/// <summary>
/// Apply the migration to given migrable datacontext
/// </summary>
/// <param name="root">The migrable context root</param>
public bool ApplyMigrations(IMigrable root)
{
var hasDoneSomething = false;
this.migrations.ForEach(x =>
{
if (!root.MigrationHistory.HasMigration(x.Key))
{
this.SolveDependency(root, x.Value);
x.Value.Apply(root);
root.MigrationHistory.AddMigration(x.Key);
hasDoneSomething = true;
}
});
return hasDoneSomething;
}
private void SolveDependency(IMigrable root, IMigration migration)
{
foreach (var migrationId in migration.MigrationsNeeded.Where(x => !root.MigrationHistory.HasMigration(x)))
{
// For each dependency that needs to be solved, we solve the subdependencies
var dependency = this.migrations[migrationId];
this.SolveDependency(root, dependency);
dependency.Apply(root);
root.MigrationHistory.AddMigration(migrationId);
}
}
