More data on Problem with nested tables

Hi all,

sorry if this reappears as a new Thread, I think I am not yet up with
handling this list. How do I reply through the web interface, as I seem not
getting any mails directly at my place?

First, because you asked for it, the HTML template. This is only the part
with this Iterator problem:

<table cellpadding="0" cellspacing="0" border="0" width="444">
  <tr class="Dir::Iterate_Start.GeoCodeView Dir::Iterate_Next.GeoCodeView">
    <td>
      <table>
        <tbody id="carrierElement">
          <tr id="lineMainSpacer0"
class="Dir::Set_Attr.GeoCodeView.lineMainSpacer.id">
            <td><img src="../../images/main/pixel_trans.gif" alt=""
width="1" height="15" border="0"></td>
          </tr>
          <tr id="lineMainElement0"
class="Dir::Set_Attr.GeoCodeView.lineMainElement.id">
            <td>
              <table cellpadding="0" cellspacing="0" border="0" width="444">
                <tbody id="carrierMainElement0"
class="Dir::Set_Attr.GeoCodeView.carrierMainElement.id">
                  <tr class="Dir::Iterate_Start.GeoCodeCoordinate
Dir::Iterate_Next.GeoCodeCoordinate">
                    <td>
                      <tbody>
                        <tr id="lineMainSpacer0_0"
class="Dir::Set_Attr.GeoCodeCoordinate.lineMainSpacer.id">
                          <td colspan="4"><img
src="../../images/main/pixel_trans.gif" alt="" width="1" height="3"
border="0"></td>
                        </tr>
                        <tr id="lineMainElement0_0"
class="Dir::Set_Attr.GeoCodeCoordinate.lineMainElement.id">
                          <td class="flow" width="27"><a id="addElement0_0"
onmouseover="showTip('Zeilen hinzuf&uuml;gen (Koordinaten)');"
onmouseout="showTip();" href="javascript:appendElement(0);"
class="Dir::Set_Attr.EditMetaData.CoordinateAddTipLabel.onmouseover
Dir::Get_Data.EditMetaData.AddLineLabel
Dir::Set_Attr.GeoCodeView.append.href
Dir::Set_Attr.GeoCodeCoordinate.addElement.id">+</a>&nbsp;<a
id="removeElement0_0" onmouseover="showTip('Zeilen entfernen
(Koordinaten)');"  onmouseout="showTip();"
href="javascript:removeElement(0);"
class="Dir::Set_Attr.EditMetaData.CoordinateRemoveTipLabel.onmouseover
Dir::Get_Data.EditMetaData.RemoveLineLabel
Dir::Set_Attr.GeoCodeView.remove.href
Dir::Set_Attr.GeoCodeCoordinate.removeElement.id">-</a></td>
                          <td height="18" class="flow" width="115">X km/m, Y
km/m</td>
                          <td class="flow" width="275"><input type="text"
name="coordinateXkm0_0" id="coordinateXkm0_0" class="input60
Dir::Set_Attr.EditMetaData.input60.class
Dir::Set_Attr.EditMetaData.ReadOnly.readonly
Dir::Set_Attr.GeoCodeCoordinate.coordinateXkm.name
Dir::Set_Attr.GeoCodeCoordinate.coordinateXkm.id" maxlength="3"
onfocus="this.select();"><img src="../../images/main/pixel_trans.gif" alt=""
width="5" height="1" border="0"><input type="text" name="coordinateXm0_0"
id="coordinateXm0_0" class="input60 Dir::Set_Attr.EditMetaData.input60.class
Dir::Set_Attr.EditMetaData.ReadOnly.readonly
Dir::Set_Attr.GeoCodeCoordinate.coordinateXm.name
Dir::Set_Attr.GeoCodeCoordinate.coordinateXm.id" maxlength="3"
onfocus="this.select();"><img src="../../images/main/pixel_trans.gif" alt=""
width="5" height="1" border="0"><input type="text" name="coordinateYkm0_0"
id="coordinateYkm0_0" class="input60
Dir::Set_Attr.EditMetaData.input60.class
Dir::Set_Attr.EditMetaData.ReadOnly.readonly
Dir::Set_Attr.GeoCodeCoordinate.coordinateYkm.name
Dir::Set_Attr.GeoCodeCoordinate.coordinateYkm.id" maxlength="3"
onfocus="this.select();"><img src="../../images/main/pixel_trans.gif" alt=""
width="5" height="1" border="0"><input type="text" name="coordinateYm0_0"
id="coordinateYm0_0" class="input60 Dir::Set_Attr.EditMetaData.input60.class
Dir::Set_Attr.EditMetaData.ReadOnly.readonly
Dir::Set_Attr.GeoCodeCoordinate.coordinateYm.name
