Ejemplo n.º 1
0
  /**
   * Common initialization code called from various constructors.
   *
   * @param mimeType the MIME Content Type (must have a class= param)
   * @param humanPresentableName the human Presentable Name or <code>null</code>
   * @param classLoader the fallback class loader to resolve against
   * @throws MimeTypeParseException
   * @throws ClassNotFoundException
   * @throws NullPointerException if <code>mimeType</code> is null
   * @see tryToLoadClass
   */
  private void initialize(String mimeType, String humanPresentableName, ClassLoader classLoader)
      throws MimeTypeParseException, ClassNotFoundException {
    if (mimeType == null) {
      throw new NullPointerException("mimeType");
    }

    this.mimeType = new MimeType(mimeType); // throws

    String rcn = getParameter("class");

    if (rcn == null) {
      if ("application/x-java-serialized-object".equals(this.mimeType.getBaseType()))
        throw new IllegalArgumentException("no representation class specified for:" + mimeType);
      else representationClass = java.io.InputStream.class; // default
    } else { // got a class name
      representationClass = DataFlavor.tryToLoadClass(rcn, classLoader);
    }

    this.mimeType.setParameter("class", representationClass.getName());

    if (humanPresentableName == null) {
      humanPresentableName = this.mimeType.getParameter("humanPresentableName");
      if (humanPresentableName == null)
        humanPresentableName = this.mimeType.getPrimaryType() + "/" + this.mimeType.getSubType();
    }

    this.humanPresentableName = humanPresentableName; // set it.

    this.mimeType.removeParameter("humanPresentableName"); // just in case
  }
Ejemplo n.º 2
0
  /** Restores this <code>DataFlavor</code> from a Serialized state. */
  public synchronized void readExternal(ObjectInput is) throws IOException, ClassNotFoundException {
    String rcn = null;
    mimeType = (MimeType) is.readObject();

    if (mimeType != null) {
      humanPresentableName = mimeType.getParameter("humanPresentableName");
      mimeType.removeParameter("humanPresentableName");
      rcn = mimeType.getParameter("class");
      if (rcn == null) {
        throw new IOException("no class parameter specified in: " + mimeType);
      }
    }

    try {
      representationClass = (Class) is.readObject();
    } catch (OptionalDataException ode) {
      if (!ode.eof || ode.length != 0) {
        throw ode;
      }
      // Ensure backward compatibility.
      // Old versions didn't write the representation class to the stream.
      if (rcn != null) {
        representationClass = DataFlavor.tryToLoadClass(rcn, getClass().getClassLoader());
      }
    }
  }