We encountered an odd issue like this with one of the GWT samples. It turned out that swapping the order of the loading of the GWT module and other scripts fixed the problem. Here's what we did:
http://gwt-code-reviews.appspot.com/486802/show On Jul 8, 9:35 pm, kawanka <[email protected]> wrote: > Hello, > > I am using GWT and its visualization API wrapper. I am using GWT > 2.1.0.M2 and gwt-visualization-1.1.0. Things work perfectly when I > load my application for the first time, in the browser and click a > button to load the visualization API and display it in the GUI. > However it only works from the initial page load. If I navigate a bit > and click the button again to re-load the data, I get a timeout > error. > > If I use a google datasource like : > > http://spreadsheets.google.com/tq?key=pWiorx-0l9mwIuwX5CbEALA&range=A... > > My app can reload the content and never times out. > > Has anyone ever seen this before? > > I have a servlet which returns a string: > > Here is the servlet code : > > protected void doGet(HttpServletRequest request, HttpServletResponse > response) throws ServletException, IOException { > > response.setContentType("application/json"); > > response.getWriter().write("google.visualization.Query.setResponse({version > :'0.6',reqId:'0',status:'ok',sig:'106459472',table: > {cols:[{id:'A',label:'Source',type:'string',pattern:''}, > {id:'B',label:'Percent',type:'number',pattern:'#0.01%'}],rows:[{c: > [{v:'This'},{v:0.37,f:'37.00%'}]},{c:[{v:'That'},{v:0.25,f:'25.00%'}]}, > {c:[{v:'The Other'},{v:0.23,f:'23.00%'}]},{c:[{v:'Thing'},{v: > 0.06,f:'6.00%'}]},{c:[{v:'Biomass'},{v:0.04,f:'4.00%'}]},{c: > [{v:'Hydro'},{v:0.03,f:'3.00%'}]},{c:[{v:'Solar Heat'},{v: > 0.005,f:'0.50%'}]},{c:[{v:'Wind'},{v:0.003,f:'0.30%'}]},{c: > [{v:'Geothermal'},{v:0.002,f:'0.20%'}]},{c:[{v:'Biofuels'},{v: > 0.002,f:'0.20%'}]},{c:[{v:'Solar photovoltaic'},{v: > 4.0E-4,f:'0.04%'}]}]}});"); > > } > > I have another project: An eclipse GWT project which uses the > visualization API wrapper to fetch this data source. The > VerticalPanel's constructor looks like this : > > public AlertsListPanel() { > initWidget(uiBinder.createAndBindUi(this)); > String dataUrl = "http://localhost:8080/TestServlet/Test";; > OnLoadAPIForTable onLoadCallback = new OnLoadAPIForTable(dataUrl); > VisualizationUtils.loadVisualizationApi(onLoadCallback, > Table.PACKAGE); > > } > > The callback class looks like this : > > private class OnLoadAPIForTable implements Runnable{ > private StatusPopUp popUp; > private String url; > > public OnLoadAPIForTable (String url){ > this.popUp = new StatusPopUp("Loading"); > this.url = url; > } > > @Override > public void run(){ > Query query = Query.create(url); > > // Send the query. > query.send(new Callback() { > public void onResponse(QueryResponse response) { > if (response.isError()) { > Window.alert(response.getMessage()); > popUp.clean(); > } else { > // Get the data from the QueryResponse. > DataTable data = response.getDataTable(); > > // Create the Options object. > Options options = createTableOptions(); > > // Create a PieChart and add it to a panel. > Table tbl = new Table(data, options); > tbl.addSelectHandler(createSelectHandler(tbl)); > dataVisualization.add(tbl); > popUp.clean(); > } > } > }); > } > > private Table.Options createTableOptions() { > Table.Options options = Table.Options.create(); > options.setAlternatingRowStyle(true); > options.setHeight("400px"); > options.setWidth("800"); > options.setPage(Table.Options.Policy.ENABLE); > options.setPageSize(10); > return options; > } > > private SelectHandler createSelectHandler(final Table chart) { > return new SelectHandler() { > @Override > public void onSelect(SelectEvent event) { > String message = ""; > > // May be multiple selections. > JsArray<Selection> selections = chart.getSelections(); > > for (int i = 0; i < selections.length(); i++) { > // add a new line for each selection > message += i == 0 ? "" : "\n"; > > Selection selection = selections.get(i); > > if (selection.isCell()) { > // isCell() returns true if a cell has been > selected. > > // getRow() returns the row number of the > selected cell. > int row = selection.getRow(); > // getColumn() returns the column number of the > selected > cell. > int column = selection.getColumn(); > message += "cell " + row + ":" + column + " > selected"; > } else if (selection.isRow()) { > // isRow() returns true if an entire row has been > selected. > > // getRow() returns the row number of the > selected row. > int row = selection.getRow(); > message += "row " + row + " selected"; > } else { > // unreachable > message += "Pie chart selections should be either > row > selections or cell selections."; > message += " Other visualizations support column > selections as well."; > } > } > > Window.alert(message); > } > }; > } > } > > Thanks in advance for any suggestions on helping me understand this > timeout issue. > > R. -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. 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