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/*
* Copyright 2011 James Moger.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.iciql.test;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.iciql.Db;
import com.iciql.Iciql.IQColumn;
import com.iciql.Iciql.IQTable;
/**
* Tests of Joins.
*/
public class JoinTest {
Db db;
@Before
public void setup() {
db = IciqlSuite.openNewDb();
db.insertAll(UserId.getList());
db.insertAll(UserNote.getList());
}
@After
public void tearDown() {
db.close();
}
@Test
public void testPrimitiveJoin() throws Exception {
final UserId u = new UserId();
final UserNote n = new UserNote();
List<UserNote> notes = db.from(u).innerJoin(n).on(u.id).is(n.userId).where(u.id).is(2)
.select(new UserNote() {
{
userId = n.userId;
noteId = n.noteId;
text = n.text;
}
});
assertEquals(3, notes.size());
}
@Test
public void testJoin() throws Exception {
final UserId u = new UserId();
final UserNote n = new UserNote();
// this query returns 1 UserId if the user has a note
// it's purpose is to confirm fluency/type-safety on a very simple
// join case where the main table is filtered/reduced by hits in a
// related table
List<UserId> users = db.from(u).innerJoin(n).on(u.id).is(n.userId).where(u.id).is(2).selectDistinct();
assertEquals(1, users.size());
assertEquals(2, users.get(0).id);
}
@IQTable
public static class UserId {
@IQColumn(primaryKey = true)
public int id;
@IQColumn(length = 10)
public String name;
public UserId() {
// public constructor
}
public UserId(int id, String name) {
this.id = id;
this.name = name;
}
public String toString() {
return name + " (" + id + ")";
}
public static List<UserId> getList() {
UserId[] list = { new UserId(1, "Tom"), new UserId(2, "Dick"), new UserId(3, "Harry") };
return Arrays.asList(list);
}
}
@IQTable
public static class UserNote {
@IQColumn(autoIncrement = true, primaryKey = true)
public int noteId;
@IQColumn
public int userId;
@IQColumn(length = 10)
public String text;
public UserNote() {
// public constructor
}
public UserNote(int userId, String text) {
this.userId = userId;
this.text = text;
}
public String toString() {
return text;
}
public static List<UserNote> getList() {
UserNote[] list = { new UserNote(1, "A"), new UserNote(2, "B"), new UserNote(3, "C"),
new UserNote(1, "D"), new UserNote(2, "E"), new UserNote(3, "F"), new UserNote(1, "G"),
new UserNote(2, "H"), new UserNote(3, "I"), };
return Arrays.asList(list);
}
}
}
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