private ImplementedByExpression CombineIB(ImplementedByExpression a, ImplementedByExpression b, Type type, Func <Expression, Expression, Expression> combiner)
{
return(new ImplementedByExpression(type, a.Strategy,
a.Implementations.OuterJoinDictionaryCC(b.Implementations,
(t, ia, ib) => CombineEntity(ia ?? NullEntity(t), ib ?? NullEntity(t), t, combiner)
)));
}
static Expression EntityIn(Expression newItem, Dictionary <Type, PrimaryKey[]> entityIDs)
{
EntityExpression ee = newItem as EntityExpression;
if (ee != null)
{
return(InPrimaryKey(ee.ExternalId, entityIDs.TryGetC(ee.Type) ?? new PrimaryKey[0]));
}
ImplementedByExpression ib = newItem as ImplementedByExpression;
if (ib != null)
{
return(ib.Implementations.JoinDictionary(entityIDs,
(t, f, values) => Expression.And(DbExpressionNominator.FullNominate(NotEqualToNull(f.ExternalId)), InPrimaryKey(f.ExternalId, values)))
.Values.AggregateOr());
}
ImplementedByAllExpression iba = newItem as ImplementedByAllExpression;
if (iba != null)
{
return(entityIDs.Select(kvp => Expression.And(
EqualNullable(new PrimaryKeyExpression(QueryBinder.TypeConstant(kvp.Key).Nullify()), iba.TypeId.TypeColumn),
InPrimaryKey(iba.Id, kvp.Value))).AggregateOr());
}
throw new InvalidOperationException("EntityIn not defined for newItem of type {0}".FormatWith(newItem.Type.Name));
}
static Expression IbIbaEquals(ImplementedByExpression ib, ImplementedByAllExpression iba)
{
var list = ib.Implementations.Values.Select(i =>
Expression.And(
i.ExternalId.Value == NewId ? (Expression)False : EqualNullable(iba.Id, new SqlCastExpression(typeof(string), i.ExternalId.Value)),
EqualNullable(iba.TypeId.TypeColumn.Value, QueryBinder.TypeConstant(i.Type)))).ToList();
return(list.AggregateOr());
}
protected internal virtual Expression VisitImplementedBy(ImplementedByExpression ib)
{
var implementations = Visit(ib.Implementations, v => (EntityExpression)Visit(v));
if (implementations != ib.Implementations)
{
return(new ImplementedByExpression(ib.Type, ib.Strategy, implementations));
}
return(ib);
}
static Expression FieIbEquals(EntityExpression ee, ImplementedByExpression ib)
{
var imp = ib.Implementations.TryGetC(ee.Type);
if (imp == null)
{
return(False);
}
return(EqualNullable(imp.ExternalId.Value, ee.ExternalId.Value));
}
static Expression EntityIbEquals(EntityExpression ee, ImplementedByExpression ib)
{
var imp = ib.Implementations.TryGetC(ee.Type);
if (imp == null)
{
return(False);
}
return(EntityEntityEquals(imp, ee));
}
protected override Expression VisitImplementedBy(ImplementedByExpression reference)
{
throw InvalidSqlExpression(reference);
}
static Expression IbIbEquals(ImplementedByExpression ib, ImplementedByExpression ib2)
{
var list = ib.Implementations.JoinDictionary(ib2.Implementations, (t, i, j) => EqualNullable(i.ExternalId.Value, j.ExternalId.Value)).Values.ToList();
return(list.AggregateOr());
}
protected internal override Expression VisitImplementedBy(ImplementedByExpression reference)
{
throw InvalidSqlExpression(reference);
}
protected virtual bool CompareImplementedBy(ImplementedByExpression a, ImplementedByExpression b)
{
return(CompareDictionaries(a.Implementations, b.Implementations, Compare));
}
static Expression IbIbEquals(ImplementedByExpression ib, ImplementedByExpression ib2)
{
var list = ib.Implementations.JoinDictionary(ib2.Implementations, (t, i, j) => EntityEntityEquals(i, j)).Values.ToList();
return(list.AggregateOr());
}
internal override Expression GetExpression(Alias tableAlias, QueryBinder binder, Expression id)
{
var implementations = ImplementationColumns.SelectDictionary(t => t, (t, ic) =>
new EntityExpression(t, new PrimaryKeyExpression(new ColumnExpression(ic.Type.Nullify(), tableAlias, ic.Name)), null, null, null, AvoidExpandOnRetrieving));
var result = new ImplementedByExpression(IsLite ? Lite.Extract(FieldType) : FieldType, SplitStrategy, implementations);
if (this.IsLite)
return binder.MakeLite(result, null);
else
return result;
}
static Expression IbIbaEquals(ImplementedByExpression ib, ImplementedByAllExpression iba)
{
var list = ib.Implementations.Values.Select(i => Expression.And(
EqualNullable(iba.Id, i.ExternalId),
EqualNullable(iba.TypeId.TypeColumn, QueryBinder.TypeConstant(i.Type)))).ToList();
return list.AggregateOr();
}
protected internal override Expression VisitImplementedBy(ImplementedByExpression rb)
{
return(rb.Implementations.Select(ee => new When(Visit(ee.Value.ExternalId).NotEqualsNulll(), Visit(ee.Value))).ToCondition(rb.Type));
}
protected virtual Expression VisitImplementedBy(ImplementedByExpression ib)
{
var implementations = ib.Implementations.NewIfChange(v => (EntityExpression)Visit(v));
if (implementations != ib.Implementations)
return new ImplementedByExpression(ib.Type, ib.Strategy, implementations);
return ib;
}
static Expression IbIbaEquals(ImplementedByExpression ib, ImplementedByAllExpression iba)
{
var list = ib.Implementations.Values.Select(i =>
Expression.And(
i.ExternalId.Value == NewId ? (Expression)False : EqualNullable(iba.Id, new SqlCastExpression(typeof(string), i.ExternalId.Value)),
EqualNullable(iba.TypeId.TypeColumn.Value, QueryBinder.TypeConstant(i.Type)))).ToList();
return list.AggregateOr();
}
static Expression IbIbEquals(ImplementedByExpression ib, ImplementedByExpression ib2)
{
var list = ib.Implementations.JoinDictionary(ib2.Implementations, (t, i, j) => EqualNullable(i.ExternalId.Value, j.ExternalId.Value)).Values.ToList();
return list.AggregateOr();
}
static Expression FieIbEquals(EntityExpression ee, ImplementedByExpression ib)
{
var imp = ib.Implementations.TryGetC(ee.Type);
if (imp == null)
return False;
return EqualNullable(imp.ExternalId.Value, ee.ExternalId.Value);
}