public IQueryable <TEntity> GetSiblings(TPrimaryKey id, string orderBySilbing = null)
{
TEntity theEntity = Get(id);
return(Table.Where(EfCoreRepositoryHelper.BuildEqualsPredicate <TEntity>(nameof(ITreeEntity.Pid), theEntity.Pid)));//t => t.Pid == theEntity.Pid);
// 构造表达式；
}
public IQueryable <TEntity> GetChildren(TPrimaryKey id, bool recursion = false, Expression <Func <TEntity, bool> > where = null, string orderBySilbing = null)
{
if (recursion)
{
var entityType = Context.Model.FindEntityType(typeof(TEntity).FullName);
return(EfCoreRepositoryHelper.TreeQuery <TEntity, TPrimaryKey>(_repositoryHelper.ProviderName, Table, entityType, ts => ts.Id.Equals(id), where, false, orderBySilbing));
}
IQueryable <TEntity> result = Table;
if (where != null)
{
result = result.Where(where);
}
return(result.Where(EfCoreRepositoryHelper.BuildEqualsPredicate <TEntity>(nameof(ITreeEntity.Pid), id)));
}
