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package com.vaadin.tests.components.grid;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import java.util.List;
import java.util.Locale;
import java.util.stream.Collectors;
import org.junit.Test;
import com.vaadin.data.provider.DataProvider;
import com.vaadin.data.provider.ListDataProvider;
import com.vaadin.data.provider.Query;
import com.vaadin.tests.data.bean.Person;
import com.vaadin.tests.data.bean.Sex;
import com.vaadin.ui.Grid;
import com.vaadin.ui.Grid.Column;
public class GridValueProvider {
@Test
public void getExplicitValueProvider() {
Grid<Person> grid = new Grid<>();
Column<Person, String> col = grid.addColumn(
person -> person.getFirstName() + " " + person.getLastName());
Person person = new Person("first", "last", "email", 123, Sex.UNKNOWN,
null);
assertEquals("first last", col.getValueProvider().apply(person));
}
@Test
public void getBeanColumnValueProvider() {
Grid<Person> grid = new Grid<>(Person.class);
Column<Person, String> col = (Column<Person, String>) grid
.getColumn("email");
Person person = new Person("first", "last", "eeemaaail", 123,
Sex.UNKNOWN, null);
assertEquals("eeemaaail", col.getValueProvider().apply(person));
}
@Test
public void reuseValueProviderForFilter() {
Grid<Person> grid = new Grid<>(Person.class);
Column<Person, String> col = (Column<Person, String>) grid
.getColumn("email");
Person lowerCasePerson = new Person("first", "last", "email", 123,
Sex.UNKNOWN, null);
Person upperCasePerson = new Person("FIRST", "LAST", "EMAIL", 123,
Sex.UNKNOWN, null);
ListDataProvider<Person> persons = DataProvider.ofItems(lowerCasePerson,
upperCasePerson);
persons.addFilter(col.getValueProvider(),
value -> value.toUpperCase(Locale.ROOT).equals(value));
List<Person> queryPersons = persons.fetch(new Query<>())
.collect(Collectors.toList());
assertEquals(1, queryPersons.size());
assertSame(upperCasePerson, queryPersons.get(0));
}
}
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