public ExpressionEntityValueAccessor(IEntityMetadata entity)
{
_entity = entity;
var param = Expression.Parameter(typeof(object), "p");
var isOfTypeExpression = Expression.Lambda <Func <object, bool> >(
Expression.TypeIs(param, entity.ClrType),
param);
_isOfTypeDelegate = isOfTypeExpression.Compile();
_primaryKeys = entity.GetProperties().Where(p => p.IsPrimaryKey).ToList();
if (_primaryKeys.Count == 1)
{
_keyType = _primaryKeys[0].PropertyType;
}
else if (_primaryKeys.Count > 1)
{
var keyTypes = _primaryKeys.Select(p => p.PropertyType).ToArray();
_keyType = EntityKey.Get(keyTypes);
_createEntityKeyDelegate = GetCreateEntityKeyDelegate(_keyType);
}
if (_primaryKeys.Count > 0)
{
this._keyEqualsDelegate = GetKeyEqualsDelegate(_entity.ClrType, _primaryKeys);
}
}
public EntityMetadataBuilder Entity(Type clrType)
{
return(Entity(EntityKey.Get(clrType)));
}
public EntityMetadataBuilder <TEntity> Entity <TEntity>()
where TEntity : class
{
return(new EntityMetadataBuilder <TEntity>(Entity(EntityKey.Get <TEntity>())));
}