Elgg /
Elgg
Checks if parameter is documented as null.
| 1 | <?php |
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| 2 | |||
| 3 | namespace Elgg\Database; |
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| 4 | |||
| 5 | use DatabaseException; |
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| 6 | use Doctrine\DBAL\Connection; |
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| 7 | use Doctrine\DBAL\Query\Expression\CompositeExpression; |
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| 8 | use Doctrine\DBAL\Query\QueryBuilder as DbalQueryBuilder; |
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| 9 | use Elgg\Database\Clauses\Clause; |
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| 10 | use Elgg\Database\Clauses\ComparisonClause; |
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| 11 | use Elgg\Database\Clauses\JoinClause; |
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| 12 | use Elgg\Database\Clauses\WhereClause; |
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| 13 | |||
| 14 | /** |
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| 15 | * Database abstraction query builder |
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| 16 | */ |
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| 17 | abstract class QueryBuilder extends DbalQueryBuilder { |
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| 18 | |||
| 19 | const TABLE_ENTITIES = 'entities'; |
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| 20 | const TABLE_METADATA = 'metadata'; |
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| 21 | const TABLE_ANNOTATIONS = 'annotations'; |
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| 22 | const TABLE_RELATIONSHIPS = 'entity_relationships'; |
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| 23 | const TABLE_PRIVATE_SETTINGS = 'private_settings'; |
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| 24 | |||
| 25 | static $calculations = [ |
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| 26 | 'avg', |
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| 27 | 'count', |
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| 28 | 'greatest', |
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| 29 | 'least', |
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| 30 | 'max', |
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| 31 | 'min', |
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| 32 | 'sum', |
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| 33 | ]; |
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| 34 | |||
| 35 | /** |
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| 36 | * @var array |
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| 37 | */ |
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| 38 | protected $joins = []; |
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| 39 | |||
| 40 | /** |
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| 41 | * @var int |
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| 42 | */ |
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| 43 | protected $join_index = 0; |
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| 44 | |||
| 45 | /** |
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| 46 | * @var string |
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| 47 | */ |
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| 48 | protected $table_name; |
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| 49 | |||
| 50 | /** |
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| 51 | * @var string |
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| 52 | */ |
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| 53 | protected $table_alias; |
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| 54 | |||
| 55 | /** |
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| 56 | * Creates a new SelectQueryBuilder for join/where subqueries using the DB connection of the primary QueryBuilder |
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| 57 | * |
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| 58 | * @param string $table Main table name |
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| 59 | * @param string $alias Select alias |
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| 60 | * |
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| 61 | * @return Select |
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| 62 | */ |
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| 63 | 1 | public function subquery($table, $alias = null) { |
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| 64 | 1 | $qb = new Select($this->getConnection()); |
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| 65 | 1 | $qb->from($table, $alias); |
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| 66 | |||
| 67 | 1 | return $qb; |
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| 68 | } |
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| 69 | |||
| 70 | /** |
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| 71 | * Apply clause to this instance |
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| 72 | * |
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| 73 | * @param Clause $clause Clause |
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| 74 | * @param string $alias Table alias |
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| 75 | * |
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| 76 | * @return static |
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| 77 | */ |
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| 78 | 1178 | public function addClause(Clause $clause, $alias = null) { |
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| 79 | 1178 | if (!isset($alias)) { |
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| 80 | 1141 | $alias = $this->getTableAlias(); |
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| 81 | } |
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| 82 | 1178 | $expr = $clause->prepare($this, $alias); |
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| 83 | 1175 | if ($clause instanceof WhereClause && ($expr instanceof CompositeExpression || is_string($expr))) { |
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| 84 | 1151 | $this->andWhere($expr); |
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| 85 | } |
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| 86 | |||
| 87 | 1175 | return $this; |
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| 88 | } |
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| 89 | |||
| 90 | /** |
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| 91 | * Prefixes the table name with installation DB prefix |
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| 92 | * |
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| 93 | * @param string $table |
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| 94 | * |
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| 95 | * @return string |
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| 96 | */ |
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| 97 | 1465 | public function prefix($table) { |
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| 98 | 1465 | $prefix = _elgg_services()->db->prefix; |
