Elasticsearch create/move alias

gistfile1.txt

// Add/rename alias
if(currentIndex > -1)
{
	renameAlias(aliasName, buildIndexName(aliasName, currentIndex), indexName);
}
else
{
	elasticClient.admin().indices().prepareAliases().addAlias(indexName, aliasName).execute();
}

....

private boolean renameAlias(String aliasName, String oldIndexName, String newIndexName)
{
	AliasAction delete = new AliasAction(AliasAction.Type.REMOVE, oldIndexName, aliasName);
	AliasAction add = new AliasAction(AliasAction.Type.ADD, newIndexName, aliasName);
	return elasticClient.admin().indices().prepareAliases().addAliasAction(delete).addAliasAction(add).get().isAcknowledged();
}