BAEL-1734 move packages from libraries to libraries-data
This commit is contained in:
RajatGarg
299
libraries-data/src/main/java/com/baeldung/jdo/GuideToJDO.java
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299
libraries-data/src/main/java/com/baeldung/jdo/GuideToJDO.java
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package com.baeldung.jdo;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Random;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.jdo.PersistenceManager;
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import javax.jdo.PersistenceManagerFactory;
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import javax.jdo.Query;
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import javax.jdo.Transaction;
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import org.datanucleus.api.jdo.JDOPersistenceManagerFactory;
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import org.datanucleus.metadata.PersistenceUnitMetaData;
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public class GuideToJDO {
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private static final Logger LOGGER = Logger.getLogger(GuideToJDO.class.getName());
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private Random rnd = new Random();
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private PersistenceUnitMetaData pumd;
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private PersistenceUnitMetaData pumdXML;
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public static void main(String[] args) {
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new GuideToJDO();
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}
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public GuideToJDO() {
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CreateH2Properties();
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CreateXMLProperties();
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CreateProducts();
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ListProducts();
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QueryJDOQL();
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QuerySQL();
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QueryJPQL();
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UpdateProducts();
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ListProducts();
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DeleteProducts();
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ListProducts();
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persistXML();
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listXMLProducts();
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}
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public void CreateH2Properties() {
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pumd = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
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pumd.addClassName("com.baeldung.jdo.Product");
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pumd.setExcludeUnlistedClasses();
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pumd.addProperty("javax.jdo.option.ConnectionDriverName", "org.h2.Driver");
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pumd.addProperty("javax.jdo.option.ConnectionURL", "jdbc:h2:mem:mypersistence");
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pumd.addProperty("javax.jdo.option.ConnectionUserName", "sa");
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pumd.addProperty("javax.jdo.option.ConnectionPassword", "");
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pumd.addProperty("datanucleus.autoCreateSchema", "true");
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}
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public void CreateXMLProperties() {
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pumdXML = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
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pumdXML.addClassName("com.baeldung.jdo.ProductXML");
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pumdXML.setExcludeUnlistedClasses();
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pumdXML.addProperty("javax.jdo.option.ConnectionURL", "xml:file:myPersistence.xml");
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pumdXML.addProperty("datanucleus.autoCreateSchema", "true");
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}
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public void CreateProducts() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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Product product = new Product("Tablet", 80.0);
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pm.makePersistent(product);
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Product product2 = new Product("Phone", 20.0);
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pm.makePersistent(product2);
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Product product3 = new Product("Laptop", 200.0);
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pm.makePersistent(product3);
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for (int i = 0; i < 100; i++) {
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String nam = "Product-" + i;
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double price = rnd.nextDouble();
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Product productx = new Product(nam, price);
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pm.makePersistent(productx);
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}
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings("rawtypes")
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public void UpdateProducts() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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Query query = pm.newQuery(Product.class, "name == \"Phone\"");
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Collection result = (Collection) query.execute();
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Product product = (Product) result.iterator().next();
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product.setName("Android Phone");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings("rawtypes")
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public void DeleteProducts() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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Query query = pm.newQuery(Product.class, "name == \"Android Phone\"");
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Collection result = (Collection) query.execute();
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Product product = (Product) result.iterator().next();
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pm.deletePersistent(product);
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public void ListProducts() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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Query q = pm.newQuery("SELECT FROM " + Product.class.getName() + " WHERE price > 10");
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List<Product> products = (List<Product>) q.execute();
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Iterator<Product> iter = products.iterator();
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while (iter.hasNext()) {
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Product p = iter.next();
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LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
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}
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LOGGER.log(Level.INFO, "--------------------------------------------------------------");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public void QueryJDOQL() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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// Declarative JDOQL :
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LOGGER.log(Level.INFO, "Declarative JDOQL --------------------------------------------------------------");
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Query qDJDOQL = pm.newQuery(Product.class);
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qDJDOQL.setFilter("name == 'Tablet' && price == price_value");
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qDJDOQL.declareParameters("double price_value");
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List<Product> resultsqDJDOQL = qDJDOQL.setParameters(80.0).executeList();
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Iterator<Product> iterDJDOQL = resultsqDJDOQL.iterator();
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while (iterDJDOQL.hasNext()) {
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Product p = iterDJDOQL.next();
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LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
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}
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LOGGER.log(Level.INFO, "--------------------------------------------------------------");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public void QuerySQL() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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// SQL :
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LOGGER.log(Level.INFO, "SQL --------------------------------------------------------------");
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Query query = pm.newQuery("javax.jdo.query.SQL", "SELECT * FROM PRODUCT");
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query.setClass(Product.class);
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List<Product> results = query.executeList();
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Iterator<Product> iter = results.iterator();
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while (iter.hasNext()) {
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Product p = iter.next();
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LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
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}
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LOGGER.log(Level.INFO, "--------------------------------------------------------------");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public void QueryJPQL() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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// JPQL :
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LOGGER.log(Level.INFO, "JPQL --------------------------------------------------------------");
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Query q = pm.newQuery("JPQL", "SELECT p FROM " + Product.class.getName() + " p WHERE p.name = 'Laptop'");
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List results = (List) q.execute();
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Iterator<Product> iter = results.iterator();
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while (iter.hasNext()) {
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Product p = iter.next();
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LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
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}
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LOGGER.log(Level.INFO, "--------------------------------------------------------------");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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public void persistXML() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumdXML, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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ProductXML productXML = new ProductXML(0, "Tablet", 80.0);
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pm.makePersistent(productXML);
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ProductXML productXML2 = new ProductXML(1, "Phone", 20.0);
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pm.makePersistent(productXML2);
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ProductXML productXML3 = new ProductXML(2, "Laptop", 200.0);
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pm.makePersistent(productXML3);
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public void listXMLProducts() {
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PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumdXML, null);
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PersistenceManager pm = pmf.getPersistenceManager();
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Transaction tx = pm.currentTransaction();
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try {
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tx.begin();
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Query q = pm.newQuery("SELECT FROM " + ProductXML.class.getName());
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List<ProductXML> products = (List<ProductXML>) q.execute();
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Iterator<ProductXML> iter = products.iterator();
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while (iter.hasNext()) {
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ProductXML p = iter.next();
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LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.getName(), p.getPrice() });
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pm.deletePersistent(p);
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}
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LOGGER.log(Level.INFO, "--------------------------------------------------------------");
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tx.commit();
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} finally {
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if (tx.isActive()) {
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tx.rollback();
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}
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pm.close();
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}
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}
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}
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