/// <summary>
/// Example of how to create migration scripts from an old legacy databse
/// </summary>
/// <param name="newServerDbName"></param>
/// <param name="doCreate"></param>
/// <returns></returns>
public static List <Sql> GenerateDataMigrationScripts(string newServerDbName, bool doCreate)
{
// generate models off old database with underscorized naming (connstr = guru)
// newServerDbName = thatcher.rinnai
var result = new List <Sql>();
var models = ActiveRecordDatabaseGenerator.GetModelInstances();
foreach (ActiveRecord model in models)
{
var tableName = model.GetTableName().SqlizeName().value;
if (!tableName.Contains("rn_"))
{
continue;
}
if (tableName.Contains("homebanner"))
{
continue;
}
if (tableName.Contains("filetracking"))
{
continue;
}
if (tableName.Contains("rn_tracking"))
{
continue;
}
if (tableName.Contains("rn_emailtemplate"))
{
continue;
}
if (tableName.Contains("rn_categorybanner"))
{
continue;
}
if (tableName.Contains("rn_pagecontent"))
{
continue;
}
if (tableName.Contains("rn_promo"))
{
continue;
}
if (tableName.Contains("rn_pagesection"))
{
continue;
}
if (tableName.Contains("banner"))
{
continue;
}
string sourceTable, destTable;
sourceTable = tableName;
destTable = model.GetType().Name;
destTable = destTable.Replace("tradesmart", "_tradesmart_");
destTable = destTable.Replace("centre", "_centre_");
destTable = destTable.Replace("subcategory", "_subcategory_");
destTable = destTable.Replace("training", "_training_");
destTable = destTable.Replace("file", "_file_");
destTable = destTable.Replace("association", "_association_");
destTable = destTable.Replace("group", "_group_");
destTable = destTable.Replace("manuals", "_manuals_");
destTable = destTable.Replace("archive", "_archive_");
destTable = destTable.Replace("rn_tn", "rn_trade_");
destTable = destTable.Remove("rn_").PascalCase();
bool hasID = false;
var fields = new DelimitedString(",");
var destfields = new DelimitedString(",");
var creates = "" + destTable + "ID [int] IDENTITY(1,1) NOT NULL, ";
foreach (var field in model.GetFields())
{
fields += field.Name.SqlizeName().value;
var newFieldName = field.Name;
foreach (var repl in "meta,centre,areas,covered,subcategory,training,retailer,tradesmart,consumer,accessory,group,price,email,size,section,path,name,manuals,product,banner,studies,performance,compare,text,study,archive,video,type,manuals,content,outlet".Split(','))
{
newFieldName = newFieldName.Replace(repl, "_" + repl + "_");
}
newFieldName = newFieldName.Replace("dateandtime", "date_and_time");
newFieldName = Fmt.PascalCase(newFieldName);
newFieldName = newFieldName.Replace("Id", "ID");
if (newFieldName == "ID" && destTable == "Country")
{
newFieldName = "Code";
}
else if (newFieldName == "ID")
{
newFieldName = destTable + "ID";
hasID = true;
}
if (newFieldName == "Priority")
{
newFieldName = "SortPosition";
}
if (newFieldName == "Image")
{
newFieldName = "Picture";
}
if (newFieldName == "Created")
{
newFieldName = "DateAdded";
}
destfields += newFieldName;
if (field.Name != "id" || !hasID)
{
creates += newFieldName + " " + field.GetSqlDataTypeDeclaration().Replace("tinyint", "bit").Replace("smallint", "int").Replace("char", "varchar").Replace("varchar", "nvarchar").Replace("varnvarchar", "nvarchar").Replace("text", "nvarchar(max)").Replace("NOT NULL", "") + ", ";
}
}
if (doCreate)
{
var sql2 = new Sql("create table " + destTable + " (<b>" + creates + "</b> CONSTRAINT [pk_" + destTable + "] PRIMARY KEY CLUSTERED (" + destTable + "ID ASC));");
result.Add(sql2);
}
var sql = new Sql("delete from " + destTable + ";"); // maybe use trunc table
if (hasID)
{
sql.Add("set identity_insert " + destTable + " on;");
}
sql.Add("insert into " + destTable + " (" + destfields + ") select " + fields + " from RinnaiOld.dbo." + sourceTable + ";");
if (hasID)
{
sql.Add("set identity_insert " + destTable + " off;");
}
result.Add(sql);
}
foreach (var migration in result)
{
Web.WriteLine(migration.ToString());
}
return(result);
}
