public static QueryExecutionEngine Initialize(Dependencies deps, GraphDatabaseAPI graphAPI, IEnumerable <QueryEngineProvider> providers)
{
IList <QueryEngineProvider> engineProviders = new IList <QueryEngineProvider> {
providers
};
//JAVA TO C# CONVERTER TODO TASK: Method reference arbitrary object instance method syntax is not converted by Java to C# Converter:
engineProviders.sort(System.Collections.IComparer.comparingInt(QueryEngineProvider::enginePriority));
QueryEngineProvider provider = Iterables.firstOrNull(engineProviders);
if (provider == null)
{
return(NoEngine());
}
QueryExecutionEngine engine = provider.CreateEngine(deps, graphAPI);
return(deps.SatisfyDependency(engine));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldPickTheOneAndOnlyQueryEngineAvailable()
public virtual void ShouldPickTheOneAndOnlyQueryEngineAvailable()
{
// Given
QueryEngineProvider provider = mock(typeof(QueryEngineProvider));
when(provider.EnginePriority()).thenReturn(1);
Dependencies deps = new Dependencies();
GraphDatabaseAPI graphAPI = mock(typeof(GraphDatabaseAPI));
QueryExecutionEngine executionEngine = mock(typeof(QueryExecutionEngine));
when(provider.CreateEngine(any(), any())).thenReturn(executionEngine);
// When
IEnumerable <QueryEngineProvider> providers = Iterables.asIterable(provider);
QueryExecutionEngine engine = QueryEngineProvider.Initialize(deps, graphAPI, providers);
// Then
assertSame(executionEngine, engine);
}