/// <summary>
/// Decollates changes to content object which should be redirected to other records used as property sources
/// </summary>
/// <param name="path">path of content record</param>
/// <param name="data">content object</param>
/// <returns>JObject build from content object</returns>
protected virtual JObject SetRelated(string path, object data)
{
// Establish the records to fetch and fetch them
Type contentType = data.GetType();
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), false)
.Cast <RedirectPropertySourceAttribute>()
.Where(rpsa => !rpsa.ReadOnly)
.ToList();
List <string> paths = rpsAttributes
.Select(a => PathFunctions.Redirect(path, a.SourceDescriptor))
.Distinct()
.ToList();
List <PropertyStore> records = Repository.Instance.Get(contentType, paths).ToList();
// Update the fetched referenced records with updated referenced properties on the content object
JObject jObjectContent = JObject.FromObject(data);
List <object> ids = new List <object>();
List <PropertyStore> vals = new List <PropertyStore>();
if (rpsAttributes.Any())
{
foreach (var rpsAttribute in rpsAttributes)
{
string refdPath = PathFunctions.Redirect(path, rpsAttribute.SourceDescriptor);
if (refdPath == path) // redirected to itself
{
continue;
}
PropertyStore refdRecord = records.FirstOrDefault(ps => (string)ps["Path"] == refdPath);
if (refdRecord == null)
{
refdRecord = GetNewRecord(contentType, refdPath);
}
foreach (string propertyPath in rpsAttribute.PropertyPaths)
{
JObject refdObject = JObject.Parse((string)refdRecord["Content"]);
var toFromPaths = GetPaths(propertyPath);
refdObject.CopyPropertyFrom(toFromPaths[1], jObjectContent, toFromPaths[0]);
refdRecord["Content"] = refdObject.ToString();
}
if (!ids.Contains(refdPath))
{
ids.Add(refdPath);
vals.Add(refdRecord);
}
}
if (vals.Count > 0)
{
Repository.Instance.Set(contentType, vals, ids);
}
}
return(jObjectContent);
}
/// <summary>
/// Efficiently gets from database and collates all data referenced by property source redirects
/// </summary>
/// <param name="primaryPath">path of main item</param>
/// <param name="primaryRecord">data record of main item, if already available, or else null</param>
/// <param name="contentType">type of main content object</param>
/// <returns>content object</returns>
protected virtual object GetWithRelated(string primaryPath, PropertyStore primaryRecord, Type contentType)
{
// Establish the records to fetch and fetch them
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), false)
.Cast <RedirectPropertySourceAttribute>()
.ToList();
List <string> paths = new List <string>();
if (primaryRecord == null)
{
paths.Add(primaryPath);
}
paths.AddRange(rpsAttributes
.Select(a => PathFunctions.Redirect(primaryPath, a.SourceDescriptor))
.Distinct());
List <PropertyStore> records = Repository.Instance.Get(contentType, paths).ToList();
// Update the primary record with redirected properties from referenced records
if (primaryRecord == null)
{
primaryRecord = records.FirstOrDefault(ps => ((string)ps["Path"]) == primaryPath);
}
if (primaryRecord == null)
{
return(null);
}
JObject jContent = null;
if (rpsAttributes.Any())
{
jContent = JObject.Parse((string)primaryRecord["Content"]);
foreach (var rpsAttribute in rpsAttributes)
{
string refdPath = PathFunctions.Redirect(primaryPath, rpsAttribute.SourceDescriptor);
if (refdPath == primaryPath) // redirected to itself
{
continue;
}
PropertyStore refdRecord = records.FirstOrDefault(ps => (string)ps["Path"] == refdPath);
if (refdRecord != null)
{
foreach (string propertyPath in rpsAttribute.PropertyPaths)
{
var toFromPaths = GetPaths(propertyPath);
JObject refdObject = JObject.Parse((string)refdRecord["Content"]);
jContent.CopyPropertyFrom(toFromPaths[0], refdObject, toFromPaths[1]);
}
}
}
}
bool isBaseContent = typeof(BaseContent).IsAssignableFrom(contentType);
if (jContent == null)
{
return(GetContent(isBaseContent, contentType, primaryRecord));
}
object content = jContent.ToObject(contentType);
//if (isBaseContent)
// (content as BaseContent).OriginalRecord = primaryRecord;
return(content);
}
/// <summary>
/// Starting from a list of addresses and optionally (or only) the containers at those addresses, fetch
/// any containers necessary and any other containers required to supply redirected properties for them,
/// obtain the contained content items and collate their properties, returning the content items at the
/// addresses.
