public void Reset()
{
currentEntityLabel = 0;
currentModelIndex = 0;
XbimModel first = models.FirstOrDefault();
if (first != null)
{
cache = first.Cache;
this.cursor = cache.GetEntityTable();
cursor.MoveBeforeFirst();
}
}
bool IEnumerator.MoveNext()
{
int label;
if (cursor.TryMoveNextLabel(out label))
{
currentEntityLabel = label;
return(true);
}
else if (currentModelIndex < models.Count - 1) //we have more models to process
{
currentModelIndex++; //go to next model
cache.FreeTable(cursor);
cache = models[currentModelIndex].Cache;
this.cursor = cache.GetEntityTable();
cursor.MoveBeforeFirst();
if (cursor.TryMoveNextLabel(out label))
{
currentEntityLabel = label;
return(true);
}
}
return(false);
}
internal IfcFileHeader Read(IfcPersistedInstanceCache instanceCache, XbimEntityCursor entityTable, XmlReader input)
{
// Read until end of file
idMap = new Dictionary <string, int>();
lastId = 0;
_entitiesParsed = 0;
bool foundHeader = false;
IfcFileHeader header = new IfcFileHeader(IfcFileHeader.HeaderCreationMode.LeaveEmpty);
string headerId = "";
while (_currentNode == null && input.Read()) //read through to UOS
{
switch (input.NodeType)
{
case XmlNodeType.Element:
if (string.Compare(input.LocalName, "uos", true) == 0)
{
_currentNode = new XmlUosCollection();
}
else if (string.Compare(input.LocalName, "iso_10303_28", true) == 0)
{
foundHeader = true;
if (!string.IsNullOrWhiteSpace(input.Prefix))
{
_expressNamespace = input.Prefix;
_cTypeAttribute = _expressNamespace + ":cType";
_posAttribute = _expressNamespace + ":pos";
_expressNamespace += ":";
}
else
{
_cTypeAttribute = "cType";
_posAttribute = "pos";
} //correct the values if the namespace is defined correctly
while (input.MoveToNextAttribute())
{
if (input.Value == "urn:oid:1.0.10303.28.2.1.1" ||
input.Value == "urn:iso.org:standard:10303:part(28):version(2):xmlschema:common")
{
_expressNamespace = input.LocalName;
_cTypeAttribute = _expressNamespace + ":cType";
_posAttribute = _expressNamespace + ":pos";
_expressNamespace += ":";
break;
}
}
}
else
{
headerId = input.LocalName.ToLower();
}
break;
case XmlNodeType.Text:
switch (headerId)
{
case "name":
header.FileName.Name = input.Value;
break;
case "time_stamp":
header.FileName.TimeStamp = input.Value;
break;
case "author":
header.FileName.AuthorName.Add(input.Value);
break;
case "organization":
header.FileName.Organization.Add(input.Value);
break;
case "preprocessor_version":
header.FileName.PreprocessorVersion = input.Value;
break;
case "originating_system":
header.FileName.OriginatingSystem = input.Value;
break;
case "authorization":
header.FileName.AuthorizationName = input.Value;
break;
case "documentation":
header.FileDescription.Description.Add(input.Value);
break;
default:
break;
}
break;
default:
break;
}
}
if (!foundHeader)
{
throw new Exception("Invalid XML format, iso_10303_28 tag not found");
}
XmlNodeType prevInputType = XmlNodeType.None;
string prevInputName = "";
// set counter for start of every element that is not empty, and reduce it on every end of that element
try
{
using (var transaction = entityTable.BeginLazyTransaction())
{
// this will create id of each element
Dictionary <string, int> ids = new Dictionary <string, int>();
while (input.Read())
{
switch (input.NodeType)
{
case XmlNodeType.Element:
StartElement(instanceCache, input, entityTable, transaction);
