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

From JDO to XML and Back Again 2/3 (#2681)

Browse Source 
* From JDO to XML and Back Again 2/3

* remove comments

* remove myapp class

* divided into methods

* remove main methods

* remove classes
This commit is contained in:
Shaimaa Shalaby 2017-10-01 23:53:09 +02:00 committed by Zeger Hendrikse
parent d343c59a3c
commit 3220913767
7 changed files with 342 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
libraries/src/main/java/com/baeldung/jdo/xml/AnnotadedPerson.java Normal file
View File

@ -0,0 +1,72 @@
package com.baeldung.jdo.xml;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.jdo.annotations.Element;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.PrimaryKey;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
@PersistenceCapable(
schema="/myproduct/people",
table="person"
)
public class AnnotadedPerson {
@XmlAttribute
private long personNum;
@PrimaryKey
private String firstName;
private String lastName;
@XmlElementWrapper(name="phone-numbers")
@XmlElement(name="phone-number")
@Element(types=String.class)
private List phoneNumbers = new ArrayList();
public AnnotadedPerson(long personNum, String firstName, String lastName) {
super();
this.personNum = personNum;
this.firstName = firstName;
this.lastName = lastName;
}
public long getPersonNum() {
return personNum;
}
public void setPersonNum(long personNum) {
this.personNum = personNum;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public List getPhoneNumbers() {
return phoneNumbers;
}
public void setPhoneNumbers(List phoneNumbers) {
this.phoneNumbers = phoneNumbers;
}
}

105
libraries/src/main/java/com/baeldung/jdo/xml/MyApp.java Normal file
View File

@ -0,0 +1,105 @@
package com.baeldung.jdo.xml;
import java.util.List;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;
import javax.jdo.Query;
import javax.jdo.Transaction;
import org.datanucleus.api.jdo.JDOPersistenceManagerFactory;
import org.datanucleus.metadata.PersistenceUnitMetaData;
public class MyApp {
private static PersistenceUnitMetaData pumd;
private static PersistenceManagerFactory pmf;
private static PersistenceManager pm;
public static void main( String[] args ) {
//persist product object using dynamic persistence unit
defineDynamicPersistentUnit();
Product product = new Product("id1","Sony Discman", "A standard discman from Sony", 49.99);
persistObject(product);
closePersistenceManager();
//persist AnnotatedPerson object using named pmf
defineNamedPersistenceManagerFactory("XmlDatastore");
AnnotadedPerson annotatedPerson = new AnnotadedPerson(654320,"annotated","person");
annotatedPerson.getPhoneNumbers().add("999999999");
annotatedPerson.getPhoneNumbers().add("000000000");
persistObject(annotatedPerson);
queryAnnotatedPersonsInXML();
closePersistenceManager();
//persist Person object using PMF created by properties file
definePersistenceManagerFactoryUsingPropertiesFile("META-INF\\datanucleus.properties");
Person person = new Person(654321,"bealdung","author");
person.getPhoneNumbers().add("123456789");
person.getPhoneNumbers().add("987654321");
persistObject(person);
queryPersonsInXML();
closePersistenceManager();
}
public static void defineDynamicPersistentUnit(){
PersistenceUnitMetaData pumd = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
pumd.addProperty("javax.jdo.option.ConnectionURL", "xml:file:myfile_dynamicPMF.xml");
pumd.addProperty("datanucleus.schema.autoCreateAll", "true");
pumd.addProperty("datanucleus.xml.indentSize", "4");
pmf = new JDOPersistenceManagerFactory(pumd, null);
pm = pmf.getPersistenceManager();
}
public static void defineNamedPersistenceManagerFactory(String pmfName){
pmf = JDOHelper.getPersistenceManagerFactory("XmlDatastore");
pm = pmf.getPersistenceManager();
}
public static void definePersistenceManagerFactoryUsingPropertiesFile(String filePath){
pmf = JDOHelper.getPersistenceManagerFactory(filePath);
pm = pmf.getPersistenceManager();
}
public static void closePersistenceManager(){
if(pm!=null && !pm.isClosed()){
pm.close();
}
}
public static void persistObject(Object obj){
Transaction tx = pm.currentTransaction();
try {
tx.begin();
pm.makePersistent(obj);
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
}
}
public static void queryPersonsInXML(){
Query<Person> query = pm.newQuery(Person.class);
List<Person> result = query.executeList();
System.out.println("name: "+result.get(0).getFirstName());
}
public static void queryAnnotatedPersonsInXML(){
Query<AnnotadedPerson> query = pm.newQuery(AnnotadedPerson.class);
List<AnnotadedPerson> result = query.executeList();
System.out.println("name: "+result.get(0).getFirstName());
}
}