Dir::Set_Attr.GeoCodeCoordinate.coordinateYm.id" maxlength="3"
onfocus="this.select();"></td>
                          <td width="23" style="padding-left: 5px;"><a
id="addMainElement0_0"  onmouseover="showTip('Zeile hinzuf&uuml;gen
(Koordinaten)');"  onmouseout="showTip();"
href="javascript:appendMainElement(0,0);"
class="Dir::Set_Attr.EditMetaData.GeologyAddTipLabel.onmouseover
Dir::Get_Data.EditMetaData.AddLineLabel
Dir::Set_Attr.GeoCodeCoordinate.addMainElement.id
Dir::Set_Attr.GeoCodeCoordinate.append.href">+</a>&nbsp;<a
id="removeMainElement0_0" onmouseover="showTip('Zeile entfernen
(Koordinaten)');"  onmouseout="showTip();"
href="javascript:removeMainElement(0,0);"
class="Dir::Set_Attr.EditMetaData.GeologyRemoveTipLabel.onmouseover
Dir::Get_Data.EditMetaData.RemoveLineLabel
Dir::Set_Attr.GeoCodeCoordinate.removeMainElement.id
Dir::Set_Attr.GeoCodeCoordinate.remove.href">-</a></td>
                        </tr>
                      </tbody>
                    </td>
                  </tr>
                  <tr class="Dir::Iterate_End.GeoCodeCoordinate
Dir::Discard"></tr>
                </tbody>
              </table>
            </td>
          </tr>
          <tr id="lineSubElement0"
class="Dir::Set_Attr.GeoCodeView.lineSubElement.id">
            <td>
              <table cellpadding="0" cellspacing="0" border="0" width="444">
                <tbody id="carrierSubElement0"
class="Dir::Set_Attr.GeoCodeView.carrierSubElement.id">
                  <tr class="Dir::Iterate_Start.GeoCodeCode
Dir::Iterate_Next.GeoCodeCode">
                    <td>
                      <tbody>
                        <tr id="lineSubSpacer0_0">
                          <td colspan="5"><img
src="../../images/main/pixel_trans.gif" alt="" width="1" height="3"
border="0"></td>
                        </tr>
                        <tr id="lineSubElement0_0"
class="Dir::Set_Attr.GeoCodeCode.lineSubElement.id">
                          <td class="flow" width="27">&nbsp;</td>
                          <td height="18" class="flow
Dir::Get_Data.EditMetaData.GeologyLabel" width="115">Schlagwortliste(n)</td>
                          <td><input type="text" name="geocode0_0"
id="geocode0_0" class="input300 Dir::Set_Attr.EditMetaData.input300.class
Dir::Set_Attr.EditMetaData.ReadOnly.readonly
Dir::Set_Attr.GeoCodeCode.geocode.id Dir::Set_Attr.GeoCodeCode.geocode.name"
onfocus="this.select();" value=""><img
src="../../images/main/pixel_trans.gif" alt="" width="3" height="1"
border="0"></td>
                          <td><a href="javascript:getGeoCode('geocode0_0');"
onmouseover="showTip('Detailinfo');" onmouseout="showTip();"
class="Dir::Set_Attr.EditMetaData.DetailInfoLabel.onmouseover"><img
src="../../images/icons/icon_external_on.gif" alt="" width="11" height="16"
border="0"></a></td>
                          <td width="23" style="padding-left: 5px;"><a
id="addSubElement0_0" onmouseover="showTip('Zeile hinzuf&uuml;gen
(Schlagwortliste(n))');"  onmouseout="showTip();"
href="javascript:appendSubElement(0,0);"
class="Dir::Set_Attr.EditMetaData.GeologyAddTipLabel.onmouseover
Dir::Set_Attr.GeoCodeCode.addSubElement.id
Dir::Set_Attr.GeoCodeCode.append.href">+</a>&nbsp;<a
id="removeSubElement0_0" onmouseover="showTip('Zeile entfernen');"
onmouseout="showTip();" href="javascript:removeSubElement(0,0);"
class="Dir::Set_Attr.EditMetaData.GeologyRemoveTipLabel.onmouseover
Dir::Set_Attr.GeoCodeCode.removeSubElement.id
Dir::Set_Attr.GeoCodeCode.remove.href">-</a></td>
                        </tr>
                      </tbody>
                    </td>
                  </tr>
                  <tr class="Dir::Iterate_End.GeoCodeCode
Dir::Discard"></tr>
                </tbody>
              </table>
            </td>
          </tr>
	</tbody>
      </table>
    </td>
  </tr>
  <tr class="Dir::Iterate_End.GeoCodeView Dir::Discard"></tr>
</table>