break;
case XmlNodeType.EndElement:
IPersistIfcEntity toWrite;
//if toWrite has a value we have completed an Ifc Entity
EndElement(input, prevInputType, prevInputName, out toWrite);
if (toWrite != null)
{
_entitiesParsed++;
//now write the entity to the database
entityTable.AddEntity(toWrite);
if (_entitiesParsed % _transactionBatchSize == (_transactionBatchSize - 1))
{
transaction.Commit();
transaction.Begin();
}
}
break;
case XmlNodeType.Whitespace:
SetValue(input, prevInputType, prevInputName);
break;
case XmlNodeType.Text:
SetValue(input, prevInputType, prevInputName);
break;
default:
break;
}
prevInputType = input.NodeType;
prevInputName = input.LocalName;
}
transaction.Commit();
}
}
catch (Exception e)
{
throw new Exception(String.Format("Error reading XML, Line={0}, Position={1}, Tag='{2}'", ((IXmlLineInfo)input).LineNumber, ((IXmlLineInfo)input).LinePosition, input.LocalName), e);
}
return(header);
}
private void StartElement(IfcPersistedInstanceCache cache, XmlReader input, XbimEntityCursor entityTable, XbimLazyDBTransaction transaction)
{
string elementName = input.LocalName;
bool isRefType;
int? id = GetId(input, out isRefType);
IfcType ifcType;
IfcParserType parserType;
IfcMetaProperty prop;
int propIndex;
if (id.HasValue && IsIfcEntity(elementName, out ifcType)) //we have an element which is an Ifc Entity
{
IPersistIfcEntity ent;
if (!cache.Contains(id.Value))
{
// not been declared in a ref yet
// model.New creates an instance uisng type and id
ent = cache.CreateNew(ifcType.Type, id.Value);
}
else
{
ent = cache.GetInstance(id.Value, false, true);
}
XmlEntity xmlEnt = new XmlEntity(_currentNode, ent);
//if we have a completely empty element that is not a ref we need to make sure it is written to the database as EndElement will not be called
if (input.IsEmptyElement && !isRefType)
{
_entitiesParsed++;
//now write the entity to the database
entityTable.AddEntity(xmlEnt.Entity);
if (_entitiesParsed % _transactionBatchSize == (_transactionBatchSize - 1))
{
transaction.Commit();
transaction.Begin();
}
}
string pos = input.GetAttribute(_posAttribute);
if (string.IsNullOrEmpty(pos))
{
pos = input.GetAttribute("pos"); //try without namespace
}
if (!string.IsNullOrEmpty(pos))
{
xmlEnt.Position = Convert.ToInt32(pos);
}
if (!input.IsEmptyElement)
{
// add the entity to its parent if its parent is a list
//if (!(_currentNode is XmlUosCollection) && _currentNode is XmlCollectionProperty && !(_currentNode.Parent is XmlUosCollection))
// ((XmlCollectionProperty)_currentNode).Entities.Add(xmlEnt);
_currentNode = xmlEnt;
}
else if (_currentNode is XmlProperty)
{
// if it is a ref then it will be empty element and wont have an end tag
// so nither SetValue nor EndElement will be called, so set the value of ref here e.g. #3
((XmlProperty)(_currentNode)).SetValue(ent);
}
else if (!(_currentNode is XmlUosCollection) && _currentNode is XmlCollectionProperty && !(_currentNode.Parent is XmlUosCollection))
{
((XmlCollectionProperty)_currentNode).Entities.Add(xmlEnt);
}
}
else if (input.IsEmptyElement)
{
if (IsIfcProperty(elementName, out propIndex, out prop))
{
XmlProperty node = new XmlProperty(_currentNode, prop.PropertyInfo, propIndex);;
PropertyValue propVal = new PropertyValue();
Type t = node.Property.PropertyType;
