public virtual bool IsTargetEntity(ObjectStateEntry item)
{
return item.State != EntityState.Detached &&
TargetType.IsInstanceOfType(item.Entity);
}
/// <summary>
/// Gets the identifier value for the entity in the ObjectStateEntry.
/// </summary>
/// <param name="objectStateEntry">The ObjectStateEntry.</param>
/// <returns>The identifier value.</returns>
/// <remarks>
/// When auditing Adds, this needs to be called AFTER SaveChanges, or else it will return null.
/// </remarks>
public static string GetIdentifierValue(ObjectStateEntry objectStateEntry)
{
if (objectStateEntry == null)
{
throw new ArgumentNullException("objectStateEntry");
}
string id = null;
var entityKey = objectStateEntry.EntityKey;
if (entityKey != null)
{
var keyValues = entityKey.EntityKeyValues;
if (keyValues != null)
{
if (keyValues.Length == 1)
{
id = keyValues[0].Value.ToString();
}
else if (keyValues.Length > 1)
{
id = string.Join(_composikeKeySeparator, keyValues.OrderBy(k => k.Key).Select(k => k.Value.ToString()).ToArray());
}
}
}
return id;
}
/// <summary>
/// Tracks the original value.
/// </summary>
/// <param name="objectStateEntry">The object state entry.</param>
private void TrackOriginalValue(ObjectStateEntry objectStateEntry)
{
object propertyValue = objectStateEntry.OriginalValues[PropertyName];
if (propertyValue != null)
{
OriginalValue = propertyValue.ToString();
}
}
/// <summary>
/// Tracks the new value.
/// </summary>
/// <param name="objectStateEntry">The object state entry.</param>
private void TrackNewValue(ObjectStateEntry objectStateEntry)
{
object propertyValue = objectStateEntry.CurrentValues[PropertyName];
if (propertyValue != null)
{
NewValue = propertyValue.ToString();
}
}
private static IEnumerable<Tuple<string, object, object>> GetUpdatedEntityValues(ObjectStateEntry entry)
{
foreach (string propname in entry.GetModifiedProperties())
{
object newval = entry.CurrentValues[propname];
object oldval = entry.OriginalValues[propname];
yield return Tuple.Create(propname, newval, oldval);
}
}
/// <summary>
/// Tracks the delete.
/// </summary>
/// <param name="objectStateEntry">The object state entry.</param>
public void TrackDelete(ObjectStateEntry objectStateEntry)
{
if (objectStateEntry == null)
{
throw new ArgumentNullException("objectStateEntry");
}
AuditEntities.Add(new EntityDeletedAudit(objectStateEntry));
RemoveReads();
}
public TrackingAuditEntity(ObjectStateEntry objectStateEntry, AuditEntityAction action)
{
if (objectStateEntry == null)
{
throw new ArgumentNullException("objectStateEntry");
}
EntityType = EntityTypeResolver.ResolveActualEntityType(objectStateEntry.Entity).Name;
EntityIdentifier = IdentifierUtility.GetIdentifierValue(objectStateEntry);
AuditEntityAction = action;
AuditEntityProperties = new Collection<AuditEntityProperty>();
}
private static IEnumerable<Tuple<string, object, object>> GetAddedEntityValues(ObjectStateEntry entry)
{
foreach (var propinfo in entry.CurrentValues.DataRecordInfo.FieldMetadata)
{
object newval = entry.CurrentValues[propinfo.FieldType.Name];
if (newval.GetType() == typeof(EntityKey))
{
newval = ((EntityKey)newval).EntityKeyValues.Select(k => k.Value).FirstOrDefault();
}
yield return Tuple.Create(propinfo.FieldType.Name, newval, (object)null);
}
}
/// <summary>
/// Tracks the properties.
/// </summary>
/// <param name="objectStateEntry">The object state entry.</param>
protected void TrackProperties(ObjectStateEntry objectStateEntry)
{
var currentValues = objectStateEntry.CurrentValues;
for (int ordinal = 0; ordinal < currentValues.FieldCount; ordinal++)
{
var propertyName = currentValues.GetName(ordinal);
if (!IsStoreGenerated(propertyName, objectStateEntry))
{
AuditEntityProperties.Add(new TrackingAuditEntityProperty(propertyName, objectStateEntry));
}
}
}
private static AuditAction GetAction(ObjectStateEntry entity)
{
switch (entity.State)
{
case EntityState.Added:
return AuditAction.Added;
case EntityState.Deleted:
return AuditAction.Deleted;
default:
return AuditAction.Modified;
}
}
/// <summary>
/// Tracks the properties.
