/// <summary>
/// Get database execute command
/// </summary>
/// <param name="command">Command</param>
/// <returns>Return database execute command</returns>
DatabaseExecuteCommand GetExecuteDbCommand(IQueryTranslator queryTranslator, RdbCommand command)
{
DatabaseExecuteCommand GetTextCommand()
{
return(new DatabaseExecuteCommand()
{
CommandText = command.CommandText,
Parameters = SqlServerFactory.ParseParameters(command.Parameters),
CommandType = SqlServerFactory.GetCommandType(command),
ForceReturnValue = command.MustReturnValueOnSuccess,
HasPreScript = true
});
}
if (command.ExecuteMode == CommandExecuteMode.CommandText)
{
return(GetTextCommand());
}
DatabaseExecuteCommand executeCommand;
switch (command.OperateType)
{
case OperateType.Insert:
executeCommand = GetInsertExecuteDbCommand(queryTranslator, command);
break;
case OperateType.Update:
executeCommand = GetUpdateExecuteDbCommand(queryTranslator, command);
break;
case OperateType.Delete:
executeCommand = GetDeleteExecuteDbCommand(queryTranslator, command);
break;
default:
executeCommand = GetTextCommand();
break;
}
return(executeCommand);
}
/// <summary>
/// Get delete execute command
/// </summary>
/// <param name="translator">Translator</param>
/// <param name="command">Command</param>
/// <returns>Return delete execute command</returns>
DatabaseExecuteCommand GetDeleteExecuteDbCommand(IQueryTranslator translator, RdbCommand command)
{
#region query translate
var tranResult = translator.Translate(command.Query);
string conditionString = string.Empty;
if (!string.IsNullOrWhiteSpace(tranResult.ConditionString))
{
conditionString = $"WHERE {tranResult.ConditionString}";
}
string preScript = tranResult.PreScript;
string joinScript = tranResult.AllowJoin ? tranResult.JoinScript : string.Empty;
#endregion
#region script
string objectName = DataManager.GetEntityObjectName(DatabaseServerType.SQLServer, command.EntityType, command.ObjectName);
string cmdText = $"{preScript}DELETE {translator.ObjectPetName} FROM {SqlServerFactory.WrapKeyword(objectName)} AS {translator.ObjectPetName}{joinScript} {conditionString};";
#endregion
#region parameter
CommandParameters parameters = SqlServerFactory.ParseParameters(command.Parameters) ?? new CommandParameters();
var queryParameters = SqlServerFactory.ParseParameters(tranResult.Parameters);
parameters.Union(queryParameters);
#endregion
return(new DatabaseExecuteCommand()
{
CommandText = cmdText,
CommandType = SqlServerFactory.GetCommandType(command),
ForceReturnValue = command.MustReturnValueOnSuccess,
Parameters = parameters,
HasPreScript = !string.IsNullOrWhiteSpace(preScript)
});
}
/// <summary>
/// Get insert execute DbCommand
/// </summary>
/// <param name="translator">Translator</param>
/// <param name="command">Command</param>
/// <returns>Return insert execute command</returns>
DatabaseExecuteCommand GetInsertExecuteDbCommand(IQueryTranslator translator, RdbCommand command)
{
string objectName = DataManager.GetEntityObjectName(DatabaseServerType.SQLServer, command.EntityType, command.ObjectName);
var fields = DataManager.GetEditFields(DatabaseServerType.SQLServer, command.EntityType);
var fieldCount = fields.GetCount();
var insertFormatResult = SqlServerFactory.FormatInsertFields(fieldCount, fields, command.Parameters, translator.ParameterSequence);
if (insertFormatResult == null)
{
return(null);
}
string cmdText = $"INSERT INTO {SqlServerFactory.WrapKeyword(objectName)} ({string.Join(",", insertFormatResult.Item1)}) VALUES ({string.Join(",", insertFormatResult.Item2)});";
CommandParameters parameters = insertFormatResult.Item3;
translator.ParameterSequence += fieldCount;
return(new DatabaseExecuteCommand()
{
CommandText = cmdText,
CommandType = SqlServerFactory.GetCommandType(command),
ForceReturnValue = command.MustReturnValueOnSuccess,
Parameters = parameters
});
}
/// <summary>
/// Get update execute command
/// </summary>
/// <param name="translator">Translator</param>
/// <param name="command">Command</param>
/// <returns>Return update execute command</returns>
DatabaseExecuteCommand GetUpdateExecuteDbCommand(IQueryTranslator translator, RdbCommand command)
{
#region query translate
var tranResult = translator.Translate(command.Query);
string conditionString = string.Empty;
if (!string.IsNullOrWhiteSpace(tranResult.ConditionString))
{
conditionString = $"WHERE {tranResult.ConditionString}";
}
string preScript = tranResult.PreScript;
string joinScript = tranResult.AllowJoin ? tranResult.JoinScript : string.Empty;
#endregion
#region script
CommandParameters parameters = SqlServerFactory.ParseParameters(command.Parameters) ?? new CommandParameters();
string objectName = DataManager.GetEntityObjectName(DatabaseServerType.SQLServer, command.EntityType, command.ObjectName);
var fields = SqlServerFactory.GetFields(command.EntityType, command.Fields);
int parameterSequence = translator.ParameterSequence;
List <string> updateSetArray = new List <string>();
foreach (var field in fields)
{
var parameterValue = parameters.GetParameterValue(field.PropertyName);
var parameterName = field.PropertyName;
string newValueExpression = string.Empty;
if (parameterValue != null)
{
parameterSequence++;
parameterName = SqlServerFactory.FormatParameterName(parameterName, parameterSequence);
parameters.Rename(field.PropertyName, parameterName);
if (parameterValue is IModifyValue)
{
var modifyValue = parameterValue as IModifyValue;
parameters.ModifyValue(parameterName, modifyValue.Value);
if (parameterValue is CalculateModifyValue)
{
var calculateModifyValue = parameterValue as CalculateModifyValue;
string calChar = SqlServerFactory.GetCalculateChar(calculateModifyValue.Operator);
newValueExpression = $"{translator.ObjectPetName}.{SqlServerFactory.WrapKeyword(field.FieldName)}{calChar}{SqlServerFactory.ParameterPrefix}{parameterName}";
}
}
}
if (string.IsNullOrWhiteSpace(newValueExpression))
{
newValueExpression = $"{SqlServerFactory.ParameterPrefix}{parameterName}";
}
updateSetArray.Add($"{translator.ObjectPetName}.{SqlServerFactory.WrapKeyword(field.FieldName)}={newValueExpression}");
}
string cmdText = $"{preScript}UPDATE {translator.ObjectPetName} SET {string.Join(",", updateSetArray)} FROM {SqlServerFactory.WrapKeyword(objectName)} AS {translator.ObjectPetName} {joinScript} {conditionString};";
translator.ParameterSequence = parameterSequence;
#endregion
#region parameter
var queryParameters = SqlServerFactory.ParseParameters(tranResult.Parameters);
parameters.Union(queryParameters);
#endregion
return(new DatabaseExecuteCommand()
{
CommandText = cmdText,
CommandType = SqlServerFactory.GetCommandType(command),
ForceReturnValue = command.MustReturnValueOnSuccess,
Parameters = parameters,
HasPreScript = !string.IsNullOrWhiteSpace(preScript)
});
}
