private StringBuilder VisitAndOr(DomainTreeExpr expression, ExprType kind)
{
Debug.Assert(kind == ExprType.Or || kind == ExprType.And);
m_builder.Append('(');
bool isFirstChild = true;
foreach (DomainBoolExpr child in expression.Children)
{
if (false == isFirstChild)
{
// Add the operator
if (kind == ExprType.And)
{
m_builder.Append(" AND ");
}
else
{
m_builder.Append(" OR ");
}
}
isFirstChild = false;
// Recursively get the CQL for the child
child.Accept(this);
}
m_builder.Append(')');
return(m_builder);
}
private IEnumerable <DomainTermExpr> VisitTreeNode(DomainTreeExpr expression)
{
foreach (DomainBoolExpr child in expression.Children)
{
foreach (DomainTermExpr result in child.Accept(this))
{
yield return(result);
}
}
}
private DbExpression VisitAndOr(DomainTreeExpr expression, Func <DbExpression, DbExpression, DbExpression> op)
{
DbExpression cqt = null;
foreach (var child in expression.Children)
{
if (cqt == null)
{
cqt = child.Accept(this);
}
else
{
cqt = op(cqt, child.Accept(this));
}
}
return(cqt);
}
private StringBuilder VisitAndOr(DomainTreeExpr expression, string opAsString)
{
List <string> childrenStrings = new List <string>();
StringBuilder builder = m_builder;
// Save the old string builder and pass a new one to each child
foreach (DomainBoolExpr child in expression.Children)
{
m_builder = new StringBuilder();
child.Accept(this);
childrenStrings.Add(m_builder.ToString());
}
// Now store the children in a sorted manner
m_builder = builder;
m_builder.Append('(');
StringUtil.ToSeparatedStringSorted(m_builder, childrenStrings, " " + opAsString + " ");
m_builder.Append(')');
return(m_builder);
}
private bool VisitAndOr(DomainTreeExpr expression)
{
// If any child is not final, tree is not final -- we cannot
// have a mix of final and non-final trees!
bool isFirst = true;
bool result = true;
foreach (DomainBoolExpr child in expression.Children)
{
if (child as DomainFalseExpr != null || child as DomainTrueExpr != null)
{
// Ignore true or false since they carry no information
continue;
}
bool isChildFinal = child.Accept(this);
if (isFirst)
{
result = isChildFinal;
}
Debug.Assert(result == isChildFinal, "All children must be final or non-final");
isFirst = false;
}
return(result);
}