/// </summary>
/// <param name="objectStateEntry">The object state entry.</param>
protected void TrackProperties(ObjectStateEntry objectStateEntry)
{
foreach (string propertyName in objectStateEntry.GetModifiedProperties())
{
if (!IsStoreGenerated(propertyName, objectStateEntry))
{
var auditProperty = new TrackingAuditEntityProperty(propertyName, objectStateEntry);
if (auditProperty.HasChanges)
{
AuditEntityProperties.Add(auditProperty);
}
}
}
}
internal ObjectStateEntryDbDataRecord(RelationshipEntry cacheEntry)
{
EntityUtil.CheckArgumentNull(cacheEntry, "cacheEntry");
Debug.Assert(!cacheEntry.IsKeyEntry, "Cannot create an ObjectStateEntryDbDataRecord for a key entry");
switch (cacheEntry.State)
{
case EntityState.Unchanged:
case EntityState.Modified:
case EntityState.Deleted:
_cacheEntry = cacheEntry;
break;
default:
Debug.Assert(false, "A DbDataRecord cannot be created for an entity object that is in an added or detached state.");
break;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="TrackingAuditEntityProperty"/> class.
/// </summary>
/// <param name="propertyName">Name of the property.</param>
/// <param name="objectStateEntry">The object state entry.</param>
public TrackingAuditEntityProperty(string propertyName, ObjectStateEntry objectStateEntry)
{
if (objectStateEntry == null)
{
throw new ArgumentNullException("objectStateEntry");
}
if (string.IsNullOrEmpty(propertyName))
{
throw new ArgumentNullException("propertyName");
}
PropertyName = propertyName;
TrackNewValue(objectStateEntry);
if (objectStateEntry.State == EntityState.Modified)
{
TrackOriginalValue(objectStateEntry);
}
}
static void ValidateBelongsTo(this AssociationEndMember end, ObjectStateEntry entry)
{
if (!entry.IsRelationship)
{
throw new ArgumentException("is not a relationship entry", "entry");
}
var fieldMetadata =
entry.UsableValues().DataRecordInfo.FieldMetadata;
if (fieldMetadata[0].FieldType as AssociationEndMember != end &&
fieldMetadata[1].FieldType as AssociationEndMember != end)
{
throw new InvalidOperationException(string.Format(
"association end {0} does not participate in the " +
"relationship {1}", end, entry));
}
}
internal ObjectStateEntryDbDataRecord(EntityEntry cacheEntry, StateManagerTypeMetadata metadata, object userObject)
{
//Contract.Requires(cacheEntry != null);
//Contract.Requires(userObject != null);
//Contract.Requires(metadata != null);
Debug.Assert(!cacheEntry.IsKeyEntry, "Cannot create an ObjectStateEntryDbDataRecord for a key entry");
switch (cacheEntry.State)
{
case EntityState.Unchanged:
case EntityState.Modified:
case EntityState.Deleted:
_cacheEntry = cacheEntry;
_userObject = userObject;
_metadata = metadata;
break;
default:
Debug.Assert(false, "A DbDataRecord cannot be created for an entity object that is in an added or detached state.");
break;
}
}
internal ObjectStateEntryDbDataRecord(EntityEntry cacheEntry, StateManagerTypeMetadata metadata, object userObject)
{
EntityUtil.CheckArgumentNull(cacheEntry, "cacheEntry");
EntityUtil.CheckArgumentNull(userObject, "userObject");
EntityUtil.CheckArgumentNull(metadata, "metadata");
Debug.Assert(!cacheEntry.IsKeyEntry, "Cannot create an ObjectStateEntryDbDataRecord for a key entry");
switch (cacheEntry.State)
{
case EntityState.Unchanged:
case EntityState.Modified:
case EntityState.Deleted:
_cacheEntry = cacheEntry;
_userObject = userObject;
_metadata = metadata;
break;
default:
Debug.Assert(false, "A DbDataRecord cannot be created for an entity object that is in an added or detached state.");
break;
}
}
/// <summary>
/// This determines if the value of the property is generated by the database (i.e. "Version"),
/// in which case we don't want to store it as modified by the user.