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| 99 | 1465 | if (strpos($table, $prefix) !== 0) { |
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| 100 | 1465 | return "{$prefix}{$table}"; |
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| 101 | } |
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| 102 | |||
| 103 | 1236 | return $table; |
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| 104 | } |
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| 105 | |||
| 106 | /** |
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| 107 | * Returns the name of the primary table |
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| 108 | * |
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| 109 | * @return string |
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| 110 | */ |
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| 111 | 5 | public function getTableName() { |
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| 112 | 5 | return $this->table_name; |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * Returns the alias of the primary table |
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| 117 | * @return string |
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| 118 | */ |
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| 119 | 1145 | public function getTableAlias() { |
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| 120 | 1145 | return $this->table_alias; |
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| 121 | } |
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| 122 | |||
| 123 | /** |
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| 124 | * Sets a new parameter assigning it a unique parameter key/name if none provided |
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| 125 | * Returns the name of the new parameter |
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| 126 | * |
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| 127 | * @param mixed $value Parameter value |
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| 128 | * @param string $type Parameter type |
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| 129 | * @param string $key Parameter key/index |
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| 130 | * |
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| 131 | * @return string |
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| 132 | */ |
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| 133 | 1407 | public function param($value, $type = null, $key = null) { |
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| 134 | 1407 | if (!$key) { |
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| 135 | 1406 | $parameters = $this->getParameters(); |
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| 136 | 1406 | $key = ":qb" . (count($parameters) + 1); |
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| 137 | } |
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| 138 | |||
| 139 | 1407 | if (is_array($value)) { |
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| 140 | 161 | if ($type === ELGG_VALUE_INTEGER) { |
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| 141 | 108 | $type = Connection::PARAM_INT_ARRAY; |
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| 142 | 60 | } else if ($type === ELGG_VALUE_STRING) { |
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| 143 | 60 | $type = Connection::PARAM_STR_ARRAY; |
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| 144 | } |
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| 145 | } |
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| 146 | |||
| 147 | 1407 | $this->setParameter($key, $value, $type); |
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| 148 | |||
| 149 | 1407 | return $key; |
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| 150 | } |
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| 151 | |||
| 152 | /** |
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| 153 | * {@inheritdoc} |
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| 154 | * |
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| 155 | * @access private Use create() method on the extending class |
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| 156 | */ |
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| 157 | 1424 | public function from($table, $alias = null) { |
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| 158 | 1424 | $this->table_name = $table; |
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| 159 | 1424 | $this->table_alias = $alias; |
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| 160 | |||
| 161 | 1424 | return parent::from($this->prefix($table), $alias); |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * {@inheritdoc} |
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| 166 | * |
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| 167 | * @access private Use create() method on the extending class |
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| 168 | */ |
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| 169 | 1057 | public function insert($insert = null) { |
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| 170 | 1057 | $this->table_name = $insert; |
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| 171 | |||
| 172 | 1057 | return parent::insert($this->prefix($insert)); |
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| 173 | } |
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| 174 | |||
| 175 | /** |
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| 176 | * {@inheritdoc} |
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| 177 | * |
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| 178 | * @access private Use create() method on the extending class |
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| 179 | */ |
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| 180 | 744 | public function update($table = null, $alias = null) { |
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| 181 | 744 | $this->table_name = $table; |
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| 182 | 744 | $this->table_alias = $alias; |
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| 183 | |||
| 184 | 744 | return parent::update($this->prefix($table), $alias); |
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| 185 | } |
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| 186 | |||
| 187 | /** |
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| 188 | * {@inheritdoc} |
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| 189 | * |
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| 190 | * @access private Use create() method on the extending class |
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| 191 | */ |
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| 192 | 841 | public function delete($table = null, $alias = null) { |
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| 193 | 841 | $this->table_name = $table; |
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| 194 | 841 | $this->table_alias = $alias; |
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| 195 | |||
| 196 | 841 | return parent::delete($this->prefix($table), $alias); |
