示例#1
0
 /**
  * Returns the specified image.
  *
  * @param url image url
  * @return image
  */
 public static Image get(final URL url) {
   try {
     return ImageIO.read(url);
   } catch (final IOException ex) {
     throw Util.notExpected(ex);
   }
 }
示例#2
0
文件: ADate.java 项目: jefferya/basex
 static {
   try {
     DF = DatatypeFactory.newInstance();
   } catch (final Exception ex) {
     throw Util.notExpected(ex);
   }
 }
示例#3
0
文件: Token.java 项目: nikhi/basex
 /**
  * Returns an MD5 hash in lower case.
  *
  * @param string string to be hashed
  * @return md5 hash
  */
 public static String md5(final String string) {
   try {
     final MessageDigest md = MessageDigest.getInstance("MD5");
     return string(hex(md.digest(token(string)), false));
   } catch (final Exception ex) {
     throw Util.notExpected(ex);
   }
 }
示例#4
0
  @Override
  public void close() {
    try {
      gui.set(MainOptions.EXPORTER, options(SerialMethod.valueOf(method.getSelectedItem())));
    } catch (final BaseXException ex) {
      throw Util.notExpected(ex);
    }
    if (!ok) return;

    super.close();
    path.store();
  }
示例#5
0
 @Override
 public boolean lock(final boolean lock) {
   try {
     if (lock) {
       if (exclusiveLock()) return true;
       if (sharedLock()) return false;
     } else {
       if (sharedLock()) return true;
     }
   } catch (final IOException ex) {
     Util.stack(ex);
   }
   throw Util.notExpected((lock ? "Exclusive" : "Shared") + " lock could not be acquired.");
 }
示例#6
0
  /**
   * Adds default interactions to the specified component.
   *
   * @param comp component
   * @param win parent window
   */
  public static void addInteraction(final Component comp, final Window win) {
    comp.addMouseListener(
        new MouseAdapter() {
          @Override
          public void mouseEntered(final MouseEvent e) {
            focus(comp);
          }
        });

    if (win instanceof BaseXDialog) {
      // add default keys
      final BaseXDialog d = (BaseXDialog) win;
      comp.addKeyListener(
          new KeyAdapter() {
            @Override
            public void keyPressed(final KeyEvent e) {
              final Object s = e.getSource();
              if (s instanceof BaseXCombo && ((BaseXCombo) s).isPopupVisible()) return;

              // do not key close dialog if button or editor is focused
              if (ENTER.is(e) && !(s instanceof BaseXButton || s instanceof TextPanel)) {
                d.close();
              } else if (ESCAPE.is(e)) {
                // do not cancel dialog if search bar is opened
                boolean close = true;
                if (s instanceof TextPanel) {
                  final SearchBar bar = ((TextPanel) s).getSearch();
                  close = bar == null || !bar.deactivate(true);
                }
                if (close) d.cancel();
              }
            }
          });
      return;
    }

    if (win instanceof GUI) {
      comp.addKeyListener(globalShortcuts((GUI) win));
    } else {
      throw Util.notExpected("Reference to main window expected.");
    }
  }
示例#7
0
 /**
  * Searches for the block containing the entry for the specified pre value. Reads the block and
  * returns its offset inside the block.
  *
  * @param pre pre of the entry to search for
  * @return offset of the entry in the block
  */
 private int cursor(final int pre) {
   int fp = fpre;
   int np = npre;
   if (pre < fp || pre >= np) {
     final int last = used - 1;
     int l = 0;
     int h = last;
     int m = page;
     while (l <= h) {
       if (pre < fp) h = m - 1;
       else if (pre >= np) l = m + 1;
       else break;
       m = h + l >>> 1;
       fp = fpre(m);
       np = m == last ? meta.size : fpre(m + 1);
     }
     if (l > h)
       throw Util.notExpected(
           "Data Access out of bounds:"
               + "\n- pre value: "
               + pre
               + "\n- #used blocks: "
               + used
               + "\n- #total locks: "
               + blocks
               + "\n- access: "
               + m
               + " ("
               + l
               + " > "
               + h
               + ']');
     readPage(m);
   }
   return pre - fpre << IO.NODEPOWER;
 }
示例#8
0
  @Override
  public void insert(final int pre, final byte[] entries) {
    final int nnew = entries.length;
    if (nnew == 0) return;
    dirty();

