private static IEnumerable <IAdapterCreator> GetAdapterCreators(DomNode node, Type type)
{
DomNodeType nodeType = node.Type;
if (nodeType.m_adapterCreatorCache == null)
{
nodeType.m_adapterCreatorCache = new Dictionary <Type, IEnumerable <IAdapterCreator> >();
}
IEnumerable <IAdapterCreator> adapterCreators;
if (!nodeType.m_adapterCreatorCache.TryGetValue(type, out adapterCreators))
{
// build an array of adapter creators that can adapt the node
List <IAdapterCreator> creators = new List <IAdapterCreator>();
while (nodeType != null)
{
if (nodeType.m_adapterCreators != null)
{
foreach (IAdapterCreator creator in nodeType.m_adapterCreators)
{
if (creator.CanAdapt(node, type))
{
creators.Add(creator);
}
}
}
nodeType = nodeType.BaseType;
}
// for empty arrays, use global instance
adapterCreators = (creators.Count > 0) ? creators.ToArray() : EmptyEnumerable <IAdapterCreator> .Instance;
// cache the result for subsequent searches
node.Type.m_adapterCreatorCache.Add(type, adapterCreators);
}
return(adapterCreators);
}
// try to obtain enumeration values from xml annotations
// Legacy ATF 2.8 example:
// <xs:simpleType name="EmotionType">
// <xs:annotation>
// <xs:appinfo>
// <scea.dom.editors.enumeration name="Adequate" displayName="Adequate, good enough"/>
// <scea.dom.editors.enumeration name="Capable" displayName="Capable, you betcha!"/>
// <scea.dom.editors.enumeration name="Enthusiastic" />
// </xs:appinfo>
// </xs:annotation>
// <xs:restriction base="xs:string">
// <xs:enumeration value="Adequate"/>
// <xs:enumeration value="Capable"/>
// <xs:enumeration value="Enthusiastic"/>
// </xs:restriction>
// </xs:simpleType>
private static string[] TryGetEnumeration(DomNodeType domNodeType, XmlNode annotation)
{
string[] enumeration = null;
XmlAttribute targetDomAttribute = annotation.Attributes[AnnotationsNameAttribute];
if (targetDomAttribute != null)
{
var domObjectAttribute = domNodeType.GetAttributeInfo(targetDomAttribute.Value);
if (domObjectAttribute != null)
{
var attributeType = domObjectAttribute.Type;
var xmlAnnotation = attributeType.GetTag <IEnumerable <XmlNode> >();
if (xmlAnnotation != null)
{
List <string> enumerationList = new List <string>();
foreach (XmlNode enumAnnotation in xmlAnnotation)
{
if (enumAnnotation.Name == AnnotationsLegacyEnumeration)
{
string name = enumAnnotation.Attributes[AnnotationsNameAttribute].Value;
XmlNode displayNode =
enumAnnotation.Attributes.GetNamedItem(AnnotationsDisplayNameAttribute);
if (displayNode != null)
{
enumerationList.Add(name + "==" + displayNode.Value);
}
else
{
enumerationList.Add(name);
}
}
enumeration = enumerationList.ToArray();
}
}
}
}
return(enumeration);
}
/// <summary>
/// Checks all property descriptors of adapter type and when an ObservableDomPropertyAttribute
/// is present on the descriptor, finds the AttributeInfo with matching name on the DomNodeType,
/// and sets PropertyChangedEventArgs tags to match</summary>
/// <param name="adapterType">Type of adapter</param>
/// <param name="nodeType">DomNode type</param>
private static void AddAttributeTags(Type adapterType, DomNodeType nodeType)
{
foreach (var property in adapterType.GetProperties())
{
object[] attributes = property.GetCustomAttributes(typeof(ObservableDomPropertyAttribute), true);
if (attributes != null && attributes.Length > 0)
{
var eventArgs = new PropertyChangedEventArgs(property.Name);
foreach (var attribute in attributes)
{
var attributeName = ((ObservableDomPropertyAttribute)attribute).AttributeName;
var currentType = nodeType;
var attributeInfo = currentType.GetAttributeInfo(attributeName);
Requires.NotNull(attributeInfo, "Unrecognized attribute name in ObservableDomPropertyAttribute");
// Each base type may have duplicate attributeInfo if it is an inherited attribute
// We need to set the tag on each base attributeInfo so that the PropertyChanged event
// will be raised even if the attribute is set on a base type
while (currentType != DomNodeType.BaseOfAllTypes && attributeInfo != null)
{
var args = attributeInfo.GetTagLocal <PropertyChangedEventArgsCollection>();
if (args == null)
{
args = new PropertyChangedEventArgsCollection();
attributeInfo.SetTag(args);
}
args.Add(eventArgs);
currentType = currentType.BaseType;
attributeInfo = currentType.GetAttributeInfo(attributeName);
}
}
}
}
}
/// <summary>
/// Constructor</summary>
/// <param name="name">Name of node type</param>
/// <param name="baseType">Base node type. 'null' equates to DomNodeType.BaseOfAllTypes</param>
