public static TriggerTemplate Create(EnumTriggerType iTriggerType)
{
TriggerTemplate trigTemplate = new TriggerTemplate(iTriggerType);
string configOption = GetTriggerConfiguration(iTriggerType);
var trigTemplateFile = ConfigurationManager.AppSettings["TriggerTemplateXML"];
var doc = XDocument.Load(trigTemplateFile);
trigTemplate.TriggerScriptDirective = (string)doc.Descendants("TriggerScriptDirective")
.Descendants("TriggerScript")
.First()
.Attribute("directive");
var listOfConfiguration = doc.Descendants(configOption);
trigTemplate.TriggerCreateSyntax = (string)listOfConfiguration.Descendants("TriggerCreateSyntax")
.First()
.Attribute("syntax");
trigTemplate.TriggerBodySyntax = (string)listOfConfiguration.Descendants("TriggerBodySyntax")
.First()
.Attribute("syntax");
trigTemplate.TriggerBodyCondition = (string)listOfConfiguration.Descendants("TriggerBodyCondition")
.First()
.Attribute("syntax");
trigTemplate.InsertHistorytable = (string)listOfConfiguration.Descendants("Historytable")
.First()
.Attribute("flag")
;
trigTemplate.HistoryTableInsert = (string)listOfConfiguration.Descendants("Historytable")
.First()
.Attribute("syntax")
;
trigTemplate.HistoryTablequalifier = (string)listOfConfiguration.Descendants("Historytable")
.First()
.Attribute("qualifier")
;
return(trigTemplate);
}
private static string BuildHistTableClause(DBTable tab, TriggerTemplate trig)
{
// Generally column list in history is replica of main table + few additions
// Concatinate the columns list with "," sperator
var hist_column_list = tab.ColumnList.Aggregate((a, c) => string.Join(",\n\t\t", a, c));
// Create value list with "," sperator. Depending upon the trigger type
// The main table values are accessed via OLD or NEW qualifier
var value_column_list = trig.HistoryTablequalifier + "." + tab.ColumnList.Aggregate((a, c) => string.Join(",\n\t\t", a, trig.HistoryTablequalifier + "." + c));
//Replace the history table insert for actual history table, column list and value list
var trihistory = trig.HistoryTableInsert.Replace("{hist_table}", tab.HistoryTableName);
trihistory = trihistory.Replace("{column_list}", hist_column_list);
trihistory = trihistory.Replace("{value_list}", value_column_list);
return(trihistory);
}
