public FluentCommand Expand(ODataExpandOptions expandOptions)
{
Details.ExpandAssociations.Add(new KeyValuePair <ODataExpandAssociation, ODataExpandOptions>(
new ODataExpandAssociation("*"),
expandOptions));
return(this);
}
public async Task ExpandSubordinates2LevelsByReference()
{
var client = CreateClient("Northwind4.xml");
var command = client
.For <Employee>()
.Expand(ODataExpandOptions.ByReference(2), x => x.Subordinates);
string commandText = await command.GetCommandTextAsync();
Assert.Equal("Employees?$expand=Subordinates/$ref($levels=2)", commandText);
}
public async Task ExpandSubordinates2LevelsByValue()
{
var client = CreateClient("Northwind4.xml");
var command = client
.For <Employee>()
.Expand(ODataExpandOptions.ByValue(2), x => x.Subordinates);
var commandText = await command.GetCommandTextAsync().ConfigureAwait(false);
Assert.Equal("Employees?$expand=Subordinates($levels=2)", commandText);
}
private string FormatExpansionSegment(string path, EntityCollection entityCollection,
ODataExpandOptions expandOptions, IList<string> selectColumns, IList<KeyValuePair<string, bool>> orderbyColumns)
{
var items = path.Split('/');
var associationName = _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, items.First());
var clauses = new List<string>();
var text = associationName;
if (expandOptions.ExpandMode == ODataExpandMode.ByReference)
text += "/" + ODataLiteral.Ref;
if (items.Count() > 1)
{
path = path.Substring(items.First().Length + 1);
entityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
clauses.Add(string.Format("{0}={1}", ODataLiteral.Expand,
FormatExpansionSegment(path, entityCollection, expandOptions,
SelectExpansionSegmentColumns(selectColumns, path),
SelectExpansionSegmentColumns(orderbyColumns, path))));
}
if (expandOptions.Levels > 1)
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.Levels, expandOptions.Levels));
}
else if (expandOptions.Levels == 0)
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.Levels, ODataLiteral.Max));
}
if (selectColumns.Any())
{
var columns = string.Join(",", SelectExpansionSegmentColumns(selectColumns, null));
if (!string.IsNullOrEmpty(columns))
clauses.Add(string.Format("{0}={1}", ODataLiteral.Select, columns));
}
if (orderbyColumns.Any())
{
var columns = string.Join(",", SelectExpansionSegmentColumns(orderbyColumns, null)
.Select(x => x.Key + (x.Value ? " desc" : string.Empty)).ToList());
if (!string.IsNullOrEmpty(columns))
clauses.Add(string.Format("{0}={1}", ODataLiteral.OrderBy, columns));
}
if (clauses.Any())
text += string.Format("({0})", string.Join(";", clauses));
return text;
}
public FluentCommand Expand(ODataExpandOptions expandOptions, IEnumerable <ODataExpandAssociation> associations)
{
Details.ExpandAssociations.AddRange(associations.Select(x =>
new KeyValuePair <ODataExpandAssociation, ODataExpandOptions>(x, expandOptions)));
return(this);
}
private string FormatExpansionSegment(string path, EntityCollection entityCollection,
ODataExpandOptions expandOptions, IList <string> selectColumns, IList <KeyValuePair <string, bool> > orderbyColumns)
{
var items = path.Split('/');
var associationName = _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, items.First());
bool expandsToCollection = _session.Metadata.IsNavigationPropertyCollection(entityCollection.Name, associationName);
var clauses = new List <string>();
var text = associationName;
if (expandOptions.ExpandMode == ODataExpandMode.ByReference)
{
text += "/" + ODataLiteral.Ref;
}
if (items.Count() > 1)
{
path = path.Substring(items.First().Length + 1);
entityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
clauses.Add(string.Format("{0}={1}", ODataLiteral.Expand,
FormatExpansionSegment(path, entityCollection, expandOptions,
SelectPathSegmentColumns(selectColumns, path),
SelectPathSegmentColumns(orderbyColumns, path))));
}
if (expandOptions.Levels > 1)
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.Levels, expandOptions.Levels));
}
else if (expandOptions.Levels == 0)
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.Levels, ODataLiteral.Max));
}
if (selectColumns.Any())
{
var columns = string.Join(",", SelectPathSegmentColumns(selectColumns, null));
if (!string.IsNullOrEmpty(columns))
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.Select, columns));
}
}
if (expandsToCollection && orderbyColumns.Any())
{
var columns = string.Join(",", SelectPathSegmentColumns(orderbyColumns, null)
.Select(x => x.Key + (x.Value ? " desc" : string.Empty)).ToList());
if (!string.IsNullOrEmpty(columns))
{
clauses.Add(string.Format("{0}={1}", ODataLiteral.OrderBy, columns));
