private static Uri BuildNavigationNextPageLink(OeEntryFactory entryFactory, ExpandedNavigationSelectItem expandedNavigationSelectItem, Object value)
{
var segment = (NavigationPropertySegment)expandedNavigationSelectItem.PathToNavigationProperty.LastSegment;
IEdmNavigationProperty navigationProperty = segment.NavigationProperty;
if (navigationProperty.IsPrincipal())
{
navigationProperty = navigationProperty.Partner;
}
var keys = new List <KeyValuePair <IEdmStructuralProperty, Object> >();
IEnumerator <IEdmStructuralProperty> dependentProperties = navigationProperty.DependentProperties().GetEnumerator();
foreach (IEdmStructuralProperty key in navigationProperty.PrincipalProperties())
{
dependentProperties.MoveNext();
Object keyValue = entryFactory.GetAccessorByName(key.Name).GetValue(value);
keys.Add(new KeyValuePair <IEdmStructuralProperty, Object>(dependentProperties.Current, keyValue));
}
ResourceRangeVariableReferenceNode refNode = OeEdmClrHelper.CreateRangeVariableReferenceNode((IEdmEntitySet)segment.NavigationSource);
BinaryOperatorNode filterExpression = OeGetParser.CreateFilterExpression(refNode, keys);
if (expandedNavigationSelectItem.FilterOption != null)
{
filterExpression = new BinaryOperatorNode(BinaryOperatorKind.And, filterExpression, expandedNavigationSelectItem.FilterOption.Expression);
}
var segments = new ODataPathSegment[] { new EntitySetSegment((IEdmEntitySet)refNode.NavigationSource) };
var odataUri = new ODataUri()
{
Path = new ODataPath(segments),
Filter = new FilterClause(filterExpression, refNode.RangeVariable),
OrderBy = expandedNavigationSelectItem.OrderByOption,
SelectAndExpand = expandedNavigationSelectItem.SelectAndExpand,
Top = expandedNavigationSelectItem.TopOption,
Skip = expandedNavigationSelectItem.SkipOption,
QueryCount = expandedNavigationSelectItem.CountOption
};
return(odataUri.BuildUri(ODataUrlKeyDelimiter.Parentheses));
}
private static Uri BuildNavigationNextPageLink(IEdmModel edmModel, OeEntryFactory entryFactory, ExpandedNavigationSelectItem expandedNavigationSelectItem, Object value)
{
SingleValueNode filterExpression;
ResourceRangeVariableReferenceNode refNode;
var segment = (NavigationPropertySegment)expandedNavigationSelectItem.PathToNavigationProperty.LastSegment;
IEdmNavigationProperty navigationProperty = segment.NavigationProperty;
if (navigationProperty.ContainsTarget)
{
ModelBuilder.ManyToManyJoinDescription joinDescription = edmModel.GetManyToManyJoinDescription(navigationProperty);
navigationProperty = joinDescription.JoinNavigationProperty.Partner;
IEdmEntitySet joinNavigationSource = OeEdmClrHelper.GetEntitySet(edmModel, joinDescription.JoinNavigationProperty);
ResourceRangeVariableReferenceNode joinRefNode = OeEdmClrHelper.CreateRangeVariableReferenceNode(joinNavigationSource, "d");
IEdmEntitySet targetNavigationSource = OeEdmClrHelper.GetEntitySet(edmModel, joinDescription.TargetNavigationProperty);
ResourceRangeVariableReferenceNode targetRefNode = OeEdmClrHelper.CreateRangeVariableReferenceNode(targetNavigationSource);
var anyNode = new AnyNode(new Collection <RangeVariable>()
{
joinRefNode.RangeVariable, targetRefNode.RangeVariable
}, joinRefNode.RangeVariable)
{
Source = new CollectionNavigationNode(targetRefNode, joinDescription.TargetNavigationProperty.Partner, null),
Body = OeGetParser.CreateFilterExpression(joinRefNode, GetKeys(navigationProperty))
};
refNode = targetRefNode;
filterExpression = anyNode;
}
else
{
if (navigationProperty.IsPrincipal())
{
navigationProperty = navigationProperty.Partner;
}
refNode = OeEdmClrHelper.CreateRangeVariableReferenceNode((IEdmEntitySetBase)segment.NavigationSource);
filterExpression = OeGetParser.CreateFilterExpression(refNode, GetKeys(navigationProperty));
}
if (expandedNavigationSelectItem.FilterOption != null)
{
filterExpression = new BinaryOperatorNode(BinaryOperatorKind.And, filterExpression, expandedNavigationSelectItem.FilterOption.Expression);
}
var pathSegments = new ODataPathSegment[] { new EntitySetSegment((IEdmEntitySet)refNode.NavigationSource) };
var odataUri = new ODataUri()
{
Path = new ODataPath(pathSegments),
Filter = new FilterClause(filterExpression, refNode.RangeVariable),
OrderBy = expandedNavigationSelectItem.OrderByOption,
SelectAndExpand = expandedNavigationSelectItem.SelectAndExpand,
Top = expandedNavigationSelectItem.TopOption,
Skip = expandedNavigationSelectItem.SkipOption,
QueryCount = expandedNavigationSelectItem.CountOption
};
return(odataUri.BuildUri(ODataUrlKeyDelimiter.Parentheses));
List <KeyValuePair <IEdmStructuralProperty, Object> > GetKeys(IEdmNavigationProperty edmNavigationProperty)
{
var keys = new List <KeyValuePair <IEdmStructuralProperty, Object> >();
IEnumerator <IEdmStructuralProperty> dependentProperties = edmNavigationProperty.DependentProperties().GetEnumerator();
foreach (IEdmStructuralProperty key in edmNavigationProperty.PrincipalProperties())
{
dependentProperties.MoveNext();
Object keyValue = entryFactory.GetAccessorByName(key.Name).GetValue(value);
keys.Add(new KeyValuePair <IEdmStructuralProperty, Object>(dependentProperties.Current, keyValue));
}
return(keys);
}
}
