/// <summary>
/// Visits the expression and generate the lucene query
/// </summary>
/// <param name="expression">The expression.</param>
protected void VisitExpression(Expression expression)
{
if (expression is BinaryExpression)
{
VisitBinaryExpression((BinaryExpression)expression);
}
else
{
switch (expression.NodeType)
{
case ExpressionType.MemberAccess:
VisitMemberAccess((MemberExpression)expression, true);
break;
case ExpressionType.Not:
var unaryExpressionOp = ((UnaryExpression)expression).Operand;
switch (unaryExpressionOp.NodeType)
{
case ExpressionType.MemberAccess:
VisitMemberAccess((MemberExpression)unaryExpressionOp, false);
break;
case ExpressionType.Call:
// probably a call to !In()
luceneQuery.OpenSubclause();
luceneQuery.Where("*:*");
luceneQuery.NegateNext();
VisitMethodCall((MethodCallExpression)unaryExpressionOp);
luceneQuery.CloseSubclause();
break;
default:
throw new ArgumentOutOfRangeException(unaryExpressionOp.NodeType.ToString());
}
break;
case ExpressionType.Convert:
case ExpressionType.ConvertChecked:
VisitExpression(((UnaryExpression)expression).Operand);
break;
default:
if (expression is MethodCallExpression)
{
VisitMethodCall((MethodCallExpression)expression);
}
else if (expression is LambdaExpression)
{
VisitExpression(((LambdaExpression)expression).Body);
}
break;
}
}
}