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| 197 | } |
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| 198 | |||
| 199 | /** |
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| 200 | * {@inheritdoc} |
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| 201 | */ |
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| 202 | 1235 | public function join($fromAlias, $join, $alias, $condition = null) { |
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| 203 | 1235 | return parent::join($fromAlias, $this->prefix($join), $alias, $condition); |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * {@inheritdoc} |
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| 208 | */ |
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| 209 | 1235 | public function innerJoin($fromAlias, $join, $alias, $condition = null) { |
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| 210 | 1235 | return parent::innerJoin($fromAlias, $this->prefix($join), $alias, $condition); |
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| 211 | } |
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| 212 | |||
| 213 | /** |
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| 214 | * {@inheritdoc} |
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| 215 | */ |
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| 216 | 420 | public function leftJoin($fromAlias, $join, $alias, $condition = null) { |
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| 217 | 420 | return parent::leftJoin($fromAlias, $this->prefix($join), $alias, $condition); |
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| 218 | } |
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| 219 | |||
| 220 | /** |
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| 221 | * {@inheritdoc} |
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| 222 | */ |
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| 223 | 2 | public function rightJoin($fromAlias, $join, $alias, $condition = null) { |
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| 224 | 2 | return parent::rightJoin($fromAlias, $this->prefix($join), $alias, $condition); // TODO: Change the autogenerated stub |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * Merges multiple composite expressions with a boolean |
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| 229 | * |
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| 230 | * @param mixed $parts Composite expression(s) or string(s) |
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| 231 | * @param string $boolean AND|OR |
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| 232 | * |
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| 233 | * @return CompositeExpression|string |
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| 234 | */ |
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| 235 | 1338 | public function merge($parts = null, $boolean = 'AND') { |
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| 236 | 1338 | if (empty($parts)) { |
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| 237 | 1276 | return; |
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| 238 | } |
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| 239 | |||
| 240 | 1338 | $parts = (array) $parts; |
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| 241 | |||
| 242 | 1338 | $parts = array_filter($parts, function ($e) { |
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| 243 | 1338 | if (empty($e)) { |
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| 244 | 1301 | return false; |
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| 245 | } |
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| 246 | 1329 | if (!$e instanceof CompositeExpression && !is_string($e)) { |
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| 247 | return false; |
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| 248 | } |
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| 249 | |||
| 250 | 1329 | return true; |
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| 251 | 1338 | }); |
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| 252 | 1338 | if (empty($parts)) { |
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| 253 | 736 | return; |
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| 254 | } |
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| 255 | |||
| 256 | 1329 | if (count($parts) === 1) { |
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| 257 | 1294 | return array_shift($parts); |
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| 258 | } |
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| 259 | |||
| 260 | 1281 | if (strtoupper($boolean) === 'OR') { |
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| 261 | 273 | return $this->expr()->orX()->addMultiple($parts); |
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| 262 | } else { |
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| 263 | 1272 | return $this->expr()->andX()->addMultiple($parts); |
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| 264 | } |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * Build value comparison clause |
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| 269 | * |
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| 270 | * @param string $x Comparison value (e.g. prefixed column name) |
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| 271 | * @param string $comparison Comparison operator |
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| 272 | * @param mixed $y Value to compare against |
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| 273 | * If the value is an array, comparisons will be performed in such as a way as |
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| 274 | * to ensure that either all or none of the elements of the array meet the criteria, |
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| 275 | * e.g. in case of LIKE will return results where at least one element matches the |
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| 276 | * criteria, where as with NOT LIKE will return results where none of the criteria |
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| 277 | * are met |
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| 278 | * @param string $type Value type for sanitization/casting |
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| 279 | * @param bool $case_sensitive Use case sensitive comparison for strings |
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| 280 | * |
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| 281 | * @return CompositeExpression|null |
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| 282 | */ |
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| 283 | 1424 | public function compare($x, $comparison, $y = null, $type = null, $case_sensitive = null) { |
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| 284 | 1424 | return (new ComparisonClause($x, $comparison, $y, $type, $case_sensitive))->prepare($this); |
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| 285 | } |
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| 286 | |||
| 287 | /** |
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| 288 | * Build a between clause |