    // number of records to be inserted
    final int nr = nnew >>> IO.NODEPOWER;

    int split = 0;
    if (used == 0) {
      // special case: insert new data into first block if database is empty
      readPage(0);
      usedPages.set(0);
      ++used;
    } else if (pre > 0) {
      // find the offset within the block where the new records will be inserted
      split = cursor(pre - 1) + IO.NODESIZE;
    } else {
      // all insert operations will add data after first node.
      // i.e., there is no "insert before first document" statement
      throw Util.notExpected("Insertion at beginning of populated table.");
    }

    // number of bytes occupied by old records in the current block
    final int nold = npre - fpre << IO.NODEPOWER;
    // number of bytes occupied by old records which will be moved at the end
    final int moved = nold - split;

    // special case: all entries fit in the current block
    Buffer bf = bm.current();
    if (nold + nnew <= IO.BLOCKSIZE) {
      Array.move(bf.data, split, nnew, moved);
      System.arraycopy(entries, 0, bf.data, split, nnew);
      bf.dirty = true;

      // increment first pre-values of blocks after the last modified block
      for (int i = page + 1; i < used; ++i) fpres[i] += nr;
      // update cached variables (fpre is not changed)
      npre += nr;
      meta.size += nr;
      return;
    }

    // append old entries at the end of the new entries
    final byte[] all = new byte[nnew + moved];
    System.arraycopy(entries, 0, all, 0, nnew);
    System.arraycopy(bf.data, split, all, nnew, moved);

    // fill in the current block with new entries
    // number of bytes which fit in the first block
    int nrem = IO.BLOCKSIZE - split;
    if (nrem > 0) {
      System.arraycopy(all, 0, bf.data, split, nrem);
      bf.dirty = true;
    }

    // number of new required blocks and remaining bytes
    final int req = all.length - nrem;
    int needed = req / IO.BLOCKSIZE;
    final int remain = req % IO.BLOCKSIZE;

    if (remain > 0) {
      // check if the last entries can fit in the block after the current one
      if (page + 1 < used) {
        final int o = occSpace(page + 1) << IO.NODEPOWER;
        if (remain <= IO.BLOCKSIZE - o) {
          // copy the last records
          readPage(page + 1);
          bf = bm.current();
          System.arraycopy(bf.data, 0, bf.data, remain, o);
          System.arraycopy(all, all.length - remain, bf.data, 0, remain);
          bf.dirty = true;
          // reduce the pre value, since it will be later incremented with nr
          fpres[page] -= remain >>> IO.NODEPOWER;
          // go back to the previous block
          readPage(page - 1);
        } else {
          // there is not enough space in the block - allocate a new one
          ++needed;
        }
      } else {
        // this is the last block - allocate a new one
        ++needed;
      }
    }

    // number of expected blocks: existing blocks + needed block - empty blocks
    final int exp = blocks + needed - (blocks - used);
    if (exp > fpres.length) {
      // resize directory arrays if existing ones are too small
      final int ns = Math.max(fpres.length << 1, exp);
      fpres = Arrays.copyOf(fpres, ns);
      pages = Arrays.copyOf(pages, ns);
    }

    // make place for the blocks where the new entries will be written
    Array.move(fpres, page + 1, needed, used - page - 1);
    Array.move(pages, page + 1, needed, used - page - 1);

    // write the all remaining entries
    while (needed-- > 0) {
      freeBlock();
      nrem += write(all, nrem);
      fpres[page] = fpres[page - 1] + IO.ENTRIES;
      pages[page] = (int) bm.current().pos;
    }

    // increment all fpre values after the last modified block
    for (int i = page + 1; i < used; ++i) fpres[i] += nr;

    meta.size += nr;

