public override DbExpression Visit(DbNewInstanceExpression expression)
{
Check.NotNull(expression, "expression");
DbExpression result = expression;
var newType = VisitTypeUsage(expression.ResultType);
var newArguments = VisitExpressionList(expression.Arguments);
var unchanged = (ReferenceEquals(expression.ResultType, newType) && ReferenceEquals(expression.Arguments, newArguments));
if (expression.HasRelatedEntityReferences)
{
var newRefs = VisitList(expression.RelatedEntityReferences, VisitRelatedEntityRef);
if (!unchanged
||
!ReferenceEquals(expression.RelatedEntityReferences, newRefs))
{
result = CqtBuilder.CreateNewEntityWithRelationshipsExpression((EntityType)newType.EdmType, newArguments, newRefs);
}
}
else
{
if (!unchanged)
{
result = CqtBuilder.New(newType, newArguments.ToArray());
}
}
NotifyIfChanged(expression, result);
return(result);
}
/// <summary>
/// Visitor pattern method for <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbNewInstanceExpression" />.
/// </summary>
/// <param name="expression"> The DbNewInstanceExpression that is being visited. </param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="expression" />
/// is null
/// </exception>
public override void Visit(DbNewInstanceExpression expression)
{
Check.NotNull <DbNewInstanceExpression>(expression, nameof(expression));
this.VisitExpressionList(expression.Arguments);
if (!expression.HasRelatedEntityReferences)
{
return;
}
this.VisitRelatedEntityReferenceList((IList <DbRelatedEntityRef>)expression.RelatedEntityReferences);
}
/// <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)
{
Check.NotNull(expression, "expression");
VisitExpressionList(expression.Arguments);
if (expression.HasRelatedEntityReferences)
{
Debug.Assert(
expression.RelatedEntityReferences != null,
"HasRelatedEntityReferences returned true for null RelatedEntityReferences list?");
VisitRelatedEntityReferenceList(expression.RelatedEntityReferences);
}
}
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see /// cref="T:System.Data.Entity.Core.Common.CommandTrees.DbNewInstanceExpression" /> /// . /// </summary> /// <returns>A result value of a specific type.</returns> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbNewInstanceExpression" /> that is being visited. /// </param> public abstract TResultType Visit(DbNewInstanceExpression expression);
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbNewInstanceExpression" /> /// . /// </summary> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbNewInstanceExpression" /> that is visited. /// </param> public abstract void Visit(DbNewInstanceExpression expression);
public override void Visit(DbNewInstanceExpression expression)
{
}
