public override DbExpression Visit(DbNewInstanceExpression expression)
{
EntityUtil.CheckArgumentNull(expression, "expression");
DbExpression result = expression;
TypeUsage newType = this.VisitTypeUsage(expression.ResultType);
IList <DbExpression> newArguments = this.VisitExpressionList(expression.Arguments);
bool unchanged = (object.ReferenceEquals(expression.ResultType, newType) && object.ReferenceEquals(expression.Arguments, newArguments));
if (expression.HasRelatedEntityReferences)
{
IList <DbRelatedEntityRef> newRefs = this.VisitList(expression.RelatedEntityReferences, this.VisitRelatedEntityRef);
if (!unchanged ||
!object.ReferenceEquals(expression.RelatedEntityReferences, newRefs))
{
result = CqtBuilder.CreateNewEntityWithRelationshipsExpression((EntityType)newType.EdmType, newArguments, newRefs);
}
}
else
{
if (!unchanged)
{
result = CqtBuilder.New(newType, System.Linq.Enumerable.ToArray(newArguments));
}
}
NotifyIfChanged(expression, result);
return(result);
}
/// <summary>
/// Visitor pattern method for <see cref="DbNewInstanceExpression"/>.
/// </summary>
/// <param name="expression">The DbNewInstanceExpression that is being visited.</param>
/// <exception cref="ArgumentNullException"><paramref name="expression"/> is null</exception>
public override void Visit(DbNewInstanceExpression expression)
{
// #433613: PreSharp warning 56506: Parameter 'expression' to this public method must be validated: A null-dereference can occur here.
EntityUtil.CheckArgumentNull(expression, "expression");
VisitExpressionList(expression.Arguments);
if (expression.HasRelatedEntityReferences)
{
Debug.Assert(expression.RelatedEntityReferences != null, "HasRelatedEntityReferences returned true for null RelatedEntityReferences list?");
this.VisitRelatedEntityReferenceList(expression.RelatedEntityReferences);
}
}
/// <summary> /// Typed visitor pattern method for DbNewInstanceExpression. /// </summary> /// <param name="expression">The DbNewInstanceExpression that is being visited.</param> /// <returns>An instance of TResultType.</returns> public abstract TResultType Visit(DbNewInstanceExpression expression);
/// <summary> /// Visitor pattern method for DbNewInstanceExpression. /// </summary> /// <param name="expression">The DbNewInstanceExpression that is being visited.</param> public abstract void Visit(DbNewInstanceExpression expression);