    // update cached variables
    fpre = fpres[page];
    npre = page + 1 < used && fpres[page + 1] < meta.size ? fpres[page + 1] : meta.size;
  }
示例#9
0
 /**
  * Parses a single command.
  *
  * @param cmd command definition
  * @return resulting command
  * @throws QueryException query exception
  */
 private Command parse(final Cmd cmd) throws QueryException {
   switch (cmd) {
     case CREATE:
       switch (consume(CmdCreate.class, cmd)) {
         case BACKUP:
           return new CreateBackup(glob(cmd));
         case DATABASE:
         case DB:
           return new CreateDB(name(cmd), remaining(null));
         case INDEX:
           return new CreateIndex(consume(CmdIndex.class, cmd));
         case USER:
           return new CreateUser(name(cmd), password());
         case EVENT:
           return new CreateEvent(name(cmd));
       }
       break;
     case COPY:
       return new Copy(name(cmd), name(cmd));
     case ALTER:
       switch (consume(CmdAlter.class, cmd)) {
         case DATABASE:
         case DB:
           return new AlterDB(name(cmd), name(cmd));
         case USER:
           return new AlterUser(name(cmd), password());
       }
       break;
     case OPEN:
       return new Open(name(cmd));
     case CHECK:
       return new Check(string(cmd));
     case ADD:
       String arg = key(S_TO, null) ? string(cmd) : null;
       return new Add(arg, remaining(cmd));
     case STORE:
       arg = key(S_TO, null) ? string(cmd) : null;
       return new Store(arg, remaining(cmd));
     case RETRIEVE:
       return new Retrieve(string(cmd));
     case DELETE:
       return new Delete(string(cmd));
     case RENAME:
       return new Rename(string(cmd), string(cmd));
     case REPLACE:
       return new Replace(string(cmd), remaining(cmd));
     case INFO:
       switch (consume(CmdInfo.class, cmd)) {
         case NULL:
           return new Info();
         case DATABASE:
         case DB:
           return new InfoDB();
         case INDEX:
           return new InfoIndex(consume(CmdIndexInfo.class, null));
         case STORAGE:
           String arg1 = number(null);
           final String arg2 = arg1 != null ? number(null) : null;
           if (arg1 == null) arg1 = xquery(null);
           return new InfoStorage(arg1, arg2);
       }
       break;
     case INSPECT:
       return new Inspect();
     case CLOSE:
       return new Close();
     case LIST:
       return new List(name(null), string(null));
     case DROP:
       switch (consume(CmdDrop.class, cmd)) {
         case DATABASE:
         case DB:
           return new DropDB(glob(cmd));
         case INDEX:
           return new DropIndex(consume(CmdIndex.class, cmd));
         case USER:
           return new DropUser(glob(cmd), key(ON, null) ? glob(cmd) : null);
         case BACKUP:
           return new DropBackup(glob(cmd));
         case EVENT:
           return new DropEvent(name(cmd));
       }
       break;
     case OPTIMIZE:
       switch (consume(CmdOptimize.class, cmd)) {
         case NULL:
           return new Optimize();
         case ALL:
           return new OptimizeAll();
       }
       break;
     case EXPORT:
       return new Export(string(cmd));
     case XQUERY:
       return new XQuery(xquery(cmd));
     case RUN:
       return new Run(string(cmd));
     case TEST:
       return new Test(string(cmd));
     case EXECUTE:
       return new Execute(string(cmd, false));
     case FIND:
       return new Find(string(cmd, false));
     case CS:
       return new Cs(xquery(cmd));
     case GET:
       return new Get(name(null));
     case SET:
       return new Set(name(cmd), string(null, false));
     case PASSWORD:
       return new Password(password());
     case HELP:
       return new Help(name(null));
     case EXIT:
       return new Exit();
     case FLUSH:
       return new Flush();
     case KILL:
       return new Kill(string(cmd));
     case RESTORE:
       return new Restore(name(cmd));
     case SHOW:
       switch (consume(CmdShow.class, cmd)) {
         case SESSIONS:
           return new ShowSessions();
         case USERS:
           return new ShowUsers(key(ON, null) ? name(cmd) : null);
         case BACKUPS:
           return new ShowBackups();
         case EVENTS:
           return new ShowEvents();
       }
       break;
     case GRANT:
       final CmdPerm perm = consume(CmdPerm.class, cmd);
       if (perm == null) throw help(null, cmd);
       final String db = key(ON, null) ? glob(cmd) : null;
       key(S_TO, cmd);
       return new Grant(perm, glob(cmd), db);
     case REPO:
       switch (consume(CmdRepo.class, cmd)) {
         case INSTALL:
           return new RepoInstall(string(cmd), new InputInfo(parser));
         case DELETE:
           return new RepoDelete(string(cmd), new InputInfo(parser));
         case LIST:
           return new RepoList();
       }
       break;
   }
   throw Util.notExpected("Command specified, but not implemented yet");
 }