iSharkFly-Docs/java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

uncomment classes in core-java (#1777)

Browse Source 
* uncomment classes in core-java

* Add content to guide to JDO
This commit is contained in:
Jesus Boadas 2017-05-04 06:22:25 -04:00 committed by maibin
parent 5f02c64c95
commit 3e50b39fed
6 changed files with 233 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
core-java/src/test/java/com/baeldung/java8/comparator/Employee.java
View File

@ -1,6 +1,4 @@
package com.baeldung.java8.comparator;
/*
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.EqualsAndHashCode;
@ -22,4 +20,3 @@ public class Employee implements Comparable<Employee>{
}
}
*/

3
core-java/src/test/java/com/baeldung/java8/comparator/Java8ComparatorTest.java
View File

@ -1,5 +1,4 @@
package com.baeldung.java8.comparator;
/*
import java.util.Arrays;
import java.util.Comparator;
@ -164,5 +163,3 @@ public class Java8ComparatorTest {
}
*/

26
libraries/myPersistence.xml Normal file
View File

@ -0,0 +1,26 @@
<?xml version="1.0" encoding="UTF-8"?><root>
</root>

5
libraries/pom.xml
View File

@ -251,6 +251,11 @@
<artifactId>h2</artifactId>
<version>1.4.194</version>
</dependency>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-xml</artifactId>
<version>5.0.0-release</version>
</dependency>
</dependencies>
<properties>

160
libraries/src/main/java/com/baeldung/jdo/GuideToJDO.java
View File

@ -20,22 +20,29 @@ public class GuideToJDO {
private static final Logger LOGGER = Logger.getLogger(GuideToJDO.class.getName());
private Random rnd = new Random();
private PersistenceUnitMetaData pumd;
private PersistenceUnitMetaData pumdXML;
public static void main(String[] args) {
new GuideToJDO();
}
public GuideToJDO() {
CreateProperties();
CreateH2Properties();
CreateXMLProperties();
CreateProducts();
ListProducts();
QueryJDOQL();
QuerySQL();
QueryJPQL();
UpdateProducts();
ListProducts();
DeleteProducts();
ListProducts();
persistXML();
listXMLProducts();
}
public void CreateProperties(){
public void CreateH2Properties(){
pumd = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
pumd.addClassName("com.baeldung.jdo.Product");
@ -48,6 +55,14 @@ public class GuideToJDO {
}
public void CreateXMLProperties(){
pumdXML = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
pumdXML.addClassName("com.baeldung.jdo.ProductXML");
pumdXML.setExcludeUnlistedClasses();
pumdXML.addProperty("javax.jdo.option.ConnectionURL", "xml:file:myPersistence.xml");
pumdXML.addProperty("datanucleus.autoCreateSchema", "true");
}
public void CreateProducts() {
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
@ -140,4 +155,145 @@ public class GuideToJDO {
pm.close();
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public void QueryJDOQL (){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
// Declarative JDOQL :
LOGGER.log(Level.INFO, "Declarative JDOQL --------------------------------------------------------------");
Query qDJDOQL = pm.newQuery(Product.class);
qDJDOQL.setFilter("name == 'Tablet' && price == price_value");
qDJDOQL.declareParameters("double price_value");
List<Product> resultsqDJDOQL = qDJDOQL.setParameters(80.0).executeList();
Iterator<Product> iterDJDOQL = resultsqDJDOQL.iterator();
while (iterDJDOQL.hasNext()) {
Product p = iterDJDOQL.next();
LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
}
LOGGER.log(Level.INFO, "--------------------------------------------------------------");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public void QuerySQL (){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
//SQL :
LOGGER.log(Level.INFO, "SQL --------------------------------------------------------------");
Query query = pm.newQuery("javax.jdo.query.SQL", "SELECT * FROM PRODUCT");
query.setClass(Product.class);
List<Product> results = query.executeList();
Iterator<Product> iter = results.iterator();
while (iter.hasNext()) {
Product p = iter.next();
LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
}
LOGGER.log(Level.INFO, "--------------------------------------------------------------");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public void QueryJPQL (){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
//JPQL :
LOGGER.log(Level.INFO, "JPQL --------------------------------------------------------------");
Query q = pm.newQuery("JPQL", "SELECT p FROM "+Product.class.getName()+" p WHERE p.name = 'Laptop'");
List results = (List)q.execute();
Iterator<Product> iter = results.iterator();
while (iter.hasNext()) {
Product p = iter.next();
LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
}
LOGGER.log(Level.INFO, "--------------------------------------------------------------");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
public void persistXML(){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumdXML, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
ProductXML productXML = new ProductXML(0,"Tablet", 80.0);
pm.makePersistent(productXML);
ProductXML productXML2 = new ProductXML(1,"Phone", 20.0);
pm.makePersistent(productXML2);
ProductXML productXML3 = new ProductXML(2,"Laptop", 200.0);
pm.makePersistent(productXML3);
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public void listXMLProducts(){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumdXML, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
Query q = pm.newQuery("SELECT FROM " + ProductXML.class.getName());
List<ProductXML> products = (List<ProductXML>) q.execute();
Iterator<ProductXML> iter = products.iterator();
while (iter.hasNext()) {
ProductXML p = iter.next();
LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.getName(), p.getPrice() });
pm.deletePersistent(p);
}
LOGGER.log(Level.INFO, "--------------------------------------------------------------");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
}

44
libraries/src/main/java/com/baeldung/jdo/ProductXML.java Normal file
View File

@ -0,0 +1,44 @@
package com.baeldung.jdo;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.PrimaryKey;
import javax.xml.bind.annotation.XmlAttribute;
@PersistenceCapable()
public class ProductXML {
@XmlAttribute
private long productNumber = 0;
@PrimaryKey
private String name = null;
private Double price = 0.0;
public ProductXML() {
this.productNumber = 0;
this.name = null;
this.price = 0.0;
}
public ProductXML(long productNumber, String name, Double price) {
this.productNumber = productNumber;
this.name = name;
this.price = price;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
}