doctrine /
dbal
| Total Complexity | 50 |
| Total Lines | 335 |
| Duplicated Lines | 26.87 % |
| Coverage | 0% |
| Changes | 0 | ||
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like DB2Statement 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 DB2Statement, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 25 | class DB2Statement implements \IteratorAggregate, Statement |
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| 26 | { |
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| 27 | /** |
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| 28 | * @var resource |
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| 29 | */ |
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| 30 | private $_stmt; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var array |
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| 34 | */ |
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| 35 | private $_bindParam = []; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var string Name of the default class to instantiate when fetch mode is \PDO::FETCH_CLASS. |
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| 39 | */ |
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| 40 | private $defaultFetchClass = '\stdClass'; |
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| 41 | |||
| 42 | /** |
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| 43 | * @var string Constructor arguments for the default class to instantiate when fetch mode is \PDO::FETCH_CLASS. |
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| 44 | */ |
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| 45 | private $defaultFetchClassCtorArgs = []; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var integer |
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| 49 | */ |
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| 50 | private $_defaultFetchMode = \PDO::FETCH_BOTH; |
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| 51 | |||
| 52 | /** |
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| 53 | * Indicates whether the statement is in the state when fetching results is possible |
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| 54 | * |
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| 55 | * @var bool |
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| 56 | */ |
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| 57 | private $result = false; |
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| 58 | |||
| 59 | /** |
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| 60 | * DB2_BINARY, DB2_CHAR, DB2_DOUBLE, or DB2_LONG |
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| 61 | * |
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| 62 | * @var array |
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| 63 | */ |
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| 64 | static private $_typeMap = [ |
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| 65 | \PDO::PARAM_INT => DB2_LONG, |
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Bug
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| 66 | \PDO::PARAM_STR => DB2_CHAR, |
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| 67 | ]; |
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| 68 | |||
| 69 | /** |
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| 70 | * @param resource $stmt |
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| 71 | */ |
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| 72 | public function __construct($stmt) |
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| 73 | { |
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| 74 | $this->_stmt = $stmt; |
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| 75 | } |
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| 76 | |||
| 77 | /** |
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| 78 | * {@inheritdoc} |
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| 79 | */ |
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| 80 | public function bindValue($param, $value, $type = null) |
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| 81 | { |
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| 82 | return $this->bindParam($param, $value, $type); |
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| 83 | } |
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| 84 | |||
| 85 | /** |
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| 86 | * {@inheritdoc} |
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| 87 | */ |
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| 88 | public function bindParam($column, &$variable, $type = null, $length = null) |
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| 89 | { |
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| 90 | $this->_bindParam[$column] =& $variable; |
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| 91 | |||
| 92 | if ($type && isset(self::$_typeMap[$type])) { |
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| 93 | $type = self::$_typeMap[$type]; |
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| 94 | } else { |
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| 95 | $type = DB2_CHAR; |
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| 96 | } |
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| 97 | |||
| 98 | if (!db2_bind_param($this->_stmt, $column, "variable", DB2_PARAM_IN, $type)) { |
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| 99 | throw new DB2Exception(db2_stmt_errormsg()); |
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| 100 | } |
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| 101 | |||
| 102 | return true; |
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| 103 | } |
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| 104 | |||
| 105 | /** |
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| 106 | * {@inheritdoc} |
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| 107 | */ |
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| 108 | public function closeCursor() |
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| 109 | { |
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| 110 | if ( ! $this->_stmt) { |
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| 111 | return false; |
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| 112 | } |
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| 113 | |||
| 114 | $this->_bindParam = []; |
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| 115 | |||
| 116 | if (!db2_free_result($this->_stmt)) { |
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| 117 | return false; |
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| 118 | } |
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| 119 | |||
| 120 | $this->result = false; |
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| 121 | |||
| 122 | return true; |
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| 123 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * {@inheritdoc} |
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| 127 | */ |
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| 128 | public function columnCount() |
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| 135 | } |
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| 136 | |||
| 137 | /** |
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| 138 | * {@inheritdoc} |
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| 139 | */ |
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| 140 | public function errorCode() |
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| 141 | { |
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| 142 | return db2_stmt_error(); |
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| 143 | } |
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| 144 | |||
| 145 | /** |
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| 146 | * {@inheritdoc} |
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| 147 | */ |
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| 148 | public function errorInfo() |
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| 149 | { |
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| 150 | return [ |
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| 151 | db2_stmt_errormsg(), |
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| 152 | db2_stmt_error(), |
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| 153 | ]; |
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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 | public function execute($params = null) |