if (!typeof(ExpressEnumerable).IsAssignableFrom(t)) // if its a empty collection then dont do anything
{
if (t != null && t.IsGenericType && t.GetGenericTypeDefinition().Equals(typeof(Nullable <>)))
{
t = Nullable.GetUnderlyingType(t);
}
ExpressType et = null;
if (t != null && typeof(ExpressType).IsAssignableFrom(t))
{
et = (ExpressType)(Activator.CreateInstance(t));
}
IfcParserType pt;
if (et != null)
{
pt = primitives[et.UnderlyingSystemType.Name];
}
else
{
if (t.IsEnum)
{
pt = IfcParserType.Enum;
}
else
{
pt = primitives[t.Name];
}
}
if (pt.ToString().ToLower() == "string")
{
propVal.Init("'" + input.Value + "'", pt);
}
else
{
if (pt.ToString().ToLower() == "boolean")
{
propVal.Init(Convert.ToBoolean(input.Value) ? ".T." : ".F", pt);
}
else
{
propVal.Init(input.Value, pt);
}
}
((XmlEntity)node.Parent).Entity.IfcParse(node.PropertyIndex - 1, propVal);
}
}
else if (IsIfcType(elementName, out ifcType))
{
IPersistIfc ent;
object[] param = new object[1];
param[0] = ""; // empty element
ent = (IPersistIfc)Activator.CreateInstance(ifcType.Type, param);
((XmlProperty)_currentNode).SetValue(ent);
}
return;
}
else if (!id.HasValue && IsIfcProperty(elementName, out propIndex, out prop)) //we have an element which is a property
{
string cType = input.GetAttribute(_cTypeAttribute);
if (string.IsNullOrEmpty(cType))
{
cType = input.GetAttribute("cType"); //in case namespace omitted
}
if (IsCollection(prop)) //the property is a collection
{
XmlCollectionProperty xmlColl = new XmlCollectionProperty(_currentNode, prop.PropertyInfo, propIndex);
switch (cType)
{
case "list":
xmlColl.CType = CollectionType.List;
break;
case "list-unique":
xmlColl.CType = CollectionType.ListUnique;
break;
case "set":
xmlColl.CType = CollectionType.Set;
break;
default:
xmlColl.CType = CollectionType.List;
break;
}
_currentNode = xmlColl;
}
else //it is a simple value property;
{
// its parent can be a collection, if yes then this property needs to be added to parent
XmlNode n = new XmlProperty(_currentNode, prop.PropertyInfo, propIndex);
if (_currentNode is XmlCollectionProperty && !(_currentNode.Parent is XmlUosCollection))
{
((XmlCollectionProperty)_currentNode).Entities.Add(n);
}
if (!input.IsEmptyElement)
{
_currentNode = n;
}
}
}
else if (!id.HasValue && IsIfcType(elementName, out ifcType)) // we have an Ifc ExpressType
{
// its parent can be a collection, if yes then this property needs to be added to parent
XmlNode n = new XmlExpressType(_currentNode, ifcType.Type);
if (_currentNode is XmlCollectionProperty && !(_currentNode.Parent is XmlUosCollection))
{
((XmlCollectionProperty)_currentNode).Entities.Add(n);
}
if (!input.IsEmptyElement)
{
_currentNode = n;
}
}
else if (!id.HasValue && IsPrimitiveType(elementName, out parserType)) // we have an basic type i.e. double, bool etc
{
// its parent can be a collection, if yes then this property needs to be added to parent
XmlNode n = new XmlBasicType(_currentNode, parserType);
if (_currentNode is XmlCollectionProperty && !(_currentNode.Parent is XmlUosCollection))
{
((XmlCollectionProperty)_currentNode).Entities.Add(n);
}
if (!input.IsEmptyElement)
{
_currentNode = n;
}
}
else
{
throw new Exception("Illegal XML element tag");
}
}
public XbimInstancesEntityEnumerator(IfcPersistedInstanceCache cache)
{
this.cache = cache;
this.cursor = cache.GetEntityTable();
Reset();
}
