private static ClientObject GetRootClientObjectForClientQueryableExpression(Expression exp)
{
ClientObject clientObject = null;
ExpressionType nodeType = exp.NodeType;
if (nodeType != ExpressionType.Call)
{
if (nodeType == ExpressionType.Constant)
{
ConstantExpression constantExpression = (ConstantExpression)exp;
clientObject = (constantExpression.Value as ClientObject);
if (clientObject == null)
{
throw DataRetrieval.CreateInvalidQueryExpressionException(exp);
}
}
}
else
{
MethodCallExpression methodCallExpression = (MethodCallExpression)exp;
if (methodCallExpression.Object != null)
{
clientObject = DataRetrieval.GetRootClientObjectForClientQueryableExpression(methodCallExpression.Object);
}
else
{
if (methodCallExpression.Arguments.Count <= 0)
{
throw DataRetrieval.CreateInvalidQueryExpressionException(methodCallExpression);
}
clientObject = DataRetrieval.GetRootClientObjectForClientQueryableExpression(methodCallExpression.Arguments[0]);
}
}
return(clientObject);
}
internal static ClientQueryableResult <T> Retrieve <T>(ClientQueryable <T> clientQueryable) where T : ClientObject
{
Expression expression = clientQueryable.Expression;
ClientQueryableResult <T> clientQueryableResult = new ClientQueryableResult <T>();
ClientObject rootClientObjectForClientQueryableExpression = DataRetrieval.GetRootClientObjectForClientQueryableExpression(expression);
if (rootClientObjectForClientQueryableExpression == null)
{
throw new InvalidQueryExpressionException();
}
ClientQueryInternal clientQueryInternal = new ClientQueryInternal(rootClientObjectForClientQueryableExpression, null, false, null);
rootClientObjectForClientQueryableExpression.Context.AddQueryIdAndResultObject(clientQueryInternal.Id, clientQueryableResult);
rootClientObjectForClientQueryableExpression.Context.AddQuery(clientQueryInternal);
DataRetrieval.QueryProcessInfo queryProcessInfo = new DataRetrieval.QueryProcessInfo();
DataRetrieval.QueryMethodAggregator queryMethodAggregator = new DataRetrieval.QueryMethodAggregator(expression);
DataRetrieval.ProcessQueryExpression(clientQueryInternal, rootClientObjectForClientQueryableExpression, expression, false, queryProcessInfo, queryMethodAggregator);
queryMethodAggregator.Check();
if (queryMethodAggregator.Include == 0)
{
clientQueryInternal.ChildItemQuery.SelectAllProperties();
}
queryProcessInfo.FinalProcess();
return(clientQueryableResult);
}