}
}
if (clauses.Any())
{
text += string.Format("({0})", string.Join(";", clauses));
}
return(text);
}
private string FormatExpansionSegment(ODataExpandAssociation association, EntityCollection entityCollection,
ODataExpandOptions expandOptions, ResolvedCommand command, bool rootLevel = true)
{
if (rootLevel)
{
association = command.Details.SelectColumns.Aggregate(association, MergeExpandAssociations);
association = command.Details.OrderbyColumns.Aggregate(association, MergeOrderByColumns);
}
var associationName = association.Name;
var expandsToCollection = false;
if (_session.Metadata.HasNavigationProperty(entityCollection.Name, associationName))
{
associationName = _session.Metadata.GetNavigationPropertyExactName(entityCollection.Name, associationName);
expandsToCollection = _session.Metadata.IsNavigationPropertyCollection(entityCollection.Name, associationName);
}
var clauses = new List <string>();
var text = associationName;
if (expandOptions.ExpandMode == ODataExpandMode.ByReference)
{
text += "/" + ODataLiteral.Ref;
}
if (expandOptions.Levels > 1)
{
clauses.Add($"{ODataLiteral.Levels}={expandOptions.Levels}");
}
else if (expandOptions.Levels == 0)
{
clauses.Add($"{ODataLiteral.Levels}={ODataLiteral.Max}");
}
if (associationName != StarString)
{
if (expandsToCollection && !ReferenceEquals(association.FilterExpression, null))
{
var associatedEntityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
clauses.Add(
$"{ODataLiteral.Filter}={EscapeUnescapedString(association.FilterExpression.Format(new ExpressionContext(_session, associatedEntityCollection, null, command.DynamicPropertiesContainerName)))}");
}
if (association.ExpandAssociations.Any())
{
var associatedEntityCollection = _session.Metadata.GetEntityCollection(
_session.Metadata.GetNavigationPropertyPartnerTypeName(entityCollection.Name, associationName));
var expandAll = association.ExpandAssociations.FirstOrDefault(a => a.Name == StarString);
if (expandAll != null)
{
clauses.Add($"{ODataLiteral.Expand}=*");
}
else
{
var expandedProperties = string.Join(",", association.ExpandAssociations
.Where(
a => _session.Metadata.HasNavigationProperty(associatedEntityCollection.Name, a.Name))
.Select(a =>
FormatExpansionSegment(a, associatedEntityCollection, ODataExpandOptions.ByValue(),
command,
false)));
if (!string.IsNullOrEmpty(expandedProperties))
{
clauses.Add($"{ODataLiteral.Expand}={expandedProperties}");
}
}
var selectColumns = string.Join(",", association.ExpandAssociations
.Where(a => a.Name != StarString &&
!_session.Metadata.HasNavigationProperty(associatedEntityCollection.Name, a.Name))
.Select(a => a.Name));
if (!string.IsNullOrEmpty(selectColumns))
{
clauses.Add($"{ODataLiteral.Select}={selectColumns}");
}
}
if (expandsToCollection && association.OrderByColumns.Any())
{
var columns = string.Join(",", association.OrderByColumns
.Select(o => o.Name + (o.Descending ? " desc" : string.Empty)));
if (!string.IsNullOrEmpty(columns))
{
clauses.Add($"{ODataLiteral.OrderBy}={columns}");
}
}
}
if (clauses.Any())
{
text += $"({string.Join(";", clauses)})";
}
return(text);
}
protected static IEnumerable <KeyValuePair <string, ODataExpandOptions> > FlatExpandAssociations(
IEnumerable <KeyValuePair <ODataExpandAssociation, ODataExpandOptions> > associations)
{
return(associations
.SelectMany(a => a.Key.ExpandAssociations.Any()
? FlatExpandAssociations(a.Key.ExpandAssociations.Select(x =>
new KeyValuePair <ODataExpandAssociation, ODataExpandOptions>(x,
ODataExpandOptions.ByValue())))
.Select(x => new KeyValuePair <string, ODataExpandOptions>(a.Key.Name + "/" + x.Key, x.Value))
: new[] { new KeyValuePair <string, ODataExpandOptions>(a.Key.Name, a.Value) })
.ToList());
}
public FT Expand(ODataExpandOptions expandOptions, Expression <Func <T, object> > expression)
{
Command.Expand(expandOptions, expression.ExtractExpandAssociations(_session.TypeCache));
return(this as FT);
}
public FT Expand(ODataExpandOptions expandOptions, params ODataExpression[] associations)
{
Command.Expand(expandOptions, associations.Select(a => ODataExpandAssociation.From(a.Reference)));
return(this as FT);
}
public FT Expand(ODataExpandOptions expandOptions, params string[] associations)
{
Command.Expand(expandOptions, associations.Select(ODataExpandAssociation.From));
return(this as FT);
}
public FT Expand(ODataExpandOptions expandOptions, IEnumerable <string> associations)
{
Command.Expand(expandOptions, associations.Select(ODataExpandAssociation.From));
return(this as FT);
}
public FT Expand(ODataExpandOptions expandOptions)
{
Command.Expand(expandOptions);
return(this as FT);
}