/// <summary>
/// 输出条件语句
/// </summary>
/// <returns>条件语句</returns>
public override String ToString()
{
String format = String.Format("({0})", SqlOperators.InternalGetOperatorFormat(this._operator));
Int32 paramCount = ((Byte)this._operator) / 100;
if (paramCount == 0 && this._parameterOne != null)
{
return(String.Format(format, this._parameterOne.ColumnName));
}
else if (paramCount == 1 && this._parameterOne != null)
{
return(String.Format(format, this._parameterOne.ColumnName,
(this._parameterOne.IsUseParameter ? this._parameterOne.ParameterName : this._parameterOne.Value.ToString())));
}
else if (paramCount == 2 && this._parameterOne != null && this._parameterTwo != null)
{
return(String.Format(format, this._parameterOne.ColumnName,
(this._parameterOne.IsUseParameter ? this._parameterOne.ParameterName : this._parameterOne.Value.ToString()),
(this._parameterTwo.IsUseParameter ? this._parameterTwo.ParameterName : this._parameterTwo.Value.ToString())));
}
else
{
return(String.Empty);
}
}
/// <summary>
/// 输出条件语句
/// </summary>
/// <returns>条件语句</returns>
public override String GetClauseText()
{
if (this._command == null)
{
return(String.Empty);
}
String format = String.Format("({0})", SqlOperators.InternalGetOperatorFormat(this._operator));
return(String.Format(format, this._columnName, '(' + this._command.GetCommandText() + ')'));
}