private static string GetChainedExpression(CAMLChainedExpression chainedExpression)
{
var statementList = chainedExpression.Expressions.Select(GetSingleExpression).ToList();
var statementStack = new Stack <string>();
foreach (var statement in statementList)
{
statementStack.Push(statement);
}
// Recursively build up query
Func <Stack <string>, string> process = null;
process = stack =>
{
// Pop the first two statements, combine then with the condition operator.
// If only one item left, entire statement chain has been processed, so retur the result
if (stack.Count == 0)
{
return(string.Empty);
}
if (stack.Count == 1)
{
return(stack.Pop());
}
var statement1 = stack.Pop();
var statement2 = stack.Pop();
var expr = String.Format(@"<{0}>{1}{2}</{0}>", chainedExpression.Condition, statement1, statement2);
stack.Push(expr);
return(process(stack));
};
return(process(statementStack));
}
public void CAMLBuilder_Chained_3_Expression()
{
var expression = GetSinglExpression() as CAMLExpression;
var chain = new CAMLChainedExpression
{
Condition = CAMLCondition.And,
Expressions = new List<CAMLExpression> { expression, expression, expression }
};
var builder = new CAMLBuilder(chain);
var checkString = GetThreeChainString(chain);
Assert.IsTrue(builder.ToString().Equals(checkString));
}
public void CAMLBuilder_Chained_2_Expression()
{
var expression = GetSinglExpression() as CAMLExpression;
var chain = new CAMLChainedExpression
{
Condition = CAMLCondition.And,
Expressions = new List<CAMLExpression> { expression, expression }
};
var builder = new CAMLBuilder(chain);
var checkString = String.Format(@"<Where><{0}>{1}{1}</{0}></Where>",
chain.Condition,
GetSingleString(expression));
Assert.IsTrue(builder.ToString().Equals(checkString));
}
private static string GetChainedExpression(CAMLChainedExpression chainedExpression)
{
var statementList = chainedExpression.Expressions.Select(GetSingleExpression).ToList();
var statementStack = new Stack<string>();
foreach (var statement in statementList)
statementStack.Push(statement);
// Recursively build up query
Func<Stack<string>, string> process = null;
process = stack =>
{
// Pop the first two statements, combine then with the condition operator.
// If only one item left, entire statement chain has been processed, so retur the result
if (stack.Count == 0) return string.Empty;
if (stack.Count == 1) return stack.Pop();
var statement1 = stack.Pop();
var statement2 = stack.Pop();
var expr = String.Format(@"<{0}>{1}{2}</{0}>", chainedExpression.Condition, statement1, statement2);
stack.Push(expr);
return process(stack);
};
return process(statementStack);
}
private string GetThreeChainString(CAMLChainedExpression chain)
{
var expression = chain.Expressions[0];
return String.Format(@"<Where><{0}><{0}>{1}{1}</{0}>{1}</{0}></Where>",
chain.Condition,
GetSingleString(expression));
}