Reading images and OLE objects

Reading Images

If an image has been inserted in a DOORS object, the image data can be retrieved in the Object.image attribute.

Here is a sample code using this attribute to export the image as a PNG file:

    import java.awt.image.BufferedImage;
    import javax.imageio.ImageIO;
    import com.sodius.mdw.corext.model.ImportedImage;
    import com.sodius.mdw.metamodel.doors.*;
    ...
    com.sodius.mdw.metamodel.doors.Object object = ...;
    String imageData = object.getImage();
    if (imageData != null && imageData.length() != 0) {
        ImportedImage importedImage = ImportedImage.read(imageData, null);
        BufferedImage image = ImageIO.read(new ByteArrayInputStream(importedImage.getContents()));
        if (image != null) {
            ImageIO.write(image, "png", myFile);
        }
    }

Note: it is recommended to set the Common.OPTION_IGNORE_OLE_PREVIEW_IMAGES option to true so that Object.getImage() returns an image content only if this is a DOORS picture object. To read OLE objects preview images, refer to the next section.

Reading OLE Objects

OLE objects can be inserted in a DOORS Object Text. In that case the Object.objectText attribute contains HTML tags that reference the OLE objects, e.g.:

    <html><body><p><object data="path_to_ole_object"/></p></body></html>

The class RichTextUtils provides facilities to read attachments contained in OLE objects.

Here is a sample code that determines attached OLE objects and get access to their content (including their preview images):

    import com.sodius.mdw.metamodel.doors.*;
    import com.sodius.mdw.metamodel.doors.richtext.Attachment;
    import com.sodius.mdw.metamodel.doors.richtext.AttachmentResolver;
    import com.sodius.mdw.metamodel.doors.richtext.RichTextUtils;
    ...
    com.sodius.mdw.metamodel.doors.Object object = ...;
    AttachmentResolver resolver = RichTextUtils.createAttachmentResolver(object.eModel());
    for (Attachment attachment : RichTextUtils.getAttachments(object.getObjectText())) {
    	System.out.println("Found an OLE object: " + attachment.getPath());
    	InputStream input = resolver.getInputStream(attachment);
    	...
    	// now handling the preview image of the OLE object
    	Attachment preview = RichTextUtils.getAttachmentPreview(attachment);
    	input = resolver.getInputStream(preview);
    }
    resolver.dispose();

The Common.OPTION_IGNORE_OLE_PREVIEW_IMAGES option must be set to false so that preview images of OLE objects are available.