/// </summary>
/// <typeparam name="T">Type of content items to return</typeparam>
/// <param name="startContainers">Initial list of containers if they are available</param>
/// <param name="startAddresses">Initial list of addresses, which may be omitted and derived from containers</param>
/// <returns>List of content items</returns>
public IEnumerable <T> Collate <T>(IEnumerable <object> startContainers, IEnumerable <Address> startAddresses) where T : class
{
// place to store all the containers we have currently
Dictionary <VersionedAddress, object> containers;
ItemVersion containerCommonVersion;
startAddresses = startAddresses ?? Enumerable.Empty <Address>();
(containers, containerCommonVersion) = ProcessContainers(startContainers);
List <Address> fetchAddrs = startAddresses
.Where(sa => !containers.Any(kvp => kvp.Key.Address == sa)).ToList();
List <IGrouping <Type, Address> > allStartAddressesByType = null;
if (DoCollation)
{
allStartAddressesByType = fetchAddrs.Concat(containers.Keys)
.GroupBy(a => a.Type)
.ToList();
// Get all addresses for items to collate (startAddresses plus addresses from startContainers)
foreach (var addrTypeG in allStartAddressesByType)
{
Type contentType = addrTypeG.Key;
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), true)
.Cast <RedirectPropertySourceAttribute>()
.ToList();
foreach (Address addr in addrTypeG)
{
fetchAddrs.AddRange(rpsAttributes
.Select(attr => new Address(attr.ContentType ?? contentType,
PathFunctions.Redirect(addr.GetAsContentPath(), attr.SourceDescriptor))));
}
}
fetchAddrs = fetchAddrs.Distinct().ToList();
}
bool pushVersion = (startContainers != null && DoCollation);
if (pushVersion) // Get containers in any version that might be relevant to a start container
{
System.Versions.PushState(VersioningMode.Specific, containerCommonVersion);
}
try
{
// Get all the containers for collation (if current version is not fully specified, may be multiple per address)
foreach (var cont in System.Repository.Get(typeof(object), fetchAddrs))
{
var va = new VersionedAddress(System, cont);
if (containers.ContainsKey(va))
{
log.Error("Duplicate versioned address in db: " + va.ToString());
}
else
{
containers.Add(new VersionedAddress(new Address(cont), new ItemVersion(System, cont).Canonicalise()), cont);
}
}
}
finally
{
if (pushVersion)
{
System.Versions.PopState();
}
}
if (!DoCollation)
{
// just return the containers we have
foreach (object cont in containers.Values)
{
yield return(cont as T);
}
yield break;
}
// Create a lookup by (non-versioned) address of all the containers we have
var contLookup = containers.ToLookup(kvp => kvp.Key.Address.ToString(), kvp => kvp.Value);
// We have the data, now collate it into the content from the startContainers
foreach (var addrTypeG in allStartAddressesByType)
{
// Process all the start addresses (including those of the start containers) of a given type
Type contentType = addrTypeG.Key;
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), true)
.Cast <RedirectPropertySourceAttribute>()
.ToList();
foreach (var addr in addrTypeG.Select(a => new Address(a.Type, a)).Distinct()) // convert a VersionedAddress to an Address if necessary
{
var primaryPath = addr.GetAsContentPath();
if (!contLookup.Contains(new Address(addr.Type, addr).ToString()))
{
continue;
}
foreach (var cont in contLookup[addr.ToString()])
{
object primaryContent = cont;
if (primaryContent is IContentContainer)
{
primaryContent = ((IContentContainer)primaryContent).GetContent(System.Extender);
}
foreach (var rpsAttribute in rpsAttributes)
{
var refAddress = new VersionedAddress(
rpsAttribute.ContentType ?? contentType,
PathFunctions.Redirect(primaryPath, rpsAttribute.SourceDescriptor),
new ItemVersion(System, cont).Canonicalise()
);
if (refAddress.Address == addr) // redirected to itself, ignore
{
continue;
}
object refItem = containers.ContainsKey(refAddress) ? containers[refAddress] : null;
if (refItem is IContentContainer)
{
refItem = ((IContentContainer)refItem).GetContent(System.Extender);
}
if (refItem != null)
{
foreach (string propertyPath in rpsAttribute.PropertyPaths)
{
var toFromPaths = GetPaths(propertyPath);
