public override void BeginRead()
{
_readIsFinished = false;
string[] parts = _connectionString.Split('@');
_dbConnectionString = parts[0];
try
{
using (IDbConnection conn = DbConnectionFactory.CreateDbConnection(parts[0]))
{
if (conn == null)//数据库连接已经关闭或链接池没有可用连接
{
return;
}
conn.Open();
_reader = VectorFeatureSpatialDbReaderFactory.GetVectorFeatureSpatialDbReader(conn,
parts[1],
_allowReadAllAtFirst,
_argOfLeveling);
}
}
catch (Exception ex)
{
Log.WriterException(ex);
}
}
public void Dispose()
{
if (_reader != null)
{
_reader.Dispose();
_reader = null;
}
}
public override void Dispose()
{
base.Dispose();
if (_reader != null)
{
_reader.Dispose();
_reader = null;
}
}
private void Init()
{
using (IDbConnection dbConn = DbConnectionFactory.CreateDbConnection(_connstring))
{
if (dbConn == null)
{
return;
}
dbConn.Open();
_reader = new VectorFeatureSpatialDbReader(dbConn, _datatable);
}
}
public override void EndRead()
{
try
{
if (_reader != null)
{
_reader.Dispose();
_reader = null;
}
}
finally
{
_readIsFinished = true;
_isReady = false;
}
}
