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<?php
/**
* PHPPgAdmin v6.0.0-RC1
*/
namespace PHPPgAdmin\Database\Traits;
/**
* Common trait for trigger and rules manipulation.
*/
trait TriggerTrait
{
/**
* Grabs a single trigger.
*
* @param string $table The name of a table whose triggers to retrieve
* @param string $trigger The name of the trigger to retrieve
*
* @return \PHPPgAdmin\ADORecordSet A recordset
*/
public function getTrigger($table, $trigger)
{
$c_schema = $this->_schema;
$this->clean($c_schema);
$this->clean($table);
$this->clean($trigger);
$sql = "
SELECT * FROM pg_catalog.pg_trigger t, pg_catalog.pg_class c
WHERE t.tgrelid=c.oid AND c.relname='{$table}' AND t.tgname='{$trigger}'
AND c.relnamespace=(
SELECT oid FROM pg_catalog.pg_namespace
WHERE nspname='{$c_schema}')";
return $this->selectSet($sql);
}
/**
* Creates a trigger.
*
* @param string $tgname The name of the trigger to create
* @param string $table The name of the table
* @param string $tgproc The function to execute
* @param string $tgtime BEFORE or AFTER
* @param string $tgevent Event
* @param string $tgfrequency
* @param string $tgargs The function arguments
*
* @return int 0 if operation was successful
*/
public function createTrigger($tgname, $table, $tgproc, $tgtime, $tgevent, $tgfrequency, $tgargs)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($tgname);
$this->fieldClean($table);
$this->fieldClean($tgproc);
/* No Statement Level Triggers in PostgreSQL (by now) */
$sql = "CREATE TRIGGER \"{$tgname}\" {$tgtime}
{$tgevent} ON \"{$f_schema}\".\"{$table}\"
FOR EACH {$tgfrequency} EXECUTE PROCEDURE \"{$tgproc}\"({$tgargs})";
return $this->execute($sql);
}
/**
* Alters a trigger.
*
* @param string $table The name of the table containing the trigger
* @param string $trigger The name of the trigger to alter
* @param string $name The new name for the trigger
*
* @return int 0 if operation was successful
*/
public function alterTrigger($table, $trigger, $name)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($table);
$this->fieldClean($trigger);
$this->fieldClean($name);
$sql = "ALTER TRIGGER \"{$trigger}\" ON \"{$f_schema}\".\"{$table}\" RENAME TO \"{$name}\"";
return $this->execute($sql);
}
/**
* Drops a trigger.
*
* @param string $tgname The name of the trigger to drop
* @param string $table The table from which to drop the trigger
* @param bool $cascade True to cascade drop, false to restrict
*
* @return int 0 if operation was successful
*/
public function dropTrigger($tgname, $table, $cascade)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($tgname);
$this->fieldClean($table);
$sql = "DROP TRIGGER \"{$tgname}\" ON \"{$f_schema}\".\"{$table}\"";
if ($cascade) {
$sql .= ' CASCADE';
}
return $this->execute($sql);
}
/**
* Enables a trigger.
*
* @param string $tgname The name of the trigger to enable
* @param string $table The table in which to enable the trigger
*
* @return int 0 if operation was successful
*/
public function enableTrigger($tgname, $table)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($tgname);
$this->fieldClean($table);
$sql = "ALTER TABLE \"{$f_schema}\".\"{$table}\" ENABLE TRIGGER \"{$tgname}\"";
return $this->execute($sql);
}
/**
* Disables a trigger.
*
* @param string $tgname The name of the trigger to disable
* @param string $table The table in which to disable the trigger
*
* @return int 0 if operation was successful
*/
public function disableTrigger($tgname, $table)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($tgname);
$this->fieldClean($table);
$sql = "ALTER TABLE \"{$f_schema}\".\"{$table}\" DISABLE TRIGGER \"{$tgname}\"";
return $this->execute($sql);
}
// Rule functions
// Operator Class functions
/**
* Edits a rule on a table OR view.
*
* @param string $name The name of the new rule
* @param string $event SELECT, INSERT, UPDATE or DELETE
* @param string $table Table on which to create the rule
* @param string $where Where to execute the rule, '' indicates always
* @param bool $instead True if an INSTEAD rule, false otherwise
* @param string $type NOTHING for a do nothing rule, SOMETHING to use given action
* @param string $action The action to take
*
* @return int 0 if operation was successful
*/
public function setRule($name, $event, $table, $where, $instead, $type, $action)
{
return $this->createRule($name, $event, $table, $where, $instead, $type, $action, true);
}
// FTS functions
/**
* Creates a rule.
*
* @param string $name The name of the new rule
* @param string $event SELECT, INSERT, UPDATE or DELETE
* @param string $table Table on which to create the rule
* @param string $where When to execute the rule, '' indicates always
* @param bool $instead True if an INSTEAD rule, false otherwise
* @param string $type NOTHING for a do nothing rule, SOMETHING to use given action
* @param string $action The action to take
* @param bool $replace (optional) True to replace existing rule, false
* otherwise
*
* @return int 0 if operation was successful
*/
public function createRule($name, $event, $table, $where, $instead, $type, $action, $replace = false)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($name);
$this->fieldClean($table);
if (!in_array($event, $this->rule_events, true)) {
return -1;
}
$sql = 'CREATE';
if ($replace) {
$sql .= ' OR REPLACE';
}
$sql .= " RULE \"{$name}\" AS ON {$event} TO \"{$f_schema}\".\"{$table}\"";
// Can't escape WHERE clause
if ($where != '') {
$sql .= " WHERE {$where}";
}
$sql .= ' DO';
if ($instead) {
$sql .= ' INSTEAD';
}
if ($type == 'NOTHING') {
$sql .= ' NOTHING';
} else {
$sql .= " ({$action})";
}
return $this->execute($sql);
}
/**
* Removes a rule from a table OR view.
*
* @param string $rule The rule to drop
* @param string $relation The relation from which to drop
* @param string $cascade True to cascade drop, false to restrict
*
* @return int 0 if operation was successful
*/
public function dropRule($rule, $relation, $cascade)
{
$f_schema = $this->_schema;
$this->fieldClean($f_schema);
$this->fieldClean($rule);
$this->fieldClean($relation);
$sql = "DROP RULE \"{$rule}\" ON \"{$f_schema}\".\"{$relation}\"";
if ($cascade) {
$sql .= ' CASCADE';
}
return $this->execute($sql);
}
abstract public function fieldClean(&$str);
abstract public function beginTransaction();
abstract public function rollbackTransaction();
abstract public function endTransaction();
abstract public function execute($sql);
abstract public function setComment($obj_type, $obj_name, $table, $comment, $basetype = null);
abstract public function selectSet($sql);
abstract public function clean(&$str);
abstract public function phpBool($parameter);
abstract public function hasCreateTableLikeWithConstraints();
abstract public function hasCreateTableLikeWithIndexes();
abstract public function hasTablespaces();
abstract public function delete($table, $conditions, $schema = '');
abstract public function fieldArrayClean(&$arr);
abstract public function hasCreateFieldWithConstraints();
abstract public function getAttributeNames($table, $atts);
}
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