lagdo /
dbadmin-driver-pgsql
| Total Complexity | 84 |
| Total Lines | 413 |
| Duplicated Lines | 0 % |
| Changes | 3 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Table 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 Table, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class Table extends AbstractTable |
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| 15 | { |
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| 16 | /** |
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| 17 | * @param string $table |
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| 18 | * |
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| 19 | * @return array |
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| 20 | */ |
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| 21 | private function queryStatus(string $table = '') |
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| 22 | { |
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| 23 | $query = "SELECT c.relname AS \"Name\", CASE c.relkind " . |
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| 24 | "WHEN 'r' THEN 'table' WHEN 'm' THEN 'materialized view' ELSE 'view' END AS \"Engine\", " . |
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| 25 | "pg_relation_size(c.oid) AS \"Data_length\", " . |
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| 26 | "pg_total_relation_size(c.oid) - pg_relation_size(c.oid) AS \"Index_length\", " . |
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| 27 | "obj_description(c.oid, 'pg_class') AS \"Comment\", " . |
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| 28 | ($this->driver->minVersion(12) ? "''" : "CASE WHEN c.relhasoids THEN 'oid' ELSE '' END") . |
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| 29 | " AS \"Oid\", c.reltuples as \"Rows\", n.nspname FROM pg_class c " . |
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| 30 | "JOIN pg_namespace n ON(n.nspname = current_schema() AND n.oid = c.relnamespace) " . |
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| 31 | "WHERE relkind IN ('r', 'm', 'v', 'f', 'p') " . |
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| 32 | ($table != "" ? "AND relname = " . $this->driver->quote($table) : "ORDER BY relname"); |
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| 33 | return $this->driver->rows($query); |
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| 34 | } |
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| 35 | |||
| 36 | /** |
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| 37 | * @param array $row |
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| 38 | * |
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| 39 | * @return TableEntity |
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| 40 | */ |
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| 41 | private function makeStatus(array $row) |
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| 42 | { |
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| 43 | $status = new TableEntity($row['Name']); |
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| 44 | $status->engine = $row['Engine']; |
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| 45 | $status->schema = $row['nspname']; |
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| 46 | $status->dataLength = $row['Data_length']; |
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| 47 | $status->indexLength = $row['Index_length']; |
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| 48 | $status->oid = $row['Oid']; |
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| 49 | $status->rows = $row['Rows']; |
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| 50 | $status->comment = $row['Comment']; |
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| 51 | |||
| 52 | return $status; |
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| 53 | } |
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| 54 | |||
| 55 | /** |
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| 56 | * @inheritDoc |
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| 57 | */ |
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| 58 | public function tableStatus(string $table, bool $fast = false) |
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| 59 | { |
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| 60 | $rows = $this->queryStatus($table); |
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| 61 | if (!($row = reset($rows))) { |
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| 62 | return null; |
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| 63 | } |
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| 64 | return $this->makeStatus($row); |
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| 65 | } |
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| 66 | |||
| 67 | /** |
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| 68 | * @inheritDoc |
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| 69 | */ |
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| 70 | public function tablesStatuses(bool $fast = false) |
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| 71 | { |
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| 72 | $tables = []; |
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| 73 | $rows = $this->queryStatus(); |
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| 74 | foreach ($rows as $row) { |
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| 75 | $tables[$row["Name"]] = $this->makeStatus($row); |
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| 76 | } |
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| 77 | return $tables; |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * @inheritDoc |
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| 82 | */ |
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| 83 | public function isView(TableEntity $tableStatus) |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * @inheritDoc |
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| 90 | */ |
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| 91 | public function supportForeignKeys(TableEntity $tableStatus) |
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| 92 | { |
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| 93 | return true; |
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| 94 | } |
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| 95 | |||
| 96 | |||
| 97 | /** |
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| 98 | * Get the primary key of a table |
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| 99 | * Same as indexes(), but the columns of the primary key are returned in a array |
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| 100 | * |
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| 101 | * @param string $table |
