIEW ' . $name . ' AS ' . $sql; |
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| 403 | } |
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| 404 | |||
| 405 | /** |
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| 406 | * {@inheritDoc} |
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| 407 | */ |
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| 408 | 1804 | public function getDropViewSQL($name) |
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| 409 | { |
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| 410 | 1804 | return 'DROP VIEW ' . $name; |
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| 411 | } |
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| 412 | |||
| 413 | /** |
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| 414 | * {@inheritDoc} |
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| 415 | */ |
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| 416 | 1703 | public function getCreateDatabaseSQL($database) |
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| 417 | { |
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| 418 | 1703 | return 'CREATE DATABASE ' . $database; |
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| 419 | } |
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| 420 | |||
| 421 | /** |
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| 422 | * {@inheritDoc} |
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| 423 | */ |
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| 424 | 1703 | public function getDropDatabaseSQL($database) |
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| 425 | { |
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| 426 | 1703 | return 'DROP DATABASE ' . $database; |
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| 427 | } |
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| 428 | |||
| 429 | /** |
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| 430 | * {@inheritDoc} |
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| 431 | */ |
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| 432 | 244 | public function supportsCreateDropDatabase() |
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| 433 | { |
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| 434 | 244 | return false; |
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| 435 | } |
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| 436 | |||
| 437 | /** |
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| 438 | * {@inheritDoc} |
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| 439 | */ |
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| 440 | 1 | public function supportsReleaseSavepoints() |
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| 441 | { |
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| 442 | 1 | return false; |
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| 443 | } |
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| 444 | |||
| 445 | /** |
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| 446 | * {@inheritdoc} |
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| 447 | */ |
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| 448 | 1994 | public function supportsCommentOnStatement() |
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| 449 | { |
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| 450 | 1994 | return true; |
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| 451 | } |
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| 452 | |||
| 453 | /** |
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| 454 | * {@inheritDoc} |
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| 455 | */ |
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| 456 | 1797 | public function getCurrentDateSQL() |
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| 457 | { |
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| 458 | 1797 | return 'CURRENT DATE'; |
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| 459 | } |
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| 460 | |||
| 461 | /** |
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| 462 | * {@inheritDoc} |
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| 463 | */ |
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| 464 | 1795 | public function getCurrentTimeSQL() |