/// <param name="attributes">Attributes for node type, or null</param>
/// <param name="children">Children for node type, or null</param>
/// <param name="extensions">Extensions for node type, or null</param>
public DomNodeType(
string name,
DomNodeType baseType,
IEnumerable <AttributeInfo> attributes,
IEnumerable <ChildInfo> children,
IEnumerable <ExtensionInfo> extensions)
: base(name)
{
SetBaseType(baseType);
if (attributes != null)
{
m_definitions.Attributes.AddRange(attributes);
}
if (children != null)
{
m_definitions.Children.AddRange(children);
}
if (extensions != null)
{
m_definitions.Extensions.AddRange(extensions);
}
}
/// <summary>
/// Constructor</summary>
/// <param name="name">Name of node type</param>
/// <param name="baseType">Base node type. 'null' equates to DomNodeType.BaseOfAllTypes</param>
/// <param name="metadata">Zero or more AttributeInfo, ChildInfo, or ExtensionInfo objects</param>
public DomNodeType(
string name,
DomNodeType baseType,
params FieldMetadata[] metadata)
: base(name)
{
SetBaseType(baseType);
foreach (FieldMetadata info in metadata)
{
if (info is AttributeInfo)
{
m_definitions.Attributes.Add((AttributeInfo)info);
}
else if (info is ChildInfo)
{
m_definitions.Children.Add((ChildInfo)info);
}
else if (info is ExtensionInfo)
{
m_definitions.Extensions.Add((ExtensionInfo)info);
}
}
}
/// <summary>
/// Gets the descendant metadata corresponding to the given path</summary>
/// <param name="path">Path to descendant, with ':' as separator</param>
/// <returns>Descendant metadata corresponding to the given path</returns>
public ChildInfo GetDescendantInfo(string path)
{
if (path == null)
{
throw new ArgumentNullException("path");
}
ChildInfo result = null;
DomNodeType type = this;
string[] segments = path.Split(':');
foreach (string segment in segments)
{
result = type.GetChildInfo(segment);
if (result == null)
{
break;
}
type = result.Type;
}
return(result);
}
/// <summary>
/// Adds a node type to the ones defined by the schema</summary>
/// <remarks>If the node type is already defined, it is overwritten</remarks>
/// <param name="name">Name of node type</param>
/// <param name="type">New node type</param>
public void AddNodeType(string name, DomNodeType type)
{
m_nodeTypeCollection.AddNodeType(name, type);
}
/// <summary>
/// Gets all node types derived from base type</summary>
/// <param name="baseType">Base type</param>
/// <remarks>Base type is not returned in the array.</remarks>
/// <returns>Enumeration of all node types derived from baseType</returns>
public IEnumerable <DomNodeType> GetNodeTypes(DomNodeType baseType)
{
return(m_nodeTypeCollection.GetNodeTypes(baseType));
}
private static PropertyDescriptor GetDescriptor(
DomNodeType type,
XmlNode annotation,
string name,
string[] segments)
{
PropertyDescriptor desc = null;
// Get mandatory display name
XmlAttribute displayNameAttr = annotation.Attributes["displayName"];
if (displayNameAttr != null)
{
if (string.IsNullOrEmpty(name))
{
throw new AnnotationException(string.Format(
"Required name attribute is null or empty.\r\nType: {0}\r\nElement: {1}",
type.Name, annotation.Name));
}
string displayName = displayNameAttr.Value;
if (string.IsNullOrEmpty(displayName))
{
displayName = name;
}
// Get optional annotations
string category = GetAnnotation(annotation, "category");
string description = GetAnnotation(annotation, "description");
bool readOnly = GetAnnotation(annotation, "readOnly") == "true";
object editor = CreateObject <object>(type, annotation, "editor");
TypeConverter typeConverter = CreateObject <TypeConverter>(type, annotation, "converter");
if (annotation.Name == "scea.dom.editors.attribute")
{
// Attribute annotation
if (segments == null)
{
throw new AnnotationException("Unnamed attribute");
}
if (segments.Length == 1) // local attribute
{
AttributeInfo metaAttr = type.GetAttributeInfo(name);
if (metaAttr == null)
{
throw new AnnotationException("Type doesn't have this attribute");
}
desc = new AttributePropertyDescriptor(
displayName, metaAttr,
category, description, readOnly, editor, typeConverter);
}
else // descendant attribute
{
ChildInfo[] metaElements = GetPath(type, segments, segments.Length - 1);
DomNodeType childType = metaElements[segments.Length - 2].Type;
AttributeInfo metaAttr = childType.GetAttributeInfo(segments[segments.Length - 1]);
if (metaAttr == null)
{
throw new AnnotationException("Descendant type doesn't have this attribute");
}
desc = new ChildAttributePropertyDescriptor(