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| 102 | * |
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| 103 | * @return array |
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| 104 | */ |
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| 105 | private function primaryKeyColumns(string $table) |
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| 106 | { |
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| 107 | $indexes = []; |
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| 108 | $table_oid = $this->connection->result("SELECT oid FROM pg_class WHERE " . |
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| 109 | "relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = current_schema()) " . |
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| 110 | "AND relname = " . $this->driver->quote($table)); |
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| 111 | $columns = $this->driver->keyValues("SELECT attnum, attname FROM pg_attribute WHERE " . |
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| 112 | "attrelid = $table_oid AND attnum > 0"); |
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| 113 | foreach ($this->driver->rows("SELECT relname, indisunique::int, indisprimary::int, indkey, " . |
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| 114 | "indoption, (indpred IS NOT NULL)::int as indispartial FROM pg_index i, pg_class ci " . |
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| 115 | "WHERE i.indrelid = $table_oid AND ci.oid = i.indexrelid") as $row) |
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| 116 | { |
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| 117 | // $relname = $row["relname"]; |
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| 118 | if ($row["indisprimary"]) { |
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| 119 | foreach (explode(" ", $row["indkey"]) as $indkey) { |
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| 120 | $indexes[] = $columns[$indkey]; |
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| 121 | } |
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| 122 | } |
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| 123 | } |
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| 124 | return $indexes; |
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| 125 | } |
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| 126 | |||
| 127 | /** |
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| 128 | * @inheritDoc |
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| 129 | */ |
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| 130 | public function fields(string $table) |
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| 131 | { |
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| 132 | $fields = []; |
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| 133 | $aliases = [ |
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| 134 | 'timestamp without time zone' => 'timestamp', |
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| 135 | 'timestamp with time zone' => 'timestamptz', |
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| 136 | ]; |
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| 137 | |||
| 138 | // Primary keys |
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| 139 | $primaryKeyColumns = $this->primaryKeyColumns($table); |
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| 140 | |||
| 141 | $identity_column = $this->driver->minVersion(10) ? 'a.attidentity' : '0'; |
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| 142 | $query = "SELECT a.attname AS field, format_type(a.atttypid, a.atttypmod) AS full_type, " . |
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| 143 | "pg_get_expr(d.adbin, d.adrelid) AS default, a.attnotnull::int, " . |
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| 144 | "col_description(c.oid, a.attnum) AS comment, $identity_column AS identity FROM pg_class c " . |
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| 145 | "JOIN pg_namespace n ON c.relnamespace = n.oid JOIN pg_attribute a ON c.oid = a.attrelid " . |
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| 146 | "LEFT JOIN pg_attrdef d ON c.oid = d.adrelid AND a.attnum = d.adnum WHERE c.relname = " . |
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| 147 | $this->driver->quote($table) . |
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| 148 | " AND n.nspname = current_schema() AND NOT a.attisdropped AND a.attnum > 0 ORDER BY a.attnum"; |
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| 149 | foreach ($this->driver->rows($query) as $row) |
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| 150 | { |
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| 151 | $field = new TableFieldEntity(); |
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| 152 | |||
| 153 | $field->name = $row["field"]; |
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| 154 | $field->primary = \in_array($field->name, $primaryKeyColumns); |
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| 155 | $field->fullType = $row["full_type"]; |
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| 156 | $field->default = $row["default"]; |
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| 157 | $field->comment = $row["comment"]; |
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| 158 | //! No collation, no info about primary keys |
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| 159 | preg_match('~([^([]+)(\((.*)\))?([a-z ]+)?((\[[0-9]*])*)$~', $field->fullType, $match); |
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| 160 | list(, $type, $length, $field->length, $addon, $array) = $match; |
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| 161 | $field->length .= $array; |
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| 162 | $check_type = $type . $addon; |
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| 163 | if (isset($aliases[$check_type])) { |
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| 164 | $field->type = $aliases[$check_type]; |
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| 165 | $field->fullType = $field->type . $length . $array; |
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| 166 | } else { |
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| 167 | $field->type = $type; |
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| 168 | $field->fullType = $field->type . $length . $addon . $array; |
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| 169 | } |
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| 170 | if (in_array($row['identity'], ['a', 'd'])) { |
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| 171 | $field->default = 'GENERATED ' . ($row['identity'] == 'd' ? 'BY DEFAULT' : 'ALWAYS') . ' AS IDENTITY'; |
