com.github.bordertech.wcomponents.examples.datatable.DataTableBeanProviderExample Maven / Gradle / Ivy
package com.github.bordertech.wcomponents.examples.datatable;
import com.github.bordertech.wcomponents.AbstractBeanTableDataModel;
import com.github.bordertech.wcomponents.BeanProvider;
import com.github.bordertech.wcomponents.BeanProviderBound;
import com.github.bordertech.wcomponents.WContainer;
import com.github.bordertech.wcomponents.WButton;
import com.github.bordertech.wcomponents.WDataTable;
import com.github.bordertech.wcomponents.WTableColumn;
import com.github.bordertech.wcomponents.WText;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.LogFactory;
/**
* This example shows the use of a {@link WDataTable} with a list of beans.
*
* @author Yiannis Paschalidis
* @since 1.0.0
*/
public class DataTableBeanProviderExample extends WContainer {
/**
* A fake "application cache", that holds the data which is displayed by the table.
*/
private static final Map APPLICATION_CACHE = new HashMap<>();
/**
* Creates a DataTableBeanExample.
*/
public DataTableBeanProviderExample() {
// Create the example data and add it to the "application cache"
final String cacheKey = "dummyCacheKey";
APPLICATION_CACHE.put(cacheKey, createExampleData());
setBeanProvider(new BeanProvider() {
@Override
public Object getBean(final BeanProviderBound beanProviderBound) {
return APPLICATION_CACHE.get(cacheKey);
}
});
WDataTable table = createTable();
table.setDataModel(new PersonDataModel());
table.setBeanProperty(".");
add(table);
table.addAction(new WButton("Refresh"));
}
/**
* Creates and configures the table to be used by the example. The table is configured with global rather than user
* data. Although this is not a realistic scenario, it will suffice for this example.
*
* @return a new configured table.
*/
private WDataTable createTable() {
WDataTable tbl = new WDataTable();
tbl.addColumn(new WTableColumn("First name", new WText()));
tbl.addColumn(new WTableColumn("Last name", new WText()));
tbl.addColumn(new WTableColumn("DOB", new WText()));
return tbl;
}
/**
* Creates the example data.
*
* @return the example data.
*/
private List createExampleData() {
List data = new ArrayList<>(3);
SimpleDateFormat sdf = new SimpleDateFormat("dd/mm/yyyy");
try {
data.add(new PersonBean("Joe", "Bloggs", sdf.parse("01/02/1973")));
data.add(new PersonBean("Jane", "Bloggs", sdf.parse("04/05/1976")));
data.add(new PersonBean("Kid", "Bloggs", sdf.parse("31/12/1999")));
} catch (ParseException e) {
LogFactory.getLog(DataTableBeanExample.class).error("Failed to create test data", e);
}
return data;
}
/**
* An example data model that shows how to display data from a bean.
*
* @author Yiannis Paschalidis
*/
public static final class PersonDataModel extends AbstractBeanTableDataModel {
/**
* The first name column id.
*/
private static final int FIRST_NAME = 0;
/**
* The last name column id.
*/
private static final int LAST_NAME = 1;
/**
* The date of birth name column id.
*/
private static final int DOB = 2;
/**
* {@inheritDoc}
*/
@Override
public int getRowCount() {
List bean = (List) getBean();
return bean.size();
}
/**
* {@inheritDoc}
*/
@Override
public Object getValueAt(final int row, final int col) {
List bean = (List) getBean();
PersonBean person = bean.get(row);
switch (col) {
case FIRST_NAME:
return person.getFirstName();
case LAST_NAME:
return person.getLastName();
case DOB: {
if (person.getDateOfBirth() == null) {
return null;
}
return new SimpleDateFormat("d MMM yyyy").format(person.getDateOfBirth());
}
default:
return null;
}
}
}
}