public static QueryResult Build <T>(IQueryable <T> query, Type entityType, IList <Clause> clauses, IList <Criteria> criterias, string[] unselectableProperties, bool countAllRows) where T : class
{
Clause selectClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.Select);
Clause topClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.Top);
Clause skipClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.Skip);
Clause firstClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.First);
Clause lastClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.Last);
Clause orderByClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.OrderBy);
Clause orderByDescClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.OrderByDesc);
Clause includeClause = clauses.FirstOrDefault(c => c.ClauseType == ClauseType.Include);
List <string> selectColumns = SelectHelper.GetSelectableColumns(selectClause, unselectableProperties, entityType).ToList();
IEnumerable <Column> orderColumns = OrderByHelper.GetOrderByColumns(orderByClause, unselectableProperties, entityType);
IEnumerable <Column> orderDescColumns = OrderByHelper.GetOrderByColumns(orderByDescClause, unselectableProperties, entityType);
if (criterias.Any())
{
query = query.Where(criterias);
}
var totalCount = 0;
if (countAllRows)
{
totalCount = query.Count();
}
if (orderColumns != null)
{
query = query.OrderBy(orderColumns);
}
else if (orderDescColumns != null)
{
query = query.OrderByDesc(orderDescColumns);
}
if (includeClause != null)
{
List <string> includeColumns = IncludeHelper.GetIncludableColumns(includeClause, unselectableProperties, entityType).ToList();
foreach (string column in includeColumns)
{
query = query.Include(column);
}
}
IQueryable <object> queryProjection;
if (selectClause == null && unselectableProperties == null)
{
queryProjection = query;
}
else
{
queryProjection = query.Select(SelectHelper.GetSelector <T>(string.Join(",", selectColumns)));
}
if (skipClause != null)
{
int skip;
int.TryParse(skipClause.Value, out skip);
queryProjection = queryProjection.Skip(skip);
}
if (topClause != null)
{
int take;
int.TryParse(topClause.Value, out take);
queryProjection = queryProjection.Take(take);
}
else if (firstClause != null)
{
return(new QueryResult {
Result = queryProjection.FirstOrDefault(), TotalCount = totalCount
});
}
else if (lastClause != null)
{
return(new QueryResult {
Result = queryProjection.LastOrDefault(), TotalCount = totalCount
});
}
return(new QueryResult {
Result = queryProjection, TotalCount = totalCount
});
}
public static QueryResult Build <T>(IQueryable <T> query, Type entityType, Clauses clauses, IList <Criteria> criterias, AutoQueryableProfile profile, bool countAllRows) where T : class
{
IColumnProvider columnProvider = ProviderFactory.GetColumnProvider(profile?.ProviderType);
IEnumerable <SelectColumn> selectColumns = columnProvider.GetSelectableColumns(clauses, profile, entityType);
IEnumerable <Column> orderColumns = OrderByHelper.GetOrderByColumns(profile, clauses.OrderBy, entityType);
IEnumerable <Column> orderDescColumns = OrderByHelper.GetOrderByColumns(profile, clauses.OrderByDesc, entityType);
if (criterias != null && criterias.Any())
{
query = query.Where(criterias);
}
var totalCount = 0;
if (countAllRows)
{
totalCount = query.Count();
}
if (orderColumns != null)
{
query = query.OrderBy(orderColumns);
}
else if (orderDescColumns != null)
{
query = query.OrderByDesc(orderDescColumns);
}
IQueryable <object> queryProjection;
if (clauses.Select == null && profile?.UnselectableProperties == null && profile?.SelectableProperties == null)
{
queryProjection = query;
}
else
{
if (profile.UseBaseType)
{
queryProjection = query.Select(SelectHelper.GetSelector <T, T>(selectColumns, profile));
}
else
{
queryProjection = query.Select(SelectHelper.GetSelector <T, object>(selectColumns, profile));
}
}
if (clauses.Skip != null)
{
int.TryParse(clauses.Skip.Value, out int skip);
if (profile?.MaxToSkip != null && skip > profile.MaxToSkip)
{
skip = profile.MaxToSkip.Value;
}
queryProjection = queryProjection.Skip(skip);
}
if (clauses.Top != null)
{
int.TryParse(clauses.Top.Value, out int take);
if (profile?.MaxToTake != null && take > profile?.MaxToTake)
{
take = profile.MaxToTake.Value;
}
queryProjection = queryProjection.Take(take);
}
else if (clauses.First != null)
{
return(new QueryResult {
Result = queryProjection.FirstOrDefault(), TotalCount = totalCount
});
}
else if (clauses.Last != null)
{
return(new QueryResult {
Result = queryProjection.LastOrDefault(), TotalCount = totalCount
});
}
else if (profile?.MaxToTake != null)
{
queryProjection = queryProjection.Take(profile.MaxToTake.Value);
}
return(new QueryResult {
Result = queryProjection, TotalCount = totalCount
});
}
