Improve the readability of the DBManager.instance() method
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Key: CASSANDRA-228
URL: https://issues.apache.org/jira/browse/CASSANDRA-228
Project: Cassandra
Issue Type: Improvement
Reporter: Edward Ribeiro
The DBManager class implements the singleton pattern using a Lock object, but
it could replace the Lock object by declaring the instance() method as
synchronized. Therefore, it avoids the race condition (as with Lock), but
improves the readability and reduces the size of the method. Below is the new
version of the method:
public static synchronized DBManager instance() throws IOException
{
if (dbMgr_ == null)
dbMgr_ = new DBManager();
return dbMgr_;
}
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