/// </summary>
/// <param name="propertyName"></param>
/// <param name="objectStateEntry"></param>
/// <returns></returns>
/// <remarks>
/// This could potentially be a performance bottleneck. If we need to speed things up,
/// we can cache this information by type and propertyname in a static dictionary.
/// </remarks>
protected static bool IsStoreGenerated(string propertyName, ObjectStateEntry objectStateEntry)
{
bool returnValue = false;
var metadataWorkspace = objectStateEntry.ObjectStateManager.MetadataWorkspace;
ItemCollection items = null;
if (metadataWorkspace.TryGetItemCollection(DataSpace.SSpace, out items))
{
var entityType = metadataWorkspace.GetItems<EntityType>(DataSpace.SSpace)
.FirstOrDefault(t => t.Name == objectStateEntry.EntitySet.Name || t.Name + "s" == objectStateEntry.EntitySet.Name);
if (entityType != null)
{
var edmProperty = entityType.Properties[propertyName];
var facet = edmProperty.TypeUsage.Facets.Where(f => f.Name == "StoreGeneratedPattern").FirstOrDefault();
if (facet != null)
{
var facetValue = facet.Value.ToString().ToUpperInvariant();
returnValue = (facetValue != "NONE");
}
}
}
return returnValue;
}
public AuditEntryState(ObjectStateEntry objectStateEntry)
{
if (objectStateEntry == null)
throw new ArgumentNullException("objectStateEntry");
if (objectStateEntry.Entity == null)
throw new ArgumentException("The Entity property is null for the specified ObjectStateEntry.", "objectStateEntry");
ObjectStateEntry = objectStateEntry;
Entity = objectStateEntry.Entity;
EntityType = objectStateEntry.EntitySet.ElementType as EntityType;
Type entityType = objectStateEntry.Entity.GetType();
entityType = ObjectContext.GetObjectType(entityType);
ObjectType = entityType;
EntityAccessor = TypeAccessor.GetAccessor(entityType);
AuditEntity = new AuditEntity(objectStateEntry.Entity)
{
Action = GetAction(objectStateEntry),
};
}
internal static Dictionary<string, object> DetermineEntityKey(ObjectStateEntry entryState)
{
Dictionary<string, object> key = entryState.EntityKey.EntityKeyValues.ToDictionary(kv => kv.Key, kv => kv.Value);
if (entryState.Entity is DeviceAttachment)
{
key["DeviceSerialNumber"] = ((DeviceAttachment)entryState.Entity).DeviceSerialNumber;
}
if (entryState.Entity is DeviceCertificate)
{
key["DeviceSerialNumber"] = ((DeviceCertificate)entryState.Entity).DeviceSerialNumber;
}
if (entryState.Entity is DeviceComponent)
{
key["DeviceModelId"] = ((DeviceComponent)entryState.Entity).DeviceModelId;
}
if (entryState.Entity is DeviceUserAssignment)
{
key["AssignedUserId"] = ((DeviceUserAssignment)entryState.Entity).AssignedUserId;
}
if (entryState.Entity is JobAttachment)
{
key["JobId"] = ((JobAttachment)entryState.Entity).JobId;
}
if (entryState.Entity is JobComponent)
{
key["JobId"] = ((JobComponent)entryState.Entity).JobId;
}
if (entryState.Entity is JobLog)
{
key["JobId"] = ((JobLog)entryState.Entity).JobId;
}
if (entryState.Entity is UserAttachment)
{
key["UserId"] = ((UserAttachment)entryState.Entity).UserId;
}
if (entryState.Entity is UserFlagAssignment)
{
key["UserFlagId"] = ((UserFlagAssignment)entryState.Entity).UserFlagId;
key["UserId"] = ((UserFlagAssignment)entryState.Entity).UserId;
}
return key;
}
private static IEnumerable<Tuple<string, object, object>> GetDeletedEntityValues(ObjectStateEntry entry)
{
yield return Tuple.Create(string.Empty, (object)null, (object)null);
}
internal static RepositoryMonitorEvent EventFromEntryState(DiscoDataContext Database, DbEntityEntry entityEntry, ObjectStateEntry entryState)
{
RepositoryMonitorEventType eventType;
string[] modifiedProperties = null;
Dictionary<string, object> entityKey = null;
Type entityType;
switch (entryState.State)
{
case System.Data.EntityState.Added:
eventType = RepositoryMonitorEventType.Added;
break;
case System.Data.EntityState.Deleted:
eventType = RepositoryMonitorEventType.Deleted;
break;
case System.Data.EntityState.Detached:
eventType = RepositoryMonitorEventType.Detached;
break;
case System.Data.EntityState.Modified:
eventType = RepositoryMonitorEventType.Modified;
break;
case System.Data.EntityState.Unchanged:
eventType = RepositoryMonitorEventType.Unchanged;
break;
default:
throw new NotSupportedException(string.Format("Database Entry State not supported: {0}", entryState.State.ToString()));
}
entityType = EntityTypeFromProxy(entryState.Entity.GetType());
// Only pass modified properties on Modified Event
if (eventType == RepositoryMonitorEventType.Modified)
modifiedProperties = entryState.GetModifiedProperties().ToArray();
else
modifiedProperties = new string[] { }; // Empty array for Added/Deleted.
