/**
* 构造
*
* @param config 数据库配置
*/
public PooledDataSource(DbConfig config) {
this.config = config;
freePool = new LinkedList<PooledConnection>();
int initialSize = config.getInitialSize();
try {
while (initialSize-- > 0) {
freePool.offer(newConnection());
}
} catch (SQLException e) {
throw new DbRuntimeException(e);
}
}
/**
* 直接从连接池中获取连接，如果池中无连接直接抛出异常
*
* @return PooledConnection
* @throws SQLException
*/
private PooledConnection getConnectionDirect() throws SQLException {
int maxActive = config.getMaxActive();
if (maxActive <= 0 || maxActive < this.activeCount) {
// 超过最大使用限制
throw new SQLException("In used Connection is more than Max Active.");
}
PooledConnection conn = freePool.poll();
if (null == conn) {
conn = this.newConnection();
}
activeCount++;
return conn.open();
}
/** 从数据库连接池中获取数据库连接对象 */
@Override
public synchronized Connection getConnection() throws SQLException {
return getConnection(config.getMaxWait());
}
