Exemplo n.º 1
0
  public boolean WriteBytesToStream(
      XStream xStream, String sStreamName, String sMediaType, boolean bCompressed, byte[] pBytes) {
    // get output stream of substream
    XOutputStream xOutput = xStream.getOutputStream();
    if (xOutput == null) {
      Error("Can't get XOutputStream implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // get XTrucate implementation from output stream
    XTruncate xTruncate = (XTruncate) UnoRuntime.queryInterface(XTruncate.class, xOutput);
    if (xTruncate == null) {
      Error("Can't get XTruncate implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // write requested byte sequence
    try {
      xTruncate.truncate();
      xOutput.writeBytes(pBytes);
    } catch (Exception e) {
      Error("Can't write to stream '" + sStreamName + "', exception: " + e);
      return false;
    }

    // get access to the XPropertySet interface
    XPropertySet xPropSet = (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, xStream);
    if (xPropSet == null) {
      Error("Can't get XPropertySet implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // set properties to the stream
    try {
      xPropSet.setPropertyValue("MediaType", sMediaType);
      xPropSet.setPropertyValue("Compressed", new Boolean(bCompressed));
    } catch (Exception e) {
      Error("Can't set properties to substream '" + sStreamName + "', exception: " + e);
      return false;
    }

    // check size property of the stream
    try {
      long nSize = AnyConverter.toLong(xPropSet.getPropertyValue("Size"));
      if (nSize != pBytes.length) {
        Error("The 'Size' property of substream '" + sStreamName + "' contains wrong value!");
        return false;
      }
    } catch (Exception e) {
      Error("Can't get 'Size' property from substream '" + sStreamName + "', exception: " + e);
      return false;
    }

    return true;
  }
Exemplo n.º 2
0
  public boolean WriteBytesToSubstreamDefaultCompressed(
      XStorage xStorage, String sStreamName, String sMediaType, byte[] pBytes) {
    // open substream element
    XStream xSubStream = null;
    try {
      Object oSubStream = xStorage.openStreamElement(sStreamName, ElementModes.WRITE);
      xSubStream = (XStream) UnoRuntime.queryInterface(XStream.class, oSubStream);
      if (xSubStream == null) {
        Error("Can't create substream '" + sStreamName + "'!");
        return false;
      }
    } catch (Exception e) {
      Error("Can't create substream '" + sStreamName + "', exception : " + e + "!");
      return false;
    }

    // get output stream of substream
    XOutputStream xOutput = xSubStream.getOutputStream();
    if (xOutput == null) {
      Error("Can't get XOutputStream implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // get XTrucate implementation from output stream
    XTruncate xTruncate = (XTruncate) UnoRuntime.queryInterface(XTruncate.class, xOutput);
    if (xTruncate == null) {
      Error("Can't get XTruncate implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // write requested byte sequence
    try {
      xTruncate.truncate();
      xOutput.writeBytes(pBytes);
    } catch (Exception e) {
      Error("Can't write to stream '" + sStreamName + "', exception: " + e);
      return false;
    }

    // get access to the XPropertySet interface
    XPropertySet xPropSet =
        (XPropertySet) UnoRuntime.queryInterface(XPropertySet.class, xSubStream);
    if (xPropSet == null) {
      Error("Can't get XPropertySet implementation from substream '" + sStreamName + "'!");
      return false;
    }

    // set properties to the stream
    // do not set the compressed property
    try {
      xPropSet.setPropertyValue("MediaType", sMediaType);
    } catch (Exception e) {
      Error("Can't set properties to substream '" + sStreamName + "', exception: " + e);
      return false;
    }

    // check size property of the stream
    try {
      long nSize = AnyConverter.toLong(xPropSet.getPropertyValue("Size"));
      if (nSize != pBytes.length) {
        Error("The 'Size' property of substream '" + sStreamName + "' contains wrong value!");
        return false;
      }
    } catch (Exception e) {
      Error("Can't get 'Size' property from substream '" + sStreamName + "', exception: " + e);
      return false;
    }

    // free the stream resources, garbage collector may remove the object too late
    if (!disposeStream(xSubStream, sStreamName)) return false;

    return true;
  }