Re: Problem in editing PPTX

Hi guys
I am a little bit confused in my application. I expect a good advice from you geeks.
My application has a PPTX which acts as a template and I have to create a new PPT everytime by removing the place holders and adding my controls on its place. I am developing the application in java.
I have tried to develop  it by implementing the openxml4j api, but it is not satisfying my needs.
So what I am planning is, using java:
1)   Rename the file to Sample.zip            [Consider Sample.pptx is our template]

2)   Unzip the Sample.zip

3)   Edit whichever files to edit.

4)   Zip the entire directory structure to Sample.zip

5)   Rename it to Output.pptx

6)   Convert it to Output.ppt

Is this aproach a correct one? I have done the steps 1 and 2 successfully. But I am confused on how to complete step 3. How can I edit these xml files using java. From where i can get some help. If I am updating the contents of the powerpoint, in addition to the slide1.xml,slide2.xml... what all xml files I need to edit. Also how can we convert pptx to ppt(step 6)? Is there anyother java api that suits this scenario?
Please answer

Hi,
               
Here are few of the Java packages that provide classes for modifying XML:

javax.xml.parsers.*
javax.xml. transform.*
org.xml.sax.*
org.w3c.dom.*

These packages will be available as a part of JDK.
 

An example for modifying XML using few classes from above packages:
               
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();           
                     
File contentTypeXML = new File(extractToFolder + "\\" + "[Content_Types].xml");
           
Document doc = docBuilder.parse (contentTypeXML);                                
Element rootElement =  doc.getDocumentElement();                      
Element override = (Element) doc.createElement("Override");
int pathLengthToBeIgnored = extractToFolder.length();           
----
----
                
 override.setAttribute("PartName", folderForHeader + "/header2.xml");
override.setAttribute("ContentType","application/vnd.openxmlformats-officedocument.wordprocessingml.header+xml");
   
 rootElement.appendChild(override);

Mallika

Hi mallika
But you know we have to edit more than one files. And i hav to update all the contents of the slides. Is their any third party api which deals with this openoffice xml. (other than openxml4j)

Hi,

I guess no such API is there.

You can go through the following links.

http://blog.hvorom.dk/post/2008/03/Apache---Java-API-for-Open-XML.aspx

http://channel9.msdn.com/ShowPost.aspx?PostID=292715

http://www.theserverside.com/discussions/thread.tss?thread_id=44813

Mallika

ya you are correct. there no such api now
openxml4j doesnt have that much capabilities to handle the above situation
apache is yet to release
and docx is for word only.
one last word...
is this possible on a windows platform.
I mean microsoft technology (C#)

Hi,

In .Net framework(3.0 and 3.5) there is one API called System.IO.Packaging.
Using C# and that API you can programmataically edit any office 2007 document(docx,xlsx,pptx).
That means you can edit any xml file also.

Mallika

Hello,

 i started to work with the openxml4j api. Its no problem to display the package parts, relationships etc. of an presentationml file with that api. But i dont have a chance to edit the xml files inside the package.

So the api (to time)  is worthless for my jobs.

Flip

docx4j (nightlies from January 16 or later), now provides a JAXB representation of the contents of pptx xml parts.

Hello there,

I am presently having the same requirement which is little urgent.

Need your help.

I exaclty follow the approach suggested but it's very early to proceed for me as i just updated it manully.

Could you please let me know if this approach works fine and any solution to that could be highly appreciated.

Best Regards

Sayed