object val = ReflectionX.GetPropertyValueByPath(refItem, toFromPaths[1]);
var piSet = ReflectionX.GetPropertyByPath(primaryContent.GetType(), toFromPaths[0]);
piSet.SetValue(primaryContent, val);
}
}
}
yield return(primaryContent as T);
}
}
}
}
/// <summary>
/// Decollates changes to content object which should be redirected to other records used as property sources
/// </summary>
/// <param name="path">path of content record</param>
/// <param name="data">content object</param>
/// <returns>JObject build from content object</returns>
protected virtual object SetRelated(string path, object data, bool bypassChecks)
{
if (!DoCollation)
{
return(null);
}
System.Versions.PushState(VersioningMode.Specific, new ItemVersion(System, data));
try
{
JObject jObjectContent = JObject.FromObject(data);
// Establish the records to fetch and fetch them
Type contentType = data.GetType().UnextendedType();
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), true)
.Cast <RedirectPropertySourceAttribute>()
.Where(rpsa => !rpsa.ReadOnly)
.ToList();
List <Address> addresses = rpsAttributes
.Select(a => new Address(a.ContentType ?? contentType, PathFunctions.Redirect(path, a.SourceDescriptor)))
.Distinct()
.ToList();
if (addresses == null || addresses.Count == 0)
{
return(data);
}
List <object> records = System.Repository.Get(typeof(object), addresses).ToList();
// Update the fetched referenced records with updated referenced properties on the content object
List <Address> doneAddrs = new List <Address>();
List <object> vals = new List <object>();
var writebacks = new Dictionary <string[], object>();
foreach (var rpsAttribute in rpsAttributes)
{
Address address = new Address(
rpsAttribute.ContentType ?? contentType,
PathFunctions.Redirect(path, rpsAttribute.SourceDescriptor));
string refdPath = address.GetAsContentPath();
Type refdType = address.Type;
if (refdPath == path && refdType == contentType) // redirected to itself, ignore
{
continue;
}
object refdRecord = records.FirstOrDefault(r => new Address(r) == address);
object refdContent = refdRecord;
if (refdRecord is IContentContainer)
{
refdContent = ((IContentContainer)refdRecord).GetContent(System.Extender);
}
if (refdRecord == null) // adding a new record
{
refdContent = System.Collator.GetNew(address);
refdRecord = System.Collator.GetContainer(address, refdContent);
}
JObject refdObject = JObject.FromObject(refdContent);
List <string[]> writebackPaths = new List <string[]>();
foreach (string propertyPath in rpsAttribute.PropertyPaths)
{
var toFromPaths = GetPaths(propertyPath);
if (toFromPaths[0].EndsWith("<"))
{
toFromPaths[0] = toFromPaths[0].UpToLast("<");
toFromPaths[1] = toFromPaths[1].UpToLast("<");
writebackPaths.Add(toFromPaths);
}
refdObject.CopyPropertyFrom(toFromPaths[1], jObjectContent, toFromPaths[0]);
}
if (refdRecord is IContentContainer)
{
Type valType = ((IContentContainer)refdRecord).ContentType;
valType = System.Extender[valType] ?? valType;
((IContentContainer)refdRecord).SetContent(System, refdObject.ToObject(valType));
}
else
{
refdRecord = refdObject.ToObject(refdRecord.GetType());
}
if (!doneAddrs.Contains(address))
{
doneAddrs.Add(address);
vals.Add(refdRecord);
}
writebackPaths.Do(wp => writebacks.Add(wp, refdRecord));
}
// Create or update referred-to records
if (vals.Count > 0)
{
Repository.Set(vals, new Dictionary <string, object>
{
{ "bypassChecks", bypassChecks },
{ "viaCollation", true }
});
// write back any values configured by attributes (e.g. database index updates)
foreach (var kvp in writebacks)
{
JObject refdObject = JObject.FromObject(kvp.Value);
jObjectContent.CopyPropertyFrom(kvp.Key[0], refdObject, kvp.Key[1]);
}
data = jObjectContent.ToObject(data.GetType());
}
return(writebacks.Count > 0 ? data : null);
}
finally
{
System.Versions.PopState();
}
}
/// <summary>
/// Starting from a list of addresses and optionally (or only) the containers at those addresses, fetch
/// any containers necessary and any other containers required to supply redirected properties for them,
/// obtain the contained content items and collate their properties, returning the content items at the
/// addresses.
