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A Java library for reading and writing General Transit Feed Spec feeds

There is a newer version: 1.3.4

/**
 * Copyright (C) 2011 Brian Ferris 
 *
 * 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.onebusaway.gtfs.serialization.mappings;

import org.onebusaway.csv_entities.CsvEntityContext;
import org.onebusaway.csv_entities.exceptions.MissingRequiredFieldException;
import org.onebusaway.csv_entities.schema.BeanWrapper;
import org.onebusaway.csv_entities.schema.DefaultFieldMapping;
import org.onebusaway.csv_entities.schema.EntitySchemaFactory;
import org.onebusaway.csv_entities.schema.FieldMapping;
import org.onebusaway.csv_entities.schema.FieldMappingFactory;
import org.onebusaway.gtfs.model.AgencyAndId;

import java.util.Collection;
import java.util.Map;

public class AgencyIdFieldMappingFactory implements FieldMappingFactory {

  public FieldMapping createFieldMapping(EntitySchemaFactory schemaFactory,
      Class entityType, String csvFieldName, String objFieldName,
      Class objFieldType, boolean required) {

    return new FieldMappingImpl(entityType, csvFieldName, objFieldName,
        String.class, required);
  }

  private class FieldMappingImpl extends DefaultFieldMapping {

    public FieldMappingImpl(Class entityType, String csvFieldName,
        String objFieldName, Class objFieldType, boolean required) {
      super(entityType, csvFieldName, objFieldName, objFieldType, required);
    }

    @Override
    public void getCSVFieldNames(Collection names) {
      names.add(_csvFieldName + "_agencyId");
      names.add(_csvFieldName + "_id");
    }

    @Override
    public void translateFromObjectToCSV(CsvEntityContext context,
        BeanWrapper object, Map csvValues) {
      AgencyAndId id = (AgencyAndId) object.getPropertyValue(_objFieldName);
      csvValues.put(_csvFieldName + "_agencyId", id.getAgencyId());
      csvValues.put(_csvFieldName + "_id", id.getId());
    }

    @Override
    public void translateFromCSVToObject(CsvEntityContext context,
        Map csvValues, BeanWrapper object) {

      String agencyId = (String) csvValues.get(_csvFieldName + "_agencyId");
      String id = (String) csvValues.get(_csvFieldName + "_id");
      boolean missing = (agencyId == null || agencyId.isEmpty())
          || (id == null || id.isEmpty());
      if (missing) {
        if (_required)
          throw new MissingRequiredFieldException(_entityType, _csvFieldName);
        return;
      }
      AgencyAndId agencyAndId = new AgencyAndId(agencyId, id);
      object.setPropertyValue(_objFieldName, agencyAndId);
    }
  }
}