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| 172 | } |
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| 173 | $field->null = !$row["attnotnull"]; |
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| 174 | $field->autoIncrement = $row['identity'] || preg_match('~^nextval\(~i', $row["default"]); |
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| 175 | $field->privileges = ["insert" => 1, "select" => 1, "update" => 1]; |
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| 176 | if (preg_match('~(.+)::[^,)]+(.*)~', $row["default"], $match)) { |
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| 177 | $match1 = $match[1] ?? ''; |
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| 178 | $match10 = $match1[0] ?? ''; |
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| 179 | $match2 = $match[2] ?? ''; |
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| 180 | $field->default = ($match1 == "NULL" ? null : |
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| 181 | (($match10 == "'" ? $this->driver->unescapeId($match1) : $match1) . $match2)); |
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| 182 | } |
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| 183 | |||
| 184 | $fields[$field->name] = $field; |
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| 185 | } |
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| 186 | return $fields; |
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| 187 | } |
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| 188 | |||
| 189 | /** |
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| 190 | * @inheritDoc |
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| 191 | */ |
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| 192 | public function indexes(string $table, ConnectionInterface $connection = null) |
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| 193 | { |
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| 194 | if (!$connection) { |
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| 195 | $connection = $this->connection; |
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| 196 | } |
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| 197 | $indexes = []; |
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| 198 | $table_oid = $connection->result("SELECT oid FROM pg_class WHERE " . |
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| 199 | "relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = current_schema()) " . |
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| 200 | "AND relname = " . $this->driver->quote($table)); |
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| 201 | $columns = $this->driver->keyValues("SELECT attnum, attname FROM pg_attribute WHERE " . |
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| 202 | "attrelid = $table_oid AND attnum > 0", $connection); |
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| 203 | foreach ($this->driver->rows("SELECT relname, indisunique::int, indisprimary::int, indkey, " . |
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| 204 | "indoption, (indpred IS NOT NULL)::int as indispartial FROM pg_index i, pg_class ci " . |
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| 205 | "WHERE i.indrelid = $table_oid AND ci.oid = i.indexrelid", $connection) as $row) |
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| 206 | { |
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| 207 | $index = new IndexEntity(); |
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| 208 | |||
| 209 | $relname = $row["relname"]; |
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| 210 | $index->type = ($row["indispartial"] ? "INDEX" : |
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| 211 | ($row["indisprimary"] ? "PRIMARY" : ($row["indisunique"] ? "UNIQUE" : "INDEX"))); |
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| 212 | $index->columns = []; |
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| 213 | foreach (explode(" ", $row["indkey"]) as $indkey) { |
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| 214 | $index->columns[] = $columns[$indkey]; |
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| 215 | } |
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| 216 | $index->descs = []; |
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| 217 | foreach (explode(" ", $row["indoption"]) as $indoption) { |
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| 218 | $index->descs[] = ($indoption & 1 ? '1' : null); // 1 - INDOPTION_DESC |
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| 219 | } |
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| 220 | $index->lengths = []; |
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| 221 | |||
| 222 | $indexes[$relname] = $index; |
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| 223 | } |
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| 224 | return $indexes; |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * @inheritDoc |
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| 229 | */ |
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| 230 | public function foreignKeys(string $table) |
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| 231 | { |
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| 232 | $foreignKeys = []; |
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| 233 | $onActions = $this->driver->actions(); |
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| 234 | $query = "SELECT conname, condeferrable::int AS deferrable, pg_get_constraintdef(oid) " . |
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| 235 | "AS definition FROM pg_constraint WHERE conrelid = (SELECT pc.oid FROM pg_class AS pc " . |
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| 236 | "INNER JOIN pg_namespace AS pn ON (pn.oid = pc.relnamespace) WHERE pc.relname = " . |
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| 237 | $this->driver->quote($table) . |
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| 238 | " AND pn.nspname = current_schema()) AND contype = 'f'::char ORDER BY conkey, conname"; |
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| 239 | foreach ($this->driver->rows($query) as $row) { |
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| 240 | if (preg_match('~FOREIGN KEY\s*\((.+)\)\s*REFERENCES (.+)\((.+)\)(.*)$~iA', $row['definition'], $match)) { |
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| 241 | $match1 = $match[1] ?? ''; |
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| 242 | $match2 = $match[2] ?? ''; |
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| 243 | $match3 = $match[3] ?? ''; |
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| 244 | $match4 = $match[4] ?? ''; |
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| 245 | $match11 = ''; |
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| 246 | |||
