public void Process(CreateReferenceCommand c)
{
XmlNode parentEntity = _Document.GetElementById(GetKey(c.ParentType, c.ParentId));
if(parentEntity == null)
throw new Exception("Not found parent Entity while creating Reference");
XmlElement reference;
parentEntity.AppendChild(reference = _Document.CreateElement("Reference"));
XmlAttribute name = reference.Attributes.Append(_Document.CreateAttribute("Role"));
name.Value = c.Role;
XmlAttribute child = reference.Attributes.Append(_Document.CreateAttribute("RefId"));
child.Value = GetKey(c.ChildType, c.ChildId);
}
internal Command CreateCommand(Entity e)
{
switch (e.Type)
{
case SyncUtils.CREATE_ENTITY:
CreateEntityCommand ce = new CreateEntityCommand(
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.TYPE)
);
return ce;
case SyncUtils.DELETE_ENTITY:
DeleteEntityCommand de = new DeleteEntityCommand(
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.TYPE)
);
return de;
case SyncUtils.CREATE_ATTRIBUTE:
CreateAttributeCommand ca = new CreateAttributeCommand(
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.PARENTTYPE),
e.GetString(SyncUtils.NAME),
MetaData.TypeResolver.GetType(e.GetString(SyncUtils.TYPE)),
Factory.Serializer.Unserialize(e.GetString(SyncUtils.VALUE))
);
return ca;
case SyncUtils.DELETE_ATTRIBUTE:
DeleteAttributeCommand da = new DeleteAttributeCommand(
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.PARENTTYPE),
e.GetString(SyncUtils.NAME),
MetaData.TypeResolver.GetType(e.GetString(SyncUtils.TYPE)),
null
);
return da;
case SyncUtils.UPDATE_ATTRIBUTE:
UpdateAttributeCommand ua = new UpdateAttributeCommand(
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.PARENTTYPE),
e.GetString(SyncUtils.NAME),
MetaData.TypeResolver.GetType(e.GetString(SyncUtils.TYPE)),
Factory.Serializer.Unserialize(e.GetString(SyncUtils.VALUE))
);
return ua;
case SyncUtils.CREATE_REFERENCE:
CreateReferenceCommand cr = new CreateReferenceCommand(
e.GetString(SyncUtils.ROLE),
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.PARENTTYPE),
e.GetString(SyncUtils.CHILDID),
e.GetString(SyncUtils.CHILDTYPE)
);
return cr;
case SyncUtils.DELETE_REFERENCE:
DeleteReferenceCommand dr = new DeleteReferenceCommand(
e.GetString(SyncUtils.ROLE),
e.GetString(SyncUtils.PARENTID),
e.GetString(SyncUtils.PARENTTYPE),
e.GetString(SyncUtils.CHILDID),
e.GetString(SyncUtils.CHILDTYPE)
);
return dr;
default:
throw new UniversalStorageException("Unexpected command type");
}
}
public override CreateReferenceCommand Visit(CreateReferenceCommand c)
{
_RWL.AcquireWriterLock();
try
{
Entity childEntity = GetEntity(c.ChildType, c.ChildId);
Entity parentEntity = GetEntity(c.ParentType, c.ParentId);
State tmpState = parentEntity.State;
if (c.Reference.Cardinality.IsToMany)
{
MultipleEntry me = (MultipleEntry)parentEntity[c.Role ?? c.Reference.Name];
if (me == null)
parentEntity.Add(me = new MultipleEntry(c.Role ?? c.Reference.Name));
me.Add(Entry.Create(c.Role ?? c.Reference.Name, tmpState, childEntity));
}
else
parentEntity.Add(c.Role ?? c.Reference.Name, childEntity);
parentEntity.State = tmpState;
}
finally
{
_RWL.ReleaseWriterLock();
}
return c;
}
public override CreateReferenceCommand Visit(CreateReferenceCommand c)
{
Entity e = new Entity(SyncUtils.CREATE_REFERENCE);
PopulateDefaults(e, c);
e.SetValue(SyncUtils.PARENTID, c.ParentId);
e.SetValue(SyncUtils.PARENTTYPE, c.ParentType);
e.SetValue(SyncUtils.ROLE, c.Role);
e.SetValue(SyncUtils.CHILDID, c.ChildId);
e.SetValue(SyncUtils.CHILDTYPE, c.ChildType);
transaction.Serialize(e);
return c;
}
public void Process(CreateReferenceCommand c)
{
// Exception management
ReferenceMapping referenceMapping = _Mapping.Entities[c.ParentType, true].References[c.Role, c.ParentType, c.ChildType];
Evaluant.Uss.Models.Entity current = _Engine.Model.GetEntity(c.ParentType);
