Test/Doc added
Test/Doc added
This commit is contained in:
Amit Dixit
@@ -1,5 +1,6 @@
|
||||
/**
|
||||
* The MIT License Copyright (c) 2014 Ilkka Seppälä
|
||||
* The MIT License Copyright (c) 2016 Amit Dixit
|
||||
*
|
||||
*
|
||||
* 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,
|
||||
@@ -18,82 +19,17 @@
|
||||
*/
|
||||
package com.iluwatar.datamapper;
|
||||
|
||||
import java.util.Optional;
|
||||
import java.util.UUID;
|
||||
|
||||
import org.apache.log4j.Logger;
|
||||
import com.iluwatar.datamapper.App;
|
||||
import org.junit.Test;
|
||||
|
||||
/**
|
||||
* The Data Mapper (DM) is a layer of software that separates the in-memory objects from the
|
||||
* database. Its responsibility is to transfer data between the two and also to isolate them from
|
||||
* each other. With Data Mapper the in-memory objects needn't know even that there's a database
|
||||
* present; they need no SQL interface code, and certainly no knowledge of the database schema. (The
|
||||
* database schema is always ignorant of the objects that use it.) Since it's a form of Mapper ,
|
||||
* Data Mapper itself is even unknown to the domain layer.
|
||||
* <p>
|
||||
* The below example demonstrates basic CRUD operations: select, add, update, and delete.
|
||||
*
|
||||
* Tests that Data-Mapper example runs without errors.
|
||||
*/
|
||||
public final class App {
|
||||
public final class AppTest {
|
||||
|
||||
private static Logger log = Logger.getLogger(App.class);
|
||||
|
||||
|
||||
private static final String DB_TYPE_ORACLE = "Oracle";
|
||||
private static final String DB_TYPE_MYSQL = "MySQL";
|
||||
|
||||
|
||||
/**
|
||||
* Program entry point.
|
||||
*
|
||||
* @param args command line args.
|
||||
*/
|
||||
public static final void main(final String... args) {
|
||||
|
||||
if (log.isInfoEnabled() & args.length > 0) {
|
||||
log.debug("App.main(), db type: " + args[0]);
|
||||
}
|
||||
|
||||
StudentDataMapper mapper = null;
|
||||
|
||||
/* Check the desired db type from runtime arguments */
|
||||
if (DB_TYPE_ORACLE.equalsIgnoreCase(args[0])) {
|
||||
|
||||
/* Create new data mapper for mysql */
|
||||
mapper = new StudentMySQLDataMapper();
|
||||
|
||||
} else if (DB_TYPE_MYSQL.equalsIgnoreCase(args[0])) {
|
||||
|
||||
/* Create new data mapper for oracle */
|
||||
mapper = new StudentMySQLDataMapper();
|
||||
} else {
|
||||
|
||||
/* Don't couple any Data Mapper to java.sql.SQLException */
|
||||
throw new DataMapperException("Following data source(" + args[0] + ") is not supported");
|
||||
}
|
||||
|
||||
/* Create new student */
|
||||
Student student = new Student(UUID.randomUUID(), 1, "Adam", 'A');
|
||||
|
||||
/* Add student in respectibe db */
|
||||
mapper.insert(student);
|
||||
|
||||
/* Find this student */
|
||||
final Optional<Student> studentToBeFound = mapper.find(student.getGuId());
|
||||
|
||||
if (log.isDebugEnabled()) {
|
||||
log.debug("App.main(), db find returned : " + studentToBeFound);
|
||||
}
|
||||
|
||||
/* Update existing student object */
|
||||
student = new Student(student.getGuId(), 1, "AdamUpdated", 'A');
|
||||
|
||||
/* Update student in respectibe db */
|
||||
mapper.update(student);
|
||||
|
||||
/* Delete student in db */
|
||||
mapper.delete(student);
|
||||
@Test
|
||||
public void test() {
|
||||
final String[] args = {};
|
||||
App.main(args);
|
||||
}
|
||||
|
||||
private App() {}
|
||||
}
|
||||
|
||||
@@ -0,0 +1,108 @@
|
||||
/**
|
||||
* The MIT License Copyright (c) 2016 Amit Dixit
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
package com.iluwatar.datamapper;
|
||||
|
||||
import static org.junit.Assert.assertEquals;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
import com.iluwatar.datamapper.Student;
|
||||
import com.iluwatar.datamapper.StudentDataMapper;
|
||||
import com.iluwatar.datamapper.StudentFirstDataMapper;
|
||||
import com.iluwatar.datamapper.StudentSecondDataMapper;
|
||||
|
||||
/**
|
||||
* The Data Mapper (DM) is a layer of software that separates the in-memory objects from the
|
||||
* database. Its responsibility is to transfer data between the two and also to isolate them from
|
||||
* each other. With Data Mapper the in-memory objects needn't know even that there's a database
|
||||
* present; they need no SQL interface code, and certainly no knowledge of the database schema. (The
|
||||
* database schema is always ignorant of the objects that use it.) Since it's a form of Mapper ,
|
||||
* Data Mapper itself is even unknown to the domain layer.