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| 465 | { |
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| 466 | 1795 | return 'CURRENT TIME'; |
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| 467 | } |
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| 468 | |||
| 469 | /** |
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| 470 | * {@inheritDoc} |
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| 471 | */ |
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| 472 | 1795 | public function getCurrentTimestampSQL() |
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| 473 | { |
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| 474 | 1795 | return 'CURRENT TIMESTAMP'; |
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| 475 | } |
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| 476 | |||
| 477 | /** |
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| 478 | * {@inheritDoc} |
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| 479 | */ |
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| 480 | 438 | public function getIndexDeclarationSQL($name, Index $index) |
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| 481 | { |
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| 482 | // Index declaration in statements like CREATE TABLE is not supported. |
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| 483 | 438 | throw DBALException::notSupported(__METHOD__); |
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| 484 | } |
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| 485 | |||
| 486 | /** |
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| 487 | * {@inheritDoc} |
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| 488 | */ |
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| 489 | 1993 | protected function _getCreateTableSQL($tableName, array $columns, array $options = []) |
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| 490 | { |
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| 491 | 1993 | $indexes = []; |
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| 492 | 1993 | if (isset($options['indexes'])) { |
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| 493 | 1993 | $indexes = $options['indexes']; |
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| 494 | } |
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| 495 | |||
| 496 | 1993 | $options['indexes'] = []; |
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| 497 | |||
| 498 | 1993 | $sqls = parent::_getCreateTableSQL($tableName, $columns, $options); |
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| 499 | |||
| 500 | 1993 | foreach ($indexes as $definition) { |
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| 501 | 1925 | $sqls[] = $this->getCreateIndexSQL($definition, $tableName); |
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| 502 | } |
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| 503 | |||
| 504 | 1993 | return $sqls; |
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| 505 | } |
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| 506 | |||
| 507 | /** |
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| 508 | * {@inheritDoc} |
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| 509 | */ |
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| 510 | 1630 | public function getAlterTableSQL(TableDiff $diff) |
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| 511 | { |
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| 512 | 1630 | $sql = []; |
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| 513 | 1630 | $columnSql = []; |
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| 514 | 1630 | $commentsSQL = []; |
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| 515 | |||
| 516 | 1630 | $queryParts = []; |
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| 517 | 1630 | foreach ($diff->addedColumns as $column) { |
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| 518 | 972 | if ($this->onSchemaAlterTableAddColumn($column, $diff, $columnSql)) { |
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| 519 | continue; |
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| 520 | } |
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| 521 | |||
| 522 | 972 | $columnDef = $column->toArray(); |
