# HandlingQueries.java

    /*
     * Copyright 2011 Marc Grue.
     *
     * Licensed  under the  Apache License,  Version 2.0  (the "License");
     * you may not use  this file  except in  compliance with the License.
     * You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed  under the  License is distributed on an "AS IS" BASIS,
     * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
     * implied.
     *
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    package org.qi4j.sample.dcicargo.sample_b.communication.query;

    import java.util.ArrayList;
    import java.util.List;
    import org.qi4j.api.query.Query;
    import org.qi4j.api.query.QueryBuilder;
    import org.qi4j.sample.dcicargo.sample_b.data.entity.CargoEntity;
    import org.qi4j.sample.dcicargo.sample_b.data.structure.handling.HandlingEventType;
    import org.qi4j.sample.dcicargo.sample_b.data.structure.voyage.Voyage;
    import org.qi4j.sample.dcicargo.sample_b.infrastructure.model.Queries;

    import static org.qi4j.api.query.QueryExpressions.orderBy;
    import static org.qi4j.api.query.QueryExpressions.templateFor;

    /**
     * Handling queries
     *
     * Used by the communication layer only. Can change freely according to presentation needs.
     */
    public class HandlingQueries extends Queries
    {
        public List<String> voyages()
        {
            QueryBuilder<Voyage> qb = qbf.newQueryBuilder( Voyage.class );
            Query<Voyage> voyages = uowf.currentUnitOfWork().newQuery( qb )
                .orderBy( orderBy( templateFor( Voyage.class ).voyageNumber() ) );

            List<String> voyageList = new ArrayList<String>();
            for( Voyage voyage : voyages )
            {
                voyageList.add( voyage.voyageNumber().get().number().get() );
            }
            return voyageList;
        }

        public List<String> cargoIds()
        {
            QueryBuilder<CargoEntity> qb = qbf.newQueryBuilder( CargoEntity.class );
            Query<CargoEntity> cargos = uowf.currentUnitOfWork().newQuery( qb )
                .orderBy( orderBy( templateFor( CargoEntity.class ).trackingId().get().id() ) );
            List<String> cargoList = new ArrayList<String>();
            for( CargoEntity cargo : cargos )
            {
                cargoList.add( cargo.trackingId().get().id().get() );
            }
            return cargoList;
        }

        public List<String> eventTypes()
        {
            List<String> eventTypes = new ArrayList<String>();
            for( HandlingEventType eventType : HandlingEventType.values() )
            {
                eventTypes.add( eventType.name() );
            }
            return eventTypes;
        }
    }