|
||||
* <p>
|
||||
*/
|
||||
public class DataMapperTest {
|
||||
|
||||
/**
|
||||
* This test verify that first data mapper is able to perform all CRUD operations on Student
|
||||
*/
|
||||
@Test
|
||||
public void testFirstDataMapper() {
|
||||
|
||||
/* Create new data mapper of first type */
|
||||
final StudentDataMapper mapper = new StudentFirstDataMapper();
|
||||
|
||||
/* Create new student */
|
||||
Student student = new Student(1, "Adam", 'A');
|
||||
|
||||
/* Add student in respectibe db */
|
||||
mapper.insert(student);
|
||||
|
||||
/* Check if student is added in db */
|
||||
assertEquals(student.getStudentId(), mapper.find(student.getStudentId()).get().getStudentId());
|
||||
|
||||
/* Update existing student object */
|
||||
student = new Student(student.getStudentId(), "AdamUpdated", 'A');
|
||||
|
||||
/* Update student in respectibe db */
|
||||
mapper.update(student);
|
||||
|
||||
/* Check if student is updated in db */
|
||||
assertEquals(mapper.find(student.getStudentId()).get().getName(), "AdamUpdated");
|
||||
|
||||
/* Delete student in db */
|
||||
mapper.delete(student);
|
||||
|
||||
/* Result should be false */
|
||||
assertEquals(false, mapper.find(student.getStudentId()).isPresent());
|
||||
}
|
||||
|
||||
/**
|
||||
* This test verify that second data mapper is able to perform all CRUD operations on Student
|
||||
*/
|
||||
@Test
|
||||
public void testSecondDataMapper() {
|
||||
|
||||
/* Create new data mapper of second type */
|
||||
final StudentDataMapper mapper = new StudentSecondDataMapper();
|
||||
|
||||
/* Create new student */
|
||||
Student student = new Student(1, "Adam", 'A');
|
||||
|
||||
/* Add student in respectibe db */
|
||||
mapper.insert(student);
|
||||
|
||||
/* Check if student is added in db */
|
||||
assertEquals(student.getStudentId(), mapper.find(student.getStudentId()).get().getStudentId());
|
||||
|
||||
/* Update existing student object */
|
||||
student = new Student(student.getStudentId(), "AdamUpdated", 'A');
|
||||
|
||||
/* Update student in respectibe db */
|
||||
mapper.update(student);
|
||||
|
||||
/* Check if student is updated in db */
|
||||
assertEquals(mapper.find(student.getStudentId()).get().getName(), "AdamUpdated");
|
||||
|
||||
/* Delete student in db */
|
||||
mapper.delete(student);
|
||||
|
||||
/* Result should be false */
|
||||
assertEquals(false, mapper.find(student.getStudentId()).isPresent());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user