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Problem with the Image View [message #988605]

Fri, 30 November 2012 16:50

Omkar Mujumdar

Messages: 22
Registered: October 2012

Junior Member

Hi,

Thank You for wonderful Eclipse Scout Tutorial.

I have created a form in Scout, where I have added an Image Field in the Mainbox and I am able to load an icon which is available in Scout or an Url image into that field. But I am unable to load an image from the SQL database into the Image Field. Can you please help me with this or give some pointers.

Another thing I wanted to ask is, I have created a Table Page with some values displayed in table page and a Form within it to display the selected values. I am able to display the Form when I right click on the selected value of a TablePage, where the Form appears. Now I need to display that Form when I double clicked (Left Click) on the selected value of the TablePage, where again I am struck.
Can u please provide me with some pointers .

Thank You in Advance.

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Re: Problem with the Image View [message #988673 is a reply to message #988605]

Sat, 01 December 2012 00:18

Sebastian Boccardi

Messages: 47
Registered: September 2012
Location: Montevideo

Member

Never tried to load image so i can't help you there, to open form with a double click on a table you should override in the table :

    @Override
    protected void execRowAction(ITableRow row) throws ProcessingException {
        // here you can call i thin the menu option to open the form 
        // or just create the form here
    }

I'm no expert but it works for me.... it's only executed when you double click or hit Enter key while row selected (so if you navigate with keyboard is useful).

luck!
Sebastian

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Re: Problem with the Image View [message #988683 is a reply to message #988673]

Sat, 01 December 2012 09:00

Omkar Mujumdar

Messages: 22
Registered: October 2012

Junior Member

Thank you very much Sebastian for the solution for displaying the Form when double clicked, it worked.

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Re: Problem with the Image View [message #988689 is a reply to message #988673]

Sat, 01 December 2012 10:43

Matthias Zimmermann

Messages: 208
Registered: June 2015

Senior Member

Regarding loading an image from a database: Let's assume that in your database there is a table IMAGE with columns ID and CONTENT. To fetch the image content from the server you could add a loadFile method on some FileTransferProcessService server service as follows:

  @Override
  public byte[] loadFile(String id) throws ProcessingException {
    ByteArrayHolder contentHolder = new ByteArrayHolder();
    SQL.selectInto("SELECT CONTENT INTO :content FROM IMAGE WHERE ID=:id", new NVPair("content", contentHolder), new NVPair("id", id));
    return contentHolder.getValue();
  }

using this server method you can display the image in your form by adding the method execInitField to the image filed in your form:

@Override
protected void execInitField() throws ProcessingException {
  String id = <<here goes your file id>>;
  byte[] content = SERVICES.getService(IFileTransferProcessService.class).loadFile(id);
  setImage(content);
}

let us know if that's what you were looking for

matthias

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