displayName, metaAttr, metaElements,
category, description, readOnly, editor, typeConverter);
}
}
else if (annotation.Name == "scea.dom.editors.child")
{
// Child value annotation
ChildInfo element = type.GetChildInfo(name);
if (element == null)
{
throw new AnnotationException("Type doesn't have this element");
}
desc = new ChildPropertyDescriptor(
displayName, element,
category, description, readOnly, editor, typeConverter);
}
}
return(desc);
}
private void WalkParticle(XmlSchemaParticle particle, DomNodeType nodeType)
{
XmlSchemaElement element = particle as XmlSchemaElement;
if (element != null)
{
XmlSchemaSimpleType simpleType = element.ElementSchemaType as XmlSchemaSimpleType;
if (simpleType != null &&
element.MaxOccurs == 1)
{
XmlAttributeType attributeType = GetAttributeType(simpleType);
string fieldName = GetFieldName(element.QualifiedName);
XmlAttributeInfo attributeInfo = new XmlAttributeInfo(fieldName, attributeType);
nodeType.Define(attributeInfo);
m_annotations.Add(attributeInfo, GetAnnotation(element));
attributeInfo.IsElement = true;
if (element.DefaultValue != null)
{
if (element.FixedValue != null)
{
throw new InvalidOperationException(string.Format("Schema element {0} cannot have both a default value and a fixed value", element.QualifiedName));
}
attributeInfo.DefaultValue = attributeType.Convert(element.DefaultValue);
}
else if (element.FixedValue != null)
{
attributeInfo.DefaultValue = attributeType.Convert(element.FixedValue);
}
}
else
{
DomNodeType childNodeType = null;
if (simpleType != null)
{
bool firstTime;
childNodeType = WrapSimpleType(simpleType, out firstTime);
// The collada.xsd's ListOfUInts element breaks the generated Schema.cs file otherwise.
if (firstTime)
{
// Add the value attribute
XmlAttributeType valueAttributeType = GetAttributeType(simpleType);
var valueAttributeInfo = new XmlAttributeInfo(string.Empty, valueAttributeType);
childNodeType.Define(valueAttributeInfo);
}
}
else
{
XmlSchemaComplexType complexType = element.ElementSchemaType as XmlSchemaComplexType;
if (complexType != null)
{
childNodeType = GetNodeType(complexType, element);
}
}
if (childNodeType != null)
{
int minOccurs = (int)Math.Min(element.MinOccurs, Int32.MaxValue);
int maxOccurs = (int)Math.Min(element.MaxOccurs, Int32.MaxValue);
if (particle.Parent is XmlSchemaChoice)
{
var parent = (XmlSchemaChoice)particle.Parent;
if (parent.MinOccurs != 1)
{
minOccurs = (int)Math.Min(Math.Max(element.MinOccurs, parent.MinOccurs), Int32.MaxValue);
}
if (parent.MaxOccurs != 1)
{
maxOccurs = (int)Math.Min(Math.Max(element.MaxOccurs, parent.MaxOccurs), Int32.MaxValue);
}
}
else if (particle.Parent is XmlSchemaSequence)
{
var parent = (XmlSchemaSequence)particle.Parent;
if (parent.MinOccurs != 1)
{
minOccurs = (int)Math.Min(Math.Max(element.MinOccurs, parent.MinOccurs), Int32.MaxValue);
}
if (parent.MaxOccurs != 1)
{
maxOccurs = (int)Math.Min(Math.Max(element.MaxOccurs, parent.MaxOccurs), Int32.MaxValue);
}
}
ChildInfo childInfo = new ChildInfo(GetFieldName(element.QualifiedName), childNodeType, maxOccurs > 1);
if ((minOccurs > 0 || maxOccurs < Int32.MaxValue) &&
minOccurs <= maxOccurs)
{
childInfo.AddRule(new ChildCountRule(minOccurs, maxOccurs));
}
// Check for substitution groups
if (!element.RefName.IsEmpty)
{
m_refElements.Add(childInfo, element.RefName);
}
nodeType.Define(childInfo);
m_annotations.Add(childInfo, GetAnnotation(element));
}
}
}
else
{
XmlSchemaGroupBase grp = particle as XmlSchemaSequence;
if (grp == null)
{
grp = particle as XmlSchemaChoice;
}
if (grp == null)
{
grp = particle as XmlSchemaAll;
}
if (grp != null)
{
foreach (XmlSchemaParticle subParticle in grp.Items)
{
WalkParticle(subParticle, nodeType);
}
}
}
}
/// <summary>
/// Converts schemas to NodeTypes, AttributeTypes, and root elements</summary>
/// <param name="schemaSet">Schemas to register</param>
public void Load(XmlSchemaSet schemaSet)
{
if (!schemaSet.IsCompiled)
{
schemaSet.Compile();
}
System.Collections.ICollection schemas = schemaSet.Schemas();
foreach (XmlSchema schema in schemas)
{
string targetNamespace = schema.TargetNamespace;
if (string.IsNullOrEmpty(targetNamespace))
{
throw new InvalidOperationException("Schema has no target namespace");
}
// only register the schema once; targetNamespaces must be globally unique
if (!m_typeCollections.ContainsKey(targetNamespace))
{
XmlQualifiedName[] nameSpaces = schema.Namespaces.ToArray();
XmlSchemaTypeCollection typeCollection = new XmlSchemaTypeCollection(nameSpaces, targetNamespace, this);
