private void AddField(Content content, List <Property> expandTree, ODataEntity fields,
string fieldName, HttpContext httpContext, Func <Content, HttpContext, object> getFieldValue)
{
var expansion = GetPropertyFromList(fieldName, expandTree);
AddField(content, expansion, fields, fieldName, httpContext, getFieldValue);
}
private void AddField(Content content, Property expansion, ODataEntity fields,
string fieldName, HttpContext httpContext, Func <Content, HttpContext, object> getFieldValue)
{
fields.Add(fieldName,
expansion == null
? ODataReference.Create(string.Concat(GetSelfUrl(content), "/", fieldName))
: getFieldValue?.Invoke(content, httpContext));
}
private ODataEntity Project(Content content, List <Property> expandTree, HttpContext httpContext)
{
var outfields = new ODataEntity();
var selfurl = GetSelfUrl(content);
if (this.Request.EntityMetadata != MetadataFormat.None)
{
outfields.Add("__metadata", GetMetadata(content, selfurl, this.Request.EntityMetadata, httpContext));
}
var fields = content.Fields.Values;
var expansionEnabled = !content.ContentHandler.IsHeadOnly;
foreach (var field in fields)
{
if (ODataMiddleware.DisabledFieldNames.Contains(field.Name))
{
continue;
}
var propertyName = field.Name;
var expansion = expansionEnabled ? GetExpansion(propertyName, expandTree) : null;
if (expansion != null)
{
outfields.Add(propertyName, Project(field, expansion.Children, httpContext));
}
else
{
outfields.Add(propertyName,
base.IsAllowedField(content, field.Name) ? ODataWriter.GetJsonObject(field, selfurl) : null);
}
}
AddField(content, expandTree, outfields, ACTIONSPROPERTY, httpContext, GetActions);
AddField(content, expandTree, outfields, ODataMiddleware.ChildrenPropertyName, httpContext, (c, ctx) =>
{
// disable autofilters by default the same way as in ODataWriter.WriteChildrenCollection
c.ChildrenDefinition.EnableAutofilters =
Request.AutofiltersEnabled != FilterStatus.Default
? Request.AutofiltersEnabled
: FilterStatus.Disabled;
var expansion = GetExpansion(ODataMiddleware.ChildrenPropertyName, expandTree);
return(ProjectMultiRefContents(c.Children.AsEnumerable().Select(cnt => cnt.ContentHandler), expansion.Children, httpContext));
});
if (!outfields.ContainsKey(ICONPROPERTY))
{
outfields.Add(ICONPROPERTY, content.Icon ?? content.ContentType.Icon);
}
outfields.Add(ISFILEPROPERTY, content.Fields.ContainsKey(ODataMiddleware.BinaryPropertyName));
return(outfields);
}
internal override ODataEntity Project(Content content, HttpContext httpContext)
{
var fields = new ODataEntity();
var selfurl = GetSelfUrl(content);
if (Request.EntityMetadata != MetadataFormat.None)
{
fields.Add("__metadata", GetMetadata(content, selfurl, Request.EntityMetadata, httpContext));
}
IEnumerable <string> fieldNames;
if (Request.HasSelect)
{
fieldNames = Request.Select;
}
else
{
if (IsCollectionItem)
{
if (_fieldNamesForPaths.ContainsKey(content.ContentHandler.ParentPath))
{
fieldNames = _fieldNamesForPaths[content.ContentHandler.ParentPath];
}
else
{
_fieldNamesForPaths[content.ContentHandler.ParentPath] = fieldNames = content.GetFieldNamesInParentTable();
}
if (content.AspectFields != null && content.AspectFields.Count > 0)
{
fieldNames = fieldNames.Concat(content.AspectFields.Keys);
}
}
else
{
fieldNames = content.Fields.Keys;
}
}
if (Request.HasSelect)
{
foreach (var selectItem in Request.Select)
{
if (selectItem.Contains("/"))
{
throw new ODataException("Bad item in $select: " + selectItem, ODataExceptionCode.InvalidSelectParameter);
}
}
}
if (!Request.HasSelect)
{
fieldNames = fieldNames.Concat(new[] { ACTIONSPROPERTY, ISFILEPROPERTY, ODataMiddleware.ChildrenPropertyName });
}
foreach (var fieldName in fieldNames)