| 247 | $foreignKey = new ForeignKeyEntity(); |
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| 248 | |||
| 249 | $foreignKey->source = array_map('trim', explode(',', $match1)); |
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| 250 | $foreignKey->target = array_map('trim', explode(',', $match3)); |
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| 251 | $foreignKey->onDelete = preg_match("~ON DELETE ($onActions)~", $match4, $match10) ? $match11 : 'NO ACTION'; |
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| 252 | $foreignKey->onUpdate = preg_match("~ON UPDATE ($onActions)~", $match4, $match10) ? $match11 : 'NO ACTION'; |
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| 253 | |||
| 254 | if (preg_match('~^(("([^"]|"")+"|[^"]+)\.)?"?("([^"]|"")+"|[^"]+)$~', $match2, $match10)) { |
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| 255 | // $match11 = $match10[1] ?? ''; |
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| 256 | $match12 = $match10[2] ?? ''; |
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| 257 | // $match13 = $match10[3] ?? ''; |
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| 258 | $match14 = $match10[4] ?? ''; |
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| 259 | $foreignKey->schema = str_replace('""', '"', preg_replace('~^"(.+)"$~', '\1', $match12)); |
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| 260 | $foreignKey->table = str_replace('""', '"', preg_replace('~^"(.+)"$~', '\1', $match14)); |
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| 261 | } |
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| 262 | |||
| 263 | $foreignKeys[$row['conname']] = $foreignKey; |
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| 264 | } |
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| 265 | } |
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| 266 | return $foreignKeys; |
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| 267 | } |
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| 268 | |||
| 269 | /** |
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| 270 | * @inheritDoc |
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| 271 | */ |
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| 272 | public function alterTable(string $table, string $name, array $fields, array $foreign, |
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| 273 | string $comment, string $engine, string $collation, int $autoIncrement, string $partitioning) |
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| 274 | { |
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| 275 | $alter = []; |
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| 276 | $queries = []; |
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| 277 | if ($table != "" && $table != $name) { |
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| 278 | $queries[] = "ALTER TABLE " . $this->driver->table($table) . " RENAME TO " . $this->driver->table($name); |
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| 279 | } |
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| 280 | foreach ($fields as $field) { |
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| 281 | $column = $this->driver->escapeId($field[0]); |
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| 282 | $val = $field[1]; |
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| 283 | if (!$val) { |
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| 284 | $alter[] = "DROP $column"; |
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| 285 | } else { |
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| 286 | $val5 = $val[5]; |
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| 287 | unset($val[5]); |
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| 288 | if ($field[0] == "") { |
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| 289 | if (isset($val[6])) { // auto increment |
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| 290 | $val[1] = ($val[1] == " bigint" ? " big" : ($val[1] == " smallint" ? " small" : " ")) . "serial"; |
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| 291 | } |
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| 292 | $alter[] = ($table != "" ? "ADD " : " ") . implode($val); |
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| 293 | if (isset($val[6])) { |
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| 294 | $alter[] = ($table != "" ? "ADD" : " ") . " PRIMARY KEY ($val[0])"; |
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| 295 | } |
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| 296 | } else { |
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| 297 | if ($column != $val[0]) { |
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| 298 | $queries[] = "ALTER TABLE " . $this->driver->table($name) . " RENAME $column TO $val[0]"; |
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| 299 | } |
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| 300 | $alter[] = "ALTER $column TYPE$val[1]"; |
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| 301 | if (!$val[6]) { |
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| 302 | $alter[] = "ALTER $column " . ($val[3] ? "SET$val[3]" : "DROP DEFAULT"); |
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| 303 | $alter[] = "ALTER $column " . ($val[2] == " NULL" ? "DROP NOT" : "SET") . $val[2]; |
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| 304 | } |
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| 305 | } |
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| 306 | if ($field[0] != "" || $val5 != "") { |
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| 307 | $queries[] = "COMMENT ON COLUMN " . $this->driver->table($name) . ".$val[0] IS " . ($val5 != "" ? substr($val5, 9) : "''"); |
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| 308 | } |
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| 309 | } |
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| 310 | } |
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| 311 | $alter = array_merge($alter, $foreign); |
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| 312 | if ($table == "") { |
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| 313 | array_unshift($queries, "CREATE TABLE " . $this->driver->table($name) . " (\n" . implode(",\n", $alter) . "\n)"); |
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| 314 | } elseif (!empty($alter)) { |
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| 315 | array_unshift($queries, "ALTER TABLE " . $this->driver->table($table) . "\n" . implode(",\n", $alter)); |
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| 316 | } |
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| 317 | if ($table != "" || $comment != "") { |