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| 289 | * |
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| 290 | * @param string $x Comparison value (e.g. prefixed column name) |
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| 291 | * @param mixed $lower Lower bound |
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| 292 | * @param mixed $upper Upper bound |
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| 293 | * |
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| 294 | * @return CompositeExpression|null |
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| 295 | */ |
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| 296 | 1277 | public function between($x, $lower = null, $upper = null, $type = null) { |
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| 297 | 1277 | $wheres = []; |
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| 298 | 1277 | if ($lower) { |
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| 299 | 16 | $wheres[] = $this->compare($x, '>=', $lower, $type); |
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| 300 | } |
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| 301 | 1277 | if ($upper) { |
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| 302 | 17 | $wheres[] = $this->compare($x, '<=', $upper, $type); |
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| 303 | } |
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| 304 | |||
| 305 | 1277 | return $this->merge($wheres); |
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| 306 | } |
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| 307 | |||
| 308 | /** |
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| 309 | * Get an index of the next available join alias |
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| 310 | * @return string |
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| 311 | */ |
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| 312 | 256 | public function getNextJoinAlias() { |
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| 313 | 256 | $this->join_index++; |
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| 314 | |||
| 315 | 256 | return "qbt{$this->join_index}"; |
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| 316 | } |
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| 317 | |||
| 318 | /** |
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| 319 | * Join entity table from alias and return joined table alias |
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| 320 | * |
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| 321 | * @param string $from_alias Main table alias |
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| 322 | * @param string $from_column Guid column name in the main table |
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| 323 | * @param string $join_type JOIN type |
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| 324 | * @param string $joined_alias Joined table alias |
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| 325 | * |
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| 326 | * @return string |
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| 327 | */ |
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| 328 | 688 | public function joinEntitiesTable($from_alias = '', $from_column = 'guid', $join_type = 'inner', $joined_alias = null) { |
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| 329 | 688 | if (in_array($joined_alias, $this->joins)) { |
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| 330 | 3 | return $joined_alias; |
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| 331 | } |
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| 332 | |||
| 333 | 688 | if ($from_alias) { |
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| 334 | 688 | $from_column = "$from_alias.$from_column"; |
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| 335 | } |
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| 336 | |||
| 337 | 688 | $hash = sha1(serialize([ |
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| 338 | 688 | $join_type, |
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| 339 | 688 | self::TABLE_ENTITIES, |
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| 340 | 688 | $from_column, |
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| 341 | ])); |
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| 342 | |||
| 343 | 688 | if (!isset($joined_alias) && !empty($this->joins[$hash])) { |
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| 344 | 1 | return $this->joins[$hash]; |
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| 345 | } |
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| 346 | |||
| 347 | 688 | $condition = function (QueryBuilder $qb, $joined_alias) use ($from_column) { |
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| 348 | 688 | return $qb->compare("$joined_alias.guid", '=', $from_column); |
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| 349 | 688 | }; |
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| 350 | |||
| 351 | 688 | $clause = new JoinClause(self::TABLE_ENTITIES, $joined_alias, $condition, $join_type); |
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| 352 | 688 | $joined_alias = $clause->prepare($this, $from_alias); |
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| 353 | |||
| 354 | 688 | $this->joins[$hash] = $joined_alias; |
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| 355 | |||
| 356 | 688 | return $joined_alias; |
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| 357 | } |
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| 358 | |||
| 359 | /** |
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| 360 | * Join metadata table from alias and return joined table alias |
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| 361 | * |
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| 362 | * @param string $from_alias Alias of the main table |
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| 363 | * @param string $from_column Guid column name in the main table |
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| 364 | * @param null $name Metadata name(s) |
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| 365 | * @param string $join_type JOIN type |
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| 366 | * @param string $joined_alias Joined table alias |
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| 367 | * |
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| 368 | * @return string |
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| 369 | */ |
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| 370 | 1163 | public function joinMetadataTable($from_alias = '', $from_column = 'guid', $name = null, $join_type = 'inner', $joined_alias = null) { |
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| 371 | 1163 | if (in_array($joined_alias, $this->joins)) { |
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| 372 | 5 | return $joined_alias; |
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| 373 | } |
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| 374 | |||
| 375 | 1163 | if ($from_alias) { |
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| 376 | 1163 | $from_column = "$from_alias.$from_column"; |