m_typeCollections.Add(targetNamespace, typeCollection);
}
}
try
{
m_annotations = new Dictionary <NamedMetadata, IList <XmlNode> >();
m_typeNameSet = new HashSet <string>();
m_localElementSet = new Dictionary <XmlSchemaElement, XmlQualifiedName>();
// collect global element & type names so we do not generate local type names that collides with those
foreach (XmlSchemaElement element in schemaSet.GlobalElements.Values)
{
m_typeNameSet.Add(element.QualifiedName.Name);
}
foreach (XmlSchemaType type in schemaSet.GlobalTypes.Values)
{
if (type is XmlSchemaComplexType)
{
m_typeNameSet.Add(type.Name);
}
}
var substitutionGroups = new Multimap <XmlQualifiedName, ChildInfo>();
// Get types reachable from global elements
foreach (XmlSchemaElement element in schemaSet.GlobalElements.Values)
{
XmlSchemaType type = element.ElementSchemaType;
DomNodeType nodeType = GetNodeType(type, element);
ChildInfo childInfo = new ChildInfo(GetFieldName(element.QualifiedName), nodeType);
m_annotations.Add(childInfo, GetAnnotation(element));
// Keep list of substitution groups
if (!element.SubstitutionGroup.IsEmpty)
{
substitutionGroups.Add(element.SubstitutionGroup, childInfo);
}
// only add root elements once; root element names must be globally unique
string name = element.QualifiedName.ToString();
if (!m_rootElements.ContainsKey(name))
{
m_rootElements[name] = childInfo;
}
}
// Get global complex type definitions
foreach (XmlSchemaType type in schemaSet.GlobalTypes.Values)
{
if (type is XmlSchemaComplexType)
{
GetNodeType(type, null);
}
}
// Parse substitution groups
foreach (var kvp in m_refElements)
{
XmlQualifiedName refName = kvp.Value;
ChildInfo childInfo = kvp.Key;
var substitutions = CreateSubstitutions(substitutionGroups, refName).ToArray();
if (substitutions.Length > 0)
{
childInfo.AddRule(new SubstitutionGroupChildRule(substitutions));
}
}
// Preserve annotation from any types that were redefined
foreach (XmlSchema schema in schemas)
{
foreach (XmlSchemaObject schemaInclude in schema.Includes)
{
XmlSchemaRedefine schemaRedefine = schemaInclude as XmlSchemaRedefine;
if (schemaRedefine != null)
{
MergeRedefinedTypeAnnotations(schemaRedefine);
}
}
}
// Sort DomNodeTypes, so that base types are always before derived types
// Bucket sort by depth in the inheritance tree
// Time: O(n * d) with n = number of DomNodeTypes, d = depth of inheritance tree
var sortedTypes = new List <List <DomNodeType> >();
foreach (DomNodeType type in GetNodeTypes())
{
// Get inheritance depth of current type
int depth = 0;
DomNodeType curType = type;
while (curType != null && curType != DomNodeType.BaseOfAllTypes)
{
depth++;
curType = curType.BaseType;
}
// We don't need to merge annotations for BaseAllTypes (level 0)
// and its immediate child types (level 1)
int idx = depth - 2;
if (idx >= 0)
{
while (sortedTypes.Count <= idx)
{
sortedTypes.Add(new List <DomNodeType>());
}
sortedTypes[idx].Add(type);
}
}
// Merge type annotations with base type annotations
foreach (var list in sortedTypes)
{
foreach (DomNodeType type in list)
{
if (type.BaseType != null && type.BaseType != DomNodeType.BaseOfAllTypes)
{
IList <XmlNode> baseAnnotations;
IList <XmlNode> annotations;
if (m_annotations.TryGetValue(type.BaseType, out baseAnnotations) &&
m_annotations.TryGetValue(type, out annotations))
{
// Call protected virtual merge method - allowing clients to define if & how annotations are being merged
IEnumerable <XmlNode> mergedAnnotations = MergeInheritedTypeAnnotations(baseAnnotations, annotations);
m_annotations[type] = mergedAnnotations as IList <XmlNode> ?? mergedAnnotations.ToList();
}
}
}
}
// Call before the DomNodeTypes are frozen. Note that iterating through Attributes or
// calling 'SetIdAttribute' freezes the attributes on DomNodeType.
OnSchemaSetLoaded(schemaSet);
// Set up ID attributes where xs:ID has been specified
foreach (DomNodeType nodeType in GetNodeTypes())
{
foreach (var attribute in nodeType.Attributes.OfType <XmlAttributeInfo>())
{
if (((XmlAttributeType)attribute.Type).XmlTypeCode == XmlTypeCode.Id)
{
nodeType.SetIdAttribute(attribute.Name);
}
}
}
// Attach annotation as metadata to the associated type so that other classes can find it
foreach (var keyValuePair in m_annotations)
{
if (keyValuePair.Value.Count > 0)
{
keyValuePair.Key.SetTag <IEnumerable <XmlNode> >(keyValuePair.Value);
}
}
ParseAnnotations(schemaSet, m_annotations);
// Call this after the ID attributes have been set and after the DomNodeTypes are frozen.
