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VulnApp.java
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VulnApp.java
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/**
* The MIT License
* Copyright (c) 2014-2016 Ilkka Seppälä
*
* 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.repository;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Repository pattern mediates between the domain and data mapping layers using a collection-like
* interface for accessing domain objects. A system with complex domain model often benefits from a
* layer that isolates domain objects from the details of the database access code and in such
* systems it can be worthwhile to build another layer of abstraction over the mapping layer where
* query construction code is concentrated. This becomes more important when there are a large
* number of domain classes or heavy querying. In these cases particularly, adding this layer helps
* minimize duplicate query logic.
* <p>
* In this example we utilize Spring Data to automatically generate a repository for us from the
* {@link Person} domain object. Using the {@link PersonRepository} we perform CRUD operations on
* the entity, moreover, the query by {@link org.springframework.data.jpa.domain.Specification} are
* also performed. Underneath we have configured in-memory H2 database for which schema is created
* and dropped on each run.
*/
public class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Program entry point
*
* @param args
* command line args
*/
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
"applicationContext.xml");
PersonRepository repository = context.getBean(PersonRepository.class);
Person peter = new Person("Peter", "Sagan", 17);
Person nasta = new Person("Nasta", "Kuzminova", 25);
Person john = new Person("John", "lawrence", 35);
Person terry = new Person("Terry", "Law", 36);
// Add new Person records
repository.save(peter);
repository.save(nasta);
repository.save(john);
repository.save(terry);
// Count Person records
LOGGER.info("Count Person records: {}", repository.count());
// Print all records
List<Person> persons = (List<Person>) repository.findAll();
for (Person person : persons) {
LOGGER.info(person.toString());
}
// Update Person
nasta.setName("Barbora");
nasta.setSurname("Spotakova");
repository.save(nasta);
LOGGER.info("Find by id 2: {}", repository.findOne(2L));
// Remove record from Person
repository.delete(2L);
// count records
LOGGER.info("Count Person records: {}", repository.count());
// find by name
Person p = repository.findOne(new PersonSpecifications.NameEqualSpec("John"));
LOGGER.info("Find by John is {}", p);
// find by age
persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
LOGGER.info("Find Person with age between 20,40: ");
for (Person person : persons) {
LOGGER.info(person.toString());
}
repository.deleteAll();
context.close();
}
}