public virtual async Task <IEnumerable <TEntity> > Where(Expression <Func <TEntity, bool> > query)
{
string name = query.Parameters[0].Name;
TEntity entity = (TEntity)Activator.CreateInstance(query.Parameters[0].Type);
Expression <Func <TEntity, bool> > newQuery = PredicateRewriter.Rewrite(query, "e");
return(await client.Cypher
.Match("(e:" + entity.Label + ")")
.Where(newQuery)
.Return(e => e.As <TEntity>())
.ResultsAsync);
}
internal static IAqlModifiable <TSource> InternalUpsert <TSource, TOld>(this IQueryable <TSource> source, Expression <Func <TSource, object> > searchExpression,
Expression <Func <TSource, object> > insertExpression, Expression <Func <TSource, TOld, object> > updateExpression, Type updateType)
{
source.AsAqlQueryable().StateValues["CrudFunction"] = "upsert";
var newUpdateExp = PredicateRewriter.Rewrite(updateExpression, "OLD");
return(source.Provider.CreateQuery <TSource>(
Expression.Call(
FindCachedMethod("InternalUpsert", typeof(TSource), typeof(TOld)),
source.Expression,
Expression.Quote(searchExpression),
Expression.Quote(insertExpression),
Expression.Quote(newUpdateExp),
Expression.Constant(updateType)
)).AsAqlQueryable().KeepState(source as IQueryableState) as IAqlModifiable <TSource>);
}
public virtual async Task <IEnumerable <TEntity2> > GetRelated <TEntity2, TRelationship>(Expression <Func <TEntity, bool> > query1, Expression <Func <TEntity2, bool> > query2, TRelationship relationship)
where TEntity2 : Neo4jEntity, new()
where TRelationship : Neo4jRelationship, new()
{
string name1 = query1.Parameters[0].Name;
TEntity entity1 = (TEntity)Activator.CreateInstance(query1.Parameters[0].Type);
string name2 = query2.Parameters[0].Name;
TEntity2 entity2 = (TEntity2)Activator.CreateInstance(query2.Parameters[0].Type);
Expression <Func <TEntity2, bool> > newQuery = PredicateRewriter.Rewrite(query2, "e");
return(await client.Cypher
.Match("(" + name1 + ":" + entity1.Label + ")-[:" + relationship.Name + "]->(" + name2 + ":" + entity2.Label + ")")
.Where(query1)
.AndWhere(query2)
.Return(e => e.As <TEntity2>())
.ResultsAsync);
}
