protected sealed override ResultOperatorBase CreateResultOperator(
ClauseGenerationContext clauseGenerationContext)
{
var resultOperator = CreateSpecificResultOperator();
clauseGenerationContext.AddContextInfo(this, resultOperator);
return(resultOperator);
}
private MainFromClause CreateMainFromClause(ClauseGenerationContext clauseGenerationContext)
{
var fromClause = new MainFromClause(
AssociatedIdentifier,
_querySourceElementType,
ParsedExpression);
clauseGenerationContext.AddContextInfo(this, fromClause);
return(fromClause);
}
public JoinClause CreateJoinClause(ClauseGenerationContext clauseGenerationContext)
{
var dummyInnerKeySelector = Expression.Constant(null);
var joinClause = new JoinClause(
ResultSelector.Parameters[1].Name,
ResultSelector.Parameters[1].Type,
InnerSequence,
GetResolvedOuterKeySelector(clauseGenerationContext),
dummyInnerKeySelector);
clauseGenerationContext.AddContextInfo(this, joinClause);
joinClause.InnerKeySelector = GetResolvedInnerKeySelector(clauseGenerationContext);
return(joinClause);
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel,
ClauseGenerationContext clauseGenerationContext)
{
ArgumentUtility.CheckNotNull("queryModel", queryModel);
var resolvedCollectionSelector = GetResolvedCollectionSelector(clauseGenerationContext);
var clause = new AdditionalFromClause(ResultSelector.Parameters[1].Name, ResultSelector.Parameters[1].Type,
resolvedCollectionSelector);
queryModel.BodyClauses.Add(clause);
clauseGenerationContext.AddContextInfo(this, clause);
var selectClause = queryModel.SelectClause;
selectClause.Selector = GetResolvedResultSelector(clauseGenerationContext);
}
protected override ResultOperatorBase CreateResultOperator(ClauseGenerationContext clauseGenerationContext)
{
var resolvedKeySelector = GetResolvedKeySelector(clauseGenerationContext);
var resolvedElementSelector = GetResolvedOptionalElementSelector(clauseGenerationContext);
if (resolvedElementSelector == null)
{
// supply a default element selector if none is given
// just resolve KeySelector.Parameters[0], that's the input data flowing in from the source node
resolvedElementSelector = Source.Resolve(KeySelector.Parameters[0], KeySelector.Parameters[0],
clauseGenerationContext);
}
var resultOperator =
new GroupResultOperator(AssociatedIdentifier, resolvedKeySelector, resolvedElementSelector);
clauseGenerationContext.AddContextInfo(this, resultOperator);
return(resultOperator);
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel,
ClauseGenerationContext clauseGenerationContext)
{
ArgumentUtility.CheckNotNull("queryModel", queryModel);
var joinResultSelector = Expression.Lambda(Expression.Constant(null), OuterKeySelector.Parameters[0],
InnerKeySelector.Parameters[0]);
var joinParseInfo = new MethodCallExpressionParseInfo(AssociatedIdentifier, Source, ParsedExpression);
var joinExpressionNode = new JoinExpressionNode(joinParseInfo, InnerSequence, OuterKeySelector,
InnerKeySelector, joinResultSelector);
var joinClause = joinExpressionNode.CreateJoinClause(clauseGenerationContext);
var groupJoinClause = new GroupJoinClause(ResultSelector.Parameters[1].Name,
ResultSelector.Parameters[1].Type, joinClause);
clauseGenerationContext.AddContextInfo(this, groupJoinClause);
queryModel.BodyClauses.Add(groupJoinClause);
var selectClause = queryModel.SelectClause;
selectClause.Selector = GetResolvedResultSelector(clauseGenerationContext);
}