Can ora:readFile not take a hard-coded argument?
Hi:
I have a need to pass in a different filename to ora:readFile(<dynamic file name>).
I tried to do the following and it does not like it:
<copy>
<from expression="ora:readFile(concat('file:///', bpws:getVariableData('Variable_File_Name')))"/>
<to variable="Variable_File_Contents"/>
</copy>
where Variable_File_Name may hold string like d:/myfile.txt or d:/yourfile.txt etc.
Can someone help?
AJ
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Why dont we like hard coded literald
Hello Abapler,
I am planning a workshop for developers concerning guidelines. They shall use less hard coding.
But... Why ?
It is clear for me in cases of translation. But what other reasons are there.
Do you have any source, ideas, examples ?
We are working with classic Abap and little OO
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Simone>
Paul Chapman wrote:
> Also, if you have to change it and it's used in more then one place, you only need change it in one.
And if you used hard coding you will have to change it not only in several places but in all places. And most likely you will forget to change one place. The results can be strange...
One thing I would like to add: Most likely your developers will produce bugs once in a while. Or if they are perfect someone will try to use their programs for something they were not developed for. In the end you (or them) will have to debug the source code. And it's helping a lot if you can just search for a constant by it's name. If you just see in the code of somebody else that a 'magic' parameter is set to 42 you will have a really bad time to find all other places where 42 is used with the same intention.
But this are all reasons that are not restricted to ABAP. It's true in every programming language. And there is one easy way to teach a programmer not to use hard coding whenever he can avoid it without major performance drawbacks: Just let him do maintainance for some weeks...
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