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| 523 | 972 | $queryPart = 'ADD COLUMN ' . $this->getColumnDeclarationSQL($column->getQuotedName($this), $columnDef); |
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| 524 | |||
| 525 | // Adding non-nullable columns to a table requires a default value to be specified. |
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| 526 | 972 | if (! empty($columnDef['notnull']) && |
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| 527 | 972 | ! isset($columnDef['default']) && |
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| 528 | 972 | empty($columnDef['autoincrement']) |
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| 529 | ) { |
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| 530 | 927 | $queryPart .= ' WITH DEFAULT'; |
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| 531 | } |
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| 532 | |||
| 533 | 972 | $queryParts[] = $queryPart; |
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| 534 | |||
| 535 | 972 | $comment = $this->getColumnComment($column); |
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| 536 | |||
| 537 | 972 | if ($comment === null || $comment === '') { |
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| 538 | 971 | continue; |
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| 539 | } |
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| 540 | |||
| 541 | 737 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
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| 542 | 737 | $diff->getName($this)->getQuotedName($this), |
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| 543 | 737 | $column->getQuotedName($this), |
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| 544 | $comment |
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| 545 | ); |
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| 546 | } |
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| 547 | |||
| 548 | 1630 | foreach ($diff->removedColumns as $column) { |
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| 549 | 971 | if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) { |
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| 550 | continue; |
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| 551 | } |
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| 552 | |||
| 553 | 971 | $queryParts[] = 'DROP COLUMN ' . $column->getQuotedName($this); |
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| 554 | } |
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| 555 | |||
| 556 | 1630 | foreach ($diff->changedColumns as $columnDiff) { |
|
| 557 | 1617 | if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) { |
|
| 558 | continue; |
||
| 559 | } |
||
| 560 | |||
| 561 | 1617 | if ($columnDiff->hasChanged('comment')) { |
|
| 562 | 875 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
|
| 563 | 875 | $diff->getName($this)->getQuotedName($this), |
|
| 564 | 875 | $columnDiff->column->getQuotedName($this), |
|
| 565 | 875 | $this->getColumnComment($columnDiff->column) |
|
| 566 | ); |
||
| 567 | |||
| 568 | 875 | if (count($columnDiff->changedProperties) === 1) { |
|
| 569 | 875 | continue; |
|
| 570 | } |
||
| 571 | } |
||
| 572 | |||
| 573 | 1613 | $this->gatherAlterColumnSQL($diff->getName($this), $columnDiff, $sql, $queryParts); |
|
| 574 | } |
||
| 575 | |||
| 576 | 1630 | foreach ($diff->renamedColumns as $oldColumnName => $column) { |
|
| 577 | 924 | if ($this->onSchemaAlterTableRenameColumn($oldColumnName, $column, $diff, $columnSql)) { |
|
| 578 | continue; |
||
| 579 | } |
||
| 580 | |||
| 581 | 924 | $oldColumnName = new Identifier($oldColumnName); |
|
| 582 | |||
| 583 | 924 | $queryParts[] = 'RENAME COLUMN ' . $oldColumnName->getQuotedName($this) . |
|
| 584 | 924 | ' TO ' . $column->getQuotedName($this); |
|
| 585 | } |
||
| 586 | |||
| 587 | 1630 | $tableSql = []; |
|
| 588 | |||
| 589 | 1630 | if (! $this->onSchemaAlterTable($diff, $tableSql)) { |
|
| 590 | 1630 | if (count($queryParts) > 0) { |
|
| 591 | 1624 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . implode(' ', $queryParts); |
|
| 592 | } |
||
| 593 | |||
| 594 | // Some table alteration operations require a table reorganization. |
||
| 595 | 1630 | if (! empty($diff->removedColumns) || ! empty($diff->changedColumns)) { |
