/// <summary>
/// Schedule an update by adding the appropriate delete, update and add records
/// </summary>
/// <param name="context">The installation context.</param>
/// <param name="schemaObject">The object to update.</param>
private void ScriptUpdate(InstallContext context, SchemaObject schemaObject)
{
// if we are dropping and readding an object, then make sure we put the object in the drop list at the right time
if (schemaObject.OriginalOrder == 0)
{
// if the object matches an existing schema object (probably), then find it and copy its installation order
var originalObject = context.SchemaObjects.Find(o => schemaObject.SchemaObjectType == o.SchemaObjectType && String.Compare(schemaObject.Name, o.Name, StringComparison.OrdinalIgnoreCase) == 0);
if (originalObject != null)
schemaObject.OriginalOrder = originalObject.OriginalOrder;
else if (context.AddObjects.Any())
schemaObject.OriginalOrder = context.AddObjects.Max(o => o.OriginalOrder) + 1;
else
schemaObject.OriginalOrder = 1;
}
// if we have already scripted this object, then don't do it again
if (context.AddObjects.Any(o => o.Name == schemaObject.Name))
return;
// if this is a table, then let's see if we can just modify the table
if (schemaObject.SchemaObjectType == SchemaObjectType.Table)
{
ScriptStandardDependencies(context, schemaObject);
ScriptTableUpdate(context, schemaObject);
return;
}
// add the object to the add queue before anything that depends on it, as well as any permissions on the object
context.AddObjects.Add(schemaObject);
// don't log any of our scripting
ScriptPermissions(context, schemaObject);
ScriptStandardDependencies(context, schemaObject);
// handle dependencies for different types of objects
if (schemaObject.SchemaObjectType == SchemaObjectType.IndexedView)
{
ScriptIndexes(context, schemaObject);
}
else if (schemaObject.SchemaObjectType == SchemaObjectType.PrimaryKey)
{
ScriptForeignKeys(context, schemaObject);
ScriptXmlIndexes(context, schemaObject);
}
else if (schemaObject.SchemaObjectType == SchemaObjectType.PrimaryXmlIndex)
{
ScriptXmlIndexes(context, schemaObject);
}
else if (schemaObject.SchemaObjectType == SchemaObjectType.Index)
{
ScriptIndexes(context, schemaObject);
}
// drop the object after any dependencies are dropped
SchemaRegistryEntry dropEntry = context.SchemaRegistry.Find(schemaObject.Name);
if (dropEntry == null)
{
dropEntry = new SchemaRegistryEntry()
{
Type = schemaObject.SchemaObjectType,
ObjectName = schemaObject.Name
};
}
context.DropObjects.Add(dropEntry);
}
/// <summary>
/// Compares two registry entry objects to determine the appropriate installation order.
/// </summary>
/// <param name="e1">The first object to compare.</param>
/// <param name="e2">The second object to compere.</param>
/// <returns>The comparison result.</returns>
private static int CompareByInstallOrder(SchemaRegistryEntry e1, SchemaRegistryEntry e2)
{
int compare = e1.Type.CompareTo(e2.Type);
if (compare == 0)
compare = e1.OriginalOrder.CompareTo(e2.OriginalOrder);
if (compare == 0)
compare = String.Compare(e1.ObjectName, e2.ObjectName, StringComparison.OrdinalIgnoreCase);
return compare;
}
