private BinaryOperatorNode BuildFilterExpression(SingleResourceNode source, GraphQLFieldSelection selection)
{
BinaryOperatorNode compositeNode = null;
IEdmEntityType entityType = source.NavigationSource.EntityType();
foreach (GraphQLArgument argument in selection.Arguments)
{
IEdmProperty edmProperty = FindEdmProperty(entityType, argument.Name.Value);
var left = new SingleValuePropertyAccessNode(source, edmProperty);
Object value = GetArgumentValue(edmProperty.Type, argument.Value);
var right = new ConstantNode(value, ODataUriUtils.ConvertToUriLiteral(value, ODataVersion.V4));
var node = new BinaryOperatorNode(BinaryOperatorKind.Equal, left, right);
compositeNode = ComposeExpression(compositeNode, node);
}
//foreach (ASTNode astNode in selection.SelectionSet.Selections)
// if (astNode is GraphQLFieldSelection fieldSelection && fieldSelection.SelectionSet != null)
// {
// var navigationProperty = (IEdmNavigationProperty)FindEdmProperty(entityType, fieldSelection.Name.Value);
// if (navigationProperty.Type is IEdmCollectionTypeReference)
// continue;
// var parentSource = new SingleNavigationNode(source, navigationProperty, null);
// BinaryOperatorNode node = BuildFilterExpression(parentSource, fieldSelection);
// compositeNode = ComposeExpression(compositeNode, node);
// }
return(compositeNode);
}
private void TestCast <TParam, TReturn>(SingleResourceNode source, IEdmEntityType cast, Expression <Func <TParam, TReturn> > expectedExpression)
{
var node = new SingleResourceCastNode(source, cast);
var result = this.testSubject.TranslateNode(node);
CompareExpressions(expectedExpression.Body, result);
}
public void TranslatorShouldConvertWeaklyBackedSingleEntityCast()
{
SingleResourceNode source = EntityParameter <Customer>("c");
QueryNode node = new SingleResourceCastNode(source, this.weaklyBackedCustomerEdmType);
var result = this.testSubject.TranslateNode(node);
var parameterExpression = Expression.Parameter(typeof(Customer), "c");
var expected = Expression.Call(typeof(DataServiceProviderMethods), "TypeAs", new[] { typeof(object) }, parameterExpression, Expression.Constant(this.weaklyBackedDerivedType));
CompareExpressions(expected, result);
}
private void TestNavigation <TParam, TReturn>(SingleResourceNode source, IEdmNavigationProperty navigation, Expression <Func <TParam, TReturn> > expectedExpression)
{
QueryNode node;
if (navigation.Type.IsCollection())
{
node = new CollectionNavigationNode(source, navigation, new EdmPathExpression(navigation.Name));
}
else
{
node = new SingleNavigationNode(source, navigation, new EdmPathExpression(navigation.Name));
}
var result = this.testSubject.TranslateNode(node);
CompareExpressions(expectedExpression.Body, result);
}
private BinaryOperatorNode BuildFilterExpression(SingleResourceNode source, GraphQLFieldSelection selection)
{
BinaryOperatorNode compositeNode = null;
IEdmEntityType entityType = source.NavigationSource.EntityType();
foreach (GraphQLArgument argument in selection.Arguments)
{
IEdmProperty edmProperty = FindEdmProperty(entityType, argument.Name.Value);
var left = new SingleValuePropertyAccessNode(source, edmProperty);
Object value = GetArgumentValue(edmProperty.Type, argument.Value);
var right = new ConstantNode(value, ODataUriUtils.ConvertToUriLiteral(value, ODataVersion.V4));
var node = new BinaryOperatorNode(BinaryOperatorKind.Equal, left, right);
compositeNode = ComposeExpression(compositeNode, node);
}
return(compositeNode);
}
public ChangeNavigationPathVisitor(SingleResourceNode parent, IEdmNavigationProperty navigationProperty)
{
_singleNavigationNode = new SingleNavigationNode(parent, navigationProperty, null);
}
