/// <summary>
/// This method is overriden to display warning message before deletion. Then just calls base.
/// </summary>
/// <param name="hierarchy">Server explorer facade object to be used for Server Explorer hierarchy interaction..</param>
/// <param name="items">Array with item’s identifiers.</param>
/// <returns>Always returns null.</returns>
public override object[] Execute(ServerExplorerFacade hierarchy, int[] items)
{
if (hierarchy == null)
{
throw new ArgumentNullException("hierarchy");
}
if (items == null)
{
throw new ArgumentNullException("items");
}
// Build object names list
StringBuilder list = new StringBuilder();
foreach (int item in items)
{
// Extract name for item
string name = hierarchy.GetName(item);
if (String.IsNullOrEmpty(name))
{
continue;
}
// If builder is not empty, add ', '
if (list.Length > 0)
{
list.Append(Resources.Comma);
}
// Append object name
list.Append(name);
}
// Build warning message
string message = String.Format(CultureInfo.CurrentCulture, Resources.Warning_ConfirmDelete, list.ToString());
// First, ask user for confirmation
if (UIHelper.ShowWarning(message, MessageBoxButtons.YesNo)
!= DialogResult.Yes)
{
return(null);
}
// Only if user confirmed delete, call to base class to execute command
return(base.Execute(hierarchy, items));
}
/// <summary>
/// Returns DROP PROCEDURE/FUNCTION statement.
/// </summary>
/// <param name="identifier">Database object identifier.</param>
/// <returns>Returns DROP TABLE statement.</returns>
public string BuildDropSql(ServerExplorerFacade hierarchy,
int item, object[] identifier)
{
if (identifier == null)
{
throw new ArgumentNullException("identifier");
}
int parentId = hierarchy.GetParent(item);
string parentName = hierarchy.GetName(parentId);
// Build query
StringBuilder query = new StringBuilder("DROP ");
query.Append(parentName == "Stored Procedures" ? "PROCEDURE" : "FUNCTION");
query.Append(' ');
QueryBuilder.WriteIdentifier(identifier[1] as string, identifier[2] as string, query);
return(query.ToString());
}
/// <summary>
/// Drops single item. Uses object descriptor to build DROP statement.
/// </summary>
/// <param name="hierarchy">Server explorer facade object to be used for Server Explorer hierarchy interaction.</param>
/// <param name="item">Item identifier.</param>
/// <returns>Result of execution. Typicaly null.</returns>
protected override object ExecuteSingleItem(ServerExplorerFacade hierarchy, int item)
{
if (hierarchy == null)
throw new ArgumentNullException("hierarchy");
if (item < 0)
throw new ArgumentOutOfRangeException("item");
// Extract type name
string typeName = GetObjectType(hierarchy, item);
if (String.IsNullOrEmpty(typeName))
{
Debug.Fail("Failed to get object type!");
return false;
}
// Extract descriptor
IObjectDescriptor descriptor = ObjectDescriptorFactory.Instance.CreateDescriptor(typeName);
if (descriptor == null || !descriptor.CanBeDropped)
{
Debug.Fail("Failed to get descriptor or descriptor doesn't support dropping!");
return null;
}
// Extract object identifier
object[] identifier = hierarchy.GetObjectIdentifier(item);
if (identifier == null)
{
Debug.Fail("Failed to get object identifier!");
return null;
}
// TODO: Note the seconde check for TableData document. It should be replaced in the future
// by the generic mechanism.
// Check if editor is registered for the database object
if (hierarchy.HasDocument(typeName, identifier) || hierarchy.HasDocument(TableDataDescriptor.TypeName, identifier))
{
UIHelper.ShowError(String.Format(
CultureInfo.InvariantCulture,
Resources.Error_CantDropBecauseOfEditor,
hierarchy.GetName(item)));
return null;
}
// Build DROP query
string dropQuery = String.Empty;
if (descriptor is StoredProcDescriptor)
dropQuery = (descriptor as StoredProcDescriptor).BuildDropSql(
hierarchy, item, identifier);
else
dropQuery = descriptor.BuildDropSql(identifier);
if (String.IsNullOrEmpty(dropQuery))
{
Debug.Fail("Failed to build DROP query!");
return null;
}
// Extract connection
DataConnectionWrapper connection = hierarchy.Connection;
if (connection == null)
{
Debug.Fail("Failed to extract connection!");
return null;
}
try
{
// Execute drop query
connection.ExecuteScalar(dropQuery);
// Drop hierarchy node
hierarchy.DropObjectNode(item);
// Notify everybody about object dropping
connection.ObjectChangeEvents.RaiseObjectRemoved(typeName, identifier);
}
catch (DbException e)
{
Trace.TraceError("Error during saving object:\n{0}", e.ToString());
SqlErrorDialog.ShowError(e, connection.GetFullStatus());
}
catch (Exception e)
{
Trace.TraceError("Error during saving object:\n{0}", e.ToString());
UIHelper.ShowError(e);
}
return null;
}
/// <summary>
/// This method is overriden to display warning message before deletion. Then just calls base.
