/// <summary>
/// Gets sub item of the specified EntityContainer instance by the name
/// </summary>
/// <param name="container">The EntityContainer instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(EntityContainer container, string name)
{
ODataUriItem result = null;
EntitySet entitySet;
bool isEntitySet = container.TryGetEntitySetByName(name, false, out entitySet);
if (isEntitySet)
{
return(new ODataUriItem(entitySet, UriType.URI1));
}
else
{
var fs = container.FunctionImports.Where(x => x.Name.Equals(name, StringComparison.Ordinal));
if (fs.Any())
{
EdmFunction func = fs.First();
var retVal = func.ReturnParameter;
var retType = retVal.TypeUsage.EdmType;
UriType retUriType = GetUriTypeOfFuncReturn(retType);
if (retUriType == UriType.URI11 || retUriType == UriType.URI13 || retUriType == UriType.URI_CollEt)
{
result = new ODataUriItem(((CollectionType)retType).TypeUsage.EdmType, retUriType);
}
else
{
result = new ODataUriItem(retType, retUriType);
}
}
}
return(result);
}
/// <summary>
/// Gets MetadataItem object for URI relative path under the specified EntityContainer instance
/// </summary>
/// <param name="container">The EntityContainer instance</param>
/// <param name="pathSegment">The URI relative path</param>
/// <param name="uriType">Output parameter of UriType value</param>
/// <returns>The MetadataItem instance if one is found; null otherwise</returns>
private static MetadataItem GetTargetType(EntityContainer container, IEnumerable <string> pathSegment, ref UriType uriType)
{
ODataUriItem curr = new ODataUriItem(container, UriType.URI_Container);
foreach (var segment in pathSegment)
{
// to normalize first segment
string segmentKey;
string segmentCore = ResourcePathHelper.ParseSegment(segment, out segmentKey);
ODataUriItem subItem = curr.GetItem(segmentCore);
if (subItem == null)
{
uriType = UriType.URIUNKNOWN;
return(null);
}
if (subItem.uriType == UriType.URI1 && !string.IsNullOrEmpty(segmentKey))
{
subItem = new ODataUriItem(((EntitySet)subItem.Item).ElementType, UriType.URI2);
}
curr = subItem;
}
uriType = curr.uriType;
return(curr.Item);
}
/// <summary>
/// Gets sub item of the specified ComplexType instance by the name
/// </summary>
/// <param name="type">The ComplexType instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(ComplexType type, string name)
{
ODataUriItem result = null;
EdmProperty property;
bool isProperty = type.Properties.TryGetValue(name, false, out property);
if (isProperty)
{
result = new ODataUriItem(property, property.BuiltInTypeKind == BuiltInTypeKind.ComplexType ? UriType.URI3 : UriType.URI5);
}
return(result);
}
/// <summary>
/// Gets ODataUriItem instance by specified name
/// </summary>
/// <param name="name">name of sub item</param>
/// <returns>sub-item if one is found; null otherwise</returns>
public ODataUriItem GetItem(string name)
{
switch (this.uriType)
{
case UriType.URI_Container:
return(GetItem((EntityContainer)this.Item, name));
case UriType.URI1:
return(GetItem((EntitySet)this.Item, name));
case UriType.URI2:
return(GetItem((EntityType)this.Item, name));
case UriType.URI3:
ComplexType ct = (ComplexType)((EdmProperty)this.Item).TypeUsage.EdmType;
return(GetItem(ct, name));
case UriType.URI4:
case UriType.URI5:
case UriType.URI14:
if (name.Equals("$value", StringComparison.Ordinal))
{
return(this);
}
else
{
return(null);
}
case UriType.URI6:
RelationshipEndMember asso = (RelationshipEndMember)this.Item;
var alias = new ODataUriItem(asso.GetEntityType(), UriType.URI2);
return(alias.GetItem(name));
case UriType.URI_Link:
var next = GetItem((EntityType)this.Item, name);
if (next.uriType == UriType.URI6)
{
return(new ODataUriItem(next.Item, UriType.URI7));
}
else
{
return(null);
}
default:
return(null);
}
}
/// <summary>
/// Gets collection of RelationshipEndMember as navigation targets along the navigation path from the EntityType object
