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#352- Unit Of Work : [Refactor] Change module name to unit-of-work.

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This commit is contained in:
Piyush Chaudhari
2017-09-16 21:39:09 +05:30
parent 68ed2a4726
commit 5fe9d2be6c
8 changed files with 2 additions and 2 deletions
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43
unit-of-work/src/main/java/com/iluwatar/unitofwork/IUnitOfWork.java Normal file
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/*
* The MIT License (MIT)
*
* Copyright (c) 2017 Piyush Chaudhari
*
* 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.unitofwork;
/**
* @param <T> Any generic entity
*/
public interface IUnitOfWork<T> {
String INSERT = "INSERT";
String DELETE = "DELETE";
String MODIFY = "MODIFY";
void registerNew(T entity);
void registerModified(T entity);
void registerDeleted(T entity);
void commit();
}

46
unit-of-work/src/main/java/com/iluwatar/unitofwork/Student.java Normal file
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/*
* The MIT License (MIT)
*
* Copyright (c) 2017 Piyush Chaudhari
*
* 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.unitofwork;
/**
* {@link Student} is an entity.
*/
public class Student {
private Integer id;
private String name;
private String address;
/**
* @param id student unique id
* @param name name of student
* @param address address of student
*/
public Student(Integer id, String name, String address) {
this.id = id;
this.name = name;
this.address = address;
}
}

43
unit-of-work/src/main/java/com/iluwatar/unitofwork/StudentDatabase.java Normal file
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/*
* The MIT License (MIT)
*
* Copyright (c) 2017 Piyush Chaudhari
*
* 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.unitofwork;
/**
* Act as Database for student records.
*/
public class StudentDatabase {
public void insert(Student student) {
//Some insert logic to DB
}
public void modify(Student student) {
//Some modify logic to DB
}
public void delete(Student student) {
//Some delete logic to DB
}
}

110
unit-of-work/src/main/java/com/iluwatar/unitofwork/StudentRepository.java Normal file
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/*
* The MIT License (MIT)
*
* Copyright (c) 2017 Piyush Chaudhari
*
* 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.unitofwork;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* {@link StudentRepository} Student database repository.
* supports unit of work for student data.
*/
public class StudentRepository implements IUnitOfWork<Student> {
private Map<String, List<Student>> context;
private StudentDatabase studentDatabase;
/**
* @param context set of operations to be perform during commit.
* @param studentDatabase Database for student records.
*/
public StudentRepository(Map<String, List<Student>> context, StudentDatabase studentDatabase) {
this.context = context;
this.studentDatabase = studentDatabase;
}
@Override
public void registerNew(Student student) {
register(student, IUnitOfWork.INSERT);
}
@Override
public void registerModified(Student student) {
register(student, IUnitOfWork.MODIFY);
}
@Override
public void registerDeleted(Student student) {
register(student, IUnitOfWork.DELETE);
}
private void register(Student student, String operation) {
List<Student> studentsToOperate = context.get(operation);
if (studentsToOperate == null) {
studentsToOperate = new ArrayList<>();
}
studentsToOperate.add(student);
context.put(operation, studentsToOperate);
}
@Override
public void commit() {
if (context == null || context.size() == 0) {
return;
}
if (context.containsKey(IUnitOfWork.INSERT)) {
commitInsert();
}
if (context.containsKey(IUnitOfWork.MODIFY)) {
commitModify();
}
if (context.containsKey(IUnitOfWork.DELETE)) {
commitDelete();
}
}
private void commitDelete() {
List<Student> deletedStudents = context.get(IUnitOfWork.DELETE);
for (Student student : deletedStudents) {
studentDatabase.delete(student);
}
}
private void commitModify() {
List<Student> modifiedStudents = context.get(IUnitOfWork.MODIFY);
for (Student student : modifiedStudents) {
studentDatabase.modify(student);
}
}
private void commitInsert() {
List<Student> studentsToBeInserted = context.get(IUnitOfWork.INSERT);
for (Student student : studentsToBeInserted) {
studentDatabase.insert(student);
}
}
}