SometimeSometimes, you may want to have your own Hibernate entity and dao DAO to access extra database table tables in your plugin. It is very simple to achieve that by adding the following file files and class classes to your plugin.
Similar to development in Spring + Hibernate, a an application context file is required for your plugin. In my sample plugin, I created a productsApplicationContexta productApplicationContext.xml as below
Thai |
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บางครั้งคุณอาจต้องการให้องค์กรไฮเบอร์เนตของคุณและ dao เข้าถึงตารางฐานข้อมูลเพิ่มเติมในปลั๊กอินของคุณ มันง่ายมากที่จะทำเช่นนั้นโดยเพิ่มไฟล์และคลาสต่อไปนี้ลงในปลั๊กอินของคุณ คล้ายกับการพัฒนาใน Spring + Hibernate จำเป็นต้องมีไฟล์บริบทแอปพลิเคชันสำหรับปลั๊กอินของคุณ ในปลั๊กอินตัวอย่างของฉันฉันสร้าง productsApplicationContextproductApplicationContext.xml ดังนี้ |
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language | xml |
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title | Application context file (productsApplicationContextproductApplicationContext.xml) |
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linenumbers | true |
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlnsxsi:aopschemaLocation="http://www.springframework.org/schema/aop"
xmlns:tx="beans http://www.springframework.org/schema/tx"beans/spring-beans-4.1.xsd">
<bean xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsdid="productSessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
<property name="dataSource" ref="setupDataSource"/>
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<property name="mappingResources">
<bean id="productSessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<list>
<property name="dataSource" ref="setupDataSource"/>
<property name="mappingResources">
<list>
<value>/org/joget/sample/productsproduct/model/ProductsProduct.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.format_sql">false</prop>
</props>
</property>
</bean>
<bean id="productsDaoproductDao" class="org.joget.productsproduct.dao.ProductsDaoImplProductDaoImpl">
<property name="sessionFactory" ref="productSessionFactory" />
</bean>
</beans> |
In the application context, I created 2 beans. Bean "productSessionFactory" is to initialize a session factory with the hibernate mapping file. Bean "productsDaoproductDao" is to initialize the dao DAO object of my sample plugin.
Next, we need a Hibernate Mapping mapping file. In my sample plugin, it is is /org/joget/sample/productsproduct/model/ProductsProduct.hbm.xml. It mapped the POJO "org.joget.productsproduct.model.Product" with "valuhibernate_productsproduct" table.
Thai |
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ในบริบทของแอปพลิเคชันฉันสร้าง 2 beans Bean "productSessionFactory" คือการเริ่มต้นโรงงานเซสชันด้วยไฟล์การทำแผนที่จำศีล Bean "productsDaoproductDao" คือการเริ่มต้นวัตถุ dao ของปลั๊กอินตัวอย่างของฉัน ต่อไปเราต้องใช้ไฟล์ Hibernate Mapping ในปลั๊กอินตัวอย่างของฉันมันเป็น /org/joget/sample/productsproduct/model/ProductsProduct.hbm.xml มันจับคู่ POJO "org.joget.products.model.Product" กับตาราง "valueshibernate_productsproduct" |
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language | xml |
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title | Hibernate mapping file (ProductsProduct.hbm.xml) |
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linenumbers | true |
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class entity-name="ProductsProduct" name="org.joget.productsproduct.model.Product" table="valuhibernate_productsproduct">
<id column="id" name="id" type="string"/>
<property column="name" name="name" type="string"/>
<property column="description" name="description" type="string"/>
</class>
</hibernate-mapping> |
You need a utility class to initialized initialize your application context and allow you to and retrieve the bean object.