if (referenceMapping == null)
{
while (referenceMapping == null && current != null)
{
Evaluant.Uss.Models.Entity currentChild = _Engine.Model.GetEntity(c.ChildType);
while (referenceMapping == null && currentChild != null)
{
referenceMapping = _Mapping.Entities[current.Type, true].References[c.Role, current.Type, currentChild.Type];
currentChild = _Engine.Model.GetParent(currentChild);
}
if (referenceMapping == null)
current = _Engine.Model.GetParent(current);
}
}
if (referenceMapping == null)
throw new MappingNotFoundException(String.Format("Rule mapping [{0}] not found for [{1}]", c.Role, c.ParentType));
string currentType = string.Empty;
if (current != null)
currentType = current.Type;
else
currentType = c.ParentType;
CacheReferenceEntry referenceEntry = _Engine.GetCacheEntityEntry(currentType).GetCreateReferenceEntries(referenceMapping.Name, referenceMapping.EntityParent.Type, referenceMapping.EntityChild);
foreach (CacheQueryEntry entry in referenceEntry.QueryEntries)
{
foreach (string table in referenceEntry.DisableTable)
DisableForeignKeys(table);
string cmdText = _Dialect.RenderQueries(entry.Query, _Driver)[0];
if (!string.IsNullOrEmpty(cmdText))
{
IDbCommand command = _Driver.CreateCommand(cmdText, _Connection, _Transaction);
foreach (Parameter param in entry.Parameters)
{
if (param.TagMapping is RuleMapping)
{
if (((RuleMapping)param.TagMapping).IsParentId)
{
EntityMapping parentMapping = ((RuleMapping)param.TagMapping).ParentReference.EntityParent;
string parentid = ConvertId(parentMapping, param.Name, c.ParentId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(parentMapping.Ids[GetIndexOfPrimaryKey(parentMapping, param.Name)].Generator), parentid));
}
else
{
EntityMapping childMapping = _Mapping.Entities[((RuleMapping)param.TagMapping).ParentReference.EntityChild, true];
string childid = ConvertId(childMapping, param.Name, c.ChildId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(childMapping.Ids[GetIndexOfPrimaryKey(childMapping, param.Name)].Generator), childid));
}
}
if (param.TagMapping is ReferenceMapping)
command.Parameters.Add(_Driver.CreateParameter(param.Name, DbType.String, c.Role));
if (param.TagMapping is EntityMapping)
{
EntityMapping mapping = param.TagMapping as EntityMapping;
IList children = _Engine.Model.GetTree(mapping.Type);
StringCollection childrenTypes = new StringCollection();
foreach (Evaluant.Uss.Models.Entity child in children)
childrenTypes.Add(child.Type);
if (childrenTypes.Contains(c.ParentType) && childrenTypes.Contains(c.ChildType))
{
if (param.UseParentValue)
{
string parentid = ConvertId(mapping, param.Name, c.ParentId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(mapping.Ids[GetIndexOfPrimaryKey(mapping, param.Name)].Generator), parentid));
}
else
{
string childid = ConvertId(mapping, param.Name, c.ChildId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(mapping.Ids[GetIndexOfPrimaryKey(mapping, param.Name)].Generator), childid));
}
}
else
{
if (childrenTypes.Contains(c.ParentType))
{
string parentid = ConvertId(mapping, param.Name, c.ParentId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(mapping.Ids[GetIndexOfPrimaryKey(mapping, param.Name)].Generator), parentid));
}
if (childrenTypes.Contains(c.ChildType))
{
string childid = ConvertId(mapping, param.Name, c.ChildId).ToString();
if (!command.Parameters.Contains(_Driver.FormatParameter(param.Name)))
command.Parameters.Add(_Driver.CreateParameter(param.Name, _Dialect.GetDbTypeToPrimaryKey(mapping.Ids[GetIndexOfPrimaryKey(mapping, param.Name)].Generator), childid));
}
}
}
}
command.Transaction = _Transaction;
if (_Engine.TraceSqlSwitch.Enabled)
{
TraceHelpler.Trace(command, _Dialect);
}
command.ExecuteNonQuery();
}
}
}
public abstract CreateReferenceCommand Visit(CreateReferenceCommand item);
