Examples of org.openrdf.sail.nativerdf.btree.BTree


      count = (int)removedTriplesCache.getRecordCount();
      updatedTriplesCache.storeRecords(removedTriplesCache);


      for (TripleIndex index : indexes) {
        BTree btree = index.getBTree();


        RecordIterator recIter = removedTriplesCache.getRecords();
        try {
          while ((data = recIter.next()) != null) {
            btree.insert(data);
          }
        }
        finally {
          recIter.close();
        }

        data = iter.next();
      }
      iter.close();


      for (TripleIndex index : indexes) {
        BTree btree = index.getBTree();


        RecordIterator recIter = recordCache.getRecords();
        try {
          while ((data = recIter.next()) != null) {
            btree.remove(data);
          }
        }
        finally {
          recIter.close();
        }

    }


    boolean validCache = updatedTriplesCache.isValid();


    for (TripleIndex index : indexes) {
      BTree btree = index.getBTree();


      RecordIterator iter;
      if (validCache) {
        // Use the cached set of updated triples
        iter = updatedTriplesCache.getRecords();
      }
      else {
        // Cache is invalid; too much updates(?). Iterate over all triples
        iter = btree.iterateAll();
      }


      try {
        byte[] data = null;
        while ((data = iter.next()) != null) {
          byte flags = data[FLAG_IDX];
          boolean added = (flags & ADDED_FLAG) != 0;
          boolean removed = (flags & REMOVED_FLAG) != 0;
          boolean toggled = (flags & TOGGLE_EXPLICIT_FLAG) != 0;


          if (removed) {
            // Record has been discarded earlier, do not put it back in!
            continue;
          }


          if (added || toggled) {
            if (toggled) {
              data[FLAG_IDX] ^= EXPLICIT_FLAG;
            }
            if (added) {
              data[FLAG_IDX] ^= ADDED_FLAG;
            }


            if (validCache) {
              // We're iterating the cache
              btree.insert(data);
            }
            else {
              // We're iterating the BTree itself
              iter.set(data);
            }

    boolean validCache = updatedTriplesCache.isValid();


    byte txnFlagsMask = ~(ADDED_FLAG | REMOVED_FLAG | TOGGLE_EXPLICIT_FLAG);


    for (TripleIndex index : indexes) {
      BTree btree = index.getBTree();


      RecordIterator iter;
      if (validCache) {
        // Use the cached set of updated triples
        iter = updatedTriplesCache.getRecords();
      }
      else {
        // Cache is invalid; too much updates(?). Iterate over all triples
        iter = btree.iterateAll();
      }


      try {
        byte[] data = null;
        while ((data = iter.next()) != null) {
          byte flags = data[FLAG_IDX];
          boolean removed = (flags & REMOVED_FLAG) != 0;
          boolean toggled = (flags & TOGGLE_EXPLICIT_FLAG) != 0;


          if (removed || toggled) {
            data[FLAG_IDX] &= txnFlagsMask;


            if (validCache) {
              // We're iterating the cache
              btree.insert(data);
            }
            else {
              // We're iterating the BTree itself
              iter.set(data);
            }

    public TripleIndex(String fieldSeq)
      throws IOException
    {
      tripleComparator = new TripleComparator(fieldSeq);
      File btreeFile = getIndexFile(fieldSeq);
      btree = new BTree(btreeFile, 2048, RECORD_LENGTH, tripleComparator, forceSync);
    }


  public HashIndex(File file)
    throws IOException
  {
    this.file = file;
    btree = new BTree(file, 4096, RECORD_LENGTH, new DefaultRecordComparator());
  }

Examples of org.openrdf.sail.nativerdf.btree.BTree

Related Classes of org.openrdf.sail.nativerdf.btree.BTree