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using System; | ||
using System.Collections.Generic; | ||
using System.Linq; | ||
using Raven.Client.Indexes; | ||
using Raven.Client.Linq; | ||
using Xunit; | ||
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namespace Raven.Tests.MailingList | ||
{ | ||
public class SkippedResults : RavenTest | ||
{ | ||
public void Can_page_when_using_nested_property_index() | ||
{ | ||
using (var store = NewDocumentStore()) | ||
{ | ||
using (var session = store.OpenSession()) | ||
{ | ||
for (int i = 1; i < 11; i++) | ||
{ | ||
session.Store(CreateProvider(i)); | ||
} | ||
session.SaveChanges(); | ||
} | ||
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new NestedPropertyIndex1().Execute(store); | ||
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// Retrieves all 10 providers in a single result set. | ||
using (var session = store.OpenSession()) | ||
{ | ||
var result = (from p in session.Query<Provider, NestedPropertyIndex1>() | ||
.Customize(x=>x.WaitForNonStaleResults()) | ||
where p.Zip == "97520" | ||
select p).ToArray(); | ||
Assert.Equal(10, result.Count()); | ||
} | ||
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// Retrieves all 10 providers, 2 at a time. | ||
using (var session = store.OpenSession()) | ||
{ | ||
const int pageSize = 2; | ||
int pageNumber = 0; | ||
int skippedResults = 0; | ||
int recordsToSkip = 0; | ||
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var providers = new List<Provider>(); | ||
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RavenQueryStatistics statistics; | ||
while (true) | ||
{ | ||
var result = (from p in session.Query<Provider, NestedPropertyIndex1>() | ||
.Customize(x => x.WaitForNonStaleResults()) | ||
.Statistics(out statistics) | ||
where p.Zip == "97520" | ||
select p) | ||
.Take(pageSize) | ||
.Skip(recordsToSkip) | ||
.ToList(); | ||
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providers.AddRange(result); | ||
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if (result.Count < pageSize) | ||
break; | ||
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pageNumber++; | ||
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skippedResults += statistics.SkippedResults; | ||
recordsToSkip = pageSize*pageNumber + skippedResults; | ||
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// I found this in the Raven.Tests.MailingList.Vlad.WillOnlyGetPost2Once() method | ||
//recordsToSkip = pageSize * pageNumber + statistics.SkippedResults; | ||
} | ||
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Assert.Equal(10, providers.Count); | ||
Assert.Equal(5, pageNumber); | ||
} | ||
} | ||
} | ||
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private Provider CreateProvider(int i) | ||
{ | ||
return new Provider | ||
{ | ||
Name = "Test " + i, | ||
Zip = "97520", | ||
Categories = new List<Category> | ||
{ | ||
new Category | ||
{ | ||
EffectiveFrom = DateTime.Now, | ||
EffectiveThrough = DateTime.Now, | ||
Name = "a" | ||
}, | ||
new Category | ||
{ | ||
EffectiveFrom = DateTime.Now, | ||
EffectiveThrough = DateTime.Now, | ||
Name = "a" | ||
}, | ||
new Category | ||
{ | ||
EffectiveFrom = DateTime.Now, | ||
EffectiveThrough = DateTime.Now, | ||
Name = "a" | ||
}, | ||
} | ||
}; | ||
} | ||
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public class Category | ||
{ | ||
public string Name { get; set; } | ||
public DateTime EffectiveFrom { get; set; } | ||
public DateTime EffectiveThrough { get; set; } | ||
} | ||
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public class Provider | ||
{ | ||
public string Name { get; set; } | ||
public string Zip { get; set; } | ||
public IList<Category> Categories { get; set; } | ||
} | ||
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// Indexing nested properties | ||
// Creates multiple index entries, one for each nested property combination | ||
public class NestedPropertyIndex1 : AbstractIndexCreationTask<Provider> | ||
{ | ||
public NestedPropertyIndex1() | ||
{ | ||
Map = providers => | ||
from p in providers | ||
from c in p.Categories | ||
select new | ||
{ | ||
p.Name, | ||
p.Zip, | ||
Categories_Name = c.Name, | ||
Categories_EffectiveFrom = c.EffectiveFrom, | ||
Categories_EffectiveThrough = c.EffectiveThrough, | ||
}; | ||
} | ||
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} | ||
} | ||
} |
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