OnDomNodeTypesFrozen(schemaSet);
}
finally
{
m_annotations = null;
m_typeNameSet = null;
m_localElementSet = null;
}
}
/// <summary>
/// Reads the node specified by the child metadata</summary>
/// <param name="nodeInfo">Child metadata for node</param>
/// <param name="reader">XML reader</param>
/// <returns>DomNode specified by the child metadata</returns>
protected virtual DomNode ReadElement(ChildInfo nodeInfo, XmlReader reader)
{
// handle polymorphism, if necessary
DomNodeType type = GetChildType(nodeInfo.Type, reader);
int index = type.Name.LastIndexOf(':');
string typeNS = type.Name.Substring(0, index);
DomNode node = new DomNode(type, nodeInfo);
// read attributes
while (reader.MoveToNextAttribute())
{
if (reader.Prefix == string.Empty ||
reader.LookupNamespace(reader.Prefix) == typeNS)
{
AttributeInfo attributeInfo = type.GetAttributeInfo(reader.LocalName);
if (attributeInfo != null)
{
string valueString = reader.Value;
if (attributeInfo.Type.Type == AttributeTypes.Reference)
{
// save reference so it can be resolved after all nodes have been read
m_nodeReferences.Add(new XmlNodeReference(node, attributeInfo, valueString));
}
else
{
object value = attributeInfo.Type.Convert(valueString);
node.SetAttribute(attributeInfo, value);
}
}
}
}
// add node to map if it has an id
if (node.Type.IdAttribute != null)
{
string id = node.GetId();
if (!string.IsNullOrEmpty(id))
{
m_nodeDictionary[id] = node; // don't Add, in case there are multiple DomNodes with the same id
}
}
reader.MoveToElement();
if (!reader.IsEmptyElement)
{
// read child elements
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
// look up metadata for this element
ChildInfo childInfo = type.GetChildInfo(reader.LocalName);
if (childInfo != null)
{
DomNode childObject = ReadElement(childInfo, reader);
// at this point, child is a fully populated sub-tree
if (childInfo.IsList)
{
node.GetChildList(childInfo).Add(childObject);
}
else
{
node.SetChild(childInfo, childObject);
}
}
else
{
// try reading as an attribute
AttributeInfo attributeInfo = type.GetAttributeInfo(reader.LocalName);
if (attributeInfo != null)
{
reader.MoveToElement();
if (!reader.IsEmptyElement)
{
// read element text
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Text)
{
object value = attributeInfo.Type.Convert(reader.Value);
node.SetAttribute(attributeInfo, value);
// skip child elements, as this is an attribute value
reader.Skip();
break;
}
if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
reader.MoveToContent();
}
}
else
{
// skip unrecognized element
reader.Skip();
// if that takes us to the end of the enclosing element, break
if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
}
}
else if (reader.NodeType == XmlNodeType.Text)
{
AttributeInfo attributeInfo = type.GetAttributeInfo(string.Empty);
if (attributeInfo != null)
{
object value = attributeInfo.Type.Convert(reader.Value);
node.SetAttribute(attributeInfo, value);
}
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
}
reader.MoveToContent();
return(node);
}
/// <summary>
/// Constructor</summary>
/// <param name="name">Field name</param>
/// <param name="type">Field type</param>
public ChildInfo(
string name,
DomNodeType type)
: this(name, type, false)
{
}
/// <summary>
/// Gets a derived node type, given a base type, namespace, and type name</summary>
/// <param name="baseType">Base node type</param>
/// <param name="ns">Type namespace</param>
/// <param name="typeName">Type name</param>
/// <returns>Derived node type</returns>
protected virtual DomNodeType GetDerivedType(DomNodeType baseType, string ns, string typeName)
{
return(m_typeLoader.GetNodeType(ns + ":" + typeName));
}
/// <summary>
/// Reads the node specified by the child metadata</summary>
/// <param name="nodeInfo">Child metadata for node</param>
/// <param name="reader">XML reader</param>
/// <returns>DomNode specified by the child metadata</returns>
protected virtual DomNode ReadElement(ChildInfo nodeInfo, XmlReader reader)
{
// handle polymorphism, if necessary
DomNodeType type = null;
var substitutionGroupRule = nodeInfo.Rules.OfType <SubstitutionGroupChildRule>().FirstOrDefault();
if (substitutionGroupRule != null)
{
foreach (var sub in substitutionGroupRule.Substitutions)
{
if (sub.Name == reader.LocalName)
{
type = sub.Type;
break;
}
}
if (type == null)
{
throw new InvalidOperationException("Could not match substitution group for child " + nodeInfo.Name);
}
}
else
{
type = GetChildType(nodeInfo.Type, reader);
}
int index = type.Name.LastIndexOf(':');
string typeNS = type.Name.Substring(0, index);
DomNode node = new DomNode(type, nodeInfo);
// read attributes
while (reader.MoveToNextAttribute())
{
if (reader.Prefix == string.Empty ||
