/// <summary>
/// 初始化Sql语句参数类
/// </summary>
/// <param name="database">数据库</param>
/// <param name="columnName">字段名</param>
/// <param name="action">赋值操作</param>
private DataParameter(AbstractDatabase database, String columnName, String action)
{
this._parameter = new SqlParameter();
this._parameter.SourceColumn = columnName;
this._parameter.Value = action;
this._isUseParameter = false;
}
/// <summary>
/// 创建新的Sql语句参数类
/// </summary>
/// <param name="database">数据库</param>
/// <param name="columnName">字段名</param>
/// <param name="parameterIndex">参数索引</param>
/// <param name="dataType">字段类型</param>
/// <param name="value">赋值内容</param>
/// <returns>Sql语句参数类</returns>
internal static DataParameter InternalCreate(AbstractDatabase database, String columnName, String parameterIndex, DataType dataType, Object value)
{
DataParameter param = new DataParameter(database, columnName, parameterIndex, value);
param._parameter.DbType = DataParameter.GetDbType(dataType);
return(param);
}
/// <summary>
/// 获取数据库连接
/// </summary>
/// <param name="db">数据库</param>
/// <returns>数据库连接</returns>
internal static DatabaseConnectionWrapper GetConnection(AbstractDatabase db)
{
SystemTransaction currentTransaction = SystemTransaction.Current;
if (currentTransaction == null)
{
return(null);
}
Dictionary <SystemTransaction, Dictionary <String, DatabaseConnectionWrapper> > obj;
Monitor.Enter(obj = TransactionConnections);
Dictionary <String, DatabaseConnectionWrapper> connectionList;
try
{
if (!TransactionConnections.TryGetValue(currentTransaction, out connectionList))
{
connectionList = new Dictionary <String, DatabaseConnectionWrapper>();
TransactionConnections.Add(currentTransaction, connectionList);
currentTransaction.TransactionCompleted += new TransactionCompletedEventHandler(TransactionScopeConnections.OnTransactionCompleted);
}
}
finally
{
Monitor.Exit(obj);
}
Dictionary <String, DatabaseConnectionWrapper> obj2;
Monitor.Enter(obj2 = connectionList);
DatabaseConnectionWrapper connection;
try
{
if (!connectionList.TryGetValue(db.ConnectionString, out connection))
{
connection = db.InternalGetConnection();
connectionList.Add(db.ConnectionString, connection);
}
connection.AddRef();
}
finally
{
Monitor.Exit(obj2);
}
return(connection);
}
/// <summary>
/// 初始化Sql语句参数类
/// </summary>
/// <param name="database">数据库</param>
/// <param name="columnName">字段名</param>
/// <param name="parameterIndex">参数索引</param>
/// <param name="value">赋值内容</param>
private DataParameter(AbstractDatabase database, String columnName, String parameterIndex, Object value)
{
this._parameter = new SqlParameter();
this._parameter.SourceColumn = columnName;
this._parameter.ParameterName = database.InternalGetParameterName("PN_IDX_" + parameterIndex);
if (value == null)
{
this._parameter.Value = DBNull.Value;
}
else if (value is DateTime)
{
DateTime dt = (DateTime)value;
this._parameter.Value = dt.ToString("yyyy-MM-dd HH:mm:ss");
}
else
{
this._parameter.Value = value;
}
this._isUseParameter = true;
}
/// <summary>
/// 创建新的Sql语句参数类
/// </summary>
/// <param name="database">数据库</param>
/// <param name="columnName">字段名</param>
/// <param name="action">赋值操作</param>
/// <returns>Sql语句参数类</returns>
internal static DataParameter InternalCreateCustomAction(AbstractDatabase database, String columnName, String action)
{
return(new DataParameter(database, columnName, action));
}
