public override void Perform(SchemaChanges changes, IOutput output)
{
// This isn't really anything to do with pre-upgrade-hooks but there's no other good place to give this warning!
foreach (var query in QueryType.AllFrom(changes.Current))
{
if (query.State != null && query.State.Body.StartsWith("<FAIL>"))
{
output.Warning(query.State.Body.Substring(6));
}
}
foreach (var hook in PreUpgradeHookType.AllFrom(changes.Current))
{
var proc = QueryType.GetFrom(changes.Current, hook.ParentIdentifier);
if (proc.State == null || proc.State is QueryType.FunctionState || proc.State.Parameters.Any())
{
output.Warning("Cannot execute pre-upgrade hook " + proc.Name + ": stored procedure does not exist or has parameters.");
}
changes.Put(changes.SchemaDriver.GetExecuteProcSql(hook.ParentName));
if (changes.Desired.Get(hook) == null)
{
changes.Remove(null, hook);
}
}
}
public override void Perform(SchemaChanges changes, IOutput output)
{
foreach (var desired in QueryType.AllFrom(changes.Desired))
{
var current = changes.Current.Get(desired);
if (current != null && QueryType.IsEqual(current.State, desired.State, changes.DbDriver))
{
continue;
}
if (desired.State != null)
{
var body = desired.State.Body;
var parameters = desired.State.Parameters;
string createSql;
var functionState = desired.State as QueryType.FunctionState;
if (functionState != null)
{
createSql = changes.SchemaDriver.GetCreateFunctionSql(desired.Name, parameters, functionState.ReturnType, body);
}
else
{
createSql = changes.SchemaDriver.GetCreateProcSql(desired.Name, parameters, body);
}
changes.Put(createSql, desired);
}
else
{
if (current == null)
{
changes.Put(null, desired);
}
}
}
// Restore all pre-upgrade-hooks corresponding to procedures that have been successfully updated.
foreach (var upgradeHook in PreUpgradeHookType.AllFrom(changes.Desired))
{
var desiredProc = QueryType.GetFrom(changes.Desired, upgradeHook.ParentIdentifier);
var currentProc = changes.Current.Get(desiredProc);
if (currentProc != null && QueryType.IsEqual(currentProc.State, desiredProc.State, changes.DbDriver))
{
changes.Put(null, upgradeHook);
}
}
}