/**
* {@inheritdoc}
*/
public function getDefaultValue()
{
$defaultValue = parent::getDefaultValue();
if (in_array($this->type, $this->forbiddenDefaults)) {
return null;
}
return $defaultValue;
}
/**
* Export default value from column schema into scalar form (which we can store in cache).
*
* @param AbstractColumn $column
* @return mixed|null
*/
private function exportDefault(AbstractColumn $column)
{
if (in_array($column->getName(), $this->tableSchema->getPrimaryKeys())) {
//Column declared as primary key, nothing to do with default values
return null;
}
$defaultValue = $column->getDefaultValue();
if ($defaultValue instanceof FragmentInterface) {
//We can't cache values like that
return null;
}
if (is_null($defaultValue) && !$column->isNullable()) {
return $this->castDefault($column);
}
return $defaultValue;
}
/**
* Must compare two instances of AbstractColumn.
*
* @param self $initial
* @return bool
*/
public function compare(self $initial)
{
$normalized = clone $initial;
$normalized->declared = $this->declared;
if ($this == $normalized) {
return true;
}
$columnVars = get_object_vars($this);
$dbColumnVars = get_object_vars($normalized);
$difference = [];
foreach ($columnVars as $name => $value) {
if ($name == 'defaultValue') {
//Default values has to compared using type-casted value
if ($this->getDefaultValue() != $initial->getDefaultValue()) {
$difference[] = $name;
}
continue;
}
if ($value != $dbColumnVars[$name]) {
$difference[] = $name;
}
}
return empty($difference);
}
