File: ReadTests_Join.cs

package info (click to toggle)
mono 4.6.2.7+dfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 778,148 kB
  • ctags: 914,052
  • sloc: cs: 5,779,509; xml: 2,773,713; ansic: 432,645; sh: 14,749; makefile: 12,361; perl: 2,488; python: 1,434; cpp: 849; asm: 531; sql: 95; sed: 16; php: 1
file content (336 lines) | stat: -rw-r--r-- 10,727 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
#region MIT license
// 
// MIT license
//
// Copyright (c) 2007-2008 Jiri Moudry, Pascal Craponne
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// 
#endregion
using System;
using System.Globalization;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Linq.Expressions;
using NUnit.Framework;
using Test_NUnit;

using nwind;

#if MONO_STRICT
using System.Data.Linq;
#else
using DbLinq.Data.Linq;
#endif

// test ns 
#if MYSQL
    namespace Test_NUnit_MySql
#elif ORACLE && ODP
    namespace Test_NUnit_OracleODP
#elif ORACLE
    namespace Test_NUnit_Oracle
#elif POSTGRES
    namespace Test_NUnit_PostgreSql
#elif SQLITE
    namespace Test_NUnit_Sqlite
#elif INGRES
    namespace Test_NUnit_Ingres
#elif MSSQL && L2SQL
    namespace Test_NUnit_MsSql_Strict
#elif MSSQL
    namespace Test_NUnit_MsSql
#elif FIREBIRD
    namespace Test_NUnit_Firebird
#endif
{
    [TestFixture]
    public class ReadTests_Join : TestBase
    {

#if !DEBUG && (SQLITE || (MSSQL && !L2SQL))
        [Explicit]
#endif
        [Test(Description = "example by Frans Brouma: select all customers that have no orders")]
        public void LeftJoin_DefaultIfEmpty()
        {
            //example by Frans Brouma on Matt Warren's site
            //select all customers that have no orders
            //http://blogs.msdn.com/mattwar/archive/2007/09/04/linq-building-an-iqueryable-provider-part-vii.aspx
            //http://weblogs.asp.net/fbouma/archive/2007/11/23/developing-linq-to-llblgen-pro-part-9.aspx

            Northwind db = CreateDB();

            var q = from c in db.Customers
                    join o in db.Orders on c.CustomerID equals o.CustomerID into oc
                    from x in oc.DefaultIfEmpty()
                    where x.OrderID == null
                    select c;

            var list = q.ToList();
            Assert.IsTrue(list.Count > 0);
            int countPARIS = list.Count(item => item.CustomerID == "PARIS");
            Assert.IsTrue(countPARIS == 1);
        }

        [Test]
        public void LeftOuterJoin_Suppliers()
        {
            //http://blogs.class-a.nl/blogs/anko/archive/2008/03/14/linq-to-sql-outer-joins.aspx
            //example by Anko Duizer (NL)
            Northwind db = CreateDB();
            var query = from s in db.Suppliers
                        join c in db.Customers on s.City equals c.City into temp
                        from t in temp.DefaultIfEmpty()
                        select new
                        {
                            SupplierName = s.CompanyName,
                            CustomerName = t.CompanyName,
                            City = s.City
                        };

            var list = query.ToList();

            bool foundMelb = false, foundNull = false;
            foreach (var item in list)
            {
                foundMelb = foundMelb || item.City == "Melbourne";
                foundNull = foundNull || item.City == null;
            }
            Assert.IsTrue(foundMelb, "Expected rows with City=Melbourne");
            Assert.IsFalse(foundNull, "Expected no rows with City=null");
        }

        // picrap: commented out, it doesn't build because of db.Orderdetails (again, a shared source file...)

        [Test(Description = "Problem discovered by Laurent")]
        public void Join_Laurent()
        {
            Northwind db = CreateDB();

            var q1 = (from p in db.Products
                      join o in db.OrderDetails on p.ProductID equals o.ProductID
                      where p.ProductID > 1
                      select new
                      {
                          p.ProductName,
                          o.OrderID,
                          o.ProductID,
                      }
                      ).ToList();

            Assert.IsTrue(q1.Count > 0);
        }

#if !DEBUG && (SQLITE || POSTGRES || MSSQL)
        // L2SQL: System.InvalidOperationException : The type 'Test_NUnit_MsSql_Strict.ReadTests_Join+Northwind1+ExtendedOrder' is not mapped as a Table.
        [Explicit]
#endif
        [Test]
        public void RetrieveParentAssociationProperty()
        {
            Northwind dbo = CreateDB();
            Northwind1 db = new Northwind1(dbo.Connection);
            var t = db.GetTable<Northwind1.ExtendedOrder>();
            var q = from order in t
                    select new
                    {
                        order.OrderID,
                        order.CustomerShipCity.ContactName
                    };
            var list = q.ToList();
            Assert.IsTrue(list.Count > 0);
        }



