Exemplo n.º 1
0
  /*
   * (non-Javadoc)
   * @see com.lexst.db.view.View#add(com.lexst.util.host.SiteHost, com.lexst.db.sign.range.SignRange)
   */
  @Override
  public boolean add(SiteHost host, IndexRange index) {
    if (index.getClass() != ShortIndexRange.class) {
      throw new ClassCastException("not small index");
    }
    ShortIndexRange idx = (ShortIndexRange) index;
    short begin = idx.getBegin();
    short end = idx.getEnd();
    ShortRange range = new ShortRange(begin, end);
    long chunkId = idx.getChunkId();

    IdentitySet set = mapSet.get(range);
    if (set == null) {
      set = new IdentitySet();
      mapSet.put(range, set);
    }
    return set.add(host, chunkId);
  }
Exemplo n.º 2
0
  /*
   * (non-Javadoc)
   * @see com.lexst.db.view.View#remove(com.lexst.util.host.SiteHost)
   */
  @Override
  public int remove(SiteHost host) {
    int size = mapSet.size();
    if (size == 0) return size;

    int count = 0;
    ArrayList<ShortRange> a = new ArrayList<ShortRange>(size);
    for (ShortRange range : mapSet.keySet()) {
      IdentitySet set = mapSet.get(range);
      if (set != null) {
        count += set.remove(host);
        if (set.isEmpty()) a.add(range);
      } else {
        a.add(range);
      }
    }
    for (ShortRange range : a) {
      mapSet.remove(range);
    }
    return count;
  }
Exemplo n.º 3
0
  /*
   * (non-Javadoc)
   * @see com.lexst.db.view.View#remove(com.lexst.util.host.SiteHost, long)
   */
  @Override
  public int remove(SiteHost host, long chunkId) {
    int size = mapSet.size();
    if (size == 0) return 0;

    int count = 0;
    ArrayList<ShortRange> a = new ArrayList<ShortRange>(size);
    for (ShortRange range : mapSet.keySet()) {
      IdentitySet set = mapSet.get(range);
      if (set != null) {
        boolean success = set.remove(host, chunkId);
        if (success) count++;
        if (set.isEmpty()) a.add(range);
      } else {
        a.add(range);
      }
    }
    for (ShortRange range : a) {
      mapSet.remove(range);
    }
    return count;
  }
Exemplo n.º 4
0
  /*
   * (non-Javadoc)
   * @see com.lexst.db.view.View#delete(com.lexst.util.host.SiteHost)
   */
  @Override
  public List<Long> delete(SiteHost host) {
    int size = mapSet.size();
    if (size == 0) return null;

    ArrayList<Long> array = new ArrayList<Long>(256);

    ArrayList<ShortRange> a = new ArrayList<ShortRange>(size);
    for (ShortRange range : mapSet.keySet()) {
      IdentitySet set = mapSet.get(range);
      if (set != null) {
        set.remove(host, array);
        if (set.isEmpty()) a.add(range);
      } else {
        a.add(range);
      }
    }
    for (ShortRange range : a) {
      mapSet.remove(range);
    }
    return array;
  }
Exemplo n.º 5
0
  /*
   * (non-Javadoc)
   * @see com.lexst.db.view.View#find(com.lexst.db.statement.Condition)
   */
  @Override
  public Set<Long> find(Condition condi) {
    IndexColumn num = condi.getValue();
    if (num == null || num.getClass() != ShortIndex.class) {
      throw new IllegalArgumentException("null pointer or invalid index!");
    }
    short value = ((ShortIndex) num).getValue();

    // 找到范围分片截止点
    HashSet<Long> all = new HashSet<Long>(1024);
    // 列名在左,参数值在右(固定!, 检查可以的范围)
    switch (condi.getCompare()) {
      case Condition.EQUAL:
        for (ShortRange range : mapSet.keySet()) {
          if (range.inside(value)) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.NOT_EQUAL:
        for (ShortRange range : mapSet.keySet()) {
          if (range.getBegin() != value || range.getEnd() != value) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.LESS:
        for (ShortRange range : mapSet.keySet()) {
          if (range.getBegin() < value || range.getEnd() < value) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.LESS_EQUAL:
        for (ShortRange range : mapSet.keySet()) {
          if (range.getBegin() <= value || range.getEnd() <= value) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.GREATER:
        for (ShortRange range : mapSet.keySet()) {
          if (range.getBegin() > value || range.getEnd() > value) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.GREATER_EQUAL:
        for (ShortRange range : mapSet.keySet()) {
          if (range.getBegin() >= value || range.getEnd() >= value) {
            IdentitySet set = mapSet.get(range);
            all.addAll(set.keySet());
          }
        }
        break;
      case Condition.LIKE:
        for (IdentitySet set : mapSet.values()) {
          all.addAll(set.keySet());
        }
        break;
    }
    return all;
  }