Problems with content type in creation with DFS

Hello, I've got a problem when creating a new document of type txt.

I have read that i have to query the DM_FORMAT table using DQL. Everything OK till here. I also have read that there is a class called IDfFormatRecognizer for DFC programming which gives the translation from dos extension to documentum formats. Now I've got two questions.

1º - As I can see, with txt dos extension, for example, there are two associated documentum formats like 'TEXT' and 'CRTEXT'. Which one to I have to use? With different extensions there are even more formats. How Could I know the correct format to use? This could be done using the DfFormatRecognizer. And here comes my 2º question.

2º- Is there any class or something to recognize the format automatically as in DFC with DfFormatRecognizer class?

Thank you very much.

PS: I tried creating the file without A_CONTENT_TYPE attribute but it doesn't recognize the format automatically as it does in IDC. Correct me if I'm wrong.

PS2: Documentum 6.5, DFS, java.

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Comments

Inolte

As I read before, I built the QueryService client to make a query to the database remotelly asking the internal format of a given dos extension.

This query gives me 10 results (for 'txt' dos extension). What can I do to use the right format? Is there any way to identify the correct format? Or it doesn't matter the format I use?? I guess I should use the more suitable format but I don't know how to do this.

Any clue?

Thank you again.

prabhu

The logic behind DfFormatRecognizer is simple. It just takes the list of suggested formats for a given dos extension and returns the first value in the list as the default suggested format.

So if you want to implement the same in DFS. Proceed with the query and use the first value in the result set as the format for the document. I guess this works same as DfFormatRecognizer. Not sure if there is a similar class exist in DFS.

Inolte

What I did was to set up a properties file with value pair entries with the dos extensions and de required documentum formats. I read the extension of a the file and after that i set the a_content_type after reading the properties file and the corresponding format. It's a little bit messy but I guess there is not another way to do it properlly.

In DFS we have got the ServiceQuery service and here we can execute DQL queries (e.g. select name from dm_format where dos_extension='txt'). It could be another approach but I prefer reading locally the properties file not to overload the network.

Thank you.