private void DumpUnionGroupInfo(StringBuilder stringBuilder, string indent, UnionGroup unionGroup)
{
QueryBase[] children = GetUnionChildren(unionGroup);
foreach (QueryBase child in children)
{
if (stringBuilder.Length > 0)
{
stringBuilder.AppendLine("<br />");
}
if (child is UnionSubQuery)
{
// UnionSubQuery is a leaf node of query structure.
// It represent a single SELECT statement in the tree of unions
DumpUnionSubQueryInfo(stringBuilder, indent, (UnionSubQuery)child);
}
else
{
// UnionGroup is a tree node.
// It contains one or more leafs of other tree nodes.
// It represent a root of the subquery of the union tree or a
// parentheses in the union tree.
unionGroup = (UnionGroup)child;
stringBuilder.AppendLine(indent + unionGroup.UnionOperatorFull + "group: [");
DumpUnionGroupInfo(stringBuilder, indent + " ", unionGroup);
stringBuilder.AppendLine(indent + "]<br />");
}
}
}
private QueryBase[] GetUnionChildren(UnionGroup unionGroup)
{
ArrayList result = new ArrayList();
for (int i = 0; i < unionGroup.Count; i++)
{
result.Add(unionGroup[i]);
}
return((QueryBase[])result.ToArray(typeof(QueryBase)));
}
private static IEnumerable <QueryBase> GetUnionChildren(UnionGroup unionGroup)
{
var result = new ArrayList();
for (var i = 0; i < unionGroup.Count; i++)
{
result.Add(unionGroup[i]);
}
return((QueryBase[])result.ToArray(typeof(QueryBase)));
}
private void ReplaceWhereInGroup(UnionGroup unionGroup, string newWhere)
{
for (int i = 0; i < unionGroup.Count; i++)
{
if (unionGroup[i] is UnionGroup)
{
ReplaceWhereInGroup((UnionGroup)unionGroup[i], newWhere);
}
else
{
Debug.Assert(unionGroup[i] is UnionSubQuery);
ReplaceWhereAccess((UnionSubQuery)unionGroup[i], newWhere);
}
}
}