Examples of com.google.code.javax.activation.DataHandler

com.google.code.javax.activation.DataHandler

The DataHandler class provides a consistent interface to data available in many different sources and formats. It manages simple stream to string conversions and related operations using DataContentHandlers. It provides access to commands that can operate on the data. The commands are found using a CommandMap.

DataHandler and the Transferable Interface

DataHandler implements the Transferable interface so that data can be used in AWT data transfer operations, such as cut and paste and drag and drop. The implementation of the Transferable interface relies on the availability of an installed DataContentHandler object corresponding to the MIME type of the data represented in the specific instance of the DataHandler.

DataHandler and CommandMaps

The DataHandler keeps track of the current CommandMap that it uses to service requests for commands (getCommand, getAllCommands, getPreferredCommands). Each instance of a DataHandler may have a CommandMap associated with it using the setCommandMap method. If a CommandMap was not set, DataHandler calls the getDefaultCommandMap method in CommandMap and uses the value it returns. See CommandMap for more information.

DataHandler and URLs

The current DataHandler implementation creates a private instance of URLDataSource when it is constructed with a URL. @see javax.activation.CommandMap @see javax.activation.DataContentHandler @see javax.activation.DataSource @see javax.activation.URLDataSource

                type = contentWithEncoding(type, encoding);
            }


            try {
                DataSource source = new ByteArrayDataSource(buf.toString(), type);
                part.setDataHandler(new DataHandler(source));
            } catch (final IOException IOE) {
                reportError(IOE.getMessage(), IOE, ErrorManager.FORMAT_FAILURE);
                part.setText(buf.toString(), encoding);
            }
        } else {


      /* Special-case Multipart and Nested content. All other
       * cases are handled by the superclass.
       */
      if (bs.isMulti())
    dh = new DataHandler(
      new IMAPMultipartDataSource(this, bs.bodies, 
                sectionId, this)
         );
      else if (bs.isNested() && isREV1())
    /* Nested messages are handled specially only for
     * IMAP4rev1. IMAP4 doesn't provide enough support to 
     * FETCH the components of nested messages
     */
    dh = new DataHandler(
          new IMAPNestedMessage(this, 
        bs.bodies[0], 
        bs.envelope,
        sectionId == null ? "1" : sectionId + ".1"),
          type

Examples of com.google.code.javax.activation.DataHandler

Related Classes of com.google.code.javax.activation.DataHandler