Thai |
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คุณต้องการคลาสยูทิลิตี้เพื่อเริ่มต้นบริบทแอปพลิเคชันของคุณและอนุญาตให้คุณเรียกคืนออบเจ็กต์ bean |
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language | java |
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title | Utility class |
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linenumbers | true |
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package org.joget.productsproduct;
import org.joget.apps.app.service.AppUtil;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContextGenericXmlApplicationContext;
public class AppContext {
private static AppContext instance;
private AbstractApplicationContextfinal GenericXmlApplicationContext appContextspringApplicationContext;
public synchronized static AppContext getInstance() {
if (instance == null) {
instance = new AppContext();
}
return instance;
}
private AppContext() {
Threadthis.springApplicationContext currentThread= =new Thread.currentThreadGenericXmlApplicationContext();
ClassLoader threadContextClassLoader = currentThread.getContextClassLoader(this.springApplicationContext.setValidating(false);
try {
currentThread.setContextClassLoaderthis.springApplicationContext.setClassLoader(this.getClass().getClassLoader());
this.appContext = new ClassPathXmlApplicationContext(new String[]{"/productsApplicationContext.xml"}, this.getClass(), this.springApplicationContext.setParent(AppUtil.getApplicationContext());
} finally {this.springApplicationContext.load("/productApplicationContext.xml");
currentThread.setContextClassLoader(threadContextClassLoaderthis.springApplicationContext.refresh();
}
}
public AbstractApplicationContext getAppContext() {
return appContextspringApplicationContext;
}
}
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You need to orverride findSession
method in ProductsDaoImpl
as compared to joget version 4.
Thai |
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คุณต้อง orverride วิธี findSession ใน ProductsDaoImpl เมื่อเปรียบเทียบกับ joget เวอร์ชัน 4 |
Sample DAO implementation
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language | java |
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title | Overriding findSessionDAO Implementation |
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linenumbers | true |
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package org.joget.productsproduct.dao;
import java.util.Collection;
import org.joget.hibernate.Session;
import org.hibernate.SessionFactoryapps.app.service.AppUtil;
import org.joget.commons.spring.model.AbstractSpringDao;
import org.joget.commons.util.LogUtil;
import org.joget.products.model.Product;
public class ProductsDaoImpl extends AbstractSpringDao implements ProductsDao {
@Override
public Session findSession() {
;
import org.joget.product.model.Product;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
public class ProductDaoImpl extends AbstractSpringDao implements ProductDao {
@Override
public Boolean addProduct(Product product) {
try {
TransactionTemplate transactionTemplate = (TransactionTemplate) AppUtil.getApplicationContext().getBean("transactionTemplate");
Boolean result = (Boolean)transactionTemplate.execute(new TransactionCallback() {
@Override
public Object doInTransaction(TransactionStatus ts) {
save("Product", product);
return true;
}
});
return result;
} catch (Exception e) {
LogUtil.error(ProductDaoImpl.class.getName(), e, "Add Product Error!");
return false;
}
}
@Override
public Boolean updateProduct(Product product) {
try {
TransactionTemplate transactionTemplate = (TransactionTemplate) AppUtil.getApplicationContext().getBean("transactionTemplate");
Boolean result = (Boolean)transactionTemplate.execute(new TransactionCallback<Object>() {
@Override
public Object doInTransaction(TransactionStatus ts) {
merge("Product", product);
return true;
}
});
return result;
} catch (Exception e) {
LogUtil.error(ProductDaoImpl.class.getName(), e, "Update Product Error!");
return false;
}
}
@Override
public Boolean deleteProduct(String id) {
try {
TransactionTemplate transactionTemplate = (TransactionTemplate) AppUtil.getApplicationContext().getBean("transactionTemplate");
Boolean result = (Boolean)transactionTemplate.execute(new TransactionCallback() {
@Override
public Object doInTransaction(TransactionStatus ts) {
Product product = getProduct(id);
Session session = null;
