- Home
- Products
- Integration
- Tutorial
- Barcode FAQ
- Purchase
- Company
vb.net generate 2d barcode TAPESTRY in Java
CHAPTER 7 TAPESTRY Creating PDF-417 2d Barcode In Java Using Barcode drawer for Java Control to generate, create PDF-417 2d barcode image in Java applications. www.OnBarcode.comPDF417 Reader In Java Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications. www.OnBarcode.comTable 7-1. Tapestry JARs and Dependencies
Make Code 128 Code Set B In Java Using Barcode maker for Java Control to generate, create Code 128 Code Set C image in Java applications. www.OnBarcode.comData Matrix 2d Barcode Generator In Java Using Barcode drawer for Java Control to generate, create Data Matrix 2d barcode image in Java applications. www.OnBarcode.comFile
Universal Product Code Version A Drawer In Java Using Barcode printer for Java Control to generate, create UPCA image in Java applications. www.OnBarcode.comQR Creator In Java Using Barcode encoder for Java Control to generate, create Denso QR Bar Code image in Java applications. www.OnBarcode.comtapestry-4.0.jar tapestry-annotations-4.0.jar tapestry-contrib-4.0.jar hivemind-1.1.jar hivemind-lib-1.1.jar commons-codec-1.3.jar commons-fileupload-1.0.jar commons-logging-1.0.4.jar javassist-3.0.jar ognl-2.6.7.jar oro-2.0.8.jar Data Matrix Printer In Java Using Barcode generation for Java Control to generate, create Data Matrix image in Java applications. www.OnBarcode.com2/5 Standard Creation In Java Using Barcode creation for Java Control to generate, create 2 of 5 Standard image in Java applications. www.OnBarcode.comDescription
Making PDF 417 In None Using Barcode printer for Online Control to generate, create PDF 417 image in Online applications. www.OnBarcode.comPDF-417 2d Barcode Creator In Visual C#.NET Using Barcode encoder for Visual Studio .NET Control to generate, create PDF 417 image in Visual Studio .NET applications. www.OnBarcode.comTapestry Core Java 5 annotation support Community contributed components Services and configuration microkernel core Common HiveMind functionality Encoder implementations File uploading and multipart support Logging package Reflection and bytecode manipulation Object-Graph Navigation Language Regular expression package Code 128 Code Set B Printer In None Using Barcode maker for Office Word Control to generate, create Code 128B image in Microsoft Word applications. www.OnBarcode.comEAN-13 Supplement 5 Recognizer In Visual Basic .NET Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET applications. www.OnBarcode.comHTML Page
EAN 128 Encoder In VS .NET Using Barcode generator for Reporting Service Control to generate, create UCC-128 image in Reporting Service applications. www.OnBarcode.comEncode UCC-128 In Visual Basic .NET Using Barcode drawer for .NET Control to generate, create EAN128 image in VS .NET applications. www.OnBarcode.comLet s start by creating a simple HTML page for our application. Tapestry page templates are regular HTML documents decorated with tags and attributes for Tapestry to replace dynamically at runtime. The initial template for our simple application is shown in Listing 7-1. Listing 7-1. Tapestry Time HTML Template (Home.html) <html> <body> <h1>Tapestry Time</h1> The current time is <span jwcid="time">high noon</span>! </body> </html> Save this page template as Home.html in the context directory. Like any good framework, Tapestry follows the convention-over-configuration philosophy. At start-up time Tapestry will look for a page named Home and render it. (You can override this default behavior, but this is an easy convention to follow, and most Tapestry applications do so it is easy to find an application main page easily.) The HTML document looks like any other HTML document. It is viable in any compliant Web browser and more importantly, editable in any WYSIWYG HTML editor such as HomeSite or Macromedia s Dreamweaver as shown in Figure 7-2. Data Matrix 2d Barcode Drawer In VB.NET Using Barcode generation for .NET framework Control to generate, create Data Matrix 2d barcode image in .NET applications. www.OnBarcode.comDataMatrix Maker In None Using Barcode generator for Word Control to generate, create Data Matrix image in Word applications. www.OnBarcode.comCHAPTER 7 TAPESTRY
QR Code ISO/IEC18004 Maker In VB.NET Using Barcode creation for .NET framework Control to generate, create QR Code JIS X 0510 image in VS .NET applications. www.OnBarcode.comBarcode Maker In VB.NET Using Barcode generator for Visual Studio .NET Control to generate, create Barcode image in .NET framework applications. www.OnBarcode.comFigure 7-2. Simple HTML page in a WYSIWYG editor In the Home.html template we use a span tag with an attribute jwcid attribute which stands for Java Web Component Id. There are two ways to declare Tapestry components in an HTML template: explicitly as shown in the example or implicitly by prefixing the component name with @. Implicit declarations are like anonymous inner classes in Java; you are declaring and using a component on the spot. Since we are using an explicit declaration, the meat and potatoes of the components must be defined somewhere else so that we can refer to it by name. Create USS-128 In Objective-C Using Barcode encoder for iPhone Control to generate, create GS1-128 image in iPhone applications. www.OnBarcode.comMaking Code 39 Full ASCII In Java Using Barcode generation for Android Control to generate, create Code 3 of 9 image in Android applications. www.OnBarcode.comThe Java Code
The code that will provide the backing for the component is contained in the file Home.java. The Home class provides one simple method called getTime, which returns a new java.util. Date object as shown in Listing 7-2. Listing 7-2. Java Class Extending BasePage, Which Implements IPage package com.integrallis.time; import java.util.Date; import org.apache.tapestry.html.BasePage; CHAPTER 7 TAPESTRY
public abstract class Home extends BasePage { public Date getTime() { return new Date(); } } This abstract class extends the Tapestry BasePage abstract class, which in turn implements the IPage interface. We will learn more about both of these classes and interfaces as we work through the sample. Figure 7-3 shows a partial class hierarchy for the BasePage class. Remember, in Tapestry everything is a component, including pages. Figure 7-3. BasePage class hierarchy
Page XML Descriptor
The page specification file is an XML file with the extension page . Remember, pages are a special type of Tapestry component, and this is the configuration file for the Home page component of our application. Pages can contain components, and in this case our page contains one component of type Insert. The Insert component is one of many built-in Tapestry components. Insert gives you the ability to insert text dynamically in the HTML response with the option of filtering special characters or formatting by using a java.text.Format instance. Listing 7-3 shows the contents of the Home.page file. Listing 7-3. The Page Specification XML File (Home.page) < xml version="1.0" > <!DOCTYPE page-specification PUBLIC "-//Apache Software Foundation//Tapestry Specification 4.0//EN" "http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd"> <page-specification class="com.integrallis.time.Home"> <component id="time" type="Insert"> <binding name="value" value="ognl:time"/> </component> </page-specification> CHAPTER 7 TAPESTRY
The DTD located at http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd gives us a clue as to what types of elements can be configured via XML in Tapestry. Figure 7-4 shows a graphical depiction of the page-specification element showing the detail of the component element. Figure 7-4. DTD definition for the page-specification element The Home.page file specifies that: This is the page specification for a Home page as deduced by the name of the file Home.page, the associated Home.html template, and the class com.integrallis. time.Home as defined in the class attribute of the page-specification element. It defines one component with an id of time which is of type Insert. The component time binds the value of the expression ognl:time to the value of the component.
|
|