reader.LookupNamespace(reader.Prefix) == typeNS)
{
AttributeInfo attributeInfo = type.GetAttributeInfo(reader.LocalName);
if (attributeInfo != null)
{
ReadAttribute(node, attributeInfo, reader.Value);
}
}
}
// add node to map if it has an id
if (node.Type.IdAttribute != null)
{
string id = node.GetId();
if (!string.IsNullOrEmpty(id))
{
m_nodeDictionary[id] = node; // don't Add, in case there are multiple DomNodes with the same id
}
}
reader.MoveToElement();
if (!reader.IsEmptyElement)
{
// read child elements
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
// look up metadata for this element
ChildInfo childInfo = type.GetChildInfo(reader.LocalName);
if (childInfo == null)
{
// Try and get substitution group
childInfo = GetSubsitutionGroup(type, reader.LocalName);
}
if (childInfo != null)
{
DomNode childNode = ReadElement(childInfo, reader);
if (childNode != null)
{
// childNode is fully populated sub-tree
if (childInfo.IsList)
{
node.GetChildList(childInfo).Add(childNode);
}
else
{
node.SetChild(childInfo, childNode);
}
}
}
else
{
// try reading as an attribute
AttributeInfo attributeInfo = type.GetAttributeInfo(reader.LocalName);
if (attributeInfo != null)
{
reader.MoveToElement();
if (!reader.IsEmptyElement)
{
// read element text
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Text)
{
ReadAttribute(node, attributeInfo, reader.Value);
// skip child elements, as this is an attribute value
reader.Skip();
break;
}
if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
reader.MoveToContent();
}
}
else
{
// skip unrecognized element
reader.Skip();
// if that takes us to the end of the enclosing element, break
if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
}
}
else if (reader.NodeType == XmlNodeType.Text)
{
AttributeInfo attributeInfo = type.GetAttributeInfo(string.Empty);
if (attributeInfo != null)
{
ReadAttribute(node, attributeInfo, reader.Value);
}
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
break;
}
}
}
reader.MoveToContent();
return(node);
}
/// <summary>
/// Writes the attributes corresponding to the node</summary>
/// <param name="node">DomNode to write</param>
/// <param name="writer">The XML writer. See <see cref="T:System.Xml.XmlWriter"/></param>
protected virtual void WriteAttributes(DomNode node, XmlWriter writer)
{
// write type name if this is a polymorphic type
// if this node is substitution group element then ignore type name
// unless it is a root node (for root node, substitution groups are ignored)
DomNodeType type = node.Type;
if (node.ChildInfo.Type != type &&
(IsRootNode(node) || node.ChildInfo.Rules.OfType <SubstitutionGroupChildRule>().FirstOrDefault() == null))
{
string name = type.Name;
int index = name.LastIndexOf(':');
if (index >= 0)
{
string typeName = name.Substring(index + 1, type.Name.Length - index - 1);
string typeNS = name.Substring(0, index);
string typePrefix = writer.LookupPrefix(typeNS);
if (typePrefix == null)
{
typePrefix = GeneratePrefix(typeNS);
writer.WriteAttributeString("xmlns", typePrefix, null, typeNS);
}
name = typeName;
if (typePrefix != string.Empty)
{
name = typePrefix + ":" + typeName;
}
}
writer.WriteAttributeString("xsi", "type", XmlSchema.InstanceNamespace, name);
}
// write attributes
AttributeInfo valueAttribute = null;
var attributesAsElements = new List <AttributeInfo>();
foreach (AttributeInfo attributeInfo in type.Attributes)
{
// if attribute is not the default, write it
if (ShouldWriteAttribute(node, attributeInfo))
{
if (attributeInfo.Name == string.Empty)
{
valueAttribute = attributeInfo;
}
else
{
if (PreserveSimpleElements)
{
var xmlAttributeInfo = attributeInfo as XmlAttributeInfo;
if (xmlAttributeInfo != null &&
xmlAttributeInfo.IsElement)
{
attributesAsElements.Add(xmlAttributeInfo);
continue;
}
}
WriteXmlAttribute(node, attributeInfo, writer);
}
}
}
// write value if not the default
if (valueAttribute != null)
{
string valueString = Convert(node, valueAttribute);
writer.WriteString(valueString);
}
// write DOM attributes that were originally XML elements of a simple type
foreach (AttributeInfo info in attributesAsElements)
{
writer.WriteStartElement(m_elementPrefix, info.Name, m_elementNS);
string valueString = Convert(node, info);
writer.WriteString(valueString);
writer.WriteEndElement();
}
}
/// <summary>
/// Writes the element corresponding to the DomNode</summary>
/// <param name="node">DomNode to write</param>
protected virtual void WriteElement(DomNode node, XmlWriter writer)
{
string elementNS = m_typeCollection.TargetNamespace;
int index = node.ChildInfo.Name.LastIndexOf(':');
if (index >= 0)
{
elementNS = node.ChildInfo.Name.Substring(0, index);
}
string elementPrefix = string.Empty;
// is this the root DomNode?
