Is there someone that could answer questions concerning the HibernateTravelApp tutorial. I have written it a couple times per the tutorial and I am presently remodeling it to fit my own MySQL database. If there is a convenient way to transfer this data base along with the .zip of the netbeans project I would help me to be able to have someone look at it
I can .zip the project but it is possible to send the MySQL database?
If not I have the session bean for the HibernateTravelApp tutorialbelow and I am trying to understand how the drop down list is populated and how the query is configured to display the table data.
/*
* SessionBean1.java
*
* Created on Aug 21, 2008, 7:41:35 AM
*/
package hibernatetravelapp;
import com.sun.rave.web.ui.appbase.AbstractSessionBean;
import com.sun.webui.jsf.model.Option;
import java.util.List;
import java.util.Set;
import javax.faces.FacesException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.collection.PersistentSet;
import travel.HibernateUtil;
import travel.Person;
import travel.Trip;
/**
* <p>Session scope data bean for your application. Create properties
* here to represent cached data that should be made available across
* multiple HTTP requests for an individual user.</p>
*
* <p>An instance of this class will be created for you automatically,
* the first time your application evaluates a value binding expression
* or method binding expression that references a managed bean using
* this class.</p>
*
* @author depot
*/
public class SessionBean1 extends AbstractSessionBean {
// <editor-fold defaultstate="collapsed" desc="Managed Component Definition">
/**
* <p>Automatically managed component initialization. <strong>WARNING:</strong>
* This method is automatically generated, so any user-specified code inserted
* here is subject to being replaced.</p>
*/
private void _init() throws Exception {
}
// </editor-fold>
/**
* <p>Construct a new session data bean instance.</p>
*/
public SessionBean1() {
}
private Option[] personOptions;
private Integer selectedPersonId;
private Trip[] trips4Person;
/**
* Get the value of trips4Person
*
* @return the value of trips4Person
*/
public Trip[] getTrips4Person() {
return trips4Person;
}
/**
* Set the value of trips4Person
*
* @param trips4Person new value of trips4Person
*/
public void setTrips4Person(Trip[] trips4Person) {
this.trips4Person = trips4Person;
}
/**
* Get the value of selectedPersonId
*
* @return the value of selectedPersonId
*/
public Integer getSelectedPersonId() {
return selectedPersonId;
}
/**
* Set the value of selectedPersonId
*
* @param selectedPersonId new value of selectedPersonId
*/
public void setSelectedPersonId(Integer selectedPersonId) {
this.selectedPersonId = selectedPersonId;
updateTrips4Person();
}
/**
* Get the value of personOptions
*
* @return the value of personOptions
*/
public Option[] getPersonOptions() {
return personOptions;
}
/**
* Set the value of personOptions
*
* @param personOptions new value of personOptions
*/
public void setPersonOptions(Option[] personOptions) {
this.personOptions = personOptions;
}
/**
* <p>This method is called when this bean is initially added to
* session scope. Typically, this occurs as a result of evaluating
* a value binding or method binding expression, which utilizes the
* managed bean facility to instantiate this bean and store it into
* session scope.</p>
*
* <p>You may customize this method to initialize and cache data values
* or resources that are required for the lifetime of a particular
* user session.</p>
*/
@Override
public void init() {
super.init();
try {
_init();
} catch (Exception e) {
log("SessionBean1 Initialization Failure", e);
throw e instanceof FacesException ? (FacesException) e : new FacesException(e);
}
// Fill in the personOptions[]
buildPersonOptions();
}
/**
* <p>This method is called when the session containing it is about to be
* passivated. Typically, this occurs in a distributed servlet container
* when the session is about to be transferred to a different
* container instance, after which the <code>activate()</code> method
* will be called to indicate that the transfer is complete.</p>
*
* <p>You may customize this method to release references to session data
* or resources that can not be serialized with the session itself.</p>
*/
@Override
public void passivate() {
}
/**
* <p>This method is called when the session containing it was
* reactivated.</p>
*
* <p>You may customize this method to reacquire references to session
* data or resources that could not be serialized with the
* session itself.</p>
*/
@Override
public void activate() {
}
/**
* <p>This method is called when this bean is removed from
* session scope. Typically, this occurs as a result of
* the session timing out or being terminated by the application.</p>
*
* <p>You may customize this method to clean up resources allocated
* during the execution of the <code>init()</code> method, or
* at any later time during the lifetime of the application.</p>
*/
@Override
public void destroy() {
}
/**
* <p>Return a reference to the scoped data bean.</p>
*
* @return reference to the scoped data bean
*/
protected ApplicationBean1 getApplicationBean1() {
return (ApplicationBean1) getBean("ApplicationBean1");
}
private void buildPersonOptions() {
List<Person> personList = null;
try {
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
Transaction tx = session.beginTransaction();
Query q = session.createQuery("from Person");
personList = (List<Person>) q.list();
} catch (Exception e) {
e.printStackTrace();
}
personOptions = new Option[personList.size()];
int i = 0;
for (Person person : personList) {
Option opt = new Option(person.getPersonId(), person.getName());
personOptions[i++] = opt;
}
}
private void updateTrips4Person() {
if (selectedPersonId == null) {
trips4Person = new Trip[1];
trips4Person[0] = new Trip();
return;
}
