GridGain.NET LINQ Provider

ICache<EmployeeKey, Employee> employeeCache = ignite.GetCache<EmployeeKey, Employee>(CacheName);

IQueryable<ICacheEntry<EmployeeKey, Employee>> queryable = cache.AsCacheQueryable();

Employee[] interns = queryable.Where(emp => emp.Value.IsIntern).ToArray();

// Create query
var query = ignite.GetCache<EmployeeKey, Employee>(CacheName).AsCacheQueryable().Where(emp => emp.Value.IsIntern);

// Cast to ICacheQueryable
var cacheQueryable = (ICacheQueryable) query;

// Get resulting fields query
SqlFieldsQuery fieldsQuery = cacheQueryable.GetFieldsQuery();

// Examine generated SQL
Console.WriteLine(fieldsQuery.Sql);

// Output: select _T0._key, _T0._val from "persons".Person as _T0 where _T0.IsIntern

var query = ignite.GetCache<EmployeeKey, Employee>(CacheName).AsCacheQueryable().Where(emp => emp.Value.IsIntern);

IQueryable<EmployeeKey> keys = query.Select(emp => emp.Key);

IQueryable<Employee> values = query.Select(emp => emp.Value);

IQueryable<string> names = values.Select(emp => emp.Name);

var custom = query.Select(emp => new {Id = emp.Key, Name = emp.Value.Name, Age = emp.Value.Age});

var queryable = ignite.GetCache<EmployeeKey, Employee>(CacheName).AsCacheQueryable();

// Regular query
var persons = queryable.Where(emp => emp.Value.Age > 21);
var result = persons.ToArray();

// Corresponding compiled query
var compiledQuery = CompiledQuery.Compile((int age) => queryable.Where(emp => emp.Value.Age > age));
IQueryCursor<ICacheEntry<EmployeeKey, Employee>> cursor = compiledQuery(21);
result = cursor.ToArray();

var persons = ignite.GetCache<int, Person>("personCache").AsCacheQueryable();
var orgs = ignite.GetCache<int, Organization>("orgCache").AsCacheQueryable();

// SQL join on Person and Organization to find persons working for Apache
var qry = from person in persons from org in orgs
          where person.Value.OrgId == org.Value.Id
          && org.Value.Name == "Apache"
          select person

foreach (var cacheEntry in qry)
    Console.WriteLine(cacheEntry.Value);

// Same query with method syntax
qry = persons.Join(orgs, person => person.Value.OrgId, org => org.Value.Id,
(person, org) => new {person, org}).Where(p => p.org.Name == "Apache").Select(p => p.person);

var persons = ignite.GetCache<int, Person>("personCache").AsCacheQueryable();
var ids = new int[] {1, 20, 56};

var personsByIds = persons.Where(p => ids.Contains(p.Value.Id));

var persons = ignite.GetCache<int, Person>("personCache").AsCacheQueryable();
var ids = new int[] {1, 20, 56};

var personsByIds = persons.Join(ids,
                                person => person.Value.Id,
                                id => id,
                                (person, id) => person);