JAVA Library for reading, writing & merging AFP (Advanced Function Presentation) Files. See https://en.wikipedia.org/wiki/Advanced_Function_Presentation
afplib provides a low level API to transform AFP files, i.e. structured fields, triplets, ... into JAVA objects and vice versa. To make use of it you need to know MO:DCA (see http://afpcinc.org/wp-content/uploads/2014/04/modca08.pdf). afplib is build on top of EMF (Eclipse Modeling Framework) - http://www.eclipse.org/modeling/emf/
Home: http://afplib.org
Create a new maven project (https://maven.apache.org)
Use a pom like this:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.afplib.samples</groupId>
<artifactId>HelloWorld</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.afplib</groupId>
<artifactId>afplib</artifactId>
<version>0.0.9</version>
</dependency>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>org.eclipse.emf.ecore</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>org.eclipse.emf.common</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>org.eclipse.emf.ecore.xmi</artifactId>
<version>2.10.1</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
</project>Create a Hello World App
import java.io.FileOutputStream;
import java.io.IOException;
import org.afplib.afplib.AfplibFactory;
import org.afplib.afplib.BDT;
import org.afplib.afplib.Comment;
import org.afplib.afplib.EDT;
import org.afplib.io.AfpOutputStream;
public class HelloWorld {
public static void main(String[] args) {
try (AfpOutputStream aout = new AfpOutputStream(new FileOutputStream("hello.afp"))) {
BDT bdt = AfplibFactory.eINSTANCE.createBDT();
bdt.setDocName("HELLOWLD");
Comment comment = AfplibFactory.eINSTANCE.createComment();
comment.setComment("My first AFPLib Program");
bdt.getTriplets().add(comment);
aout.writeStructuredField(bdt);
EDT edt = AfplibFactory.eINSTANCE.createEDT();
edt.setDocName("HELLOWLD");
aout.writeStructuredField(edt);
} catch (IOException e) {
e.printStackTrace();
}
}
}Have a look on the definition of Begin Document (BDT) - MOD:CA reference page 128:
and afplib's representation of it:
...
public interface BDT extends SF {
String getDocName();
void setDocName(String value);
Integer getReserved();
void setReserved(Integer value);
EList<Triplet> getTriplets();
} // BDTafplib frees you from creating the structured field introducer (ID, calculating structured field length), and knowing which attributes at what position and length a structured field has.
Consider e.g. following file:
5A002BD3A8A8000000C8C5D3D3D6E6D3C400001965D4A840868999A2A340C1C6D7D3898240D79996879981945A0010D3A9A8000001C8C5D3D3D6E6D3C4
or broken down:
| hex code | description |
|---|---|
| 5A 00 2B | magic byte (5a) and length |
| D3 A8 A8 00 00 00 | id (BDT) and flags |
| C8 C5 D3 D3 D6 E6 D3 C4 00 00 | DocName = HELLOWLD (EBCDIC) |
| 19 65 | Triplet Length and ID (Comment) |
| D4 A8 40 86 89 99 A2 A3 40 C1 C6 D7 D3 89 82 40 D7 99 96 87 99 81 94 | My first AFPLib Program (EBCDIC) |
| 5A 00 10 | magic byte and length |
| D3 A9 A8 00 00 01 | id (EDT) and flags |
| C8 C5 D3 D3 D6 E6 D3 C4 | DocName = HELLOWLD (EBCDIC) |
afplib transforms this binary data into the following:
try(AfpInputStream ain = new AfpInputStream(new FileInputStream("hello.afp"))) {
BDT bdt = (BDT) ain.readStructuredField();
EDT edt = (EDT) ain.readStructuredField();
System.out.println(bdt.getDocName());
System.out.println(bdt.getReserved());
System.out.println(bdt.getTriplets().size());
System.out.println(((Comment)bdt.getTriplets().get(0)).getComment());
System.out.println(edt.getDocName());
} catch (IOException e) {
e.printStackTrace();
}Output:
HELLOWLD # System.out.println(bdt.getDocName());
0 # System.out.println(bdt.getReserved());
1 # System.out.println(bdt.getTriplets().size());
My first AFPLib Program # System.out.println(((Comment)bdt.getTriplets().get(0)).getComment());
HELLOWLD # System.out.println(edt.getDocName());
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