/**
* Builds the DDL SQL to add an Index.
*
* @param Index $index
* @return string
*/
public function getAddIndexDDL(Index $index)
{
// don't create index form primary key
if ($this->getPrimaryKeyName($index->getTable()) == $this->quoteIdentifier($index->getName())) {
return "";
}
$pattern = "\nCREATE %sINDEX %s ON %s (%s)%s;\n";
return sprintf($pattern, $index->getIsUnique() ? 'UNIQUE ' : '', $this->quoteIdentifier($index->getName()), $this->quoteIdentifier($index->getTable()->getName()), $this->getColumnListDDL($index->getColumns()), $this->generateBlockStorage($index));
}
protected function getIndexType(Index $index)
{
$type = '';
$vendorInfo = $index->getVendorInfoForType($this->getDatabaseType());
if ($vendorInfo && $vendorInfo->getParameter('Index_type')) {
$type = $vendorInfo->getParameter('Index_type') . ' ';
} elseif ($index->getIsUnique()) {
$type = 'UNIQUE ';
}
return $type;
}
/**
* Builds the DDL SQL for an Index object.
*
* @param Index $index
* @return string
*/
public function getIndexDDL(Index $index)
{
return sprintf('%sINDEX %s (%s)', $index->getIsUnique() ? 'UNIQUE ' : '', $this->quoteIdentifier($index->getName()), $this->getColumnListDDL($index->getColumns()));
}