/**
* Does an optimization cycle for each UPDATE event
* @param string $event
* @param RedBean_OODBBean $bean
*/
public function onEvent($event, $bean)
{
try {
if ($event == "update") {
$arr = $bean->export();
unset($arr["id"]);
if (count($arr) == 0) {
return;
}
$table = $this->adapter->escape($bean->getMeta("type"));
$columns = array_keys($arr);
$column = $this->adapter->escape($columns[array_rand($columns)]);
$value = $arr[$column];
$type = $this->writer->scanType($value);
$fields = $this->writer->getColumns($table);
if (!in_array($column, array_keys($fields))) {
return;
}
$typeInField = $this->writer->code($fields[$column]);
if ($type < $typeInField) {
$type = $this->writer->typeno_sqltype[$type];
$this->adapter->exec("alter table `{$table}` add __test " . $type);
$this->adapter->exec("update `{$table}` set __test=`{$column}`");
$diff = $this->adapter->getCell("select\n\t\t\t\t\t\t\tcount(*) as df from `{$table}` where\n\t\t\t\t\t\t\tstrcmp(`{$column}`,__test) != 0");
if (!$diff) {
$this->adapter->exec("alter table `{$table}` change `{$column}` `{$column}` " . $type);
}
$this->adapter->exec("alter table `{$table}` drop __test");
}
}
} catch (RedBean_Exception_SQL $e) {
//optimizer might make mistakes, dont care..
}
}
/**
* Does an optimization cycle for each UPDATE event.
* @param string $event
* @param RedBean_OODBBean $bean
*/
public function onEvent($event, $bean)
{
try {
if ($event == "update") {
$arr = $bean->export();
unset($arr["id"]);
if (count($arr) == 0) {
return;
}
$table = $this->adapter->escape($bean->getMeta("type"));
$columns = array_keys($arr);
//Select a random column for optimization.
$column = $this->adapter->escape($columns[array_rand($columns)]);
$value = $arr[$column];
$type = $this->writer->scanType($value);
$fields = $this->writer->getColumns($table);
if (!in_array($column, array_keys($fields))) {
return;
}
$typeInField = $this->writer->code($fields[$column]);
//Is the type too wide?
if ($type < $typeInField) {
try {
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " drop __test");
} catch (Exception $e) {
}
//Try to re-fit the entire column; by testing it.
$type = $this->writer->typeno_sqltype[$type];
//Add a test column.
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " add __test " . $type);
//Copy the values and see if there are differences.
@$this->adapter->exec("update " . $this->writer->noKW($table) . " set __test=" . $this->writer->noKW($column) . "");
$rows = $this->adapter->get("select " . $this->writer->noKW($column) . " as a, __test as b from " . $this->writer->noKW($table));
$diff = 0;
foreach ($rows as $row) {
$diff += $row["a"] != $row["b"];
}
if (!$diff) {
//No differences; shrink column.
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " change " . $this->writer->noKW($column) . " " . $this->writer->noKW($column) . " " . $type);
}
//Throw away test column; we don't need it anymore!
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " drop __test");
} else {
$this->MySQLSpecificColumns($table, $column, $fields[$column], $value);
}
}
} catch (RedBean_Exception_SQL $e) {
//optimizer might make mistakes, don't care.
//echo $e->getMessage()."<br>";
}
}
/**
* Does an optimization cycle for each UPDATE event.
* @param string $event
* @param RedBean_OODBBean $bean
*/
public function onEvent($event, $bean)
{
try {
if ($event == "update") {
$arr = $bean->export();
unset($arr["id"]);
if (count($arr) == 0) {
return;
}
$table = $this->adapter->escape($bean->getMeta("type"));
$columns = array_keys($arr);
$column = $this->adapter->escape($columns[array_rand($columns)]);
$value = $arr[$column];
$type = $this->writer->scanType($value);
$fields = $this->writer->getColumns($table);
if (!in_array($column, array_keys($fields))) {
return;
}
$typeInField = $this->writer->code($fields[$column]);
if ($type < $typeInField) {
try {
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " drop __test");
} catch (Exception $e) {
}
$type = $this->writer->typeno_sqltype[$type];
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " add __test " . $type);
@$this->adapter->exec("update " . $this->writer->noKW($table) . " set __test=" . $this->writer->noKW($column) . "");
$rows = $this->adapter->get("select " . $this->writer->noKW($column) . " as a, __test as b from " . $this->writer->noKW($table));
$diff = 0;
foreach ($rows as $row) {
$diff += $row["a"] != $row["b"];
}
if (!$diff) {
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " change " . $this->writer->noKW($column) . " " . $this->writer->noKW($column) . " " . $type);
}
@$this->adapter->exec("alter table " . $this->writer->noKW($table) . " drop __test");
} else {
$this->MySQLSpecificColumns($table, $column, $fields[$column], $value);
}
}
} catch (RedBean_Exception_SQL $e) {
}
}
