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<?php |
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/** |
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* PHPPgAdmin v6.0.0-beta.47 |
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*/ |
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namespace PHPPgAdmin\DatabaseTraits; |
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/** |
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* Common trait for views manipulation. |
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*/ |
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trait ViewTrait |
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{ |
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/** |
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* Returns a list of all views in the database. |
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* |
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* @return \PHPPgAdmin\ADORecordSet All views |
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*/ |
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public function getViews() |
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{ |
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$c_schema = $this->_schema; |
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$this->clean($c_schema); |
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$sql = " |
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SELECT c.relname, pg_catalog.pg_get_userbyid(c.relowner) AS relowner, |
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pg_catalog.obj_description(c.oid, 'pg_class') AS relcomment |
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FROM pg_catalog.pg_class c |
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LEFT JOIN pg_catalog.pg_namespace n ON (n.oid = c.relnamespace) |
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WHERE (n.nspname='{$c_schema}') AND (c.relkind = 'v'::\"char\") |
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ORDER BY relname"; |
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return $this->selectSet($sql); |
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} |
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/** |
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* Returns a list of all materialized views in the database. |
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* |
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* @return \PHPPgAdmin\ADORecordSet All materialized views |
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*/ |
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public function getMaterializedViews() |
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{ |
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$c_schema = $this->_schema; |
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$this->clean($c_schema); |
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$sql = " |
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SELECT c.relname, pg_catalog.pg_get_userbyid(c.relowner) AS relowner, |
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pg_catalog.obj_description(c.oid, 'pg_class') AS relcomment |
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FROM pg_catalog.pg_class c |
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LEFT JOIN pg_catalog.pg_namespace n ON (n.oid = c.relnamespace) |
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WHERE (n.nspname='{$c_schema}') AND (c.relkind = 'm'::\"char\") |
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ORDER BY relname"; |
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return $this->selectSet($sql); |
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} |
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/** |
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* Updates a view. |
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* |
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* @param string $viewname The name fo the view to update |
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* @param string $definition The new definition for the view |
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* @param string $comment |
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* @param bool $materialized tells if it's a materialized view or not |
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* |
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* @return bool|int 0 success |
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*/ |
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public function setView($viewname, $definition, $comment, $materialized = false) |
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{ |
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return $this->createView($viewname, $definition, true, $comment, $materialized); |
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} |
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/** |
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* Creates a new view. |
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* |
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* @param string $viewname The name of the view to create |
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* @param string $definition The definition for the new view |
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* @param bool $replace True to replace the view, false otherwise |
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* @param string $comment |
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* @param bool $materialized tells if it's a materialized view |
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* |
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* @return bool|int 0 success |
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*/ |
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public function createView($viewname, $definition, $replace, $comment, $materialized = false) |
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{ |
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$status = $this->beginTransaction(); |
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if ($status != 0) { |
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return -1; |
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} |
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$f_schema = $this->_schema; |
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$this->fieldClean($f_schema); |
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$this->fieldClean($viewname); |
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// Note: $definition not cleaned |
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$sql = 'CREATE '; |
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$sql .= $replace ? ' OR REPLACE ' : ' '; |
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$obj_type = $materialized ? ' MATERIALIZED VIEW ' : ' VIEW '; |
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$sql .= $obj_type . " \"{$f_schema}\".\"{$viewname}\" AS {$definition}"; |
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$status = $this->execute($sql); |
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if ($status) { |
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$this->rollbackTransaction(); |
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return -1; |
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} |
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if ($comment != '') { |
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$status = $this->setComment($obj_type, $viewname, '', $comment); |
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if ($status) { |
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$this->rollbackTransaction(); |
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return -1; |
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} |
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} |
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return $this->endTransaction(); |
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} |
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/** |
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* Alter view properties. |
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* |
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* @param string $view The name of the view |
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* @param string $name The new name for the view |
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* @param string $owner The new owner for the view |
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* @param string $schema The new schema for the view |
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* @param string $comment The comment on the view |
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* |
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* @return bool|int 0 success |
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*/ |
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public function alterView($view, $name, $owner, $schema, $comment) |
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{ |
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$data = $this->getView($view); |
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if ($data->RecordCount() != 1) { |
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return -2; |
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} |
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$status = $this->beginTransaction(); |
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if ($status != 0) { |
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$this->rollbackTransaction(); |
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return -1; |
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} |
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$status = $this->_alterView($data, $name, $owner, $schema, $comment); |
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if ($status != 0) { |
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$this->rollbackTransaction(); |
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return $status; |
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} |
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return $this->endTransaction(); |
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} |
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/** |
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* Returns all details for a particular view or materialized view. |
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* |
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* @param string $view The name of the view or materialized to retrieve |
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* |
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* @return \PHPPgAdmin\ADORecordSet [Materialized] View info |
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*/ |
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public function getView($view) |
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{ |
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$c_schema = $this->_schema; |
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$this->clean($c_schema); |
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$this->clean($view); |
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$sql = " |
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SELECT c.relname, n.nspname, pg_catalog.pg_get_userbyid(c.relowner) AS relowner, |
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pg_catalog.pg_get_viewdef(c.oid, true) AS vwdefinition, |
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pg_catalog.obj_description(c.oid, 'pg_class') AS relcomment, |
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c.relkind |
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FROM pg_catalog.pg_class c |
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LEFT JOIN pg_catalog.pg_namespace n ON (n.oid = c.relnamespace) |
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WHERE (c.relname = '{$view}') AND n.nspname='{$c_schema}'"; |
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return $this->selectSet($sql); |
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} |
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/** |