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| 377 | } |
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| 378 | |||
| 379 | 1163 | $hash = sha1(serialize([ |
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| 380 | 1163 | $join_type, |
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| 381 | 1163 | self::TABLE_METADATA, |
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| 382 | 1163 | $from_column, |
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| 383 | 1163 | (array) $name, |
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| 384 | ])); |
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| 385 | |||
| 386 | 1163 | if (!isset($joined_alias) && !empty($this->joins[$hash])) { |
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| 387 | 4 | return $this->joins[$hash]; |
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| 388 | } |
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| 389 | |||
| 390 | 1163 | $condition = function (QueryBuilder $qb, $joined_alias) use ($from_column, $name) { |
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| 391 | 1163 | return $qb->merge([ |
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| 392 | 1163 | $qb->compare("$joined_alias.entity_guid", '=', $from_column), |
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| 393 | 1163 | $qb->compare("$joined_alias.name", '=', $name, ELGG_VALUE_STRING), |
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| 394 | ]); |
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| 395 | 1163 | }; |
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| 396 | |||
| 397 | 1163 | $clause = new JoinClause(self::TABLE_METADATA, $joined_alias, $condition, $join_type); |
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| 398 | |||
| 399 | 1163 | $joined_alias = $clause->prepare($this, $from_alias); |
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| 400 | |||
| 401 | 1163 | $this->joins[$hash] = $joined_alias; |
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| 402 | |||
| 403 | 1163 | return $joined_alias; |
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| 404 | } |
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| 405 | |||
| 406 | /** |
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| 407 | * Join annotations table from alias and return joined table alias |
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| 408 | * |
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| 409 | * @param string $from_alias Main table alias |
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| 410 | * @param string $from_column Guid column name in the main table |
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| 411 | * @param null $name Annotation name |
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| 412 | * @param string $join_type JOIN type |
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| 413 | * @param string $joined_alias Joined table alias |
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| 414 | * |
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| 415 | * @return string |
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| 416 | */ |
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| 417 | 89 | public function joinAnnotationTable($from_alias = '', $from_column = 'guid', $name = null, $join_type = 'inner', $joined_alias = null) { |
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| 418 | 89 | if (in_array($joined_alias, $this->joins)) { |
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| 419 | 3 | return $joined_alias; |
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| 420 | } |
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| 421 | |||
| 422 | 89 | if ($from_alias) { |
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| 423 | 89 | $from_column = "$from_alias.$from_column"; |
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| 424 | } |
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| 425 | |||
| 426 | 89 | $hash = sha1(serialize([ |
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| 427 | 89 | $join_type, |
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| 428 | 89 | self::TABLE_ANNOTATIONS, |
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| 429 | 89 | $from_column, |
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| 430 | 89 | (array) $name, |
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| 431 | ])); |
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| 432 | |||
| 433 | 89 | if (!isset($joined_alias) && !empty($this->joins[$hash])) { |
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| 434 | 4 | return $this->joins[$hash]; |
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| 435 | } |
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| 436 | |||
| 437 | 89 | $condition = function (QueryBuilder $qb, $joined_alias) use ($from_column, $name) { |
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| 438 | 89 | return $qb->merge([ |
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| 439 | 89 | $qb->compare("$joined_alias.entity_guid", '=', $from_column), |
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| 440 | 89 | $qb->compare("$joined_alias.name", '=', $name, ELGG_VALUE_STRING), |
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| 441 | ]); |
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| 442 | 89 | }; |
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| 443 | |||
| 444 | 89 | $clause = new JoinClause(self::TABLE_ANNOTATIONS, $joined_alias, $condition, $join_type); |
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| 445 | |||
| 446 | 89 | $joined_alias = $clause->prepare($this, $from_alias); |
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| 447 | |||
| 448 | 89 | $this->joins[$hash] = $joined_alias; |
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| 449 | |||
| 450 | 89 | return $joined_alias; |
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| 451 | } |
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| 452 | |||
| 453 | /** |
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| 454 | * Join private settings table from alias and return joined table alias |
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| 455 | * |
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| 456 | * @param string $from_alias Main table alias |
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| 457 | * @param string $from_column Guid column name in the main table |
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| 458 | * @param null $name Private setting name |
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| 459 | * @param string $join_type JOIN type |
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| 460 | * @param string $joined_alias Joined table alias |
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| 461 | * |
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| 462 | * @return string |
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| 463 | */ |
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| 464 | 154 | public function joinPrivateSettingsTable($from_alias = '', $from_column = 'guid', $name = null, $join_type = 'inner', $joined_alias = null) { |