|
| 596 | 1623 | $sql[] = "CALL SYSPROC.ADMIN_CMD ('REORG TABLE " . $diff->getName($this)->getQuotedName($this) . "')"; |
|
| 597 | } |
||
| 598 | |||
| 599 | 1630 | $sql = array_merge($sql, $commentsSQL); |
|
| 600 | |||
| 601 | 1630 | $newName = $diff->getNewName(); |
|
| 602 | |||
| 603 | 1630 | if ($newName !== false) { |
|
| 604 | 830 | $sql[] = sprintf( |
|
| 605 | 2 | 'RENAME TABLE %s TO %s', |
|
| 606 | 830 | $diff->getName($this)->getQuotedName($this), |
|
| 607 | 830 | $newName->getQuotedName($this) |
|
| 608 | ); |
||
| 609 | } |
||
| 610 | |||
| 611 | 1630 | $sql = array_merge( |
|
| 612 | 1630 | $this->getPreAlterTableIndexForeignKeySQL($diff), |
|
| 613 | 1630 | $sql, |
|
| 614 | 1630 | $this->getPostAlterTableIndexForeignKeySQL($diff) |
|
| 615 | ); |
||
| 616 | } |
||
| 617 | |||
| 618 | 1630 | return array_merge($sql, $tableSql, $columnSql); |
|
| 619 | } |
||
| 620 | |||
| 621 | /** |
||
| 622 | * Gathers the table alteration SQL for a given column diff. |
||
| 623 | * |
||
| 624 | * @param Identifier $table The table to gather the SQL for. |
||
| 625 | * @param ColumnDiff $columnDiff The column diff to evaluate. |
||
| 626 | * @param string[] $sql The sequence of table alteration statements to fill. |
||
| 627 | * @param mixed[] $queryParts The sequence of column alteration clauses to fill. |
||
| 628 | */ |
||
| 629 | 1613 | private function gatherAlterColumnSQL(Identifier $table, ColumnDiff $columnDiff, array &$sql, array &$queryParts) : void |
|
| 630 | { |
||
| 631 | 1613 | $alterColumnClauses = $this->getAlterColumnClausesSQL($columnDiff); |
|
| 632 | |||
| 633 | 1613 | if (empty($alterColumnClauses)) { |
|
| 634 | 1290 | return; |
|
| 635 | } |
||
| 636 | |||
| 637 | // If we have a single column alteration, we can append the clause to the main query. |
||
| 638 | 1611 | if (count($alterColumnClauses) === 1) { |
|
| 639 | 1610 | $queryParts[] = current($alterColumnClauses); |
|
| 640 | |||
| 641 | 1610 | return; |
|
| 642 | } |
||
| 643 | |||
| 644 | // We have multiple alterations for the same column, |
||
| 645 | // so we need to trigger a complete ALTER TABLE statement |
||
| 646 | // for each ALTER COLUMN clause. |
||
| 647 | 829 | foreach ($alterColumnClauses as $alterColumnClause) { |
|
| 648 | 829 | $sql[] = 'ALTER TABLE ' . $table->getQuotedName($this) . ' ' . $alterColumnClause; |
|
| 649 | } |
||
| 650 | 829 | } |
|
| 651 | |||
| 652 | /** |
||
| 653 | * Returns the ALTER COLUMN SQL clauses for altering a column described by the given column diff. |
||
| 654 | * |
||
| 655 | * @param ColumnDiff $columnDiff The column diff to evaluate. |
||
| 656 | * |
||
| 657 | * @return string[] |
||
| 658 | */ |
||
| 659 | 1613 | private function getAlterColumnClausesSQL(ColumnDiff $columnDiff) |
|
| 660 | { |
||
| 661 | 1613 | $column = $columnDiff->column->toArray(); |
|
| 662 | |||
| 663 | 1613 | $alterClause = 'ALTER COLUMN ' . $columnDiff->column->getQuotedName($this); |
|
| 664 | |||
| 665 | 1613 | if ($column['columnDefinition']) { |
|
| 666 | 1496 | return [$alterClause . ' ' . $column['columnDefinition']]; |
|
| 667 | } |
||
| 668 | |||
| 669 | 1590 | $clauses = []; |
|
| 670 | |||
| 671 | 1590 | if ($columnDiff->hasChanged('type') || |
|
| 672 | 1587 | $columnDiff->hasChanged('length') || |
|
| 673 | 1586 | $columnDiff->hasChanged('precision') || |
|
| 674 | 1585 | $columnDiff->hasChanged('scale') || |
|
| 675 | 1590 | $columnDiff->hasChanged('fixed') |
|
| 676 | ) { |
||
| 677 | 1583 | $clauses[] = $alterClause . ' SET DATA TYPE ' . $column['type']->getSQLDeclaration($column, $this); |
|
| 678 | } |
||
| 679 | |||
| 680 | 1590 | if ($columnDiff->hasChanged('notnull')) { |
|
| 681 | 1361 | $clauses[] = $column['notnull'] ? $alterClause . ' SET NOT NULL' : $alterClause . ' DROP NOT NULL'; |
|
| 682 | } |
||
| 683 | |||
| 684 | 1590 | if ($columnDiff->hasChanged('default')) { |
|
| 685 | 1422 | if (isset($column['default'])) { |
|
| 686 | 1421 | $defaultClause = $this->getDefaultValueDeclarationSQL($column); |
|
| 687 | |||
| 688 | 1421 | if ($defaultClause) { |
|
| 689 | 1421 | $clauses[] = $alterClause . ' SET' . $defaultClause; |
|
| 690 | } |
||
| 691 | } else { |
||
| 692 | 1375 | $clauses[] = $alterClause . ' DROP DEFAULT'; |
|
| 693 | } |
||
| 694 | } |
||
| 695 | |||
