//
// RelationshipEntry
//
public static bool IsRelationshipForKey(this ObjectStateEntry entry, EntityKey key)
{
if (entry.IsRelationship == false)
{
return(false);
}
return(((EntityKey)entry.UsableValues()[0] == key) || ((EntityKey)entry.UsableValues()[1] == key));
}
public static EntityKey OtherEndKey(this ObjectStateEntry relationshipEntry, EntityKey thisEndKey)
{
Debug.Assert(relationshipEntry.IsRelationship);
Debug.Assert(thisEndKey != (EntityKey)null);
if ((EntityKey)((IDataRecord)relationshipEntry.UsableValues())[0] == thisEndKey)
{
return((EntityKey)((IDataRecord)relationshipEntry.UsableValues())[1]);
}
if ((EntityKey)((IDataRecord)relationshipEntry.UsableValues())[1] == thisEndKey)
{
return((EntityKey)((IDataRecord)relationshipEntry.UsableValues())[0]);
}
throw new InvalidOperationException("Neither end of the relationship contains the passed in key.");
}
public static bool IsRelationshipForKey(this ObjectStateEntry entry, EntityKey key)
{
if (!entry.IsRelationship)
{
return(false);
}
return((EntityKey)((IDataRecord)entry.UsableValues())[0] == key || (EntityKey)((IDataRecord)entry.UsableValues())[1] == key);
}
public static string OtherEndRole(this ObjectStateEntry relationshipEntry, EntityKey thisEndKey)
{
Debug.Assert(relationshipEntry != null);
Debug.Assert(relationshipEntry.IsRelationship);
Debug.Assert(thisEndKey != null);
if ((EntityKey)relationshipEntry.UsableValues()[0] == thisEndKey)
{
return(relationshipEntry.UsableValues().DataRecordInfo.FieldMetadata[1].FieldType.Name);
}
else if ((EntityKey)relationshipEntry.UsableValues()[1] == thisEndKey)
{
return(relationshipEntry.UsableValues().DataRecordInfo.FieldMetadata[0].FieldType.Name);
}
else
{
throw new InvalidOperationException("Neither end of the relationship contains the passed in key.");
}
}
public static EdmType EdmType(this ObjectStateEntry entry)
{
return(entry.UsableValues().DataRecordInfo.RecordType.EdmType);
}