/// </summary>
/// <param name="entityType">The EntityType instance to start with</param>
/// <param name="navigation">The navigation path</param>
/// <returns>Collection of navigation targets</returns>
public static IEnumerable<RelationshipEndMember> GetNavigationStack(EntityType entityType, IEnumerable<string> navigation)
{
var result = new List<RelationshipEndMember>();
EntityType currEntityType = entityType;
UriType uriType = UriType.URI2;
foreach(var nav in navigation)
{
ODataUriItem curr = new ODataUriItem(currEntityType, uriType);
var next = curr.GetItem(nav);
RelationshipEndMember navRole = (RelationshipEndMember)next.Item;
result.Add(navRole);
currEntityType = navRole.GetEntityType();
}
return result;
}
/// <summary>
/// Gets collection of RelationshipEndMember as navigation targets along the navigation path from the EntityType object
/// </summary>
/// <param name="entityType">The EntityType instance to start with</param>
/// <param name="navigation">The navigation path</param>
/// <returns>Collection of navigation targets</returns>
public static IEnumerable <RelationshipEndMember> GetNavigationStack(EntityType entityType, IEnumerable <string> navigation)
{
var result = new List <RelationshipEndMember>();
EntityType currEntityType = entityType;
UriType uriType = UriType.URI2;
foreach (var nav in navigation)
{
ODataUriItem curr = new ODataUriItem(currEntityType, uriType);
var next = curr.GetItem(nav);
RelationshipEndMember navRole = (RelationshipEndMember)next.Item;
result.Add(navRole);
currEntityType = navRole.GetEntityType();
}
return(result);
}
/// <summary>
/// Gets ODataUriItem instance by specified name
/// </summary>
/// <param name="name">name of sub item</param>
/// <returns>sub-item if one is found; null otherwise</returns>
public ODataUriItem GetItem(string name)
{
switch (this.uriType)
{
case UriType.URI_Container:
return GetItem((EntityContainer)this.Item, name);
case UriType.URI1:
return GetItem((EntitySet)this.Item, name);
case UriType.URI2:
return GetItem((EntityType)this.Item, name);
case UriType.URI3:
ComplexType ct = (ComplexType)((EdmProperty)this.Item).TypeUsage.EdmType;
return GetItem(ct, name);
case UriType.URI4:
case UriType.URI5:
case UriType.URI14:
if (name.Equals("$value", StringComparison.Ordinal))
{
return this;
}
else
{
return null;
}
case UriType.URI6:
RelationshipEndMember asso = (RelationshipEndMember)this.Item;
var alias = new ODataUriItem(asso.GetEntityType(), UriType.URI2);
return alias.GetItem(name);
case UriType.URI_Link:
var next = GetItem((EntityType)this.Item, name);
if (next.uriType == UriType.URI6)
{
return new ODataUriItem(next.Item, UriType.URI7);
}
else
{
return null;
}
default:
return null;
}
}
/// <summary>
/// Gets sub item of the specified EntityType instance by the name
/// </summary>
/// <param name="entityType">The EntityType instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(EntityType entityType, string name)
{
if (name.Equals("$links", StringComparison.Ordinal))
{
return(new ODataUriItem(entityType, UriType.URI_Link));
}
else if (name.Equals("$count", StringComparison.Ordinal))
{
return(new ODataUriItem(entityType, UriType.URI16));
}
else if (name.Equals("$value", StringComparison.Ordinal))
{
return(new ODataUriItem(entityType, UriType.URI17));
}
else
{
ODataUriItem result = null;
EdmProperty property;
bool isProperty = entityType.Properties.TryGetValue(name, false, out property);
if (isProperty)
{
EdmType targetType = property.TypeUsage.EdmType;
result = new ODataUriItem(property, targetType.BuiltInTypeKind == BuiltInTypeKind.ComplexType ? UriType.URI3 : UriType.URI5);
}
else
{
NavigationProperty navProperty;
bool isNavProperty = entityType.NavigationProperties.TryGetValue(name, false, out navProperty);
if (isNavProperty)
{
result = new ODataUriItem(navProperty.ToEndMember, UriType.URI6);
}
}
return(result);
}
}
/// <summary>