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| 318 | $queries[] = "COMMENT ON TABLE " . $this->driver->table($name) . " IS " . $this->driver->quote($comment); |
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| 319 | } |
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| 320 | if ($autoIncrement != "") { |
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| 321 | //! $queries[] = "SELECT setval(pg_get_serial_sequence(" . $this->driver->quote($name) . ", ), $autoIncrement)"; |
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| 322 | } |
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| 323 | foreach ($queries as $query) { |
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| 324 | if (!$this->driver->execute($query)) { |
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| 325 | return false; |
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| 326 | } |
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| 327 | } |
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| 328 | return true; |
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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 | public function alterIndexes(string $table, array $alter) |
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| 335 | { |
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| 336 | $create = []; |
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| 337 | $drop = []; |
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| 338 | $queries = []; |
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| 339 | foreach ($alter as $val) { |
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| 340 | if ($val[0] != "INDEX") { |
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| 341 | //! descending UNIQUE indexes results in syntax error |
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| 342 | $create[] = ( |
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| 343 | $val[2] == "DROP" ? "\nDROP CONSTRAINT " . $this->driver->escapeId($val[1]) : |
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| 344 | "\nADD" . ($val[1] != "" ? " CONSTRAINT " . $this->driver->escapeId($val[1]) : "") . |
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| 345 | " $val[0] " . ($val[0] == "PRIMARY" ? "KEY " : "") . "(" . implode(", ", $val[2]) . ")" |
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| 346 | ); |
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| 347 | } elseif ($val[2] == "DROP") { |
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| 348 | $drop[] = $this->driver->escapeId($val[1]); |
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| 349 | } else { |
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| 350 | $queries[] = "CREATE INDEX " . $this->driver->escapeId($val[1] != "" ? $val[1] : uniqid($table . "_")) . |
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| 351 | " ON " . $this->driver->table($table) . " (" . implode(", ", $val[2]) . ")"; |
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| 352 | } |
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| 353 | } |
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| 354 | if ($create) { |
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| 355 | array_unshift($queries, "ALTER TABLE " . $this->driver->table($table) . implode(",", $create)); |
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| 356 | } |
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| 357 | if ($drop) { |
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| 358 | array_unshift($queries, "DROP INDEX " . implode(", ", $drop)); |
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| 359 | } |
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| 360 | foreach ($queries as $query) { |
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| 361 | if (!$this->driver->execute($query)) { |
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| 362 | return false; |
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| 363 | } |
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| 364 | } |
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| 365 | return true; |
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| 366 | } |
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| 367 | |||
| 368 | /** |
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| 369 | * @inheritDoc |
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| 370 | */ |
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| 371 | public function trigger(string $trigger/*, $table = null*/) |
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| 387 | } |
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| 388 | |||
| 389 | /** |
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| 390 | * @inheritDoc |
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| 391 | */ |
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| 392 | public function triggers(string $table) |
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| 393 | { |
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| 394 | $triggers = []; |
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| 395 | $query = "SELECT * FROM information_schema.triggers WHERE trigger_schema = current_schema() " . |
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| 396 | "AND event_object_table = " . $this->driver->quote($table); |
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| 397 | foreach ($this->driver->rows($query) as $row) { |
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| 398 | $triggers[$row["trigger_name"]] = new Trigger($row["action_timing"], $row["event_manipulation"]); |
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| 399 | } |
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| 400 | return $triggers; |
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| 401 | } |
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| 402 | |||
| 403 | /** |
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| 404 | * @inheritDoc |
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| 405 | */ |
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| 406 | public function triggerOptions() |
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| 412 | ]; |
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| 413 | } |
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| 414 | |||
| 415 | /** |
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| 416 | * @inheritDoc |
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| 417 | */ |
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| 418 | public function tableHelp(string $name) |
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| 427 | } |
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| 428 | } |
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| 429 | } |
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| 430 |
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