private bool TryBindProperty(Expression source, MemberIdentity member, out SqlExpression expression)
{
if (source is EntityShaperExpression entityShaperExpression)
{
var projectionBindingExpression = (ProjectionBindingExpression)entityShaperExpression.ValueBufferExpression;
var selectExpression = ((SelectExpression)projectionBindingExpression.QueryExpression);
var entityType = entityShaperExpression.EntityType;
var property = member.MemberInfo != null
? entityType.FindProperty(member.MemberInfo)
: entityType.FindProperty(member.Name);
if (property != null)
{
expression = selectExpression.BindProperty(property, projectionBindingExpression);
return(true);
}
var navigation = member.MemberInfo != null
? entityType.FindNavigation(member.MemberInfo)
: entityType.FindNavigation(member.Name);
expression = selectExpression.BindNavigation(navigation, projectionBindingExpression);
return(true);
}
else if (source is ObjectAccessExpression objectAccessExpression)
{
var entityType = objectAccessExpression.Navigation.GetTargetType();
var property = member.MemberInfo != null
? entityType.FindProperty(member.MemberInfo)
: entityType.FindProperty(member.Name);
if (property != null)
{
expression = new KeyAccessExpression(property, objectAccessExpression);
return(true);
}
var navigation = member.MemberInfo != null
? entityType.FindNavigation(member.MemberInfo)
: entityType.FindNavigation(member.Name);
expression = new ObjectAccessExpression(navigation, objectAccessExpression);
return(true);
}
expression = null;
return(false);
}
public KeyAccessExpression GetProperty(IProperty property)
{
if (!_entityType.GetTypesInHierarchy().Contains(property.DeclaringEntityType))
{
throw new InvalidOperationException(
$"Called EntityProjectionExpression.GetProperty() with incorrect IProperty. EntityType:{_entityType.DisplayName()}, Property:{property.Name}");
}
if (!_propertyExpressionsCache.TryGetValue(property, out var expression))
{
expression = new KeyAccessExpression(property, AccessExpression);
_propertyExpressionsCache[property] = expression;
}
return(expression);
}
private bool TryBindProperty(Expression source, MemberIdentity member, out SqlExpression expression)
{
if (source is EntityProjectionExpression entityProjectionExpression)
{
var entityType = entityProjectionExpression.EntityType;
var property = member.MemberInfo != null
? entityType.FindProperty(member.MemberInfo)
: entityType.FindProperty(member.Name);
if (property != null)
{
expression = entityProjectionExpression.BindProperty(property);
return(true);
}
var navigation = member.MemberInfo != null
? entityType.FindNavigation(member.MemberInfo)
: entityType.FindNavigation(member.Name);
expression = entityProjectionExpression.BindNavigation(navigation);
return(true);
}
else if (source is ObjectAccessExpression objectAccessExpression)
{
var entityType = objectAccessExpression.Navigation.GetTargetType();
var property = member.MemberInfo != null
? entityType.FindProperty(member.MemberInfo)
: entityType.FindProperty(member.Name);
if (property != null)
{
expression = new KeyAccessExpression(property, objectAccessExpression);
return(true);
}
var navigation = member.MemberInfo != null
? entityType.FindNavigation(member.MemberInfo)
: entityType.FindNavigation(member.Name);
expression = new ObjectAccessExpression(navigation, objectAccessExpression);
return(true);
}
expression = null;
return(false);
}
public SqlExpression BindProperty(IProperty property)
{
if (!EntityType.IsAssignableFrom(property.DeclaringEntityType) &&
!property.DeclaringEntityType.IsAssignableFrom(EntityType))
{
throw new InvalidOperationException(
$"Called EntityProjectionExpression.GetProperty() with incorrect IProperty. EntityType:{EntityType.DisplayName()}, Property:{property.Name}");
}
if (!_propertyExpressionsCache.TryGetValue(property, out var expression))
{
expression = new KeyAccessExpression(property, AccessExpression);
_propertyExpressionsCache[property] = expression;
}
return(expression);
}
protected abstract Expression VisitKeyAccess(KeyAccessExpression keyAccessExpression);
protected override Expression VisitKeyAccess(KeyAccessExpression keyAccessExpression)
{
_sqlBuilder.Append(keyAccessExpression);
return(keyAccessExpression);
}
