public override void TransformToImplementedOps(AlterProcessorCaps caps, DbDiffOptions opts, List <AlterOperation> replacement, AlterPlan plan, IDatabaseSource targetDb)
{
if (!caps[((ISpecificObjectStructure)OldObject).ObjectType].Change)
{
plan.RecreateObject(OldObject, NewObject);
replacement.Clear();
}
}
public override void AddPhysicalDependencies(AlterProcessorCaps caps, DbDiffOptions opts, List <AlterOperation> before, List <AlterOperation> after, AlterPlan plan, IDatabaseSource targetDb)
{
var oldcol = OldObject as ColumnStructure;
if (caps.DepCaps.ChangeColumn_Constraint || caps.DepCaps.ChangeColumn_Index)
{
ParentTable.LoadStructure(TableStructureMembers.Constraints, targetDb);
foreach (var cnt in ParentTable.Constraints)
{
var cc = cnt as ColumnsConstraint;
if (cc == null)
{
continue;
}
if (cc.Columns.Any(c => c.ColumnName == oldcol.ColumnName))
{
if (
(cc is IIndex && caps.DepCaps.ChangeColumn_Index) ||
(!(cc is IIndex) && caps.DepCaps.ChangeColumn_Constraint))
{
plan.RecreateObject(cc, null);
}
}
}
}
if (caps.DepCaps.ChangeColumn_Reference)
{
ParentTable.LoadStructure(TableStructureMembers.ReferencedFrom, targetDb);
foreach (ForeignKey fk in ParentTable.GetReferencedFrom())
{
for (int i = 0; i < fk.PrimaryKeyColumns.Count; i++)
{
if (fk.PrimaryKeyColumns[i].ColumnName == oldcol.ColumnName)
{
plan.RecreateObject(fk, null);
}
}
}
}
}
protected void TransformToRecreateTable(List <AlterOperation> replacement, AlterPlan plan, IDatabaseSource targetDb)
{
replacement.Clear();
var op = new AlterOperation_RecreateTable {
ParentTable = ParentTable
};
ParentTable.LoadStructure(TableStructureMembers.All, targetDb);
foreach (var fk in ParentTable.GetReferencedFrom())
{
plan.RecreateObject(fk as AbstractObjectStructure, null);
}
op.AppendOp(this);
replacement.Add(op);
}
public override void TransformToImplementedOps(AlterProcessorCaps caps, DbDiffOptions opts, List <AlterOperation> replacement, AlterPlan plan, IDatabaseSource targetDb)
{
var c = GetConstraintCaps(caps, NewObject);
if (!c.Change)
{
if (c.Create && c.Drop)
{
plan.RecreateObject(OldObject, NewObject);
replacement.Clear();
}
else
{
TransformToRecreateTable(replacement, plan, targetDb);
}
}
}