Package org.apache.kahadb.page.PageFile

Examples of org.apache.kahadb.page.PageFile.PageWrite

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        if (pageId < 0) {
            throw new InvalidPageIOException("Page id is not valid", pageId);
        }

        // It might be a page this transaction has modified...
        PageWrite update = writes.get(pageId);
        if (update != null) {
            page.copy(update.getPage());
            return;
        }

        // We may be able to get it from the cache...
        Page<T> t = pageFile.getFromCache(pageId);
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        Long key = page.getPageId();

        // how much pages we have for this transaction
        size = writes.size() * pageFile.getPageSize();

        PageWrite write;

        if (size > maxTransactionSize) {
            if (tmpFile == null) {
                tmpFile = new RandomAccessFile(getTempFile(), "rw");
            }
            long location = nextLocation;
            tmpFile.seek(nextLocation);
            tmpFile.write(data);
            nextLocation = location + data.length;
            write = new PageWrite(page, location, data.length, getTempFile());
        } else {
            write = new PageWrite(page, data);
        }
        writes.put(key, write);
    }
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        if (pageId < 0) {
            throw new InvalidPageIOException("Page id is not valid", pageId);
        }

        // It might be a page this transaction has modified...
        PageWrite update = writes.get(pageId);
        if (update != null) {
            page.copy(update.getPage());
            return;
        }

        // We may be able to get it from the cache...
        Page<T> t = pageFile.getFromCache(pageId);
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    private void write(final Page page, byte[] data) throws IOException {
        Long key = page.getPageId();
        // TODO: if a large update transaction is in progress, we may want to move
        // all the current updates to a temp file so that we don't keep using
        // up memory.
        writes.put(key, new PageWrite(page, data));       
    }  
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Related Classes of org.apache.kahadb.page.PageFile.PageWrite

  • org.apache.kahadb.page.Transaction
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