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ABAP /OO development knowledge WebDynpro for ABAP development knowledge Adobe Lifecycle Design knowledge
The BusinessGraphics UI element has been extended to include a new bindable property called imageData within Netweaver 7.02/7.20 version, so you do not need the some steps below. This new attribute imageData allows you to receive an XSTRING with the image data that is rendered by the IGS. This avoids the extra steps that you detail for getting direct access to the rendered IGS chart and makes it simple to integrate the IGS content into downloads and/or Adobe Forms.
Within WebDynpro development workbench, a Business Graphic UI element is already provided to access the IGS (Internet Graphic Service) server indirectly (via Background calling model), and then user can put data into this object via context node binding, and execute this application with correct business data, and then Business Graphic Element would displayed a business chart in Column Chart or Line Chart.In most WebDynpro for ABAP application, this UI Element is very useful for business chart presentation in WebDynpro application.
You would found some obvious flaws in some special cases using this standard UI element, the following problem are real cases: A) Customer wants to download this business chart, but it seems very very difficult for a Business Graphic element, how did you allowed a end user to download this picture which is generated via standard UI element ‘Business Graphic’ ? B) Customer wants to put these business charts into a PDF Interactive form, how did you extract this business chart from Business Graphic element, and convert it to a real picture file?
In some special cases, you can call the IGS API classes directly to generates a business chart but not using WebDynpro Business Graphic UI element, there business chart are generated automatically by background, more fast and efficient, and then you can convert these picture to XString type and storing them in ICM cache with a limit time, usually 20~30 minutes same with Web Application Session Lifecycle, and return a unique URL address to identify each picture, then you can link the URL of this business chart to a Image UI element in WebDynpro development workbench, if you want to delete these picture manually, a static method of class IF_HTTP_SERVER can be used to do it.
Create an ABAP Class, it is used to generate a business chart according to importing parameter, and return a unique URL, this URL is a combination of WebDynpro Application and path of picture is being stored.
In a WebDynpro program, create a new Image UI element, and link this ‘Source’ attribute to this generated URL, once business chart is generate in our ABAP Class, and Image UI element would display a picture according to the URL returned by this class.
GRAPHICS_IGS_ADMIN: Administration view of IGS running time. GRAPHICS_IGS_CE_TEST: an example of generate a business chart (Column Type). GRAPHICS_IGS_GUI_CE_DEMO: you can use this program to define you own description file of a business chart. (Type of business chart, Color, Dimension, Font Size, Picture Size and so on), this is a very good example to tell you how to build up a data structure for generating a business chart, please go through this program and thinking the following point before you start development:
Once you execute example program GRAPHICS_IGS_CE_TEST, you would see a business chart, this business chart is generated by IGS via API calling directly, you can get a returned picture file, and picture is stored with this table w3mimetabtype.
In previous example, you can get a business chart file, even it is a w3mimetabtype type, picture just is stored in this data type, so you have to convert it to a XString if you want to display this picture in WebDynpro application side, using the following step for conversion of picture file type and storage type.
you have generate a business chart with JPG file type, also it’s a XString type object, you can just put it in your WebDynpro with a URL Link UI element, once user click this link, then Internet Explorer would prompt a popup window to tell you open or just save this file to your local computer.Our solution is that displaying a business chart in an image UI element, and this picture also can be embedded into an Adobe Interactive Form
You can use SAP standard utility class CL_WD_RUNTIME_SERVICES to extract XString content, and then post it to the front-end internet browser, even you can use SAP standard function module to compress those pictures into one ZIP file.
In some WebDynpro applications, customer wants to download the PDF report with business chart, you can use Adobe Interactive Form UI element in a view, or you can create PDF form template and interface (ABAP Dictionary Type), and then generate a XString PDF file via call function module model.
This picture is an example to show business chart is embedded into a PDF form
Create a Graphic element within Form Object(Not in Form Interface!!!)
Set Graphic Type to ‘Graphic Reference’
In this step, PIC_A1A2 is a string type variable, the URL address of generate business chart is stored in this variable, so we can transfer the value to this graphic element via drag-and-drop PIC_A1A2 to input line.
The following attribute should be set for Image Field in PDF Form Designer: