Re: CellTable & Proxy !

Hi Rogelio, below the code i used to create my CellTable populated by dataset of ValueProxy, received via request factory (onClickGetList method). I can show data in the CellTable also the pager everything work fine. The problem occur when i want to update a row via SelectionCell, it take a long time before update and some time i get (remote connection lost) or (Stack overflow; to increase the stack size, use the -Xss flag at startup (java -Xss1M ...))

To be sure which part of code cause the problem, i put a message inside getValue method and update method, i found out an several call to getValue method and NO call to update method.

PS:

• ValueProxy (ConceptProxy) that i received do not have TypeConcept, i want to set it via SellectionCell That's why i return "Unknown" if TypeConcept == Null in getValue method
  
• My GWT app based on Activities & Places and the code below is in a view implementation that extend Composite class and implement the view interface.
  

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private final CellTable<ConceptProxy> cellTable = cellTable = new CellTable<>();

private SimplePager pager;

private void prepareCellTable(){

cellTable.setWidth("100%", true);

cellTable.setStyleName("style.cellTable");

cellTable.setAutoHeaderRefreshDisabled(true);

cellTable.setAutoFooterRefreshDisabled(true);

TextColumn<ConceptProxy> conceptNameColumn = new TextColumn<ConceptProxy>() {

public String getValue(ConceptProxy concept) {

return concept.getIntituleConcept();

}

};

final List<String> conceptType = new LinkedList<String>();

conceptType.add("Goal");

conceptType.add("Input");

conceptType.add("Output");

conceptType.add("Precondition");

conceptType.add("Postcondition");

List<String> conceptTypeNamesList = new LinkedList<String>();

for (String type : conceptType) {

conceptTypeNamesList.add(type);

}

SelectionCell conceptTypeSelectionCell = new SelectionCell(conceptTypeNamesList);

Column<ConceptProxy, String> conceptTypeColumn = new Column<ConceptProxy, String>(conceptTypeSelectionCell) {

public String getValue(ConceptProxy concept) {

System.out.println(">>concept type update method");

return (concept.getTypeConcept() == null) ? "Unknown" : concept.getTypeConcept();

}

};

conceptTypeColumn.setFieldUpdater(new FieldUpdater<ConceptProxy, String>() {

public void update(int index, ConceptProxy concept, String value) {

System.out.println(">>concept type getValue method"); 

concept.setTypeConcept(value);

presenter.updateConcept(currentConceptProxy);

}

});

cellTable.addColumn(conceptNameColumn, "Concept Name");

cellTable.addColumn(conceptTypeColumn, "Concept Type");

cellTable.setPageSize(6);

SimplePager.Resources pagerResources = GWT.create(SimplePager.Resources.class);

pager = new SimplePager(TextLocation.CENTER, pagerResources, false, 0,true);

pager.setDisplay(cellTable);

}

@UiHandler("getList")

public void onClickGetList(ClickEvent event){

prepareCellTable();

Receiver<List<ConceptProxy>> rec = new Receiver<List<ConceptProxy>>() {

public void onSuccess(List<ConceptProxy> response) {

listProvider = new ListDataProvider<ConceptProxy>();

listProvider.setList(response);

listProvider.addDataDisplay(cellTable);

cellTableHolder.add(cellTable);

pagerHolder.add(pager);

classementPanel.setVisible(true);

}

};

presenter.getAllConcepts().fire(rec);

}

Le mardi 10 juin 2014 20:57:58 UTC+1, Marouan MARZOUGA a écrit :

Hi everyone,

I have a view that contain a cellTable populated by Proxys (type ValueProxy) received from server side using RequestFactory. I can display rows but some problems* occur when i want to update a row via SelectionCell. The same example work when using a real model not proxy using GWT-RPC.

*Plenty of problem occur such as:

+ Take a long time before update.

+ Update is possible 1 time.

+ Remote connection lost.

+ Stack overflow; to increase the stack size, use the -Xss flag at startup (java -Xss1M ...)

Is there a difference between using a real model or proxy in CellTable.

Any ideas, thanks.

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