/// <summary>
/// Selects the specified attributes from the source columns.
/// </summary>
/// <typeparam name="TItem">
/// The type of the source item.
/// </typeparam>
/// <param name="matchSetAction">
/// Defines the set of matching attributes.
/// </param>
/// <param name="sourceAttributes">
/// The source attributes to return.
/// </param>
/// <returns>
/// The current <see cref="JsonInsert{T}"/>.
/// </returns>
public TransactSqlMergeBase <T> SelectFromSource <TItem>(
[NotNull] Action <AttributeMatchSet <T, TItem> > matchSetAction,
[NotNull] params Expression <Func <TItem, object> >[] sourceAttributes)
{
if (matchSetAction == null)
{
throw new ArgumentNullException(nameof(matchSetAction));
}
if (sourceAttributes == null)
{
throw new ArgumentNullException(nameof(sourceAttributes));
}
var itemDefinition = this.DatabaseContext.RepositoryAdapter.DefinitionProvider.Resolve <TItem>();
var matchSet = new AttributeMatchSet <T, TItem>();
matchSetAction.Invoke(matchSet);
this.targetSourceRelations.Clear();
foreach (var attributeMatch in matchSet.Matches)
{
var entityRelation = new EntityRelation(EntityRelationType.InnerJoin);
entityRelation.Join(attributeMatch.SourceExpression, attributeMatch.RelationExpression);
this.targetSourceRelations.Add(entityRelation);
}
this.sourceSelectionAttributes.AddRange(
sourceAttributes.Any() ? sourceAttributes.Select(itemDefinition.Find) : itemDefinition.ReturnableAttributes);
return(this);
}
public void On_MatchedAttributeSet_ExpressionPropertyNamesMatchExpected()
{
var target = new AttributeMatchSet <DomainAggregateRow, SubContainerRow>().On(row => row.SubContainerId, row => row.SubContainerId);
Assert.AreEqual(nameof(DomainAggregateRow.SubContainerId), target.Matches.First().SourceExpression.GetPropertyName());
Assert.AreEqual(nameof(SubContainerRow.SubContainerId), target.Matches.First().RelationExpression.GetPropertyName());
}