Sorry for the mess, but I didn't design this HTML ;-).

Then about the needed magic for the models. First some remarks about what I
can see here:
- The models get invoked
  - First GeoCodeView
  - Then GeoCodeCoordinate
  - Then GeoCodeCode
- When GeoCodeCoordinate is through with it's first Iteration, I see that
hasNext() is invoked and returns true, and instead of beeing reapplied
- GeoCodeCoordinate starts, until it is through, in my test case with
hasNext() returning false
- Now I expect at least that GeoCodeView is beeing hasNext()ed, but this
does not happen (but does when the inner models are not attached).
- I am rather confident, that the Models write into the page, because I can
see the getItem() returning what I expect, and I am also seeing proper data
in the result page where I put just for answering this question some garbage
into the template.
- The magic link between childs and parent is done in my case through two
Session objects, which are kept up to date with the current iteration of all
Models concerned, and the different Iteration counts for the inside models
for the different outside Iterations.
- As I said, when I don't attach the inner Models, then the outer Model
executes as expected.

I also tried to search the complete mail archive, but couldn't find anything
relevant to my case (this is of course my problem, otherwise I wouldn't be
in trouble right now I guess).

Just to illustrate, one of those inner Iterators.

public class GeoCodeView
  extends AbstractIterativeTemplateModel
{
  private static final String MODEL_NAME = "GeoCodeView";

  private  GeologyInfoMetaData[] m_metaData = null;

  private DocumentIteratorPosition m_iteratorPosition = null;

  public GeoCodeView()
  {
    super();
  }

  public String getName()
  {
    return GeoCodeView.MODEL_NAME;
  }

  public Object getItem(String key)
  {
    String result = null;
    if(key.equals("remove") || key.equals("append"))
      result = "javascript:" + key + "Element(" +
String.valueOf(m_iteratorPosition.getGeologyInfoPosition()) + ")";
    else
      result = key +
String.valueOf(m_iteratorPosition.getGeologyInfoPosition());
    System.out.println("GeoCodeView, getItem: " + result);
    return result;
  }

  public void preIterate()
  {
    this.m_metaData =
(GeologyInfoMetaData[])this.getViewContext().getRequest().
      getSession().getAttribute(SessionAttributes.DOCUMENT_META_DATA);
    this.m_iteratorPosition =
(DocumentIteratorPosition)this.getViewContext().getRequest().

getSession().getAttribute(SessionAttributes.DOCUMENT_ITERATOR_POSITION);
    this.m_iteratorPosition.resetGeologyInfoPosition();
  }

  public boolean hasNext()
  {
    boolean result = false;
    if((this.m_metaData.length - 1) >
this.m_iteratorPosition.getGeologyInfoPosition())
      result = true;
    System.out.println("GeoCodeView hasNext(): " + String.valueOf(result));
    return result;
  }

  public void loadNext()
  {
    this.m_iteratorPosition.incrementGeologyInfoPosition();
  }

  public void postIterate()
  {
  }
}

This just writes out mostly id attributes at the moment, keeping track of
the iterations, data will follow.

To find out myself something more, a pointer where there is a simple
introduction to logging in Barracuda might be helpful. By simple I mean
something like:
- Get those jars
- Put them there
- Replace <foo> with <bar> where <foo> means <baz>
- Restart Tomcat

Then I would already thank for the interest from your part. I like to point
out that the Baccaruda approach looks very promising to me, even though I
only looked at the template part until now. Thank you also for this.

Best regards,	Werner