public DatabaseDiff Compare(Database db)
{
var diff = new DatabaseDiff();
diff.Db = db;
//compare database properties
foreach (DbProp p in from p in Props
let p2 = db.FindProp(p.Name)
where p.Script() != p2.Script()
select p) {
diff.PropsChanged.Add(p);
}
//get tables added and changed
foreach (Table t in Tables) {
Table t2 = db.FindTable(t.Name, t.Owner);
if (t2 == null) {
diff.TablesAdded.Add(t);
} else {
//compare mutual tables
TableDiff tDiff = t.Compare(t2);
if (tDiff.IsDiff) {
diff.TablesDiff.Add(tDiff);
}
}
}
//get deleted tables
foreach (Table t in db.Tables.Where(t => FindTable(t.Name, t.Owner) == null)) {
diff.TablesDeleted.Add(t);
}
//get procs added and changed
foreach (Routine r in Routines) {
Routine r2 = db.FindRoutine(r.Name, r.Schema);
if (r2 == null) {
diff.RoutinesAdded.Add(r);
} else {
//compare mutual procs
if (r.Text != r2.Text) {
diff.RoutinesDiff.Add(r);
}
}
}
//get procs deleted
foreach (Routine r in db.Routines.Where(r => FindRoutine(r.Name, r.Schema) == null)) {
diff.RoutinesDeleted.Add(r);
}
//get added and compare mutual foreign keys
foreach (ForeignKey fk in ForeignKeys) {
ForeignKey fk2 = db.FindForeignKey(fk.Name);
if (fk2 == null) {
diff.ForeignKeysAdded.Add(fk);
} else {
if (fk.ScriptCreate() != fk2.ScriptCreate()) {
diff.ForeignKeysDiff.Add(fk);
}
}
}
//get deleted foreign keys
foreach (ForeignKey fk in db.ForeignKeys.Where(fk => FindForeignKey(fk.Name) == null)) {
diff.ForeignKeysDeleted.Add(fk);
}
//get added and compare mutual assemblies
foreach (SqlAssembly a in Assemblies) {
SqlAssembly a2 = db.FindAssembly(a.Name);
if (a2 == null) {
diff.AssembliesAdded.Add(a);
} else {
if (a.ScriptCreate(this) != a2.ScriptCreate(db)) {
diff.AssembliesDiff.Add(a);
}
}
}
//get deleted assemblies
foreach (SqlAssembly a in db.Assemblies.Where(a => FindAssembly(a.Name) == null)) {
diff.AssembliesDeleted.Add(a);
}
//get added and compare mutual users
foreach (SqlUser u in Users) {
SqlUser u2 = db.FindUser(u.Name);
if (u2 == null) {
diff.UsersAdded.Add(u);
} else {
if (u.ScriptCreate(this) != u2.ScriptCreate(db)) {
diff.UsersDiff.Add(u);
}
}
}
//get deleted users
foreach (SqlUser u in db.Users.Where(u => FindUser(u.Name) == null)) {
diff.UsersDeleted.Add(u);
}
//get added and compare view indexes
foreach (Constraint c in ViewIndexes) {
Constraint c2 = db.FindViewIndex(c.Name);
if (c2 == null) {
diff.ViewIndexesAdded.Add(c);
} else {
if (c.Script() != c2.Script()) {
diff.ViewIndexesDiff.Add(c);
}
}
}
//get deleted view indexes
foreach (Constraint c in db.ViewIndexes.Where(c => FindViewIndex(c.Name) == null)) {
diff.ViewIndexesDeleted.Add(c);
}
return diff;
}