How to extend PlainDocument for an extremely large Jtextarea?
I'm trying to extend the PlainDocument class in order to use an external file for saving an extremely large document that's being scrolled in a jtextarea. The document is read-only after it's created. My class uses its own insertString to capture the document as it's created, and sets the length to be passed back by the getLength method. However, the getText requests seem to ignore this length, and only ask for the first character of the document. Any ideas on how to get this to work correctly, or is there a better approach to the general problem?
Thanks,
Hartley
Some more background on this is that when running without the document model, it ran out of heap space. The heap space required was about 4 times the size of the total length I was trying to display, and from research, I think that this is due to the default gap management in the document, keeping possibly multip[le copies of the individual strings that I was appeanding into the text area. I'm aware that I could split the large input into some individual segments, but the user requirement is to be able to search the document for specific text occurrences, which would not be possible with one search if there were multiple segments. The obvious solution seemed to be the use of the PlainDocument to manage the storage myself. I did a lot of searching for examples of how to use it, but they all seemed to be limited to invoking the remove(...) method to cut down on the size, or to do some sort of editing as lines were inserted. I've actually tried several different ways of handling the getText and insertString methods, and tracing the arguments they're called with. I just can't figure out why the basic theory of what I'm doing doesn't work - there's more involved but I can't find out what it is.
Hartley
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Apple's step by step support document for this is here:
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3 2 NESTED LOOPS
4 3 NESTED LOOPS
5 4 NESTED LOOPS
6 5 NESTED LOOPS
7 6 NESTED LOOPS
8 7 NESTED LOOPS
9 8 NESTED LOOPS
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14 13 NESTED LOOPS
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ie
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