/// Gets sub item of the specified EntityContainer instance by the name
/// </summary>
/// <param name="container">The EntityContainer instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(EntityContainer container, string name)
{
ODataUriItem result = null;
EntitySet entitySet;
bool isEntitySet = container.TryGetEntitySetByName(name, false, out entitySet);
if (isEntitySet)
{
return new ODataUriItem(entitySet, UriType.URI1);
}
else
{
var fs = container.FunctionImports.Where(x => x.Name.Equals(name, StringComparison.Ordinal));
if (fs.Any())
{
EdmFunction func = fs.First();
var retVal = func.ReturnParameter;
var retType = retVal.TypeUsage.EdmType;
UriType retUriType = GetUriTypeOfFuncReturn(retType);
if (retUriType == UriType.URI11 || retUriType == UriType.URI13 || retUriType == UriType.URI_CollEt)
{
result = new ODataUriItem(((CollectionType)retType).TypeUsage.EdmType, retUriType);
}
else
{
result = new ODataUriItem(retType, retUriType);
}
}
}
return result;
}
/// <summary>
/// Gets sub item of the specified ComplexType instance by the name
/// </summary>
/// <param name="type">The ComplexType instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(ComplexType type, string name)
{
ODataUriItem result = null;
EdmProperty property;
bool isProperty = type.Properties.TryGetValue(name, false, out property);
if (isProperty)
{
result = new ODataUriItem(property, property.BuiltInTypeKind == BuiltInTypeKind.ComplexType ? UriType.URI3 : UriType.URI5);
}
return result;
}
/// <summary>
/// Gets sub item of the specified EntityType instance by the name
/// </summary>
/// <param name="entityType">The EntityType instance</param>
/// <param name="name">The name of sub item</param>
/// <returns>sub item object if one is found; null otherwise</returns>
private static ODataUriItem GetItem(EntityType entityType, string name)
{
if (name.Equals("$links", StringComparison.Ordinal))
{
return new ODataUriItem(entityType, UriType.URI_Link);
}
else if (name.Equals("$count", StringComparison.Ordinal))
{
return new ODataUriItem(entityType, UriType.URI16);
}
else if (name.Equals("$value", StringComparison.Ordinal))
{
return new ODataUriItem(entityType, UriType.URI17);
}
else
{
ODataUriItem result = null;
EdmProperty property;
bool isProperty = entityType.Properties.TryGetValue(name, false, out property);
if (isProperty)
{
EdmType targetType = property.TypeUsage.EdmType;
result = new ODataUriItem(property, targetType.BuiltInTypeKind == BuiltInTypeKind.ComplexType ? UriType.URI3 : UriType.URI5);
}
else
{
NavigationProperty navProperty;
bool isNavProperty = entityType.NavigationProperties.TryGetValue(name, false, out navProperty);
if (isNavProperty)
{
result = new ODataUriItem(navProperty.ToEndMember, UriType.URI6);
}
}
return result;
}
}
/// <summary>
/// Gets MetadataItem object for URI relative path under the specified EntityContainer instance
/// </summary>
/// <param name="container">The EntityContainer instance</param>
/// <param name="pathSegment">The URI relative path</param>
/// <param name="uriType">Output parameter of UriType value</param>
/// <returns>The MetadataItem instance if one is found; null otherwise</returns>
private static MetadataItem GetTargetType(EntityContainer container, IEnumerable<string> pathSegment, ref UriType uriType)
{
ODataUriItem curr = new ODataUriItem(container, UriType.URI_Container);
foreach (var segment in pathSegment)
{
// to normalize first segment
string segmentKey;
string segmentCore = ResourcePathHelper.ParseSegment(segment, out segmentKey);
ODataUriItem subItem = curr.GetItem(segmentCore);
if (subItem == null)
{
uriType = UriType.URIUNKNOWN;
return null;
}
if (subItem.uriType == UriType.URI1 && !string.IsNullOrEmpty(segmentKey))
{
subItem = new ODataUriItem(((EntitySet)subItem.Item).ElementType, UriType.URI2);
}
curr = subItem;
}
uriType = curr.uriType;
return curr.Item;
}