#if !DEBUG && (SQLITE || POSTGRES || MSSQL)
        // L2SQL: System.InvalidOperationException : The type 'Test_NUnit_MsSql_Strict.ReadTests_Join+Northwind1+ExtendedOrder' is not mapped as a Table.
        [Explicit]
#endif
        [Test]
        public void DifferentParentAndAssociationPropertyNames()
        {
            Northwind dbo = CreateDB();
            Northwind1 db = new Northwind1(dbo.Connection);
            var query = db.GetTable<Northwind1.ExtendedOrder>() as IQueryable<Northwind1.ExtendedOrder>;

            var q2 = query.Select(e => new Northwind1.ExtendedOrder
            {
                OrderID = e.OrderID,
                ShipAddress = e.CustomerShipCity.ContactName
            });
            var list = q2.ToList();
            Assert.IsTrue(list.Count > 0);
        }

#if !DEBUG && (SQLITE || POSTGRES || MSSQL)
        // L2SQL: System.InvalidOperationException : The type 'Test_NUnit_MsSql_Strict.ReadTests_Join+Northwind1+ExtendedOrder' is not mapped as a Table.
        [Explicit]
#endif
        [Test]
        public void SelectCustomerContactNameFromOrder()
        {
            Northwind dbo = CreateDB();
            Northwind1 db = new Northwind1(dbo.Connection);
            var t = db.GetTable<Northwind1.ExtendedOrder>();

            var q = from order in t
                    select new
                    {
                        order.CustomerContactName
                    };
            var list = q.ToList();
            Assert.AreEqual(db.Orders.Count(), list.Count());
            foreach (var s in list)
                Assert.AreEqual("Test", s);
        }

        public class Northwind1 : Northwind
        {
            public Northwind1(System.Data.IDbConnection connection)
                : base(connection) { }

            // Linq-SQL requires this: [System.Data.Linq.Mapping.Table(Name = "orders")]
            public class ExtendedOrder : Order
            {
#if MONO_STRICT
                System.Data.Linq
#else
                DbLinq.Data.Linq
#endif
.EntityRef<Customer> _x_Customer;

                [System.Data.Linq.Mapping.Association(Storage = "_x_Customer",
                    ThisKey = "ShipCity", Name =
#if MYSQL
 "orders_ibfk_1"
#elif ORACLE
 "SYS_C004742"
#elif POSTGRES
 "fk_order_customer"
#elif SQLITE
 "fk_Orders_1"
#elif INGRES
 "fk_order_customer"
#elif MSSQL
 "fk_order_customer"
#elif FIREBIRD
 "??" // TODO: correct FK name
#else
#error unknown target
#endif
)]
                public Customer CustomerShipCity
                {
                    get { return _x_Customer.Entity; }
                    set { _x_Customer.Entity = value; }
                }

                public string CustomerContactName
                {
                    get
                    {
                        return "Test";
                    }
                }
            }

            public Table<ExtendedOrder> ExtendedOrders
            {
                get { return base.GetTable<ExtendedOrder>(); }
            }
        }

        [Test]
        [ExpectedException(typeof(NotSupportedException))]
        public void WhereBeforeSelect()
        {
            Northwind db = CreateDB();
            var t = db.GetTable<Order>();

            var query = t.Where(o => o.OrderID != 0);

            query = query.Select(dok => new Order
            {
                OrderID = dok.OrderID,
                OrderDate = dok.OrderDate,
                ShipCity = dok.Customer.ContactName,
                Freight = dok.Freight
            });
            var list = query.ToList();
        }

        /// <summary>
        /// Reported by  pwy.mail in http://code.google.com/p/dblinq2007/issues/detail?id=66
        /// </summary>
        [Test]
        public void OrdersLazyLoad()
        {
            Northwind db = CreateDB();

            var q =
              from c in db.Customers
              select c;

            foreach (var c in q)
            {
                Console.WriteLine(c.Address);
                foreach (var o in c.Orders)
                    Console.WriteLine(o.OrderID);
            }

        }

        [Test]
        public void JoinWhere()
        {
            Northwind db = CreateDB();

            var custID = "BT___";

            var custOderInfos = from o in db.Orders
                                join em in db.Employees on o.EmployeeID equals em.EmployeeID
                                where o.CustomerID == custID
                                select new { o, em };

            var l = custOderInfos.ToList();
        }

#if !DEBUG && (SQLITE || POSTGRES || (MSSQL && !L2SQL))
        [Explicit]
#endif
        [Test]
        // submitted by bryan costanich
        public void ImplicitLeftOuterJoin()
        {
            var db = CreateDB();

            var dbItems =
                    (from a in db.Products
                     from b in db.Suppliers
                     where a.SupplierID == b.SupplierID
                     select a);

            var list = dbItems.ToList();
        }
    }

}