65
libraries/src/main/java/com/baeldung/jdo/xml/Person.java Normal file
View File

@ -0,0 +1,65 @@
package com.baeldung.jdo.xml;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.jdo.annotations.Element;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.PrimaryKey;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
@PersistenceCapable
public class Person {
private long personNum;
@PrimaryKey
private String firstName;
private String lastName;
private List phoneNumbers = new ArrayList();
public Person(long personNum, String firstName, String lastName) {
super();
this.personNum = personNum;
this.firstName = firstName;
this.lastName = lastName;
}
public long getPersonNum() {
return personNum;
}
public void setPersonNum(long personNum) {
this.personNum = personNum;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public List getPhoneNumbers() {
return phoneNumbers;
}
public void setPhoneNumbers(List phoneNumbers) {
this.phoneNumbers = phoneNumbers;
}
}

58
libraries/src/main/java/com/baeldung/jdo/xml/Product.java Normal file
View File

@ -0,0 +1,58 @@
package com.baeldung.jdo.xml;
import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.PersistenceAware;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;
@PersistenceCapable
public class Product {
@PrimaryKey
String id;
String name;
String description;
double price;
public Product(){
}
public Product(String id,String name,String description,double price){
this.id = id;
this.name=name;
this.description = description;
this.price = price;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
}

4
libraries/src/main/resources/META-INF/datanucleus.properties Normal file
View File

@ -0,0 +1,4 @@
javax.jdo.PersistenceManagerFactoryClass=org.datanucleus.api.jdo.JDOPersistenceManagerFactory
javax.jdo.option.ConnectionURL= xml:file:myfile-ds.xml
datanucleus.xml.indentSize=6
datanucleus.schema.autoCreateAll=true

17
libraries/src/main/resources/META-INF/jdoconfig.xml Normal file
View File

@ -0,0 +1,17 @@
<?xml version="1.0" encoding="UTF-8"?>
<jdoconfig xmlns="http://xmlns.jcp.org/xml/ns/jdo/jdoconfig"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/jdo/jdoconfig
http://xmlns.jcp.org/xml/ns/jdo/jdoconfig_3_2.xsd"
version="3.2">
<!-- Datastore Txn PMF -->
<persistence-manager-factory name="XmlDatastore">
<property name="javax.jdo.PersistenceManagerFactoryClass"
value="org.datanucleus.api.jdo.JDOPersistenceManagerFactory" />
<property name="javax.jdo.option.ConnectionURL" value="xml:file:namedPMF-ds.xml" />
<property name="datanucleus.xml.indentSize" value="6" />
<property name="datanucleus.schema.autoCreateAll"
value="true" />
</persistence-manager-factory>
</jdoconfig>

21
libraries/src/main/resources/META-INF/package.jdo Normal file
View File

@ -0,0 +1,21 @@
<jdo xmlns="http://xmlns.jcp.org/xml/ns/jdo/jdo" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/jdo/jdo http://xmlns.jcp.org/xml/ns/jdo/jdo_3_1.xsd"
version="3.1">
<package name="com.baeldung.jdo.xml">
<class name="Person" detachable="true" schema="/myproduct/people"
table="person">
<field name="personNum">
<extension vendor-name="datanucleus" key="XmlAttribute"
value="true" />
</field>
<field name="firstName" primary-key="true" /> <!-- PK since JAXB requires String -->
<field name="lastName" />
<field name="phoneNumbers">
<collection element-type="java.lang.String" />
<element column="phoneNumber" />
</field>
</class>
</package>
</jdo>