protected virtual bool ShouldUpdateExisting(ISerializedItem serializedItem, ISourceItem existingItem, DeferredLogWriter <ISerializedAsMasterEvaluatorLogger> deferredUpdateLog)
{
Assert.ArgumentNotNull(serializedItem, "serializedItem");
Assert.ArgumentNotNull(existingItem, "existingItem");
if (existingItem.Id == RootId)
{
return(false); // we never want to update the Sitecore root item
}
// check if templates are different
if (IsTemplateMatch(existingItem, serializedItem, deferredUpdateLog))
{
return(true);
}
// check if names are different
if (IsNameMatch(existingItem, serializedItem, deferredUpdateLog))
{
return(true);
}
// check if source has version(s) that serialized does not
var orphanVersions = existingItem.Versions.Where(sourceItemVersion => serializedItem.GetVersion(sourceItemVersion.Language, sourceItemVersion.VersionNumber) == null).ToArray();
if (orphanVersions.Length > 0)
{
deferredUpdateLog.AddEntry(x => x.OrphanSourceVersion(existingItem, serializedItem, orphanVersions));
return(true); // source contained versions not present in the serialized version, which is a difference
}
// check if shared fields have any mismatching values
if (AnyFieldMatch(serializedItem.SharedFields, existingItem.SharedFields, existingItem, serializedItem, deferredUpdateLog))
{
return(true);
}
// see if the serialized versions have any mismatching values in the source data
return(serializedItem.Versions.Any(serializedItemVersion =>
{
var sourceItemVersion = existingItem.GetVersion(serializedItemVersion.Language, serializedItemVersion.VersionNumber);
// version exists in serialized item but does not in source version
if (sourceItemVersion == null)
{
deferredUpdateLog.AddEntry(x => x.NewSerializedVersionMatch(serializedItemVersion, serializedItem, existingItem));
return true;
}
// field values mismatch
var fieldMatch = AnyFieldMatch(serializedItemVersion.Fields, sourceItemVersion.Fields, existingItem, serializedItem, deferredUpdateLog, serializedItemVersion);
if (fieldMatch)
{
return true;
}
// if we get here everything matches to the best of our knowledge, so we return false (e.g. "do not update this item")
return false;
}));
}