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| 184 | } |
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| 185 | |||
| 186 | /** |
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| 187 | * {@inheritdoc} |
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| 188 | */ |
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| 189 | View Code Duplication | public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null) |
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| 196 | } |
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| 197 | |||
| 198 | /** |
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| 199 | * {@inheritdoc} |
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| 200 | */ |
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| 201 | public function getIterator() |
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| 202 | { |
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| 203 | return new StatementIterator($this); |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * {@inheritdoc} |
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| 208 | */ |
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| 209 | View Code Duplication | public function fetch($fetchMode = null, $cursorOrientation = \PDO::FETCH_ORI_NEXT, $cursorOffset = 0) |
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| 210 | { |
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| 211 | // do not try fetching from the statement if it's not expected to contain result |
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| 212 | // in order to prevent exceptional situation |
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| 213 | if (!$this->result) { |
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| 214 | return false; |
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| 215 | } |
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| 216 | |||
| 217 | $fetchMode = $fetchMode ?: $this->_defaultFetchMode; |
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| 218 | switch ($fetchMode) { |
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| 219 | case \PDO::FETCH_BOTH: |
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| 220 | return db2_fetch_both($this->_stmt); |
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| 221 | case \PDO::FETCH_ASSOC: |
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| 222 | return db2_fetch_assoc($this->_stmt); |
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| 223 | case \PDO::FETCH_CLASS: |
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| 224 | $className = $this->defaultFetchClass; |
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| 225 | $ctorArgs = $this->defaultFetchClassCtorArgs; |
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| 226 | |||
| 227 | if (func_num_args() >= 2) { |
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| 228 | $args = func_get_args(); |
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| 229 | $className = $args[1]; |
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| 230 | $ctorArgs = isset($args[2]) ? $args[2] : []; |
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| 231 | } |
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| 232 | |||
| 233 | $result = db2_fetch_object($this->_stmt); |
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| 234 | |||
| 235 | if ($result instanceof \stdClass) { |
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| 236 | $result = $this->castObject($result, $className, $ctorArgs); |
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| 237 | } |
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| 238 | |||
| 239 | return $result; |
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| 240 | case \PDO::FETCH_NUM: |
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| 241 | return db2_fetch_array($this->_stmt); |
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| 242 | case \PDO::FETCH_OBJ: |
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| 243 | return db2_fetch_object($this->_stmt); |
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| 244 | default: |
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| 245 | throw new DB2Exception('Given Fetch-Style ' . $fetchMode . ' is not supported.'); |
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| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | /** |
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| 250 | * {@inheritdoc} |
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| 251 | */ |
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| 252 | View Code Duplication | public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null) |
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| 253 | { |
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| 254 | $rows = []; |
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| 255 | |||
| 256 | switch ($fetchMode) { |
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| 257 | case \PDO::FETCH_CLASS: |
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| 258 | while ($row = call_user_func_array([$this, 'fetch'], func_get_args())) { |
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| 259 | $rows[] = $row; |
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| 260 | } |
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| 261 | break; |
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| 262 | case \PDO::FETCH_COLUMN: |
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| 263 | while ($row = $this->fetchColumn()) { |
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| 264 | $rows[] = $row; |
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| 265 | } |
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| 266 | break; |
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| 267 | default: |
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| 268 | while ($row = $this->fetch($fetchMode)) { |
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| 269 | $rows[] = $row; |
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| 270 | } |
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| 271 | } |
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| 272 | |||
| 273 | return $rows; |
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| 274 | } |
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| 275 | |||
| 276 | /** |
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| 277 | * {@inheritdoc} |
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| 278 | */ |
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| 279 | View Code Duplication | public function fetchColumn($columnIndex = 0) |
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| 288 | } |
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| 289 | |||
| 290 | /** |
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| 291 | * {@inheritdoc} |
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| 292 | */ |
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| 293 | public function rowCount() |
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| 296 | } |
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| 297 | |||
| 298 | /** |
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| 299 | * Casts a stdClass object to the given class name mapping its' properties. |
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| 300 | * |
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| 301 | * @param \stdClass $sourceObject Object to cast from. |
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| 302 | * @param string|object $destinationClass Name of the class or class instance to cast to. |
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| 303 | * @param array $ctorArgs Arguments to use for constructing the destination class instance. |
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| 304 | * |
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| 305 | * @return object |
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| 306 | * |
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| 307 | * @throws DB2Exception |
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| 308 | */ |
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| 309 | private function castObject(\stdClass $sourceObject, $destinationClass, array $ctorArgs = []) |
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| 360 | } |
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| 361 | } |
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| 362 |
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