if (node.Parent == null)
{
elementPrefix = m_typeCollection.GetPrefix(elementNS);
if (elementPrefix == null)
{
elementPrefix = GeneratePrefix(elementNS);
}
writer.WriteStartElement(elementPrefix, node.ChildInfo.Name, elementNS);
// define the xsi namespace
writer.WriteAttributeString("xmlns", "xsi", null, XmlSchema.InstanceNamespace);
// define schema namespaces
foreach (XmlQualifiedName name in m_typeCollection.Namespaces)
{
if (name.Name != elementPrefix) // don't redefine the element namespace
{
writer.WriteAttributeString("xmlns", name.Name, null, name.Namespace);
}
}
}
else
{
// not the root, so all schema namespaces have been defined
elementPrefix = writer.LookupPrefix(elementNS);
if (elementPrefix == null)
{
elementPrefix = GeneratePrefix(elementNS);
}
writer.WriteStartElement(elementPrefix, node.ChildInfo.Name, elementNS);
}
// write type name if this is a polymorphic type
DomNodeType type = node.Type;
if (node.ChildInfo.Type != type)
{
string name = type.Name;
index = name.LastIndexOf(':');
if (index >= 0)
{
string typeName = name.Substring(index + 1, type.Name.Length - index - 1);
string typeNS = name.Substring(0, index);
string typePrefix = writer.LookupPrefix(typeNS);
if (typePrefix == null)
{
typePrefix = GeneratePrefix(typeNS);
writer.WriteAttributeString("xmlns", typePrefix, null, typeNS);
}
name = typeName;
if (typePrefix != string.Empty)
{
name = typePrefix + ":" + typeName;
}
}
writer.WriteAttributeString("xsi", "type", XmlSchema.InstanceNamespace, name);
}
// write attributes
AttributeInfo valueAttribute = null;
foreach (AttributeInfo attributeInfo in type.Attributes)
{
// if attribute is required, or not the default, write it
if (/*attributeInfo.Required ||*/ !node.IsAttributeDefault(attributeInfo))
{
if (attributeInfo.Name == string.Empty)
{
valueAttribute = attributeInfo;
}
else
{
object value = node.GetAttribute(attributeInfo);
string valueString = null;
if (attributeInfo.Type.Type == AttributeTypes.Reference)
{
// if reference is a valid node, convert to string
DomNode refNode = value as DomNode;
if (refNode != null)
{
valueString = GetNodeReferenceString(refNode, m_root, m_uri);
}
}
if (valueString == null)
{
valueString = attributeInfo.Type.Convert(value);
}
writer.WriteAttributeString(attributeInfo.Name, valueString);
}
}
}
// write value if not the default
if (valueAttribute != null)
{
object value = node.GetAttribute(valueAttribute);
writer.WriteString(valueAttribute.Type.Convert(value));
}
// write child elements
foreach (ChildInfo childInfo in type.Children)
{
if (childInfo.IsList)
{
foreach (DomNode child in node.GetChildList(childInfo))
{
WriteElement(child, writer);
}
}
else
{
DomNode child = node.GetChild(childInfo);
if (child != null)
{
WriteElement(child, writer);
}
}
}
writer.WriteEndElement();
}
private DomNodeType GetNodeType(XmlSchemaComplexType complexType, XmlSchemaElement element)
{
// get type name
XmlQualifiedName name = complexType.QualifiedName;
if (name.IsEmpty) // local type
{
name = GetLocalTypeName(element);
}
string typeName = name.ToString();
DomNodeType nodeType;
if (!m_nodeTypes.TryGetValue(typeName, out nodeType))
{
// build a new complex type and add it to the dictionary
nodeType = new DomNodeType(typeName);
m_nodeTypes.Add(typeName, nodeType);
m_annotations.Add(nodeType, GetAnnotation(complexType));
DomNodeType baseType = null;
XmlAttributeType valueType = null;
XmlSchemaComplexType complexBaseType = GetBaseType(complexType);
if (complexBaseType != null)
{
baseType = GetNodeType(complexBaseType, null);
}
XmlSchemaSimpleType simpleBase = complexType.BaseXmlSchemaType as XmlSchemaSimpleType;
if (simpleBase != null)
{
valueType = GetAttributeType(simpleBase);
}
else if (complexType.IsMixed)
{
valueType = s_mixedTextFieldSimpleType;
}
WalkParticle(complexType.ContentTypeParticle, nodeType);
if (valueType != null)
{
XmlAttributeInfo attributeInfo = new XmlAttributeInfo(string.Empty, valueType);
nodeType.Define(attributeInfo);
}
// get XML attributes
System.Collections.ICollection attributeUses = complexType.AttributeUses.Values;
foreach (XmlSchemaAttribute attribute in attributeUses)
{
XmlAttributeType attributeType = GetAttributeType(attribute.AttributeSchemaType);
string fieldName = GetFieldName(attribute.QualifiedName);