| 696 | 1590 | return $clauses; |
|
| 697 | } |
||
| 698 | |||
| 699 | /** |
||
| 700 | * {@inheritDoc} |
||
| 701 | */ |
||
| 702 | 1630 | protected function getPreAlterTableIndexForeignKeySQL(TableDiff $diff) |
|
| 703 | { |
||
| 704 | 1630 | $sql = []; |
|
| 705 | 1630 | $table = $diff->getName($this)->getQuotedName($this); |
|
| 706 | |||
| 707 | 1630 | foreach ($diff->removedIndexes as $remKey => $remIndex) { |
|
| 708 | 176 | foreach ($diff->addedIndexes as $addKey => $addIndex) { |
|
| 709 | if ($remIndex->getColumns() !== $addIndex->getColumns()) { |
||
| 710 | continue; |
||
| 711 | } |
||
| 712 | |||
| 713 | if ($remIndex->isPrimary()) { |
||
| 714 | $sql[] = 'ALTER TABLE ' . $table . ' DROP PRIMARY KEY'; |
||
| 715 | } elseif ($remIndex->isUnique()) { |
||
| 716 | $sql[] = 'ALTER TABLE ' . $table . ' DROP UNIQUE ' . $remIndex->getQuotedName($this); |
||
| 717 | } else { |
||
| 718 | $sql[] = $this->getDropIndexSQL($remIndex, $table); |
||
| 719 | } |
||
| 720 | |||
| 721 | $sql[] = $this->getCreateIndexSQL($addIndex, $table); |
||
| 722 | |||
| 723 | unset($diff->removedIndexes[$remKey], $diff->addedIndexes[$addKey]); |
||
| 724 | |||
| 725 | break; |
||
| 726 | } |
||
| 727 | } |
||
| 728 | |||
| 729 | 1630 | $sql = array_merge($sql, parent::getPreAlterTableIndexForeignKeySQL($diff)); |
|
| 730 | |||
| 731 | 1630 | return $sql; |
|
| 732 | } |
||
| 733 | |||
| 734 | /** |
||
| 735 | * {@inheritdoc} |
||
| 736 | */ |
||
| 737 | 489 | protected function getRenameIndexSQL($oldIndexName, Index $index, $tableName) |
|
| 746 | |||
| 747 | /** |
||
| 748 | * {@inheritDoc} |
||
| 749 | */ |
||
| 750 | 2003 | public function getDefaultValueDeclarationSQL($field) |
|
| 764 | |||
| 765 | /** |
||
| 766 | * {@inheritDoc} |
||
| 767 | */ |
||
| 768 | 83 | public function getEmptyIdentityInsertSQL($tableName, $identifierColumnName) |
|
| 772 | |||
| 773 | /** |
||
| 774 | * {@inheritDoc} |
||
| 775 | */ |
||
| 776 | 1744 | public function getCreateTemporaryTableSnippetSQL() |
|
| 780 | |||
| 781 | /** |
||
| 782 | * {@inheritDoc} |
||
| 783 | */ |
||
| 784 | 115 | public function getTemporaryTableName($tableName) |
|
| 788 | |||
| 789 | /** |
||
| 790 | * {@inheritDoc} |
||
| 791 | */ |
||
| 792 | 1791 | protected function doModifyLimitQuery($query, $limit, $offset = null) |
|
| 815 | |||
| 816 | /** |
||
| 817 | * {@inheritDoc} |
||
| 818 | */ |
||
| 819 | 1815 | public function getLocateExpression($str, $substr, $startPos = false) |
|
| 827 | |||
| 828 | /** |
||
| 829 | * {@inheritDoc} |
||
| 830 | */ |
||
| 831 | 1657 | public function getSubstringExpression($value, $from, $length = null) |
|
| 839 | |||
| 840 | /** |
||
| 841 | * {@inheritDoc} |
||
| 842 | */ |
||
| 843 | 175 | public function supportsIdentityColumns() |
|
| 847 | |||
| 848 | /** |
||
| 849 | * {@inheritDoc} |
||
| 850 | */ |
||
| 851 | 1628 | public function prefersIdentityColumns() |
|
| 855 | |||
| 856 | /** |
||
| 857 | * {@inheritDoc} |
||
| 858 | * |
||
| 859 | * DB2 returns all column names in SQL result sets in uppercase. |
||
| 860 | */ |
||
| 861 | 1588 | public function getSQLResultCasing($column) |
|
| 865 | |||
| 866 | /** |
||
| 867 | * {@inheritDoc} |
||
| 868 | */ |
||
| 869 | 1702 | public function getForUpdateSQL() |
|
| 873 | |||
| 874 | /** |
||
| 875 | * {@inheritDoc} |
||
| 876 | */ |
||
| 877 | 235 | public function getDummySelectSQL() |
|
| 883 | |||
| 884 | /** |
||
| 885 | * {@inheritDoc} |
||
| 886 | * |
||
| 887 | * DB2 supports savepoints, but they work semantically different than on other vendor platforms. |
||
| 888 | * |
||
| 889 | * TODO: We have to investigate how to get DB2 up and running with savepoints. |
||
| 890 | */ |
||
| 891 | 238 | public function supportsSavepoints() |
|
| 895 | |||
| 896 | /** |
||
| 897 | * {@inheritDoc} |
||
| 898 | */ |
||
| 899 | 2032 | protected function getReservedKeywordsClass() |
|
| 903 | |||
| 904 | 190 | public function getListTableCommentsSQL(string $table) : string |
|
| 905 | { |
||
| 906 | 190 | return sprintf( |
|
| 907 | <<<'SQL' |
||
| 908 | SELECT REMARKS |
||
| 909 | FROM SYSIBM.SYSTABLES |
||
| 910 | WHERE NAME = UPPER( %s ) |
||
| 911 | SQL |
||
| 912 | , |
||
| 913 | 190 | $this->quoteStringLiteral($table) |
|
| 914 | ); |
||
| 915 | } |
||
| 916 | } |
||
| 917 |
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..