/// </summary>
/// <param name="hierarchy">Server explorer facade object to be used for Server Explorer hierarchy interaction..</param>
/// <param name="items">Array with item’s identifiers.</param>
/// <returns>Always returns null.</returns>
public override object[] Execute(ServerExplorerFacade hierarchy, int[] items)
{
if (hierarchy == null)
throw new ArgumentNullException("hierarchy");
if (items == null)
throw new ArgumentNullException("items");
// Build object names list
StringBuilder list = new StringBuilder();
foreach (int item in items)
{
// Extract name for item
string name = hierarchy.GetName(item);
if (String.IsNullOrEmpty(name))
continue;
// If builder is not empty, add ', '
if (list.Length > 0)
list.Append(Resources.Comma);
// Append object name
list.Append(name);
}
// Build warning message
string message = String.Format(CultureInfo.CurrentCulture, Resources.Warning_ConfirmDelete, list.ToString());
// First, ask user for confirmation
if (UIHelper.ShowWarning(message, MessageBoxButtons.YesNo)
!= DialogResult.Yes)
return null;
// Only if user confirmed delete, call to base class to execute command
return base.Execute(hierarchy, items);
}
/// <summary>
/// Returns DROP PROCEDURE/FUNCTION statement.
/// </summary>
/// <param name="identifier">Database object identifier.</param>
/// <returns>Returns DROP TABLE statement.</returns>
public string BuildDropSql(ServerExplorerFacade hierarchy,
int item, object[] identifier)
{
if (identifier == null)
throw new ArgumentNullException("identifier");
int parentId = hierarchy.GetParent(item);
string parentName = hierarchy.GetName(parentId);
// Build query
StringBuilder query = new StringBuilder("DROP ");
query.Append(parentName == "Stored Procedures" ? "PROCEDURE" : "FUNCTION");
query.Append(' ');
QueryBuilder.WriteIdentifier(identifier[1] as string, identifier[2] as string, query);
return query.ToString();
}
/// <summary>
/// Drops single item. Uses object descriptor to build DROP statement.
/// </summary>
/// <param name="hierarchy">Server explorer facade object to be used for Server Explorer hierarchy interaction.</param>
/// <param name="item">Item identifier.</param>
/// <returns>Result of execution. Typicaly null.</returns>
protected override object ExecuteSingleItem(ServerExplorerFacade hierarchy, int item)
{
if (hierarchy == null)
{
throw new ArgumentNullException("hierarchy");
}
if (item < 0)
{
throw new ArgumentOutOfRangeException("item");
}
// Extract type name
string typeName = GetObjectType(hierarchy, item);
if (String.IsNullOrEmpty(typeName))
{
Debug.Fail("Failed to get object type!");
return(false);
}
// Extract descriptor
IObjectDescriptor descriptor = ObjectDescriptorFactory.Instance.CreateDescriptor(typeName);
if (descriptor == null || !descriptor.CanBeDropped)
{
Debug.Fail("Failed to get descriptor or descriptor doesn't support dropping!");
return(null);
}
// Extract object identifier
object[] identifier = hierarchy.GetObjectIdentifier(item);
if (identifier == null)
{
Debug.Fail("Failed to get object identifier!");
return(null);
}
// TODO: Note the seconde check for TableData document. It should be replaced in the future
// by the generic mechanism.
// Check if editor is registered for the database object
if (hierarchy.HasDocument(typeName, identifier) || hierarchy.HasDocument(TableDataDescriptor.TypeName, identifier))
{
UIHelper.ShowError(String.Format(
CultureInfo.InvariantCulture,
Resources.Error_CantDropBecauseOfEditor,
hierarchy.GetName(item)));
return(null);
}
// Build DROP query
string dropQuery = String.Empty;
if (descriptor is StoredProcDescriptor)
{
dropQuery = (descriptor as StoredProcDescriptor).BuildDropSql(
hierarchy, item, identifier);
}
else
{
dropQuery = descriptor.BuildDropSql(identifier);
}
if (String.IsNullOrEmpty(dropQuery))
{
Debug.Fail("Failed to build DROP query!");
return(null);
}
// Extract connection
DataConnectionWrapper connection = hierarchy.Connection;
if (connection == null)
{
Debug.Fail("Failed to extract connection!");
return(null);
}
try
{
// Execute drop query
connection.ExecuteScalar(dropQuery);
// Drop hierarchy node
hierarchy.DropObjectNode(item);
// Notify everybody about object dropping
connection.ObjectChangeEvents.RaiseObjectRemoved(typeName, identifier);
}
catch (DbException e)
{
Trace.TraceError("Error during saving object:\n{0}", e.ToString());
SqlErrorDialog.ShowError(e, connection.GetFullStatus());
}
catch (Exception e)
{
Trace.TraceError("Error during saving object:\n{0}", e.ToString());
UIHelper.ShowError(e);
}
return(null);
}
