Workflows

[loktamu]

I am a beginner and learning how can I implement basic workflows engine in Java(3 months project). I can use MySQL as a back-end database.

[Eranga]

Can you little more explain about workflow, what you mean there.

[loktamu]

Sorry for that. It is just in research phase now. For the time being I just want to connect many java applications in such a waya that the output from one independent java application will be taken as input by the another java application(only string, for now) and it continues like workflows in BPM.
For example,
input1--->PRG1.java--->output1 input2--->PRG2.java--->output2 input3--->PRG3.java--->output3
where input2=output1, input3=output2, all are strings only to begin with.
Hope I am much clearer now.

This is a basic of the project.

[Eranga]

In that way, I think you want to pass values from one class to another. If so where are you stuck with.

[loktamu]

Thank you for the reply. Still I have got some doubt. The string output from one desktop application should be first stored into MySQL. And when I run the second application(independently) it should fetch the previous output from MySQL which would be its input, and process it and save the string output back into MySQL(another row, or ??). This is just a general idea. I am trying to mimic process workflows.(I might not be right, though). I am still working on it.

[Eranga]

Yes it's possible, store data in a database and use them when you want. But actually you need to do it, if you want to use data later. If you want to use such data at the same time, directly pass them to another class. I hope you know about objects.