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Java Forum / General / August 2006xml parsing.............
hi , i am having an XML file and i would like to append a node at to the document ................. i know you can use DOM to build the whole tree and then append to the root and then write to the file.........my question is this...............can we do this without re-writing the file each and every time..............??? like some appending to the xml file???? > i am having an XML file and i would like to append a node at to the > document ................. i know you can use DOM to build the whole > tree and then append to the root and then write to the file.........my > question is this...............can we do this without re-writing the > file each and every time..............??? like some appending to the > xml file???? Since appending to an XML file will make it invalid, then NO. Arne > > i am having an XML file and i would like to append a node at to the > > document ................. i know you can use DOM to build the whole [quoted text clipped - 6 lines] > > Arne so if i am having a very big XML file it tends to be a waste of time trying to add new elements......... > so if i am having a very big XML file it tends to be a waste of time > trying to add new elements......... If you have huge data that you need to update frequently, then XML is not a good choice for storage. Arne >> so if i am having a very big XML file it tends to be a waste of time >> trying to add new elements......... > > If you have huge data that you need to update frequently, then > XML is not a good choice for storage. Correction: If you have huge data that you need to update frequently, then a single XML file is not a good choice for storage. Arne you should know the struture of the XML file first so.........you must parse it any way before appanding something > hi , > [quoted text clipped - 4 lines] > file each and every time..............??? like some appending to the > xml file???? > hi , > [quoted text clipped - 4 lines] > file each and every time..............??? like some appending to the > xml file???? Castor can take away a lot of pains. http://www.castor.org/ > hi , > [quoted text clipped - 4 lines] > file each and every time..............??? like some appending to the > xml file???? The way to handle this is to not have the file be a complete XML document - in other words, leave out the xml declaration and the root element. Then you can append nodes all you want. Of course, in order to parse the file you need to contrive to add the missing root - this is easily done since parsers just want a character stream - you can use java.io.SequenceInputStream to combine a String representing the document root, the file of node data and a String representing the closing root element. For an even more complex example: http://www.xml.com/pub/a/2003/07/16/fragmentreader.html Bill > > hi , > > [quoted text clipped - 18 lines] > > Bill excellent idea! i really liked it.......... i shall try implementing it Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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