Re: Prototyping an interface in RPG

I didn't really understand what the "TextExtractionStrategy strategy" was
doing or how to do this in RPGLE. The fact that TextExtractionStrategy is
an interface, instead of a class, threw me. Maybe its just a declaration
and can be handled by the declaration as you've shown here. I'll just do
as best I can, code the calls, and deal with any invalid class errors I
happen to get. Thanks for the advice.





From: Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>
To: "RPG programming on the IBM i (AS/400 and iSeries)"
<rpg400-l@xxxxxxxxxxxx>,
Date: 03/05/2013 05:00 PM
Subject: Re: Prototyping an interface in RPG
Sent by: rpg400-l-bounces@xxxxxxxxxxxx



This is off the top of my head, and untested:

D TextExtractionStrategy...
D s O CLASS(*JAVA
D : 'com.itextpdf.text.pdf.parser-
D TextExtractionStrategy')

D strategy s like(TextExtractionStrategy)



On 3/5/2013 3:07 PM, darren@xxxxxxxxx wrote:

I'm trying to figure out how to handle a java interface type object in

RPG.

The example I'm trying to replicate in RPG is using iText and the
TextExtractionStrategy interface. How do I define an object to have the
TextExtractionStrategy object type. When I read the javadoc, it doesn't
give me any clues to what to set the class to or even if there is a
constructor to specify.

Here is the java code example that I'm trying to somewhat do within RPG.

I

get stuck trying to figure out how to define the "strategy" object. This
code snippet is supposed to extract text within a given area of a PDF and
is taken from the iText website:

PdfReader reader = new PdfReader(pdf);
PrintWriter out = new PrintWriter(new FileOutputStream(txt));
Rectangle rect = new Rectangle(70, 80, 420, 500);
RenderFilter filter = new RegionTextRenderFilter(rect);
TextExtractionStrategy strategy;
for (int i = 1; i <= reader.getNumberOfPages(); i++) {
strategy = new FilteredTextRenderListener(
new LocationTextExtractionStrategy(), filter);
out.println(PdfTextExtractor
.getTextFromPage(reader, i, strategy));
}
out.flush();out.close();

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