Set personTrips = null;
try {
Session session =
HibernateUtil.getSessionFactory().getCurrentSession();
Transaction tx = session.beginTransaction();
Person person = (Person) session.load(Person.class, selectedPersonId);
personTrips = (PersistentSet) person.getTrips();
} catch (Exception e) {
e.printStackTrace();
}
trips4Person = (Trip[]) personTrips.toArray(new Trip[0]);
}
}I see in the JSF it controls the table rows
<?xml version="1.0" encoding="UTF-8"?>
<!--
Document : Page1
Created on : Aug 21, 2008, 7:41:36 AM
Author : depot
-->
<jsp:root version="2.1" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:webuijsf="http://www.sun.com/webui/webuijsf">
<jsp:directive.page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"/>
<f:view>
<webuijsf:page id="page1">
<webuijsf:html id="html1">
<webuijsf:head id="head1">
<webuijsf:link id="link1" url="/resources/stylesheet.css"/>
</webuijsf:head>
<webuijsf:body id="body1" style="-rave-layout: grid">
<webuijsf:form id="form1">
<webuijsf:messageGroup id="messageGroup1" style="position: absolute; left: 384px; top: 432px"/>
<webuijsf:table augmentTitle="false" id="table1" style="left: 144px; top: 168px; position: absolute; width: 0px" title="Table" width="0">
<webuijsf:tableRowGroup id="tableRowGroup1" rows="10" sourceData="#{SessionBean1.trips4Person}" sourceVar="currentRow">
<webuijsf:tableColumn headerText="tripId" id="tableColumn1" sort="tripId">
<webuijsf:staticText id="staticText1" text="#{currentRow.value['tripId']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn headerText="depCity" id="tableColumn2" sort="depCity">
<webuijsf:staticText id="staticText2" text="#{currentRow.value['depCity']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn headerText="depDate" id="tableColumn3" sort="depDate">
<webuijsf:staticText id="staticText3" text="#{currentRow.value['depDate']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn headerText="destCity" id="tableColumn4" sort="destCity">
<webuijsf:staticText id="staticText4" text="#{currentRow.value['destCity']}"/>
</webuijsf:tableColumn>
<webuijsf:tableColumn headerText="tripTypeId" id="tableColumn5" sort="tripTypeId">
<webuijsf:staticText id="staticText5" text="#{currentRow.value['tripTypeId']}"/>
</webuijsf:tableColumn>
</webuijsf:tableRowGroup>
</webuijsf:table>
<webuijsf:dropDown binding="#{Page1.dropDown1}" id="dropDown1" items="#{SessionBean1.personOptions}"
onChange="webui.suntheme4_2.common.timeoutSubmitForm(this.form, 'dropDown1');" selected="#{SessionBean1.selectedPersonId}" style="position: absolute; left: 120px; top: 72px"/>
</webuijsf:form>
</webuijsf:body>
</webuijsf:html>
</webuijsf:page>
</f:view>
</jsp:root>maybe I should start by understanding elements in the xml Person.hbm
<?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 dynamic-insert="false" dynamic-update="false"
mutable="true" name="travel.Person" optimistic-lock="version"
polymorphism="implicit" select-before-update="false" table="PERSON">
<id column="PERSONID" name="personId">
<generator class="increment"/>
</id>
<property column="NAME" name="name"/>
<property column="JOBTITLE" name="jobTitle"/>
<property column="FREQUENTFLYER" name="frequentFlyer"/>
<set cascade="all-delete-orphan" inverse="true" lazy="true" name="trips" table="TRIP">
<key column="PERSONID"/>
<one-to-many class="travel.Trip"/>
</set>
</class>
</hibernate-mapping>in my MySQL database I used the same structure as above.
I have this mapping structure for 3 classes and the HibernateUtil.class
for instance my database uses a Teacher.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package schedule;
/**
*
* @author depot
*/
public class Teacher {
private int instrNum;
private String instructor;
private String state;
public int getInstrNum() {
return instrNum;
}
public void setInstrNum(int instrNum) {
this.instrNum = instrNum;
}
public String getInstructor() {
return instructor;
}
public void setInstructor(String instructor) {
this.instructor = instructor;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
}this is the .hbm.xml
<?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 dynamic-insert="false" dynamic-update="false" mutable="true" name="schedule.Teacher" optimistic-lock="version" polymorphism="implicit" select-before-update="false">
<id column="instr_num" name="instructorId">
<generator class="increment"/>
</id>
<!-- <property column="instr_num" name="instructorId"> -->
<property column="instr_lname" name="instructor"/>
<property column="instr_state" name="state"/>
<set cascade="all-delete-orphan" inverse="true" lazy="true" name="instructorId" table="booking">
<key column="instr_num"/>
<one-to-many class="schedule.Booking"/>
</set>
</class>
</hibernate-mapping>in my MySQL database I have a Instr_num field that relates to the Teacher.instrNum yet this field from the db Instr_num is not AUTO_INCREMENT so I was questioning the use of
<id column="instr_num" name="instructorId">
<generator class="increment"/>
</id>I am not sure why this would be different from the other properties
and concerning the code
<set cascade="all-delete-orphan" inverse="true" lazy="true" name="instructorId" table="booking">
<key column="instr_num"/>
<one-to-many class="schedule.Booking"/>
</set>I believe this is a type of list that will only except Teacher.instructor with no duplication
ultimately I would like to have the drop down list select a Teacher and display info from the booking class concerning dates and times with students
Is this xml capable of this?
I know my line of questions are scattered so any input on any subject would be apreciated.
I think my first concern is to understand how the Option[] and the q.query and other areas are working. from the tutorial HibernateTravelApp
I introduced a lot of code that I will try to formulate more spicific questions to understand the tutorial if any one is able to help.
Thanks
-Steve
