public MSIDataReader(Database msiDatabase, TableInfo tableInfo)
{
_database = msiDatabase;
_tableInfo = tableInfo;
_tableView = _database.OpenView(tableInfo.SqlSelectString);
_tableView.Execute();
_enumerator = _tableView.GetEnumerator();
_columnCount = tableInfo.Columns.Count;
}
private void WriteRecords(Database db, string path)
{
TransformView transform = null;
if (db.Tables.Contains(TransformView.TableName))
{
transform = new TransformView(db);
}
string query = null;
try
{
query = this.GetQuery(db, path);
}
catch (PSArgumentException ex)
{
base.WriteError(ex.ErrorRecord);
return;
}
if (!string.IsNullOrEmpty(query))
{
using (var view = db.OpenView(query))
{
view.Execute();
// Get column information from the view before being disposed.
var columns = ViewManager.GetColumns(view);
var record = view.Fetch();
while (null != record)
{
using (record)
{
// Create a locally cached copy of the record.
var copy = new Record(record, columns, transform, path);
var obj = PSObject.AsPSObject(copy);
// Show only column properties by default.
var memberSet = ViewManager.GetMemberSet(view);
obj.Members.Add(memberSet, true);
this.WriteObject(obj);
}
record = view.Fetch();
}
}
}
else
{
foreach (var table in db.Tables)
{
if (db.IsTablePersistent(table.Name))
{
var info = new TableInfo(table.Name, path, transform, this.Patch, this.Transform);
var obj = PSObject.AsPSObject(info);
this.WriteObject(obj);
}
}
}
}
private void Initialize(Database db, Microsoft.Deployment.WindowsInstaller.TableInfo info)
{
using (var view = db.OpenView(info.SqlSelectString))
{
view.Execute();
var record = view.Fetch();
while (null != record)
{
using (record)
{
var table = record.GetString(1);
var column = record.GetString(2);
var key = record.GetString(3);
Table tbl;
if (!this.tables.ContainsKey(table))
{
tbl = new Table();
this.tables.Add(table, tbl);
}
else
{
tbl = this.tables[table];
}
Row row = null;
if (!string.IsNullOrEmpty(key))
{
var primaryKey = key
.Replace(TransformView.Tab, Record.KeySeparator)
.Replace(TransformView.Space, string.Empty);
if (!tbl.Rows.Contains(primaryKey))
{
row = new Row(primaryKey);
tbl.Rows.Add(row);
}
else
{
row = tbl.Rows[primaryKey];
}
}
switch (TransformView.TableOperations.IndexOf(column))
{
case 0:
tbl.SetPrincipalOperation(TableOperation.Create);
break;
case 1:
tbl.SetPrincipalOperation(TableOperation.Modify);
row.SetPrincipalOperation(RowOperation.Insert);
break;
case 2:
tbl.SetPrincipalOperation(TableOperation.Modify);
row.SetPrincipalOperation(RowOperation.Delete);
break;
case 3:
tbl.SetPrincipalOperation(TableOperation.Drop);
break;
default:
tbl.SetPrincipalOperation(TableOperation.Modify);
if (null != row)
{
row.SetPrincipalOperation(RowOperation.Modify);
}
break;
}
}
record = view.Fetch();
}
}
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
/// <filterpriority>2</filterpriority>
public void Dispose()
{
if (_currentRecord != null) {
_currentRecord.Dispose();
}
if (_enumerator != null) {
_enumerator.Dispose();
}
if (_tableView != null) {
_tableView.Dispose();
}
_currentRecord = null;
_enumerator = null;
_tableView = null;
_database = null;
_tableInfo = null;
}