JSF Portlet Database Interaction Copyright © 2000-2006 Liferay, Inc. All Rights Reserved.

Transcription

JSF Portlet
Database Interaction
Copyright © 2000-2006 Liferay, Inc.
All Rights Reserved.
No material may be reproduced electronically or in print without written
permission from Liferay, Inc.
Special Note
• This exercise will not work with any
version of Liferay before 4.2.2
• In order to access a new service in the
service layer in Liferay from a portlet war,
you must use the code from a Liferay build
after version 4.2.1.
• An update to SVN trunk will allow this
example to work.
Objective
The goal of this tutorial is to add Database
interaction to the JSF Portlet.
1.
Create a database structure
– service.xml
2. Auto generating the Service Layer code and SQL
– build.xml – build-service
3. Modifying MySQL to include new table
– portal-tables.sql
4. Create method to add record to the database
–
5.
BookLocalServiceImpl.java
Retrieve records from the database
–
service.xml
• Locate the current service.xml file in the
C:\training\liferay\ext\ext-ejb\ directory
• Move service.xml to the reports directory:
…\ext\ext-ejb\src\com\ext\portlet\reports
• Go back to the \ext\ext-ejb\ directory
• Create a new service.xml file in
…\ext\ext-ejb\
service.xml contents
<?xml version="1.0"?>
<!DOCTYPE service-builder PUBLIC "-//Liferay//DTD Service Builder 4.0.0//EN"
"http://www.liferay.com/dtd/liferay-service-builder_4_0_0.dtd">
<service-builder root-dir=".." package-path="com.ext.portlet">
<portlet name="Library" short-name="Library" />
<entity name="Book" local-service="true">

<column name="bookId" type="String" primary="true" />

<column name="companyId" type="String" />
<column name="groupId" type="String" />
<column name="userId" type="String" />

<column name="createDate" type="Date" />
<column name="modifiedDate" type="Date" />

