DomainContainer.java

/*
 * Copyright 2011 Instituto Superior Tecnico
 * 
 *      https://fenix-ashes.ist.utl.pt/
 * 
 *   This file is part of the vaadin-framework.
 *
 *   The vaadin-framework Infrastructure is free software: you can
 *   redistribute it and/or modify it under the terms of the GNU Lesser General
 *   Public License as published by the Free Software Foundation, either version
 *   3 of the License, or (at your option) any later version.*
 *
 *   vaadin-framework is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with vaadin-framework. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package pt.ist.vaadinframework.data.reflect;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.joda.time.DateTime;
import org.joda.time.Interval;

import pt.ist.fenixframework.DomainObject;
import pt.ist.fenixframework.plugins.luceneIndexing.DomainIndexer;
import pt.ist.fenixframework.plugins.luceneIndexing.queryBuilder.dsl.BuildingState;
import pt.ist.fenixframework.plugins.luceneIndexing.queryBuilder.dsl.DSLState;
import pt.ist.vaadinframework.VaadinFrameworkLogger;
import pt.ist.vaadinframework.data.AbstractBufferedContainer;
import pt.ist.vaadinframework.data.LuceneContainer;
import pt.ist.vaadinframework.data.metamodel.MetaModel;
import pt.ist.vaadinframework.data.metamodel.PropertyDescriptor;

import com.vaadin.data.Property;
import com.vaadin.data.util.ItemSorter;

public class DomainContainer<Type extends DomainObject> extends AbstractBufferedContainer<Type, Object, DomainItem<Type>>
        implements LuceneContainer {
    private final int maxHits = 1000000;

    public DomainContainer(Property wrapped, Class<? extends Type> elementType, Hint... hints) {
        super(wrapped, elementType, hints);
    }

    public DomainContainer(Class<? extends Type> elementType, Hint... hints) {
        super(elementType, hints);
    }

    public DomainContainer(Collection<Type> elements, Class<? extends Type> elementType, Hint... hints) {
        super(new ArrayList<Type>(elements), elementType, hints);
    }

    @Override
    protected DomainItem<Type> makeItem(Type itemId) {
        return new DomainItem<Type>(itemId, elementType);
    }

    @Override
    protected DomainItem<Type> makeItem(Class<? extends Type> type) {
        return new DomainItem<Type>(type);
    }

    public void setContainerProperties(String... propertyIds) {
        for (String propertyId : propertyIds) {
            PropertyDescriptor propertyDescriptor =
                    MetaModel.findMetaModelForType(getElementType()).getPropertyDescriptor(propertyId);
            addContainerProperty(propertyId, propertyDescriptor.getPropertyType(), propertyDescriptor.getDefaultValue());
        }
    }

    @Override
    public void setItemSorter(ItemSorter itemSorter) {
        super.setItemSorter(itemSorter);
    }

    @Override
    public void search(String filterText) {
        removeAllItems();
        final DSLState expr = createFilterExpression(filterText);
        DateTime start = new DateTime();
        final List<Type> searchResult = (List<Type>) DomainIndexer.getInstance().search(getElementType(), expr, maxHits);
        DateTime check1 = new DateTime();
        addItemBatch(searchResult);
        DateTime check2 = new DateTime();
        VaadinFrameworkLogger.getLogger().debug(
                "container search: " + expr.toString() + " took: " + new Interval(start, check1).toDuration() + " "
                        + new Interval(check1, check2).toDuration() + "(" + new Interval(start, check2).toDuration() + ")");
    }

    protected DSLState createFilterExpression(String filterText) {
        return new BuildingState().matches(filterText);
    }
}