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package com.vaadin.tests.components.table;
import java.lang.reflect.InvocationTargetException;
import com.vaadin.event.ListenerMethod.MethodException;
import com.vaadin.server.ServerRpcManager.RpcInvocationException;
import com.vaadin.server.VaadinSession;
import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.Button;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.Notification;
import com.vaadin.v7.data.Item;
import com.vaadin.v7.data.Property;
import com.vaadin.v7.data.util.IndexedContainer;
import com.vaadin.v7.ui.Table;
import com.vaadin.v7.ui.Table.CacheUpdateException;
import com.vaadin.v7.ui.Table.ColumnGenerator;
public class TableWithBrokenGeneratorAndContainer extends TestBase {
private CheckBox brokenContainer = new CheckBox("Broken container");
private CheckBox brokenGenerator = new CheckBox("Broken generator");
private CheckBox clearTableOnError = new CheckBox("Clear Table on Error");
/**
* Container which throws an exception on every fifth call to
* {@link #getContainerProperty(Object, Object)}.
*
* @author Vaadin Ltd
* @since 7.0
*
*/
public class BrokenContainer extends IndexedContainer {
private int counter = 0;
public BrokenContainer() {
super();
}
@Override
public Property getContainerProperty(Object itemId, Object propertyId) {
if (counter++ % 5 == 0
&& Boolean.TRUE.equals(brokenContainer.getValue())) {
throw new RuntimeException(getClass().getSimpleName()
+ " cannot fetch the property for " + itemId + "/"
+ propertyId + " right now");
}
return super.getContainerProperty(itemId, propertyId);
}
}
public class BrokenColumnGenerator implements ColumnGenerator {
private int brokenInterval;
private int counter = 0;
public BrokenColumnGenerator(int brokenInterval) {
this.brokenInterval = brokenInterval;
}
@Override
public Object generateCell(Table source, Object itemId,
Object columnId) {
if (counter++ % brokenInterval == 0
&& Boolean.TRUE.equals(brokenGenerator.getValue())) {
throw new IllegalArgumentException(
"Broken generator for " + itemId + "/" + columnId);
} else {
return "Generated " + itemId + "/" + columnId;
}
}
}
@Override
protected void setup() {
clearTableOnError.addValueChangeListener(event -> {
Boolean value = clearTableOnError.getValue();
setErrorHandler(value != null ? value : false);
});
final Table table = new Table("Semi-broken table");
table.setContainerDataSource(createBrokenContainer(10, 4));
table.addGeneratedColumn("Gen", new BrokenColumnGenerator(4));
table.setPageLength(20);
Button refreshTableCache = new Button("Refresh table cache", event -> {
table.markAsDirty();
table.refreshRowCache();
});
addComponent(refreshTableCache);
addComponent(brokenContainer);
addComponent(brokenGenerator);
addComponent(clearTableOnError);
addComponent(table);
}
protected void setErrorHandler(boolean enabled) {
if (enabled) {
VaadinSession.getCurrent().setErrorHandler(event -> {
Throwable t = event.getThrowable();
if (t instanceof RpcInvocationException) {
t = t.getCause();
if (t instanceof InvocationTargetException) {
t = t.getCause();
if (t instanceof MethodException) {
t = t.getCause();
if (t instanceof CacheUpdateException) {
Table table = ((CacheUpdateException) t)
.getTable();
table.removeAllItems();
Notification.show(
"Problem updating table. Please try again later",
Notification.Type.ERROR_MESSAGE);
}
}
}
}
});
} else {
VaadinSession.getCurrent().setErrorHandler(this);
}
}
private BrokenContainer createBrokenContainer(int rows, int cols) {
BrokenContainer container = new BrokenContainer();
for (int j = 1; j <= cols; j++) {
container.addContainerProperty("prop" + j, String.class, null);
}
for (int i = 1; i <= rows; i++) {
Item item = container.addItem("item" + i);
for (int j = 1; j <= cols; j++) {
item.getItemProperty("prop" + j)
.setValue("item" + i + "/prop" + j);
}
}
return container;
}
@Override
protected Integer getTicketNumber() {
return 10312;
}
@Override
protected String getDescription() {
return "A Table should not show 'Internal Error' just because a column generator or container throws an exception during filling of the cache";
}
}
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