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CapedwarfSearchWorkCreator.java
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/
CapedwarfSearchWorkCreator.java
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.capedwarf.datastore;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.google.appengine.api.datastore.Entity;
import org.hibernate.search.backend.spi.Work;
import org.hibernate.search.backend.spi.WorkType;
import org.infinispan.query.impl.DefaultSearchWorkCreator;
import org.jboss.capedwarf.shared.config.ApplicationConfiguration;
import org.jboss.capedwarf.shared.config.IndexesXml;
import org.jboss.capedwarf.shared.datastore.DatastoreConstants;
/**
* @author <a href="mailto:mluksa@redhat.com">Marko Luksa</a>
*/
public class CapedwarfSearchWorkCreator extends DefaultSearchWorkCreator<Object> {
@Override
public Collection<Work<Object>> createPerEntityWorks(Object value, Serializable id, WorkType workType) {
if (id == null) {
return super.createPerEntityWorks(value, id, workType);
}
Entity entity = (Entity) value;
List<Work<Object>> works = new ArrayList<>(super.createPerEntityWorks(value, id, workType));
for (IndexesXml.Index index : ApplicationConfiguration.getInstance().getIndexesXml().getIndexes().values()) {
if (index.getKind().equals(entity.getKind())) {
int i = 0;
for (Entity explodedEntity : explodeEntity(entity, index)) {
String explodedId = id + DatastoreConstants.SEPARATOR + i++ + DatastoreConstants.SEPARATOR + index.getName();
works.add(new Work<Object>(explodedEntity, explodedId, workType));
}
}
}
return works;
}
private List<Entity> explodeEntity(Entity entity, IndexesXml.Index index) {
List<Entity> entities = new ArrayList<>();
entities.add(entity);
for (IndexesXml.Property property : index.getProperties()) {
String propertyName = property.getName();
if (!entity.hasProperty(propertyName)) {
return Collections.emptyList();
}
Object propertyValue = entity.getProperty(propertyName);
if (propertyValue instanceof Collection) {
Collection<?> values = (Collection<?>) propertyValue;
Set<?> distinctValues = new HashSet<>(values);
List<Entity> newEntities = new ArrayList<>();
for (Object value : distinctValues) {
for (Entity e : entities) {
Entity newE = new Entity(e.getKey());
newE.setPropertiesFrom(e);
newE.setProperty(propertyName, value);
newEntities.add(newE);
}
}
entities = newEntities;
}
}
return entities;
}
}