Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
71.74% |
33 / 46 |
|
58.33% |
7 / 12 |
CRAP | |
0.00% |
0 / 1 |
| DeleteQueryBuilder | |
71.74% |
33 / 46 |
|
58.33% |
7 / 12 |
34.94 | |
0.00% |
0 / 1 |
| __construct | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| connection | |
0.00% |
0 / 6 |
|
0.00% |
0 / 1 |
6 | |||
| queryInfo | |
85.71% |
6 / 7 |
|
0.00% |
0 / 1 |
4.05 | |||
| table | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| deleteFrom | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| delete | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| where | |
90.00% |
9 / 10 |
|
0.00% |
0 / 1 |
5.03 | |||
| andWhere | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| conds | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| caller | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| execute | |
42.86% |
3 / 7 |
|
0.00% |
0 / 1 |
4.68 | |||
| getQueryInfo | |
100.00% |
7 / 7 |
|
100.00% |
1 / 1 |
2 | |||
| 1 | <?php |
| 2 | |
| 3 | namespace Wikimedia\Rdbms; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use UnexpectedValueException; |
| 7 | |
| 8 | /** |
| 9 | * A query builder for DELETE queries with a fluent interface. |
| 10 | * |
| 11 | * Any particular query builder object should only be used for a single database query, |
| 12 | * and not be reused afterwards. However, to run multiple similar queries, |
| 13 | * you can create a “template” query builder to set up most of the query, |
| 14 | * and then clone the object (and potentially modify the clone) for each individual query. |
| 15 | * |
| 16 | * @stable to extend |
| 17 | * @since 1.41 |
| 18 | * @ingroup Database |
| 19 | */ |
| 20 | class DeleteQueryBuilder { |
| 21 | /** |
| 22 | * The table name to be passed to IDatabase::delete() |
| 23 | */ |
| 24 | private string $table = ''; |
| 25 | |
| 26 | /** |
| 27 | * The conditions to be passed to IDatabase::delete() |
| 28 | */ |
| 29 | private array $conds = []; |
| 30 | |
| 31 | /** |
| 32 | * The caller (function name) to be passed to IDatabase::delete() |
| 33 | */ |
| 34 | private string $caller = __CLASS__; |
| 35 | |
| 36 | protected IDatabase $db; |
| 37 | |
| 38 | /** |
| 39 | * Only for use in subclasses and Database::newDeleteQueryBuilder. |
| 40 | * To create a DeleteQueryBuilder instance, use `$db->newDeleteQueryBuilder()` instead. |
| 41 | * |
| 42 | * @param IDatabase $db |
| 43 | */ |
| 44 | public function __construct( IDatabase $db ) { |
| 45 | $this->db = $db; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Change the IDatabase object the query builder is bound to. The specified |
| 50 | * IDatabase will subsequently be used to execute the query. |
| 51 | * |
| 52 | * @param IDatabase $db |
| 53 | * @return $this |
| 54 | */ |
| 55 | public function connection( IDatabase $db ): DeleteQueryBuilder { |
| 56 | if ( $this->db->getType() !== $db->getType() ) { |
| 57 | throw new InvalidArgumentException( |
| 58 | __METHOD__ . ' cannot switch to a database of a different type.' |
| 59 | ); |
| 60 | } |
| 61 | $this->db = $db; |
| 62 | return $this; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Set the query parameters to the given values, appending to the values |
| 67 | * which were already set. This can be used to interface with legacy code. |
| 68 | * If a key is omitted, the previous value will be retained. |
| 69 | * |
| 70 | * The parameters must be formatted as required by Database::delete. |
| 71 | * |
| 72 | * @param array $info Associative array of query info, with keys: |
| 73 | * - table: The table name to be passed to IDatabase::delete() |
| 74 | * - conds: The conditions |
| 75 | * - caller: The caller signature |
| 76 | * |
| 77 | * @return $this |
| 78 | */ |
| 79 | public function queryInfo( array $info ): DeleteQueryBuilder { |
| 80 | if ( isset( $info['table'] ) ) { |
| 81 | $this->table( $info['table'] ); |
| 82 | } |
| 83 | if ( isset( $info['conds'] ) ) { |
| 84 | $this->where( $info['conds'] ); |
| 85 | } |
| 86 | if ( isset( $info['caller'] ) ) { |
| 87 | $this->caller( $info['caller'] ); |
| 88 | } |
| 89 | return $this; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Manually set the table name to be passed to IDatabase::delete() |
| 94 | * |
| 95 | * @param string $table The table name |
| 96 | * @param-taint $table exec_sql |
| 97 | * @return $this |
| 98 | */ |
| 99 | public function table( string $table ): DeleteQueryBuilder { |
| 100 | $this->table = $table; |
| 101 | return $this; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Set table for the query. Alias for table(). |
| 106 | * |
| 107 | * @param string $table The table name |
| 108 | * @param-taint $table exec_sql |
| 109 | * @return $this |
| 110 | */ |
| 111 | public function deleteFrom( string $table ): DeleteQueryBuilder { |
| 112 | return $this->table( $table ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Set table for the query. Alias for table(). |
| 117 | * |
| 118 | * @param string $table The table name |
| 119 | * @param-taint $table exec_sql |
| 120 | * @return $this |
