/// <summary>
/// Do the actual leg-work of installing a package.
/// </summary>
/// <param name="package">The package to be installed or upgraded.</param>
/// <param name="systemInstall">Specifies if this is a system install. If true certain safety checks are bypassed.</param>
private void InstallPackage(Package package, Boolean systemInstall)
{
PackageInstaller installer = new PackageInstaller(this);
PackageVersion version = null;
Package oldPackage = null;
Database db;
Migration mig;
Boolean LocalTransaction = false;
//
// Verify package dependencies.
//
try
{
if (systemInstall == false)
{
installer.VerifyDependenciesForInstall(package);
}
}
catch (PackageVersionException) { throw; }
catch (PackageDependencyException) { throw; }
//
// Begin the SQL Transaction.
//
if (Command.Transaction == null)
{
Command.Transaction = Connection.BeginTransaction();
LocalTransaction = true;
}
db = new Database(Command);
//
// Begin the install process.
//
try
{
if (systemInstall == false)
{
//
// Get the previous package and the previous package version.
//
oldPackage = GetInstalledPackage(package.Info.PackageName);
version = (oldPackage != null ? oldPackage.Info.Version : null);
}
//
// Migrate the database to the new version.
//
try
{
mig = installer.MigrationForPackage(package);
if (mig != null)
{
mig.Upgrade(db, version);
}
}
catch (Exception e)
{
throw new DatabaseMigrationException("Unable to install the database changes.", e);
}
//
// Install all the new files, pages, modules, etc.
//
try
{
installer.InstallPackageFiles(package, oldPackage);
installer.InstallPackageModules(package, oldPackage);
installer.InstallPackagePages(package, oldPackage);
}
catch (IOException) { throw; }
catch (Exception) { throw; }
//
// Configure this package first by itself and then for each
// dependency it has.
//
if (mig != null)
{
try
{
mig.Configure(db, version, null);
foreach (PackageRequirement pkg in package.Info.Requires)
{
mig.Configure(db, version, pkg.Name);
}
foreach (PackageRecommendation pkg in package.Info.Recommends)
{
mig.Configure(db, version, pkg.Name);
}
}
catch (Exception e)
{
throw new DatabaseMigrationException("Unable to configure the database changes.", e);
}
}
//
// Configure all packages that recommend this package.
//
try
{
foreach (String dependantName in PackagesRecommending(package.Info.PackageName))
{
Migration mi2 = installer.MigrationForPackage(GetInstalledPackage(dependantName));
if (mi2 != null)
{
mi2.Configure(db, null, package.Info.PackageName);
}
}
}
catch (Exception e)
{
throw new DatabaseMigrationException("Unable to re-configure dependent packages.", e);
}
//
// Store the Package information in the database.
//
if (oldPackage != null)
{
Command.CommandType = CommandType.Text;
Command.CommandText = "DELETE FROM [cust_rc_packager_packages] WHERE [name] = @Name";
Command.Parameters.Clear();
Command.Parameters.Add(new SqlParameter("@Name", package.Info.PackageName));
Command.ExecuteNonQuery();
}
Command.CommandType = CommandType.Text;
Command.CommandText = "INSERT INTO [cust_rc_packager_packages] ([created_by], [modified_by], [name], [package]) VALUES ('Package Manager', 'Package Manager', @Name, @Package)";
Command.Parameters.Clear();
Command.Parameters.Add(new SqlParameter("@Name", package.Info.PackageName));
Command.Parameters.Add(new SqlParameter("@Package", new SqlXml(new XmlNodeReader(package.XmlPackage))));
Command.ExecuteNonQuery();
//
// Commit database changes, we are all done.
//
if (LocalTransaction)
{
Command.Transaction.Commit();
Command.Transaction = null;
db.Command.Transaction = null;
}
}
catch (Exception e)
{
//
// Rollback file system changes.
//
try
{
installer.RevertFileChanges();
}
catch { }
//
// Rollback database changes.
//
if (LocalTransaction)
{
Command.Transaction.Rollback();
Command.Transaction = null;
db.Command.Transaction = null;
}
//
// Throw the exception again.
//
throw e;
}
}
