Package lupos.datastructures.buffermanager

Examples of lupos.datastructures.buffermanager.ContinousPagesOutputStream

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    final int index = (int) (addressKey % PageManager.getDefaultPageSize());
    try {
      final PageAddress pageAddress = new PageAddress(0, this.keysFilename);
      final byte[] page = BufferManager.getBufferManager().getPage(this.TABLEPAGESIZE, pageAddress);

      final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.keysFilename, false, false), index);
      OutHelper.writeLuposLong(addressOfValues, out);
      OutHelper.writeLuposLong(numberOfKeyElements, out);
      OutHelper.writeLuposLong(addressOfNextKey, out);
      Registration.serializeWithoutId(key, out);
      out.close();
      BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
    } catch (final IOException e) {
      System.err.println(e);
      e.printStackTrace();
    }
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    final int index = (int) (addressElement % PageManager.getDefaultPageSize());
    try {
      final PageAddress pageAddress = new PageAddress(0, this.valuesFilename);
      final byte[] page = BufferManager.getBufferManager().getPage(this.TABLEPAGESIZE, pageAddress);

      final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
      OutHelper.writeLuposLong(numberOfElements, out);
      OutHelper.writeLuposLong(addressOfNextElement, out);
      Registration.serializeWithoutId(element, out);
      out.close();
      BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
    } catch (final IOException e) {
      System.err.println(e);
      e.printStackTrace();
    }
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    return true;
  }

  protected final void openOutputStream() throws IOException {
    if(this.out==null){
      this.out = new ContinousPagesOutputStream((int)(this.endOfCollection / PageManager.getDefaultPageSize()), this.pageManager, false, (int)(this.endOfCollection % PageManager.getDefaultPageSize()));
    }
  }
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    final int index = (int) (addressKey % PageManager.getDefaultPageSize());
    try {
      final PageAddress pageAddress = new PageAddress(0, this.keysFilename);
      final byte[] page = BufferManager.getBufferManager().getPage(this.TABLEPAGESIZE, pageAddress);

      final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.keysFilename, false, false), index);
      OutHelper.writeLuposLong(addressOfValues, out);
      out.close();
      BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
    } catch (final IOException e) {
      System.err.println(e);
      e.printStackTrace();
    }
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    final int index = (int) (addressElement % PageManager.getDefaultPageSize());
    try {
      final PageAddress pageAddress = new PageAddress(0, this.valuesFilename);
      final byte[] page = BufferManager.getBufferManager().getPage(this.TABLEPAGESIZE, pageAddress);

      final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
      OutHelper.writeLuposLong(numberOfElements, out);
      out.close();
      BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
    } catch (final IOException e) {
      System.err.println(e);
      e.printStackTrace();
    }
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      final long addressOfValues = InputHelper.readLuposLong(in);
      long numberOfKeyElements = InputHelper.readLuposLong(in);
      in.close();
      if(numberOfKeyElements>0){
        numberOfKeyElements--;
        final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.keysFilename, false, false), index);
        OutHelper.writeLuposLong(addressOfValues, out);
        OutHelper.writeLuposLong(numberOfKeyElements, out);
        out.close();
        BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
        return true;
      }
    } catch (final IOException e) {
      System.err.println(e);
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      final InputStream in = new ContinousPagesInputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
      long numberOfElements = InputHelper.readLuposLong(in);
      in.close();
      if(numberOfElements>0){
        numberOfElements--;
        final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
        OutHelper.writeLuposLong(numberOfElements, out);
        out.close();
        BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
        return true;
      }
    } catch (final IOException e) {
      System.err.println(e);
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      final InputStream in = new ContinousPagesInputStream(pagenumber, new PageManager(this.keysFilename, false, false), index);
      final long addressOfValues = InputHelper.readLuposLong(in);
      final long numberOfKeyElements = InputHelper.readLuposLong(in);
      in.close();
      if(numberOfKeyElements>0){
        final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.keysFilename, false, false), index);
        OutHelper.writeLuposLong(addressOfValues, out);
        OutHelper.writeLuposLong(0, out);
        out.close();
        BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
        return numberOfKeyElements;
      }
    } catch (final IOException e) {
      System.err.println(e);
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      final InputStream in = new ContinousPagesInputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
      final long numberOfElements = InputHelper.readLuposLong(in);
      in.close();
      if(numberOfElements>0){
        final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
        OutHelper.writeLuposLong(0, out);
        out.close();
        BufferManager.getBufferManager().modifyPage(this.TABLEPAGESIZE, pageAddress, page);
        return numberOfElements;
      }
    } catch (final IOException e) {
      System.err.println(e);
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  private final void storeNumberOfElements(final long numberOfElements, final long address){
    final int pagenumber = (int) (address / PageManager.getDefaultPageSize());
    final int index = (int) (address % PageManager.getDefaultPageSize());
    try {
      final OutputStream out = new ContinousPagesOutputStream(pagenumber, new PageManager(this.valuesFilename, false, false), index);
      OutHelper.writeLuposLong(numberOfElements, out); // currently one element inside!
      out.close();
    } catch (final IOException e) {
      System.err.println(e);
      e.printStackTrace();
    }
  }
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Related Classes of lupos.datastructures.buffermanager.ContinousPagesOutputStream

  • lupos.datastructures.paged_map.PagedHashMultiMap
  • lupos.datastructures.paged_set.PagedHashMultiSet
  • lupos.datastructures.smallerinmemorylargerondisk.PagedCollection
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