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* Protected method which alter a view |
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* SHOULDN'T BE CALLED OUTSIDE OF A TRANSACTION. |
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* |
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* @param \PHPPgAdmin\ADORecordSet $vwrs The view recordSet returned by getView() |
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* @param string $name The new name for the view |
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* @param string $owner The new owner for the view |
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* @param string $schema Schema name |
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* @param string $comment The comment on the view |
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* |
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* @return int 0 success |
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*/ |
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protected function _alterView($vwrs, $name, $owner, $schema, $comment) |
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{ |
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$this->fieldArrayClean($vwrs->fields); |
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$type = ($vwrs->fields['relkind'] === 'm') ? 'MATERIALIZED VIEW' : 'VIEW'; |
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// Comment |
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if ($this->setComment($type, $vwrs->fields['relname'], '', $comment) != 0) { |
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return -4; |
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} |
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// Owner |
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$this->fieldClean($owner); |
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$status = $this->alterViewOwner($vwrs, $owner); |
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if ($status != 0) { |
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return -5; |
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} |
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// Rename |
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$this->fieldClean($name); |
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$status = $this->alterViewName($vwrs, $name); |
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if ($status != 0) { |
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return -3; |
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} |
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// Schema |
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$this->fieldClean($schema); |
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$status = $this->alterViewSchema($vwrs, $schema); |
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if ($status != 0) { |
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return -6; |
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} |
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return 0; |
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} |
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/** |
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* Alter a view's owner. |
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* |
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* @param \PHPPgAdmin\ADORecordSet $vwrs The view recordSet returned by getView() |
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* @param null|string $owner |
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* |
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* @return int 0 if operation was successful |
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* |
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* @internal param $name new view's owner |
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*/ |
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public function alterViewOwner($vwrs, $owner = null) |
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{ |
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$type = ($vwrs->fields['relkind'] === 'm') ? 'MATERIALIZED VIEW' : 'VIEW'; |
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/* $vwrs and $owner are cleaned in _alterView */ |
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if ((!empty($owner)) && ($vwrs->fields['relowner'] != $owner)) { |
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$f_schema = $this->_schema; |
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$this->fieldClean($f_schema); |
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// If owner has been changed, then do the alteration. We are |
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// careful to avoid this generally as changing owner is a |
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// superuser only function. |
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$sql = "ALTER ${type} \"{$f_schema}\".\"{$vwrs->fields['relname']}\" OWNER TO \"{$owner}\""; |
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return $this->execute($sql); |
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} |
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return 0; |
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} |
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/** |
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* Rename a view. |
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* |
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* @param \PHPPgAdmin\ADORecordSet $vwrs The view recordSet returned by getView() |
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* @param string $name The new view's name |
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* |
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* @return int 0 if operation was successful |
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*/ |
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public function alterViewName($vwrs, $name) |
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{ |
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$type = ($vwrs->fields['relkind'] === 'm') ? 'MATERIALIZED VIEW' : 'VIEW'; |
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// Rename (only if name has changed) |
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/* $vwrs and $name are cleaned in _alterView */ |
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if (!empty($name) && ($name != $vwrs->fields['relname'])) { |
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$f_schema = $this->_schema; |
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$this->fieldClean($f_schema); |
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$sql = "ALTER ${type} \"{$f_schema}\".\"{$vwrs->fields['relname']}\" RENAME TO \"{$name}\""; |
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$status = $this->execute($sql); |
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if ($status == 0) { |
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$vwrs->fields['relname'] = $name; |
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} else { |
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return $status; |
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} |
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} |
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return 0; |
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} |
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/** |
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* Alter a view's schema. |
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* |
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* @param \PHPPgAdmin\ADORecordSet $vwrs The view recordSet returned by getView() |
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* @param string $schema |
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* |
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* @return int 0 if operation was successful |
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* |
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* @internal param The $name new view's schema |
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*/ |
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public function alterViewSchema($vwrs, $schema) |
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{ |
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$type = ($vwrs->fields['relkind'] === 'm') ? 'MATERIALIZED VIEW' : 'VIEW'; |
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/* $vwrs and $schema are cleaned in _alterView */ |
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if (!empty($schema) && ($vwrs->fields['nspname'] != $schema)) { |
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$f_schema = $this->_schema; |
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$this->fieldClean($f_schema); |
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// If tablespace has been changed, then do the alteration. We |
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// don't want to do this unnecessarily. |
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$sql = "ALTER ${type} \"{$f_schema}\".\"{$vwrs->fields['relname']}\" SET SCHEMA \"{$schema}\""; |
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return $this->execute($sql); |
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} |
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return 0; |
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} |
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/** |
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* Drops a view. |
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* |
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* @param string $viewname The name of the view to drop |
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* @param string $cascade True to cascade drop, false to restrict |
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* |
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* @return int 0 if operation was successful |
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*/ |
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public function dropView($viewname, $cascade) |
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{ |
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$vwrs = $this->getView($viewname); |
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$type = ($vwrs->fields['relkind'] === 'm') ? 'MATERIALIZED VIEW' : 'VIEW'; |
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$f_schema = $this->_schema; |
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$this->fieldClean($f_schema); |
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$this->fieldClean($viewname); |
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$sql = "DROP ${type} \"{$f_schema}\".\"{$viewname}\""; |
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if ($cascade) { |
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$sql .= ' CASCADE'; |
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} |
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return $this->execute($sql); |
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} |
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abstract public function fieldClean(&$str); |
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abstract public function beginTransaction(); |
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abstract public function rollbackTransaction(); |
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abstract public function endTransaction(); |
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abstract public function execute($sql); |
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abstract public function setComment($obj_type, $obj_name, $table, $comment, $basetype = null); |
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350
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abstract public function selectSet($sql); |
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abstract public function clean(&$str); |
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abstract public function fieldArrayClean(&$arr); |
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} |
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