function validateAgainst(\Tracker\Tabular\Schema $schema)
{
if ($this->isPrimary && $this->isReadOnly) {
throw new \Exception(tr('Primary Key fields cannot be read-only.'));
}
$selfCount = 0;
foreach ($schema->getColumns() as $column) {
if ($column->is($this->permName, $this->mode)) {
$selfCount++;
}
foreach ($this->incompatibilities as $entry) {
list($field, $mode) = $entry;
if ($column->is($field, $mode)) {
// Skip incompatibility if either field is read-only
if ($this->isReadOnly() || $column->isReadOnly()) {
continue;
}
throw new \Exception(tr('Column "%0" cannot co-exist with "%1".', $column->getEncodedHeader(), $this->getEncodedHeader()));
}
}
}
if ($selfCount > 1) {
throw new \Exception(tr('Column "%0:%1" found multiple times.', $this->permName, $this->mode));
}
}