{
if (fields.ContainsKey(fieldName))
{
continue;
}
if (ODataMiddleware.DisabledFieldNames.Contains(fieldName))
{
fields.Add(fieldName, null);
continue;
}
if (IsAllowedField(content, fieldName))
{
if (content.Fields.TryGetValue(fieldName, out var field))
{
fields.Add(fieldName, ODataWriter.GetJsonObject(field, selfurl));
}
else if (fieldName == ACTIONSPROPERTY)
{
fields.Add(ACTIONSPROPERTY, ODataReference.Create(String.Concat(selfurl, "/", ODataMiddleware.ActionsPropertyName)));
}
else if (fieldName == ISFILEPROPERTY)
{
fields.Add(ISFILEPROPERTY, content.Fields.ContainsKey(ODataMiddleware.BinaryPropertyName));
}
else if (fieldName == ICONPROPERTY)
{
fields.Add(fieldName, content.Icon ?? content.ContentType.Icon);
}
else if (fieldName == ODataMiddleware.ChildrenPropertyName)
{
fields.Add(fieldName, ODataReference.Create(string.Concat(selfurl, "/", ODataMiddleware.ChildrenPropertyName)));
}
else
{
fields.Add(fieldName, null);
}
}
else
{
fields.Add(fieldName, null);
}
}
return(fields);
}
private ODataEntity Project(Content content, List <Property> expandTree, List <Property> selectTree, HttpContext httpContext)
{
var outfields = new ODataEntity();
var selfurl = GetSelfUrl(content);
if (this.Request.EntityMetadata != MetadataFormat.None)
{
outfields.Add("__metadata", GetMetadata(content, selfurl, this.Request.EntityMetadata, httpContext));
}
var hasJoker = false;
foreach (var property in selectTree)
{
var propertyName = property.Name;
if (propertyName == "*")
{
hasJoker = true;
continue;
}
if (!content.Fields.TryGetValue(propertyName, out var field))
{
var expansion = GetPropertyFromList(propertyName, expandTree);
switch (propertyName)
{
case ACTIONSPROPERTY:
AddField(content, expansion, outfields, propertyName, httpContext, (c, ctx) =>
{
var actions = Content.CreateCollection(GetActions(c, ctx), ODataActionItem.Ctd);
return(ProjectMultiRefContents(actions.Select(cnt => cnt.ContentHandler),
expansion.Children, property.Children, httpContext));
});
break;
case ICONPROPERTY:
outfields.Add(ICONPROPERTY, content.Icon ?? content.ContentType.Icon);
break;
case ISFILEPROPERTY:
outfields.Add(ISFILEPROPERTY, content.Fields.ContainsKey(ODataMiddleware.BinaryPropertyName));
break;
case ODataMiddleware.ChildrenPropertyName:
AddField(content, expansion, outfields, propertyName, httpContext,
(c, ctx) =>
{
// disable autofilters by default the same way as in ODataWriter.WriteChildrenCollection
c.ChildrenDefinition.EnableAutofilters =
Request.AutofiltersEnabled != FilterStatus.Default
? Request.AutofiltersEnabled
: FilterStatus.Disabled;
return(ProjectMultiRefContents(
c.Children.AsEnumerable().Select(cnt => cnt.ContentHandler), expansion.Children,
property.Children, httpContext));
});
break;
default:
outfields.Add(propertyName, null);
break;
}
}
else
{
if (ODataMiddleware.DisabledFieldNames.Contains(field.Name))
{
outfields.Add(propertyName, null);
}
else
{
var expansion = GetPropertyFromList(propertyName, expandTree);
if (expansion != null)
{
outfields.Add(propertyName, Project(field, expansion.Children, property.Children ?? Property.JokerList, httpContext));
}
else
{
outfields.Add(propertyName,
IsAllowedField(content, field.Name)
? ODataWriter.GetJsonObject(field, selfurl)
: null);
}
}
}
}
if (hasJoker)
{
foreach (var contentField in content.Fields.Values)
{
if (outfields.ContainsKey(contentField.Name))
{
continue;
}
var propertyName = contentField.Name;
var expansion = GetPropertyFromList(propertyName, expandTree);
outfields.Add(propertyName,
expansion != null
? Project(contentField, expansion.Children, Property.JokerList, httpContext)
: ODataWriter.GetJsonObject(contentField, selfurl));
}
}
return(outfields);
}
