public static bool RegisterTrackablePocoMap(Type trackablePocoType)
{
if (BsonClassMap.IsClassMapRegistered(trackablePocoType))
{
return(false);
}
var classMap = new BsonClassMap(trackablePocoType);
var pocoType = TrackableResolver.GetPocoType(trackablePocoType);
// start with auto map
classMap.AutoMap();
// ignore extra elements for smooth schema change
classMap.SetIgnoreExtraElements(true);
// unmap all members which T doesn't have
var propertyNames = new HashSet <string>(pocoType.GetProperties().Select(p => p.Name));
var deletingMembers = classMap.DeclaredMemberMaps.Where(m =>
{
var propertyInfo = m.MemberInfo as PropertyInfo;
return(propertyInfo == null ||
propertyNames.Contains(propertyInfo.Name) == false);
}).ToList();
foreach (var m in deletingMembers)
{
classMap.UnmapMember(m.MemberInfo);
}
// set default ignore for saving spaces
foreach (var memberMap in classMap.DeclaredMemberMaps)
{
var mt = memberMap.MemberType;
var defaultValue = mt.IsValueType ? Activator.CreateInstance(mt) : null;
memberMap.SetDefaultValue(defaultValue);
memberMap.SetIgnoreIfDefault(true);
}
// tell customized id to mongo-db
var identityColumn = pocoType.GetProperties().FirstOrDefault(
p => TrackablePropertyAttribute.GetParameter(p, "mongodb.identity") != null);
if (identityColumn != null)
{
classMap.MapIdProperty(identityColumn.Name);
}
try
{
BsonClassMap.RegisterClassMap(classMap);
}
catch (ArgumentException)
{
// if duplicate key exists
return(false);
}
return(true);
}
public static bool RegisterClassMap(Type classType)
{
if (BsonClassMap.IsClassMapRegistered(classType))
{
return(false);
}
var classMap = new BsonClassMap(classType);
// start with auto map
classMap.AutoMap();
// ignore extra elements for smooth schema change
classMap.SetIgnoreExtraElements(true);
// unmap all members which has mongodb.ignore attribute
var deletingMembers = classMap
.DeclaredMemberMaps
.Where(m => { return(TrackablePropertyAttribute.GetParameter(m.MemberInfo, "mongodb.ignore") != null); })
.ToList();
foreach (var m in deletingMembers)
{
classMap.UnmapMember(m.MemberInfo);
}
// set default ignore for saving spaces
foreach (var memberMap in classMap.DeclaredMemberMaps)
{
var mt = memberMap.MemberType;
var defaultValue = mt.IsValueType ? Activator.CreateInstance(mt) : null;
memberMap.SetDefaultValue(defaultValue);
memberMap.SetIgnoreIfDefault(true);
}
try
{
BsonClassMap.RegisterClassMap(classMap);
}
catch (ArgumentException)
{
// if duplicate key exists
return(false);
}
return(true);
}
