protected override ResultOperatorBase CreateResultOperator(ClauseGenerationContext clauseGenerationContext)
{
return(new DistinctResultOperator());
}
public override Expression Resolve(
ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
// no data streams out from this node, so we cannot resolve any expressions
throw CreateResolveNotSupportedException();
}
protected override ResultOperatorBase CreateResultOperator(ClauseGenerationContext clauseGenerationContext)
{
var castItemType = CastItemType;
return(new CastResultOperator(castItemType));
}
public override Expression Resolve(ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
ArgumentUtility.CheckNotNull("inputParameter", inputParameter);
ArgumentUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
// this simply streams its input data to the output without modifying its structure, so we resolve by passing on the data to the previous node
return(Source.Resolve(inputParameter, expressionToBeResolved, clauseGenerationContext));
}
protected override ResultOperatorBase CreateResultOperator(ClauseGenerationContext clauseGenerationContext)
{
return(new SingleResultOperator(ParsedExpression.Method.Name.EndsWith("OrDefault")));
}
public Expression Resolve(ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
ArgumentUtility.CheckNotNull("inputParameter", inputParameter);
ArgumentUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
// query sources resolve into references that point back to the respective clauses
return(QuerySourceExpressionNodeUtility.ReplaceParameterWithReference(
this,
inputParameter,
expressionToBeResolved,
clauseGenerationContext));
}
