コード例 #1
0
ファイル: Data.java プロジェクト: JosuaKrause/basex
  /**
   * Updates (renames) an element, attribute or pi name.
   *
   * @param pre pre value
   * @param kind node kind
   * @param name new tag, attribute or pi name
   * @param uri uri
   */
  public final void update(final int pre, final int kind, final byte[] name, final byte[] uri) {

    meta.update();

    if (kind == PI) {
      updateText(pre, trim(concat(name, SPACE, atom(pre))), kind);
    } else {
      // update/set namespace reference
      final int ouri = nspaces.uri(name, pre, this);
      final boolean ne = ouri == 0 && uri.length != 0;
      final int npre = kind == ATTR ? parent(pre, kind) : pre;
      final int nuri =
          ne
              ? nspaces.add(npre, npre, prefix(name), uri, this)
              : ouri != 0 && eq(nspaces.uri(ouri), uri) ? ouri : 0;

      // write namespace uri reference
      table.write1(pre, kind == ELEM ? 3 : 11, nuri);
      // write name reference
      table.write2(
          pre,
          1,
          (nsFlag(pre) ? 1 << 15 : 0)
              | (kind == ELEM ? tagindex : atnindex).index(name, null, false));
      // write namespace flag
      table.write2(npre, 1, (ne || nsFlag(npre) ? 1 << 15 : 0) | name(npre));
    }
  }
コード例 #2
0
ファイル: Data.java プロジェクト: JosuaKrause/basex
  /**
   * Inserts a data instance at the specified pre value. Note that the specified data instance must
   * differ from this instance.
   *
   * @param ipre value at which to insert new data
   * @param ipar parent pre value of node
   * @param clip data clip
   */
  public final void insert(final int ipre, final int ipar, final DataClip clip) {
    meta.update();

    // update value and document indexes
    if (meta.updindex) indexBegin();
    resources.insert(ipre, clip);

    final int dsize = clip.size();
    final int buf = Math.min(dsize, IO.BLOCKSIZE >> IO.NODEPOWER);
    // resize buffer to cache more entries
    buffer(buf);

    // find all namespaces in scope to avoid duplicate declarations
    final TokenMap nsScope = nspaces.scope(ipar, this);

    // loop through all entries
    final IntList preStack = new IntList();
    final NSNode nsRoot = nspaces.current();
    final HashSet<NSNode> newNodes = new HashSet<NSNode>();
    final IntList flagPres = new IntList();

    // indicates if database only contains a dummy node
    final Data data = clip.data;
    int c = 0;
    for (int dpre = clip.start; dpre < clip.end; ++dpre, ++c) {
      if (c != 0 && c % buf == 0) insert(ipre + c - buf);

      final int pre = ipre + c;
      final int dkind = data.kind(dpre);
      final int dpar = data.parent(dpre, dkind);
      // ipar < 0 if document nodes on top level are added
      final int dis = dpar >= 0 ? dpre - dpar : ipar >= 0 ? pre - ipar : 0;
      final int par = dis == 0 ? -1 : pre - dis;

      if (c == 0) nspaces.root(par, this);

      while (!preStack.isEmpty() && preStack.peek() > par) nspaces.close(preStack.pop());

      switch (dkind) {
        case DOC:
          // add document
          nspaces.prepare();
          final int s = data.size(dpre, dkind);
          doc(pre, s, data.text(dpre, true));
          meta.ndocs++;
          preStack.push(pre);
          break;
        case ELEM:
          // add element
          nspaces.prepare();
          boolean ne = false;
          if (data.nsFlag(dpre)) {
            final Atts at = data.ns(dpre);
            for (int a = 0; a < at.size(); ++a) {
              // see if prefix has been declared/ is part of current ns scope
              final byte[] old = nsScope.get(at.name(a));
              if (old == null || !eq(old, at.value(a))) {
                // we have to keep track of all new NSNodes that are added
                // to the Namespace structure, as their pre values must not
                // be updated. I.e. if an NSNode N with pre value 3 existed
                // prior to inserting and two new nodes are inserted at
                // location pre == 3 we have to make sure N and only N gets
                // updated.
                newNodes.add(nspaces.add(at.name(a), at.value(a), pre));
                ne = true;
              }
            }
          }
          byte[] nm = data.name(dpre, dkind);
          elem(
              dis,
              tagindex.index(nm, null, false),
              data.attSize(dpre, dkind),
              data.size(dpre, dkind),
              nspaces.uri(nm, true),
              ne);
          preStack.push(pre);
          break;
        case TEXT:
        case COMM:
        case PI:
          // add text
          text(pre, dis, data.text(dpre, true), dkind);
          break;
        case ATTR:
          // add attribute
          nm = data.name(dpre, dkind);
          // check if prefix already in nsScope or not
          final byte[] attPref = prefix(nm);
          // check if prefix of attribute has already been declared, otherwise
          // add declaration to parent node
          if (data.nsFlag(dpre) && nsScope.get(attPref) == null) {
            nspaces.add(
                par,
                preStack.isEmpty() ? -1 : preStack.peek(),
                attPref,
                data.nspaces.uri(data.uri(dpre, dkind)),
                this);
            // save pre value to set ns flag later for this node. can't be done
            // here as direct table access would interfere with the buffer
            flagPres.add(par);
          }
          attr(
              pre,
              dis,
              atnindex.index(nm, null, false),
              data.text(dpre, false),
              nspaces.uri(nm, false),
              false);
          break;
      }
    }
    // finalize and update namespace structure
    while (!preStack.isEmpty()) nspaces.close(preStack.pop());
    nspaces.root(nsRoot);

    if (bp != 0) insert(ipre + c - 1 - (c - 1) % buf);
    // reset buffer to old size
    buffer(1);

    // set ns flags
    for (int f = 0; f < flagPres.size(); f++) {
      final int fl = flagPres.get(f);
      table.write2(fl, 1, name(fl) | 1 << 15);
    }

    // increase size of ancestors
    int p = ipar;
    while (p >= 0) {
      final int k = kind(p);
      size(p, k, size(p, k) + dsize);
      p = parent(p, k);
    }

    if (meta.updindex) {
      // add the entries to the ID -> PRE mapping:
      idmap.insert(ipre, id(ipre), dsize);
      indexEnd();
    }

    if (!cache) updateDist(ipre + dsize, dsize);

    // propagate PRE value shifts to namespaces
    if (ipar != -1) nspaces.insert(ipre, dsize, newNodes);
  }