XmlAttributeInfo attributeInfo = new XmlAttributeInfo(fieldName, attributeType);
if (attribute.DefaultValue != null)
{
attributeInfo.DefaultValue = attributeType.Convert(attribute.DefaultValue);
}
m_annotations.Add(attributeInfo, GetAnnotation(attribute));
nodeType.Define(attributeInfo);
}
if (baseType != null)
{
nodeType.BaseType = baseType;
}
nodeType.IsAbstract = complexType.IsAbstract;
}
return(nodeType);
}
/// <summary>
/// Gets a derived node type given a base type, namespace, and type name</summary>
/// <param name="baseType">Base node type</param>
/// <param name="ns">Type namespace</param>
/// <param name="typeName">Type name</param>
/// <returns>Derived DomNodeType</returns>
protected virtual DomNodeType GetDerivedType(DomNodeType baseType, string ns, string typeName)
{
return(m_typeCollection.GetNodeType(typeName));
}
/// <summary>Adds a node type to the ones defined by the schema</summary>
/// <remarks>If the node type is already defined, it is overwritten</remarks>
/// <param name="name">Name of node type</param>
/// <param name="type">New node type</param>
public void AddNodeType(string name, DomNodeType type)
{
m_nodeTypes[name] = type;
}
private void WalkParticle(XmlSchemaParticle particle, DomNodeType nodeType)
{
XmlSchemaElement element = particle as XmlSchemaElement;
if (element != null)
{
XmlSchemaSimpleType simpleType = element.ElementSchemaType as XmlSchemaSimpleType;
if (simpleType != null &&
element.MaxOccurs == 1)
{
XmlAttributeType attributeType = GetAttributeType(simpleType);
string fieldName = GetFieldName(element.QualifiedName);
XmlAttributeInfo attributeInfo = new XmlAttributeInfo(fieldName, attributeType);
nodeType.Define(attributeInfo);
m_annotations.Add(attributeInfo, GetAnnotation(element));
attributeInfo.IsElement = true;
if (element.DefaultValue != null)
{
if (element.FixedValue != null)
{
throw new InvalidOperationException(string.Format("Schema element {0} cannot have both a default value and a fixed value", element.QualifiedName));
}
attributeInfo.DefaultValue = attributeType.Convert(element.DefaultValue);
}
else if (element.FixedValue != null)
{
attributeInfo.DefaultValue = attributeType.Convert(element.FixedValue);
}
}
else
{
DomNodeType childNodeType = null;
if (simpleType != null)
{
childNodeType = WrapSimpleType(simpleType);
// Add the value attribute
XmlAttributeType valueAttributeType = GetAttributeType(simpleType);
var valueAttributeInfo = new XmlAttributeInfo(string.Empty, valueAttributeType);
childNodeType.Define(valueAttributeInfo);
}
else
{
XmlSchemaComplexType complexType = element.ElementSchemaType as XmlSchemaComplexType;
if (complexType != null)
{
childNodeType = GetNodeType(complexType, element);
}
}
if (childNodeType != null)
{
int minOccurs = (int)Math.Min(element.MinOccurs, Int32.MaxValue);
int maxOccurs = (int)Math.Min(element.MaxOccurs, Int32.MaxValue);
// If <xs:choice> is within a <xs:sequence>, choose the most relaxed constraints.
if (particle.Parent is XmlSchemaChoice &&
particle.Parent.Parent is XmlSchemaSequence)
{
XmlSchemaChoice parent = (XmlSchemaChoice)particle.Parent;
int parentMinOccurs = (int)Math.Min(parent.MinOccurs, Int32.MaxValue);
int parentMaxOccurs = (int)Math.Min(parent.MaxOccurs, Int32.MaxValue);
minOccurs = Math.Min(parentMinOccurs, minOccurs);
maxOccurs = Math.Max(parentMaxOccurs, maxOccurs);
}
ChildInfo childInfo = new ChildInfo(GetFieldName(element.QualifiedName), childNodeType, maxOccurs > 1);
if (minOccurs > 0 || maxOccurs < Int32.MaxValue)
{
childInfo.AddRule(new ChildCountRule(minOccurs, maxOccurs));
}
// Check for substitution groups
if (!element.RefName.IsEmpty)
{
m_refElements.Add(childInfo, element.RefName);
}
nodeType.Define(childInfo);
m_annotations.Add(childInfo, GetAnnotation(element));
}
}
}
else
{
// if sequence, continue collecting elements
XmlSchemaSequence sequence = particle as XmlSchemaSequence;
if (sequence != null)
{
foreach (XmlSchemaParticle subParticle in sequence.Items)
{
WalkParticle(subParticle, nodeType);
}
}
else
{
XmlSchemaChoice choice = particle as XmlSchemaChoice;
if (choice != null)
{
// for now, treat choice as if it were a sequence
foreach (XmlSchemaParticle subParticle in choice.Items)
{
WalkParticle(subParticle, nodeType);
}
}
}
}
}
