/// <summary>
/// Build a segment from a token.
/// </summary>
/// <param name="tokenIn">the token to bind</param>
/// <param name="model">The model.</param>
/// <param name="entityType">the entity type of the current scope based on type segments.</param>
/// <returns>The segment created from the token.</returns>
public static ODataPathSegment ConvertNonTypeTokenToSegment(PathSegmentToken tokenIn, IEdmModel model, IEdmEntityType entityType)
{
ODataPathSegment nextSegment;
if (TryBindAsDeclaredProperty(tokenIn, entityType, out nextSegment))
{
return(nextSegment);
}
// for open types, operations must be container-qualified, and because the token type indicates it was not a .-seperated identifier, we should not try to look up operations.
if (!entityType.IsOpen || tokenIn.IsNamespaceOrContainerQualified())
{
if (TryBindAsOperation(tokenIn, model, entityType, out nextSegment))
{
return(nextSegment);
}
}
if (entityType.IsOpen)
{
return(new OpenPropertySegment(tokenIn.Identifier));
}
throw new ODataException(ODataErrorStrings.MetadataBinder_PropertyNotDeclared(entityType.FullName(), tokenIn.Identifier));
}
/// <summary>
/// This method generates a <see cref="SingleValueOpenPropertyAccessNode"/> for properties of open type
/// </summary>
/// <param name="endPathToken">EndPathToken to bind into an open property node.</param>
/// <param name="parentNode">Parent node of this open property</param>
/// <returns>Will return a <see cref="SingleValueOpenPropertyAccessNode"/> when open types are supported</returns>
internal static SingleValueOpenPropertyAccessNode GeneratePropertyAccessQueryForOpenType(EndPathToken endPathToken, SingleValueNode parentNode)
{
DebugUtils.CheckNoExternalCallers();
if (parentNode.TypeReference != null && !parentNode.TypeReference.Definition.IsOpenType())
{
throw new ODataException(ODataErrorStrings.MetadataBinder_PropertyNotDeclared(
parentNode.TypeReference.ODataFullName(),
endPathToken.Identifier));
}
return(new SingleValueOpenPropertyAccessNode(parentNode, endPathToken.Identifier));
}
/// <summary>
/// Generate an expand item based on an ExpandTermToken
/// </summary>
/// <param name="tokenIn">the expandTerm token to visit</param>
/// <returns>the expand item for this expand term token.</returns>
private ExpandedNavigationSelectItem GenerateExpandItem(ExpandTermToken tokenIn)
{
ExceptionUtils.CheckArgumentNotNull(tokenIn, "tokenIn");
// ensure that we're always dealing with a normalized tree
if (tokenIn.PathToNavProp.NextToken != null && !tokenIn.PathToNavProp.IsNamespaceOrContainerQualified())
{
throw new ODataException(ODataErrorStrings.ExpandItemBinder_TraversingANonNormalizedTree);
}
PathSegmentToken currentToken = tokenIn.PathToNavProp;
IEdmEntityType currentLevelEntityType = this.entityType;
List <ODataPathSegment> pathSoFar = new List <ODataPathSegment>();
PathSegmentToken firstNonTypeToken = currentToken;
if (currentToken.IsNamespaceOrContainerQualified())
{
pathSoFar.AddRange(SelectExpandPathBinder.FollowTypeSegments(currentToken, this.Model, this.Settings.SelectExpandLimit, ref currentLevelEntityType, out firstNonTypeToken));
}
IEdmProperty edmProperty = currentLevelEntityType.FindProperty(firstNonTypeToken.Identifier);
if (edmProperty == null)
{
throw new ODataException(ODataErrorStrings.MetadataBinder_PropertyNotDeclared(currentLevelEntityType.FullName(), currentToken.Identifier));
}
IEdmNavigationProperty currentNavProp = edmProperty as IEdmNavigationProperty;
if (currentNavProp == null)
{
// the server allowed non-navigation, non-stream properties to be expanded, but then ignored them.