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| 465 | 154 | if (in_array($joined_alias, $this->joins)) { |
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| 466 | 3 | return $joined_alias; |
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| 467 | } |
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| 468 | |||
| 469 | 154 | if ($from_alias) { |
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| 470 | 154 | $from_column = "$from_alias.$from_column"; |
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| 471 | } |
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| 472 | |||
| 473 | 154 | $hash = sha1(serialize([ |
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| 474 | 154 | $join_type, |
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| 475 | 154 | self::TABLE_PRIVATE_SETTINGS, |
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| 476 | 154 | $from_column, |
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| 477 | 154 | (array) $name, |
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| 478 | ])); |
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| 479 | |||
| 480 | 154 | if (!isset($joined_alias) && !empty($this->joins[$hash])) { |
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| 481 | 7 | return $this->joins[$hash]; |
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| 482 | } |
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| 483 | |||
| 484 | 154 | $condition = function (QueryBuilder $qb, $joined_alias) use ($from_column, $name) { |
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| 485 | 154 | return $qb->merge([ |
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| 486 | 154 | $qb->compare("$joined_alias.entity_guid", '=', $from_column), |
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| 487 | 154 | $qb->compare("$joined_alias.name", '=', $name, ELGG_VALUE_STRING), |
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| 488 | ]); |
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| 489 | 154 | }; |
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| 490 | |||
| 491 | 154 | $clause = new JoinClause(self::TABLE_PRIVATE_SETTINGS, $joined_alias, $condition, $join_type); |
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| 492 | |||
| 493 | 154 | $joined_alias = $clause->prepare($this, $from_alias); |
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| 494 | |||
| 495 | 154 | $this->joins[$hash] = $joined_alias; |
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| 496 | |||
| 497 | 154 | return $joined_alias; |
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| 498 | } |
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| 499 | |||
| 500 | /** |
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| 501 | * Join relationship table from alias and return joined table alias |
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| 502 | * |
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| 503 | * @param string $from_alias Main table alias |
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| 504 | * @param string $from_column Guid column name in the main table |
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| 505 | * @param string $name Relationship name |
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| 506 | * @param bool $inverse Join on guid_two column |
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| 507 | * @param string $join_type JOIN type |
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| 508 | * @param string $joined_alias Joined table alias |
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| 509 | * |
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| 510 | * @return string |
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| 511 | * @throws \InvalidParameterException |
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| 512 | */ |
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| 513 | 37 | public function joinRelationshipTable($from_alias = '', $from_column = 'guid', $name = null, $inverse = false, $join_type = 'inner', $joined_alias = null) { |
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| 514 | 37 | if (in_array($joined_alias, $this->joins)) { |
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| 515 | 1 | return $joined_alias; |
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| 516 | } |
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| 517 | |||
| 518 | 37 | if ($from_alias) { |
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| 519 | 37 | $from_column = "$from_alias.$from_column"; |
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| 520 | } |
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| 521 | |||
| 522 | 37 | $hash = sha1(serialize([ |
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| 523 | 37 | $join_type, |
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| 524 | 37 | self::TABLE_RELATIONSHIPS, |
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| 525 | 37 | $from_column, |
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| 526 | 37 | $inverse, |
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| 527 | 37 | (array) $name, |
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| 528 | ])); |
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| 529 | |||
| 530 | 37 | if (!isset($joined_alias) && !empty($this->joins[$hash])) { |
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| 531 | 1 | return $this->joins[$hash]; |
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| 532 | } |
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| 533 | |||
| 534 | 37 | $condition = function (QueryBuilder $qb, $joined_alias) use ($from_column, $name, $inverse) { |
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| 535 | 37 | $parts = []; |
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| 536 | 37 | if ($inverse) { |
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| 537 | 26 | $parts[] = $qb->compare("$joined_alias.guid_one", '=', $from_column); |
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| 538 | } else { |
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| 539 | 17 | $parts[] = $qb->compare("$joined_alias.guid_two", '=', $from_column); |
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| 540 | } |
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| 541 | 37 | $parts[] = $qb->compare("$joined_alias.relationship", '=', $name, ELGG_VALUE_STRING); |
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| 542 | 37 | return $qb->merge($parts); |
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| 543 | 37 | }; |
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| 544 | |||
| 545 | $clause = new JoinClause(self::TABLE_RELATIONSHIPS, $joined_alias, $condition, $join_type); |
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| 546 | |||
| 547 | $joined_alias = $clause->prepare($this, $from_alias); |
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| 548 | |||
| 549 | $this->joins[$hash] = $joined_alias; |
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| 550 | |||
| 551 | return $joined_alias; |
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| 552 | } |
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| 553 | } |
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| 554 |