/**
* Add index to table
*
* @param Index $index
* @return Table
*/
protected function _addIndex(Index $index)
{
// check for duplicates
$c = new Comparator();
foreach ($this->_indexes as $existingIndex) {
if ($c->diffIndex($index, $existingIndex) == false) {
return $this;
}
}
$indexName = $index->getName();
$indexName = strtolower($indexName);
if (isset($this->_indexes[$indexName]) || $this->_primaryKeyName != false && $index->isPrimary()) {
throw SchemaException::indexAlreadyExists($indexName);
}
if ($index->isPrimary()) {
$this->_primaryKeyName = $indexName;
}
$this->_indexes[$indexName] = $index;
return $this;
}