/// <summary>
/// Generated a set of commands to be processed to take into account any modification applied to an entity graph
/// </summary>
/// <param name="entity">The Entity to compute</param>
/// <param name="processing">A collection of all currently processed entities</param>
/// <param name="commands">A collection of all currently created commands</param>
public void ComputeChanges(Entity entity, ICollection<Entity> processing, ICollection<Command> commands)
{
// Nothing to do if the entity is currently processed
if (processing.Contains(entity))
return;
processing.Add(entity);
// To know if we can optimize the command with a compound
bool canCreateCompound = true;
// Will contain the commands created for the attributes of the current entity
List<AttributeCommand> attributeCommands = new List<AttributeCommand>(entity.Count);
// First process all attributes not to increase the stack size because of deep hierarchies in the object graph and the recursive algorithm
if (entity.State == State.Modified || entity.State == State.New)
foreach (Entry e in entity)
{
if (!e.IsEntity)
{
// The current entry is an Attribute
switch (e.State)
{
case State.Deleted:
attributeCommands.Add(new DeleteAttributeCommand(e));
break;
case State.Modified:
attributeCommands.Add(new UpdateAttributeCommand(e));
break;
case State.New:
attributeCommands.Add(new CreateAttributeCommand(e));
break;
default:
break;
}
}
}
// Selects the optimized command
/// TODO: Add a property to PE so that the user could specify whether he wants all attributes to be sent with a compound command
switch (entity.State)
{
case State.New:
if (canCreateCompound)
commands.Add(new CompoundCreateCommand(entity, attributeCommands));
else
{
commands.Add(new CreateEntityCommand(entity));
foreach (Command attributeCommand in attributeCommands)
commands.Add(attributeCommand);
}
break;
case State.Deleted:
commands.Add(new DeleteEntityCommand(entity.Id, entity.Type));
break;
case State.Modified:
if (attributeCommands.Count > 1)
{
CompoundUpdateCommand cuc = new CompoundUpdateCommand(entity, attributeCommands);
commands.Add(cuc);
}
else
foreach (Command attributeCommand in attributeCommands)
commands.Add(attributeCommand);
break;
default:
foreach (Command attributeCommand in attributeCommands)
commands.Add(attributeCommand);
break;
}
foreach (Entry e in entity)
{
if (e.IsEntity)
{
Model.Reference referenceModel = Model.GetReference(entity.Type, e.Name);
if (e.IsMultiple)
{
foreach (Entity child in ((IEnumerable<Entity>)e))
{
ComputeChanges(child, processing, commands);
switch (e.State)
{
case State.New:
CreateReferenceCommand crc1 = new CreateReferenceCommand(referenceModel, entity, child);
commands.Add(crc1);
break;
case State.Deleted:
DeleteReferenceCommand drc = new DeleteReferenceCommand(referenceModel, entity, child);
commands.Add(drc);
break;
}
}
}
else
{
// The current entry is an Entity
Entity child = (Entity)e.Value;
ComputeChanges(child, processing, commands);
switch (e.State)
{
case State.New:
CreateReferenceCommand crc1 = new CreateReferenceCommand(referenceModel, entity, child);
commands.Add(crc1);
break;
case State.Deleted:
DeleteReferenceCommand drc = new DeleteReferenceCommand(referenceModel, entity, child);
commands.Add(drc);
break;
}
}
}
}
}
public override CreateReferenceCommand Visit(CreateReferenceCommand c)
{
_RWL.AcquireWriterLock(Timeout.Infinite);
try
{
Entity parentEntity = _Entities[CacheEngine.GetCacheKey(c.ParentType, c.ParentId)];
if (parentEntity == null)
return c;
Entity childEntity = new Entity(c.ChildType);
childEntity.Id = c.ChildId;
State tmpState = parentEntity.State;
parentEntity.Add(c.Role, childEntity, typeof(Entity), State.UpToDate);
parentEntity.State = tmpState;
}
finally
{
_RWL.ReleaseWriterLock();
}
return c;
}
