/// <summary>
/// Compares two publications and returns result listing all identical aspects and differences
/// </summary>
/// <param name="source">The publication which represents the desired end state</param>
/// <param name="target">The publication the changes are to be applied to</param>
/// <returns>Results of the comparison</returns>
public SqlPublicationCompareResult Compare(Element source, Element target)
{
var sourceArticles = source.Articles();
var targetArticles = target.Articles();
var articlesEqual = new Dictionary<Element, Element>();
var articlesChanged = new Dictionary<Element, SqlPublicationArticleChangeDefinition>();
foreach (var sourceArticle in sourceArticles.Intersect(targetArticles, x => x.TableName()))
{
var matchingTargetArticle = targetArticles.Single(targetArticle => targetArticle.TableName() == sourceArticle.TableName());
var columnsToAdd = sourceArticle.Columns().Except(matchingTargetArticle.Columns(), x => x.ColumnName()).ToList();
var columnsToRemove = matchingTargetArticle.Columns().Except(sourceArticle.Columns(), x => x.ColumnName()).ToList();
if (!columnsToAdd.Any() && !columnsToRemove.Any())
articlesEqual.Add(sourceArticle, matchingTargetArticle);
else
{
var changeDefinition = new SqlPublicationArticleChangeDefinition
{
ColumnsAdded = columnsToAdd,
ColumnsDropped = columnsToRemove,
PropertiesEqual = new List<string>(),
PropertiesModified = new List<string>()
};
articlesChanged.Add(sourceArticle, changeDefinition);
}
}
return new SqlPublicationCompareResult
{
SourceElement = source,
ElementsToAdd = new ReadOnlyCollection<Element>(sourceArticles.Except(targetArticles, x => x.TableName()).ToList()),
ElementsToDrop = new ReadOnlyCollection<Element>(targetArticles.Except(sourceArticles, x => x.TableName()).ToList()),
ElementsEqual = articlesEqual,
ElementsChanged = articlesChanged
};
}
public CreatePublicationStep(Element sourceElement)
{
SourceElement = sourceElement;
}
public DropPublicationStep(Element targetElement)
{
TargetElement = targetElement;
}