/// <summary>
/// Reads a an association link in atom:entry.
/// </summary>
/// <param name="entryState">The reader entry state for the entry being read.</param>
/// <param name="linkRelation">The rel attribute value for the link, unescaped parsed URI.</param>
/// <param name="linkHRef">The href attribute value for the link (or null if the href attribute was not present).</param>
/// <returns>true, if the association link was read succesfully, false otherwise.</returns>
/// <remarks>
/// Pre-Condition: XmlNodeType.Element atom:link - The atom:link element to read.
/// Post-Condition: Any - The node after the atom:link element if the link was read by this method.
/// XmlNodeType.Element atom:link - The atom:link element to read if the link was not read by this method.
/// </remarks>
private bool TryReadAssociationLinkInEntry(IODataAtomReaderEntryState entryState, string linkRelation, string linkHRef)
{
Debug.Assert(entryState != null, "entryState != null");
Debug.Assert(linkRelation != null, "linkRelation != null");
this.XmlReader.AssertNotBuffering();
this.AssertXmlCondition(XmlNodeType.Element);
Debug.Assert(
this.XmlReader.NamespaceURI == AtomConstants.AtomNamespace && this.XmlReader.LocalName == AtomConstants.AtomLinkElementName,
"The XML reader must be on the atom:link element for this method to work.");
string associationLinkName = AtomUtils.GetNameFromAtomLinkRelationAttribute(linkRelation, AtomConstants.ODataNavigationPropertiesAssociationLinkRelationPrefix);
if (string.IsNullOrEmpty(associationLinkName) || !this.ReadingResponse || this.MessageReaderSettings.MaxProtocolVersion < ODataVersion.V3)
{
return false;
}
ReaderValidationUtils.ValidateNavigationPropertyDefined(associationLinkName, entryState.EntityType, this.MessageReaderSettings);
// Get the type of the link
string asssociationLinkType = this.XmlReader.GetAttribute(this.AtomTypeAttributeName, this.EmptyNamespace);
if (asssociationLinkType != null &&
!HttpUtils.CompareMediaTypeNames(asssociationLinkType, MimeConstants.MimeApplicationXml))
{
throw new ODataException(o.Strings.ODataAtomEntryAndFeedDeserializer_InvalidTypeAttributeOnAssociationLink(associationLinkName));
}
ODataAssociationLink associationLink = new ODataAssociationLink { Name = associationLinkName };
// Allow null (we won't set the Url property) and empty (relative URL) values.
if (linkHRef != null)
{
associationLink.Url = this.ProcessUriFromPayload(linkHRef, this.XmlReader.XmlBaseUri);
}
entryState.DuplicatePropertyNamesChecker.CheckForDuplicatePropertyNames(associationLink);
ReaderUtils.AddAssociationLinkToEntry(entryState.Entry, associationLink);
// Read and store ATOM link metadata (captures extra info like lang, title) if ATOM metadata reading is turned on.
AtomLinkMetadata atomLinkMetadata = this.EntryMetadataDeserializer.ReadAtomLinkElementInEntryContent(linkRelation, linkHRef);
if (atomLinkMetadata != null)
{
associationLink.SetAnnotation(atomLinkMetadata);
}
this.XmlReader.Skip();
return true;
}
private bool TryReadAssociationLinkInEntry(IODataAtomReaderEntryState entryState, string linkRelation, string linkHRef)
{
string nameFromAtomLinkRelationAttribute = AtomUtils.GetNameFromAtomLinkRelationAttribute(linkRelation, "http://schemas.microsoft.com/ado/2007/08/dataservices/relatedlinks/");
if ((string.IsNullOrEmpty(nameFromAtomLinkRelationAttribute) || !base.ReadingResponse) || (base.MessageReaderSettings.MaxProtocolVersion < ODataVersion.V3))
{
return false;
}
ReaderValidationUtils.ValidateNavigationPropertyDefined(nameFromAtomLinkRelationAttribute, entryState.EntityType, base.MessageReaderSettings);
string attribute = base.XmlReader.GetAttribute(base.AtomTypeAttributeName, base.EmptyNamespace);
if ((attribute != null) && !HttpUtils.CompareMediaTypeNames(attribute, "application/xml"))
{
throw new ODataException(Microsoft.Data.OData.Strings.ODataAtomEntryAndFeedDeserializer_InvalidTypeAttributeOnAssociationLink(nameFromAtomLinkRelationAttribute));
}
ODataAssociationLink associationLink = new ODataAssociationLink {
Name = nameFromAtomLinkRelationAttribute
};
if (linkHRef != null)
{
associationLink.Url = base.ProcessUriFromPayload(linkHRef, base.XmlReader.XmlBaseUri);
}
entryState.DuplicatePropertyNamesChecker.CheckForDuplicatePropertyNames(associationLink);
ReaderUtils.AddAssociationLinkToEntry(entryState.Entry, associationLink);
AtomLinkMetadata annotation = this.EntryMetadataDeserializer.ReadAtomLinkElementInEntryContent(linkRelation, linkHRef);
if (annotation != null)
{
associationLink.SetAnnotation<AtomLinkMetadata>(annotation);
}
base.XmlReader.Skip();
return true;
}