<column name="title" type="String" />
</entity>
</service-builder>
Overview of service.xml
• package-path="com.ext.portlet“ is the path that
the class will generate to
C:\Training\liferay\ext\ext-ejb\src\com\ext\portlet
• <portlet name="Library" short-name="Library" />
is used to generate a new package called
“com.ext.portlet.library” in your source directory
C:\Training\liferay\ext\ext-ejb\src\
• <entity name="Book" local-service="true"> is the
Database table you want to create and then link
up to in the code
Checkpoint
• The generation of the service layer code is
all automated.
• Navigate to the …\ext\ext-ejb\ directory
• Make sure your service.xml file is
formatted correctly
Generate Service Layer Code
1.
2.
3.
4.
Click Start  Run…
Type cmd and press Enter
Navigate to C:\Training\liferay\ext\ext-ejb\
Type ant build-service in the command prompt.
Generated Service Layer Results
portal-tables.sql Updated
•
•
As part of the auto generation, portal-tables.sql was updated to include our
new Book table
portal-tables.sql is located here:
…\ext\sql\portal-tables.sql
This was added to portal-tables.sql:
•
create table Book (
•
bookId VARCHAR(75) not null primary key,
companyId VARCHAR(75) not null,
groupId VARCHAR(75) not null,
userId VARCHAR(75) not null,
createDate DATE null,
modifiedDate DATE null,
title VARCHAR(75) null
);
•
Remember to click Refresh on the “ext” directory after running build-service
to see the newly generated files!
Update our database called “training”
1. Click Start  Run…
2. Type cmd and press Enter
3. Type mysql and press Enter
4. Type use training; and press Enter
5. Type show tables; and press Enter
Confirm that the “Book” table does not exist yet
Updating Our Database
• Copy the generate SQL code:
create table Book (
bookId VARCHAR(75) not null primary key,
companyId VARCHAR(75) not null,
groupId VARCHAR(75) not null,
userId VARCHAR(75) not null,
createDate DATE null,
modifiedDate DATE null,
title VARCHAR(75) null
);
• Paste it into the Cmd prompt
Confirm the Update
•
Type show tables; and press Enter
Confirm that the “Book” table exist now
Creating the Service Layer Class
• Navigate to:
C:\Training\liferay\ext\ext-ejb\src\com\ext\portlet\library\service\impl\
• Open BookLocalServiceImpl.java
• We are going to add the database insert
method to this service layer class.
BookLocalServiceImpl.java Content
package com.ext.portlet.library.service.impl;
import java.util.Date;
import com.ext.portlet.library.model.Book;
import com.ext.portlet.library.service.persistence.BookUtil;
import com.liferay.counter.service.CounterLocalServiceUtil;
import com.liferay.portal.PortalException;
import com.liferay.portal.SystemException;
import com.ext.portlet.library.service.BookLocalService;
public class BookLocalServiceImpl implements BookLocalService {
public Book addBook(String userId, String title) throws PortalException, SystemException {
Book book = BookUtil.create(Long.toString(CounterLocalServiceUtil.increment(Book.class.getName())));
Date now = new Date();
book.setCreateDate(now);
book.setModifiedDate(now);
book.setUserId(userId);
book.setTitle(title);
return BookUtil.update(book);
}
}
Regenerate Service Layer Code
1.
2.
3.
4.
5.
The wrapper classes have been generated.
Regenerated Service Layer Results
Deploy the Files to Tomcat
Deploy files to Tomcat once you are finished
• Open up a cmd prompt
– Click “Start”, “Run” and then type “cmd”
• Navigate to your ext directory and then
type “ant deploy”
• …\ext>ant deploy
Implement Event Handler
This method will add a book to the Library, using the Library Service.
It will also create confirmation and error messages as appropriate.
Modify BookBean.java:
BookBean.java Content
package com.ext.portlet.library.ui;
import java.util.ArrayList;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import com.ext.portlet.library.service.BookLocalServiceUtil;
public class BookBean {
public String getTitle() {
return _title;
}
public void setTitle(String title) {
_title = title;
}
public void addBook(ActionEvent actionEvent) {
// clear the title
FacesContext facesContext = FacesContext.getCurrentInstance();
try {
BookLocalServiceUtil.addBook(facesContext.getExternalContext().getRemoteUser(), getTitle());
}
catch (Exception e) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error adding
book.", e.toString());
facesContext.addMessage(null, message);
e.printStackTrace();
return;
}
FacesMessage message = new FacesMessage(getTitle() + " was added successfully.");
// null signifies that this message is not intended for any ui component
// clear the title
setTitle("");
}
public String displayBooks() {
return "success";
}
private String _title;
}
•
•
•
•
Compile
Deploy
Refresh
Verify
Final Steps
1. Restart Tomcat
2. Open up a new browser and type
http://localhost:8080
LOGIN: [email protected]
PASSWORD: test
Verify the data in the database
1. Click Start  Run…
2. Type cmd and press Enter
3. Type mysql and press Enter