/// </summary>
/// <typeparam name="T">Type of content items to return</typeparam>
/// <param name="startContainers">Initial list of containers if they are available</param>
/// <param name="startAddresses">Initial list of addresses, which may be omitted and derived from containers</param>
/// <returns>List of content items</returns>
public IEnumerable <T> Collate <T>(IEnumerable <object> startContainers, IEnumerable <Address> startAddresses) where T : class
{
// place to store all the containers we have currently
var containers = new Dictionary <VersionedAddress, object>();
ItemVersion containerCommonVersion = null;
// Ensure we have the start addresses
if (startContainers != null)
{
containers = startContainers.ToDictionary(sc => new VersionedAddress(sc), sc => sc);
startAddresses = containers.Keys.Select(va => va.Address).Distinct().ToList();
containerCommonVersion = ItemVersion.LeastAbstractCommonVersion(containers.Keys.Select(va => va.Version));
}
var fetchAddrs = startAddresses
.GroupBy(a => a.Type.GetCustomAttributes <RedirectPropertySourceAttribute>())
.SelectMany(ag =>
ag.SelectMany(a => ag.Key
.Select(attr => attr.Redirect(a))
.Concat(a)))
.Distinct()
.Except(containers.Keys.Select(va => va.Address))
.ToList();
bool pushVersion = (startContainers != null);
if (pushVersion) // Get containers in any version that might be relevant to a start container
{
VersionManager.Instance.PushState(VersioningMode.Specific, containerCommonVersion);
}
try
{
// Get all the containers for collation (if current version is not fully specified, may be multiple per address)
foreach (var cont in Repository.Instance.Get(typeof(object), fetchAddrs))
{
var va = new VersionedAddress(cont);
if (containers.ContainsKey(va))
{
log.Error("Duplicate versioned address in db: " + va.ToString());
}
else
{
containers.Add(new VersionedAddress(cont), cont);
}
}
}
finally
{
if (pushVersion)
{
VersionManager.Instance.PopState();
}
}
var contLookup = containers.ToLookup(kvp => kvp.Key.Address.ToString(), kvp => kvp.Value);
if (startContainers == null)
{
startContainers = startAddresses.SelectMany(a => contLookup[a.ToString()]);
}
// We have the data, now collate it into the content from the startContainers
foreach (var addrTypeG in startAddresses.GroupBy(a => a.Type))
{
// Process all the start addresses of a given type
Type contentType = addrTypeG.Key;
var rpsAttributes = contentType
.GetCustomAttributes(typeof(RedirectPropertySourceAttribute), false)
.Cast <RedirectPropertySourceAttribute>()
.ToList();
foreach (var addr in addrTypeG)
{
var primaryPath = addr.GetAsContentPath();
if (!contLookup.Contains(addr.ToString()))
{
continue;
}
foreach (var cont in contLookup[addr.ToString()])
{
object primaryContent = cont;
if (primaryContent is IContentContainer)
{
primaryContent = ((IContentContainer)primaryContent).GetContent();
}
foreach (var rpsAttribute in rpsAttributes)
{
var refAddress = new VersionedAddress(
rpsAttribute.ContentType ?? contentType,
PathFunctions.Redirect(primaryPath, rpsAttribute.SourceDescriptor),
new ItemVersion(cont)
);
if (refAddress.Address == addr) // redirected to itself, ignore
{
continue;
}
object refItem = containers.ContainsKey(refAddress) ? containers[refAddress] : null;
if (refItem is IContentContainer)
{
refItem = ((IContentContainer)refItem).GetContent();
}
if (refItem != null)
{
foreach (string propertyPath in rpsAttribute.PropertyPaths)
{
var toFromPaths = GetPaths(propertyPath);
object val = ReflectionX.GetPropertyValueByPath(refItem, toFromPaths[1]);
var piSet = ReflectionX.GetPropertyByPath(primaryContent.GetType(), toFromPaths[0]);
piSet.SetValue(primaryContent, val);
}
}
}
yield return(primaryContent as T);
}
}
}
}