// Don't pass entity key when entity newly added
if (eventType != RepositoryMonitorEventType.Added)
entityKey = DetermineEntityKey(entryState);
return new RepositoryMonitorEvent()
{
EventType = eventType,
Entity = entryState.Entity,
EntityKey = entityKey,
EntityType = entityType,
ModifiedProperties = modifiedProperties,
Database = Database,
dbEntityState = entityEntry,
objectEntryState = entryState
};
}
/// <summary>
/// Initializes a new instance of the <see cref="EntityAddedAudit"/> class.
/// </summary>
/// <param name="entry">The entry.</param>
public EntityAddedAudit(ObjectStateEntry entry)
: base(entry, AuditEntityAction.Add)
{
_objectStateEntry = entry;
}
object IGenericBusinessObj.ReadProperty(int index, ObjectStateEntry currentEntry)
{
return Adage.EF.BusObj.BusinessObjectHelper.ReadObjectValue(this, index, currentEntry);
}
/// <summary>
/// Convert an ObjectStateEntry object to a string representation
/// </summary>
/// <param name="entry">The given ObjectStateEntry</param>
/// <returns>The string representation</returns>
private static string ObjectStateEntryToString(ObjectStateEntry entry)
{
StringBuilder builder = new StringBuilder();
builder.AppendFormat("\n- <b>{0} ", entry.State.ToString());
if (entry.EntityKey == null)
{
if (entry.EntitySet == null)
builder.Append("Entity : null </b>[null]");
else
builder.AppendFormat("EntitySet : {0}</b>", entry.EntitySet.Name);
}
else
{
builder.AppendFormat("Entity : {0} </b>", entry.EntityKey.EntitySetName);
if (entry.EntityKey.IsTemporary)
{
builder.Append("[Temporary]");
}
else
{
foreach (var key in entry.EntityKey.EntityKeyValues)
{
builder.AppendFormat("[{0} = {1}]", key.Key, ObjectToString(key.Value));
}
}
}
return (builder.ToString());
}
internal DbUpdatableDataRecord(ObjectStateEntry cacheEntry, StateManagerTypeMetadata metadata, object userObject)
{
_cacheEntry = cacheEntry;
_userObject = userObject;
_metadata = metadata;
}
/// <summary>
/// Initializes a new instance of the <see cref="EntityDeletedAudit"/> class.
/// </summary>
/// <param name="entry">The entry.</param>
public EntityDeletedAudit(ObjectStateEntry entry)
: base(entry, AuditEntityAction.Delete)
{
}
internal CurrentValueRecord(ObjectStateEntry cacheEntry) :
base(cacheEntry)
{
}
public EntityUpdatedAudit(ObjectStateEntry entry)
: base(entry, AuditEntityAction.Update)
{
TrackProperties(entry);
}
internal DbUpdatableDataRecord(ObjectStateEntry cacheEntry)
:
this(cacheEntry, null, null)
{
}
internal OriginalValueRecord(ObjectStateEntry cacheEntry, StateManagerTypeMetadata metadata, object userObject) :
base(cacheEntry, metadata, userObject)
{
}
