Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.tracy.immutable.service.crud.Impl; import com.tracy.immutable.model.school.Textbook; import com.tracy.immutable.service.crud.TextBookCrudService; import java.util.List; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; /** * * @author student */ public class TextBookCrudServiceImpl implements TextBookCrudService { @Override @Transactional(propagation = Propagation.SUPPORTS) public Textbook find(String s) { return null; } @Override @Transactional(propagation = Propagation.MANDATORY) public Textbook persist(Textbook entity) { return null; } @Override @Transactional(propagation = Propagation.REQUIRES_NEW) public Textbook merge(Textbook entity) { return null; } @Override @Transactional(propagation = Propagation.REQUIRED) public Textbook remove(Textbook entity) { return null; } @Override @Transactional(propagation = Propagation.NOT_SUPPORTED) public List<Textbook> findAll() { return null; } }