4. Type use training; and press Enter
5. Type select * from book; and press Enter
Checkpoint
• Update the existing JSP files to use the
generated Service and Persistence Layer
Classes
• Added a book title in the JSF Portlet
• Confirmed that the book title was added
successfully in to the database
Retrieving Records
• Retrieving records from the data base will
include updating a Service Layer Class
and regenerating the wrapper classes
• We will add a getAll() method to
• Regenerate the Service and Persistence
Layer classes
• We will update display_books.jsp to
retrieve and display the book title records
• Add a getAll() method
public List getAll()
throws PortalException, SystemException {
return BookUtil.findAll();
}
• import java.util.List;
• Regenerate the Service Layer to create a
wrapper class for getAll()
BookLocalServiceImpl.getAll()
In …/ext/ext-ejb, modify
com.ext.portlet.library.service.impl.BookLocalServiceImpl
BookLocalServiceImpl.java Content
package com.ext.portlet.library.service.impl;
import java.util.Date;
import com.ext.portlet.library.model.Book;
import com.ext.portlet.library.service.persistence.BookUtil;
import com.liferay.counter.service.CounterLocalServiceUtil;
import com.liferay.portal.PortalException;
import com.liferay.portal.SystemException;
import com.ext.portlet.library.service.BookLocalService;
public class BookLocalServiceImpl implements BookLocalService {
public Book addBook(String userId, String title) throws PortalException, SystemException {
Book book = BookUtil.create(Long.toString(CounterLocalServiceUtil.increment(Book.class.getName())));
Date now = new Date();
book.setCreateDate(now);
book.setModifiedDate(now);
book.setUserId(userId);
book.setTitle(title);
return BookUtil.update(book);
}
public List getAll() throws PortalException, SystemException {
return BookUtil.findAll();
}
}
Regenerate Service Layer Code
1.
2.
3.
4.
5.
The wrapper classes have been generated.
Regenerated Service Layer Results
•
•
•
•
Compile
Deploy
Refresh
Verify
Add BookBean.getAllBooks()
Modify BookBean.java:
BookBean.java Content
package com.ext.portlet.library.ui;
import java.util.ArrayList;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import com.ext.portlet.library.service.BookLocalServiceUtil;
public class BookBean {
public String getTitle() {
return _title;
}
public void setTitle(String title) {
_title = title;
}
public void addBook(ActionEvent actionEvent) {
// clear the title
FacesContext facesContext = FacesContext.getCurrentInstance();
try {
BookLocalServiceUtil.addBook(facesContext.getExternalContext().getRemoteUser(), getTitle());
}
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error adding
book.", e.toString());
e.printStackTrace();
return;
}
FacesMessage message = new FacesMessage(getTitle() + " was added successfully.");
// null signifies that this message is not intended for any ui component
// clear the title
setTitle("");
}
public String displayBooks() {
return "success";
}
public List getAllBooks() {
List books = new ArrayList();
try {
books = BookLocalServiceUtil.getAll();
}
}
return books;
}
private String _title;
}
•
•
•
•
Compile
Deploy
Refresh
Verify
display_books.jsp updates
Add presentation logic to display the book
Modify
…/portlets/library_jsf_portlet.war/display_b
ooks.jsp:
display_books.jsp updates
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<f:view>
<h1>
Display Books
</h1>
<h:dataTable
headerClass="portlet-section-header"
rowClasses="portlet-section-body,portlet-section-header-alternate"
value="#{book.allBooks}"
var="bookItem">
<h:column>
<f:facet name="header">
<h:outputText value="Title"/>
</f:facet>
<h:outputText value="#{bookItem.title}"/>
</h:column>
display_books.jsp HTML code
<h:column>
<h:outputText value="User
ID"/>
</f:facet>
<h:outputText value="#{bookItem.userId}"/>
</h:column>
<h:column>
<h:outputText value="Create
Date"/>
</f:facet>
<h:outputText value="#{bookItem.createDate}">
<f:convertDateTime type="both" dateStyle="short"
timeStyle="short"/>
</h:outputText>
</h:column>
</h:dataTable>
<br/>
<br/>
<h:form>
<h:commandButton action="back" value="Back"/>
</h:form>
•
•
•
•
Compile
Deploy
Refresh
Verify
Final Steps
1. Restart Tomcat
2. Open up a new browser and type
http://localhost:8080
LOGIN: [email protected]
PASSWORD: test
Review Key Concepts
• Create your table structure in service.xml
• Generate Service and Persistence Layer
Classes with Ant’s Build-Service
• Add methods to the Impl Service Class to
generate a wrapper method in the Util
Class
• Implement in BookBean.java
• Add code in your JSP file to display data
Revision History
Jerry Niu
9/7/2006-9/11/2006
- Slide create and updates
Scott Lee
10/30/2006
- updated slides to include permissions fields in service.xml
Scott Lee
12/9/2006
- corrected code for success.jsp
01/17/2007
- Convert for JSF
James Min

JSF Portlet Database Interaction Copyright © 2000-2006 Liferay, Inc. All Rights Reserved.

Transcription

Similar documents