Examples of lupos.datastructures.dbmergesortedds.DiskCollection

Package lupos.datastructures.dbmergesortedds

Examples of lupos.datastructures.dbmergesortedds.DiskCollection

lupos.datastructures.dbmergesortedds.DiskCollection
This class implements a collection, which stores its entries on disk and not in main memory. This class supports storing big data sets, which do not fit into main memory any more. DiskCollection adds entries fast (to the end) and provides a fast implementation to retrieve the iterator of the entries besides the fact that all is stored and read from disk. Most of the other methods are rather slow. @author groppe


  @SuppressWarnings({ "rawtypes", "unchecked" })
  public void writeLuposCollection(final Collection t) throws IOException {
    if (t.size() > 200) {
      this.os.write(255);
      final DiskCollection dc;
      if (t.size() > 0) {
        dc = new DiskCollection(t.iterator().next().getClass());
      } else {
        dc = new DiskCollection(Object.class);
      }
      dc.addAll(t);
      dc.writeLuposObject(this);
    } else {
      this.os.write(t.size());
      if (t.size() > 0) {
        Registration.serializeId(t.iterator().next(), this);
        for (final Object o : t) {

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  @SuppressWarnings({ "unchecked", "rawtypes" })
  public final static void writeLuposCollection(final Collection t, final OutputStream os) throws IOException {
    if (t.size() > 200) {
      os.write(255);
      final DiskCollection dc;
      if (t.size() > 0) {
        dc = new DiskCollection(t.iterator().next().getClass());
      } else {
        dc = new DiskCollection(Object.class);
      }
      dc.addAll(t);
      dc.writeLuposObject(os);
    } else {
      os.write(t.size());
      if (t.size() > 0) {
        Registration.serializeId(t.iterator().next(), os);
        for (final Object o : t) {

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Related Classes of lupos.datastructures.dbmergesortedds.DiskCollection

lupos.io.helper.OutHelper

lupos.io.LuposObjectInputStream

lupos.io.LuposObjectOutputStream

lupos.io.LuposObjectOutputStreamWithoutWritingHeader

java.io.BufferedOutputStream

java.io.FileOutputStream

java.io.FileInputStream

java.io.BufferedInputStream

java.io.File

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