public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
var source1 = parentResult.GetLoadedItems(QueryProcessingHelper.GetSourceParameterType(query));
var constantArgument = query.Arguments[1] as ConstantExpression;
if (constantArgument == null)
{
return(ProcessingResult.Unsuccessful);
}
var source2 = (IEnumerable)constantArgument.Value;
var resultElementType = QueryProcessingHelper.GetSourceParameterType(query);
var resultList = (IList)Activator.CreateInstance(typeof(List <>).MakeGenericType(resultElementType));
foreach (var item in source1)
{
resultList.Add(item);
}
foreach (var item in source2)
{
resultList.Add(item);
}
return(new ProcessingResult(true, resultList));
}
private static ProcessingResult LoadData(ProcessingResult result, Type dataType)
{
if (!result.IsSuccess)
{
return(ProcessingResult.Unsuccessful);
}
var loadedResult = result.IsSingleItem
? result.GetLoadedItem(dataType)
: result.GetLoadedItems(dataType);
return(new ProcessingResult(true, loadedResult, result.IsSingleItem));
}
public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
var elementType = QueryProcessingHelper.GetSourceParameterType(query);
var items = parentResult.GetLoadedItems(elementType);
var comparer = query.Arguments.Count > 1 ? ((ConstantExpression)query.Arguments[1]).Value : null;
var result = RuntimeMethodInvoker.InvokeFuncCached <IEnumerable <RuntimeType1>, IEqualityComparer <RuntimeType1>, List <RuntimeType1> >(
Distinct, new RuntimeTypeBinding {
new RuntimeType1(elementType)
}, items, comparer);
return(new ProcessingResult(true, result));
}
internal static object ProcessQueries(NodeReference node, DataContext context, Expression queryExpression)
{
var queries = GetQueriesInTurn(queryExpression);
var nodes = DatabaseManager.GetEntitiesNodes(node, context);
var result = new ProcessingResult(true, nodes);
result = queries.Aggregate(result, (current, query) => ProcessQuery(query, current, context));
if (result.IsDeferred())
{
return(result.IsSingleItem
? result.GetLoadedItem(GetReturnParameterType(queries.Last()))
: result.GetLoadedItems(GetReturnParameterType(queries.Last())));
}
return(result.Result);
}
public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
var source1 = parentResult.GetLoadedItems(QueryProcessingHelper.GetSourceParameterType(query));
var constantArgument = query.Arguments[1] as ConstantExpression;
if (constantArgument == null)
{
return(ProcessingResult.Unsuccessful);
}
var source2 = constantArgument.Value;
var comparer = query.Arguments.Count > 2 ? ((ConstantExpression)query.Arguments[2]).Value : null;
var sourceType = QueryProcessingHelper.GetSourceParameterType(query);
Func <MethodCallExpression, IEnumerable <RuntimeType1>, IEnumerable <RuntimeType1>,
IEqualityComparer <RuntimeType1>, ProcessingResult> func = ProcessQuery;
return((ProcessingResult)RuntimeMethodInvoker.InvokeFuncCached(
func, new RuntimeTypeBinding {
new RuntimeType1(sourceType)
}, query, source1, source2, comparer));
}
public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
if (!parentResult.IsDeferred())
{
return(ProcessingResult.Unsuccessful);
}
var hasSelector = query.Arguments.Count > 1;
var elementType = QueryProcessingHelper.GetReturnParameterType(query);
if (!hasSelector)
{
var items = parentResult.GetLoadedItems(elementType);
return(new ProcessingResult(true, ProcessQuery(items), true));
}
var unaryExpression = (UnaryExpression)query.Arguments[1];
var selectorLambda = (LambdaExpression)unaryExpression.Operand;
var selectorResult = ExpressionProcessingHelper.ProcessExpression(selectorLambda.Body, parentResult.GetDeferredList(), context);
if (!selectorResult.IsSuccess)
{
return(ProcessingResult.Unsuccessful);
}
if (selectorResult.IsSingleItem)
{
var result = Convert.ChangeType(selectorResult.Result, elementType);
return(new ProcessingResult(true, result, true));
}
var loadedItems = selectorResult.GetLoadedItems(elementType);
return(new ProcessingResult(true, ProcessQuery(loadedItems), true));
}
internal static ProcessingResult ProcessQueryByDefault(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
var result = InvokeQuery(query, parentResult.GetLoadedItems(GetSourceParameterType(query)), context);
return(new ProcessingResult(true, result));
}