| 121 | */ |
| 122 | public function delete( string $table ): DeleteQueryBuilder { |
| 123 | return $this->table( $table ); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Add conditions to the query. The supplied conditions will be appended |
| 128 | * to the existing conditions, separated by AND. |
| 129 | * |
| 130 | * @param string|array|IExpression $conds |
| 131 | * @param-taint $conds exec_sql_numkey |
| 132 | * |
| 133 | * May be either a string containing a single condition, or an array of |
| 134 | * conditions. If an array is given, the conditions constructed from each |
| 135 | * element are combined with AND. |
| 136 | * |
| 137 | * Array elements may take one of two forms: |
| 138 | * |
| 139 | * - Elements with a numeric key are interpreted as raw SQL fragments. |
| 140 | * - Elements with a string key are interpreted as equality conditions, |
| 141 | * where the key is the field name. |
| 142 | * - If the value of such an array element is a scalar (such as a |
| 143 | * string), it will be treated as data and thus quoted appropriately. |
| 144 | * If it is null, an IS NULL clause will be added. |
| 145 | * - If the value is an array, an IN (...) clause will be constructed |
| 146 | * from its non-null elements, and an IS NULL clause will be added |
| 147 | * if null is present, such that the field may match any of the |
| 148 | * elements in the array. The non-null elements will be quoted. |
| 149 | * |
| 150 | * Note that expressions are often DBMS-dependent in their syntax. |
| 151 | * DBMS-independent wrappers are provided for constructing several types of |
| 152 | * expression commonly used in condition queries. See: |
| 153 | * - IDatabase::buildLike() |
| 154 | * - IDatabase::conditional() |
| 155 | * |
| 156 | * Untrusted user input is safe in the values of string keys, however untrusted |
| 157 | * input must not be used in the array key names or in the values of numeric keys. |
| 158 | * Escaping of untrusted input used in values of numeric keys should be done via |
| 159 | * IDatabase::addQuotes() |
| 160 | * |
| 161 | * @return $this |
| 162 | */ |
| 163 | public function where( $conds ): DeleteQueryBuilder { |
| 164 | if ( is_array( $conds ) ) { |
| 165 | foreach ( $conds as $key => $cond ) { |
| 166 | if ( is_int( $key ) ) { |
| 167 | $this->conds[] = $cond; |
| 168 | } elseif ( isset( $this->conds[$key] ) ) { |
| 169 | // @phan-suppress-previous-line PhanTypeMismatchDimFetch |
| 170 | // T288882 |
| 171 | $this->conds[] = $this->db->makeList( |
| 172 | [ $key => $cond ], IDatabase::LIST_AND ); |
| 173 | } else { |
| 174 | $this->conds[$key] = $cond; |
| 175 | } |
| 176 | } |
| 177 | } else { |
| 178 | $this->conds[] = $conds; |
| 179 | } |
| 180 | return $this; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Add conditions to the query. Alias for where(). |
| 185 | * |
| 186 | * @param string|array|IExpression $conds |
| 187 | * @param-taint $conds exec_sql_numkey |
| 188 | * @return $this |
| 189 | */ |
| 190 | public function andWhere( $conds ): DeleteQueryBuilder { |
| 191 | return $this->where( $conds ); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Add conditions to the query. Alias for where(). |
| 196 | * |
| 197 | * @param string|array|IExpression $conds |
| 198 | * @param-taint $conds exec_sql_numkey |
| 199 | * @return $this |
| 200 | */ |
| 201 | public function conds( $conds ): DeleteQueryBuilder { |
| 202 | return $this->where( $conds ); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Set the method name to be included in an SQL comment. |
| 207 | * |
| 208 | * @param string $fname |
| 209 | * @param-taint $fname exec_sql |
| 210 | * @return $this |
| 211 | */ |
| 212 | public function caller( string $fname ): DeleteQueryBuilder { |
| 213 | $this->caller = $fname; |
| 214 | return $this; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Run the constructed DELETE query. |
| 219 | */ |
| 220 | public function execute(): void { |
| 221 | if ( !$this->conds ) { |
| 222 | throw new UnexpectedValueException( |
| 223 | __METHOD__ . ' expects at least one condition to be set' ); |
| 224 | } |
| 225 | if ( $this->table === '' ) { |
| 226 | throw new UnexpectedValueException( |
| 227 | __METHOD__ . ' expects table not to be empty' ); |
| 228 | } |
| 229 | $this->db->delete( $this->table, $this->conds, $this->caller ); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Get an associative array describing the query in terms of its raw parameters to |
| 234 | * IDatabase::delete(). This can be used to interface with legacy code. |
| 235 | * |
| 236 | * @return array The query info array, with keys: |
| 237 | * - table: The table name |
| 238 | * - conds: The conditions |
| 239 | * - caller: The caller signature |
| 240 | */ |
| 241 | public function getQueryInfo(): array { |
| 242 | $info = [ |
| 243 | 'table' => $this->table, |
| 244 | 'conds' => $this->conds, |
| 245 | ]; |
| 246 | if ( $this->caller !== __CLASS__ ) { |
| 247 | $info['caller'] = $this->caller; |
| 248 | } |
| 249 | return $info; |
| 250 | } |
| 251 | } |