if (this.Settings.UseWcfDataServicesServerBehavior && !edmProperty.Type.IsStream())
{
return(null);
}
throw new ODataException(ODataErrorStrings.ExpandItemBinder_PropertyIsNotANavigationProperty(currentToken.Identifier, currentLevelEntityType.FullName()));
}
pathSoFar.Add(new NavigationPropertySegment(currentNavProp, /*entitySet*/ null));
ODataExpandPath pathToNavProp = new ODataExpandPath(pathSoFar);
SelectExpandClause subSelectExpand;
if (tokenIn.ExpandOption != null)
{
subSelectExpand = this.GenerateSubExpand(currentNavProp, tokenIn);
}
else
{
subSelectExpand = BuildDefaultSubExpand();
}
subSelectExpand = this.DecorateExpandWithSelect(subSelectExpand, currentNavProp, tokenIn.SelectOption);
IEdmEntitySet targetEntitySet = null;
if (this.entitySet != null)
{
targetEntitySet = this.entitySet.FindNavigationTarget(currentNavProp);
}
// call MetadataBinder to build the filter clause
FilterClause filterOption = null;
if (tokenIn.FilterOption != null)
{
MetadataBinder binder = this.BuildNewMetadataBinder(targetEntitySet);
FilterBinder filterBinder = new FilterBinder(binder.Bind, binder.BindingState);
filterOption = filterBinder.BindFilter(tokenIn.FilterOption);
}
// call MetadataBinder again to build the orderby clause
OrderByClause orderbyOption = null;
if (tokenIn.OrderByOption != null)
{
MetadataBinder binder = this.BuildNewMetadataBinder(targetEntitySet);
OrderByBinder orderByBinder = new OrderByBinder(binder.Bind);
orderbyOption = orderByBinder.BindOrderBy(binder.BindingState, new OrderByToken[] { tokenIn.OrderByOption });
}
return(new ExpandedNavigationSelectItem(pathToNavProp, targetEntitySet, filterOption, orderbyOption, tokenIn.TopOption, tokenIn.SkipOption, tokenIn.InlineCountOption, subSelectExpand));
}
/// <summary>
/// Binds a <see cref="InnerPathToken"/>.
/// This includes more than just navigations - it includes complex property access and primitive collections.
/// </summary>
/// <param name="segmentToken">The segment token to bind.</param>
/// <param name="state">The state of binding.</param>
/// <returns>The bound node.</returns>
internal QueryNode BindInnerPathSegment(InnerPathToken segmentToken, BindingState state)
{
DebugUtils.CheckNoExternalCallers();
FunctionCallBinder functionCallBinder = new FunctionCallBinder(this.bindMethod);
// First we get the parent node
QueryNode parent = this.DetermineParentNode(segmentToken, state);
Debug.Assert(parent != null, "parent should never be null");
SingleValueNode singleValueParent = parent as SingleValueNode;
if (singleValueParent == null)
{
QueryNode boundFunction;
if (functionCallBinder.TryBindInnerPathAsFunctionCall(segmentToken, parent, state, out boundFunction))
{
return(boundFunction);
}
throw new ODataException(ODataErrorStrings.MetadataBinder_PropertyAccessSourceNotSingleValue(segmentToken.Identifier));
}
// Using the parent and name of this token, we try to get the IEdmProperty it represents
IEdmProperty property = BindProperty(singleValueParent.TypeReference, segmentToken.Identifier);
if (property == null)
{
QueryNode boundFunction;
if (functionCallBinder.TryBindInnerPathAsFunctionCall(segmentToken, parent, state, out boundFunction))
{
return(boundFunction);
}
if (singleValueParent.TypeReference != null && !singleValueParent.TypeReference.Definition.IsOpenType())
{
throw new ODataException(
ODataErrorStrings.MetadataBinder_PropertyNotDeclared(
parent.GetEdmTypeReference().ODataFullName(), segmentToken.Identifier));
}
return(new SingleValueOpenPropertyAccessNode(singleValueParent, segmentToken.Identifier));
}
if (property.Type.IsODataComplexTypeKind())
{
return(new SingleValuePropertyAccessNode(singleValueParent, property));
}
// Note - this means nonentity collection (primitive or complex)
if (property.Type.IsNonEntityCollectionType())
{
return(new CollectionPropertyAccessNode(singleValueParent, property));
}
IEdmNavigationProperty navigationProperty = property as IEdmNavigationProperty;
if (navigationProperty == null)
{
throw new ODataException(ODataErrorStrings.MetadataBinder_IllegalSegmentType(property.Name));
}
SingleEntityNode parentEntity = EnsureParentIsEntityForNavProp(singleValueParent);
return(GetNavigationNode(navigationProperty, parentEntity, segmentToken.NamedValues, state, new KeyBinder(this.bindMethod)));
}