public Expression GetResolvedOptionalElementSelector(ClauseGenerationContext clauseGenerationContext)
{
if (OptionalElementSelector == null)
{
return(null);
}
return(_cachedElementSelector.GetOrCreate(
r => r.GetResolvedExpression(OptionalElementSelector.Body, OptionalElementSelector.Parameters[0],
clauseGenerationContext)));
}
public Expression GetResolvedResultSelector(ClauseGenerationContext clauseGenerationContext)
{
return(_cachedResultSelector.GetOrCreate(
r => r.GetResolvedExpression(
QuerySourceExpressionNodeUtility.ReplaceParameterWithReference(
this,
ResultSelector.Parameters[1],
ResultSelector.Body,
clauseGenerationContext),
ResultSelector.Parameters[0],
clauseGenerationContext)));
}
public Expression GetResolvedResultSelector(ClauseGenerationContext clauseGenerationContext)
{
// our result selector usually looks like this: (i, j) => new { i = i, j = j }
// with the data for i coming from the previous node and j identifying the data from this node
// we resolve the selector by first substituting j by a QuerySourceReferenceExpression pointing back to us, before asking the previous node
// to resolve i
return(_cachedResultSelector.GetOrCreate(
r => r.GetResolvedExpression(
QuerySourceExpressionNodeUtility.ReplaceParameterWithReference(
this,
ResultSelector.Parameters[1],
ResultSelector.Body,
clauseGenerationContext),
ResultSelector.Parameters[0],
clauseGenerationContext)));
}
public Expression GetResolvedKeySelector(ClauseGenerationContext clauseGenerationContext)
{
return(_cachedSelector.GetOrCreate(r =>
r.GetResolvedExpression(KeySelector.Body, KeySelector.Parameters[0], clauseGenerationContext)));
}
public Expression GetResolvedPredicate(ClauseGenerationContext clauseGenerationContext)
{
return(_cachedPredicate.GetOrCreate(r =>
r.GetResolvedExpression(Predicate.Body, Predicate.Parameters[0], clauseGenerationContext)));
}