Search From database and sort using Entity Framework

Question

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In my project i have a text-box which is used for search now suppose if someone is searching hot pizza then i have to show them all result containing whether how or pizza but i have to order them so than result containing how pizza comes first then shows result of hot and then pizza

so i am getting query from view
then keep them in List

C#

List<string> queryList = query.ToLower().Split(new char[] { '-' }, StringSplitOptions.RemoveEmptyEntries).Where(q => q.Length > 3).ToList();

now if i can not use Contains for search like this

C#

var matchedProjects = (from project in unitOfWork.ProjectRepository
                                      .Find(p => p.IsActive && p is Project && new[] { p.Name, p.ProjectAddress.City.Name, p.ProjectAddress.Address1 }
                                       .Contains(queryList))

Currently I am doing this

C#

List<string> queryList = query.ToLower().Split(new char[] { '-' }, StringSplitOptions.RemoveEmptyEntries).Where(q => q.Length > 3).ToList();

                foreach (var q in queryList)
                {
                    var matchedProjects = (from project in unitOfWork.ProjectRepository
                                          .Find(p => p.IsActive && p is Project && new[] { p.Name, p.ProjectAddress.City.Name, p.ProjectAddress.Address1 }
                                           .Any(prjt=>prjt.Contains(q)))
                                           select project as Project).AsParallel().ToList();
                    allSearchedProject.AddRange(matchedProjects);
                }

                return allSearchedProject;

but problem is this it hits database for every word how to do get similar result in one hit
so can someone tell me how to search and sort them
-Thanks

Posted 7-Sep-14 23:22pm

Vishal Pand3y

Updated 8-Sep-14 4:31am

v2

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Comments

Nathan Minier 8-Sep-14 10:37am

Why are you mixing fluent and query syntax?

Vishal Pand3y 8-Sep-14 10:45am

is there any other option ?

Nathan Minier 8-Sep-14 11:07am

Sure, one or the other. I like fluent personally, but that's because I come from OOP and not DBA.

Also, don't query Any() when you're trying to get results, just make it part of your selector.

This is assuming that you already have a Project object defined with those fields

allSearchedProject = new List<Project>();

foreach (var q in queryList)
{
allSearchedProject.AddRange(unitOfWork.ProjectRepository
.Where(p => p.IsActive && p is Project && p.Contains(q))
.AsParallel()
.OrderBy(o => o.Name)
.ToList())
}

Assuming that unitOfWork.ProjectRepository { get; } is setup to return either IQueryable<Project> or IEnumerable<Project>.

SRS(The Coder) 9-Sep-14 0:51am

Yes, this seems a good answer to your question.

TryAndSucceed 8-Sep-14 12:08pm

What is the key field against which you are trying to filter? Name? or Address?

Vishal Pand3y 9-Sep-14 4:16am

@Nathan Minier this will also hit database for each word in queryList

Nathan Minier 9-Sep-14 8:18am

Yes it will. Without knowing what your unitOfWork does it's difficult to give a good, generic solution.

Ideally you have an IQueryable passthrough on your UoW, in which case it will not if you remove the .ToList() from the loop and move it outside. But I don't know that for certain, as I haven't seen that code.

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