if (product != null) {
SessionFactory sf = super.getSessionFactory();
try {delete("Product", product);
session = sf.getCurrentSession();
} catch (Exception e) {}
return true;
if (session ==} null)else {
session = sf.openSession();
}
return false;
return session;
}
public Boolean addProduct(Product product) {
try {}
save("Products", product});
return trueresult;
} catch (Exception e) {
LogUtil.error(ProductsDaoImplProductDaoImpl.class.getName(), e, "AddDelete Product Error!");
return false;
}
}
public Boolean updateProduct(Product product) {
try {
merge("Products", product);
@Override
public Product getProduct(String return true;id) {
}try catch{
(Exception e) {
TransactionTemplate transactionTemplate = LogUtil.error(ProductsDaoImpl.class.getName(), e, "Update Product Error!");
(TransactionTemplate) AppUtil.getApplicationContext().getBean("transactionTemplate");
return false;
Product product = (Product)transactionTemplate.execute(new TransactionCallback() }{
}
public Boolean deleteProduct(String id) {
@Override
try {
public ProductObject product = getProduct(id);
doInTransaction(TransactionStatus ts) {
if (product != null) {
return (Product) find("Product", id);
delete("Products", product);}
});
return trueproduct;
} catch (Exception e) {
LogUtil.error(ProductsDaoImplProductDaoImpl.class.getName(), e, "DeleteGet Product Error!");
return falsenull;
}
}
@Override
public ProductCollection<Product> getProductgetProducts(String id) {
try {
TransactionTemplate transactionTemplate return= (ProductTransactionTemplate) findAppUtil.getApplicationContext().getBean("ProductstransactionTemplate", id);
} catch (Exception e Collection products = (Collection)transactionTemplate.execute(new TransactionCallback<Object>() {
LogUtil.error(ProductsDaoImpl.class.getName(), e, "Get Product Error!");
@Override
public Object doInTransaction(TransactionStatus returnts) null;{
}
}
public Collection<Product>return getProducts() {find("Product", "", null, null, null, null, null);
try {
}
Collection products = super.find("Products", "", null, null, null, null, null });
return products;
} catch (Exception e) {
LogUtil.error(ProductsDaoImplProductDaoImpl.class.getName(), e, "Get Products Error!");
} return null;
return null;}
}
} |
After you have implemented your POJO and dao DAO class, you should be able to use your dao DAO in your plugin as followingfollows.
Please refer to the attached sample plugin for the POJO and dao DAO implementation.
Thai |
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หลังจากที่คุณใช้งาน POJO และคลาส dao ของคุณคุณควรจะสามารถใช้ dao ของคุณในปลั๊กอินได้ดังต่อไปนี้ โปรดอ้างอิงปลั๊กอินตัวอย่างที่แนบมาสำหรับการใช้งาน POJO และ dao |
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name | hibernate-product-src.zip |
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height | 250 |
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language | java |
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title | POJO and dao implementationDAO usage |
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linenumbers | true |
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ProductsDaoProductDao productdao = (ProductsDaoProductDao) AppContext.getInstance().getAppContext().getBean("productsDaoproductDao");
Product p = new Product();
p.setId("001");
p.setName("Product A");
p.setDescription("Product A Descpription");
productdao.addProduct(p); |
In this KB:sample this sample plugin, you are able to add, delete and list product by the following JSON API.
Thai |
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ใน KBใน KB:sample ปลั๊กอินตัวอย่างคุณสามารถเพิ่มลบและแสดงรายการผลิตภัณฑ์โดย JSON API ต่อไปนี้ |
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http://localhost:8080/jw/web/json/plugin/org.joget.productsproduct.ProductsApiProductApi/service?_action=add&name=Product _A&desc=Product A _Descpription |
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http://localhost:8080/jw/web/json/plugin/org.joget.productsproduct.ProductsApiProductApi/service?_action=delete&id=001 |
Thai |
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เพื่อแสดงรายการผลิตภัณฑ์ทั้งหมด |
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title | To list all products |
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http://localhost:8080/jw/web/json/plugin/org.joget.productsproduct.ProductsApiProductApi/service?_action=list |