Want to refresh page and show curently added entry to database. But does not
work. To trap down the reason I've created two applications which are very
similiar. Both show a java.util.List - on is filled from a database the
other one immediately from the program (List<String[]>.add()). The second
one is fine, the first one is in no way dynamic; even Browser refresh does
not display the new entry; I have to call the whole URL again.
What is wrong with my assumptions. Any hint is appreciated.
brgds
Ulrich
*Database-Sample:*
package com.mycompany;
import java.io.IOException;
import java.util.Date;
import java.util.List;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import de.gombers.accounts.dao.mybatis.ListData;
import de.gombers.accounts.dao.mybatis.ListDataDAO;
public class HomePage extends WebPage {
private static final Logger LOGGER =
LoggerFactory.getLogger(HomePage.class);
private static final long serialVersionUID = 1L;
private List<ListData> dataList;
public HomePage(final PageParameters parameters) {
super(parameters);
Form form = new Form("form");
PropertyModel pm = new PropertyModel(this, "dataList");
List<ListData> werte = (List<ListData>) pm.getObject();
final ListView listView = new ListView("listentries", werte ) {
@Override
protected void populateItem(ListItem item) {
final ListData data= (ListData)
item.getModelObject();
item.add(new Label("mydate", new Model() {
@Override
public String getObject() {
return
data.getMyDate().toString();
}
}));
item.add(new Label("mytext", new Model(""){
@Override
public String getObject() {
return data.getMyText();
}
}));
}
};
listView.setOutputMarkupId(true);
form.add(listView);
AjaxButton submit = new AjaxButton("addEntry"){
@Override
protected void onSubmit(AjaxRequestTarget
target, Form<?> form) {
ListData data = new ListData();
data.setMyData(new Date());
data.setMyText("myText");;
try {
new ListDataDAO().insertNewEntry(data);
} catch (IOException e) {
// TODO Auto-generated catch block
//
e.printStackTrace();
}
try {
dataList=new ListDataDAO().getAllData();
} catch (IOException e) {
LOGGER.error("", e);
}
target.add(form);
}
};
form.add(submit);
add(form);
}
public List<ListData> getDataList() {
try {
dataList=new ListDataDAO().getAllData();
LOGGER.info("ListDataSize2={}", dataList.size());
} catch (IOException e) {
LOGGER.error("", e);
}
return dataList;
}
}
*ListArray-Sample:*
package com.mycompany;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HomePage2 extends WebPage {
private static final Logger LOGGER =
LoggerFactory.getLogger(HomePage.class);
private static final long serialVersionUID = 1L;
private List<String[]> dataList = new ArrayList() ;
public HomePage2(final PageParameters parameters) {
super(parameters);
Form form = new Form("form");
dataList.add(new String[]{new Date().toString(), "Line no 1 "});
PropertyModel pm = new PropertyModel(this, "dataList");
List<String[]> werte = (List<String[]>) pm.getObject();
final ListView listView = new ListView("listentries", werte ) {
@Override
protected void populateItem(ListItem item) {
final String[] data= (String[])
item.getModelObject();
item.add(new Label("mydate", new Model() {
@Override
public String getObject() {
return data[0];
}
}));
item.add(new Label("mytext", new Model(""){
@Override
public String getObject() {
return data[1];
}
}));
}
};
listView.setOutputMarkupId(true);
form.add(listView);
AjaxButton submit = new AjaxButton("addEntry"){
@Override
protected void onSubmit(AjaxRequestTarget
target, Form<?> form) {
LOGGER.info("Submit Button pressed");
String[] data = new String[2];
data[0]=new Date().toString();
data[1]=String.format("Line no %s",
dataList.size());
dataList.add(data);
target.add(form);
}
};
form.add(submit);
add(form);
}
public List<String[]> getDataList() {
return dataList;
}
}
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