content: /**
   * 	Copyright (c) 2010 Philipp Giese
   * 
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   * 
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   * 
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  package com.orm.androrm.field;
  
  import java.util.ArrayList;
  
  import com.orm.androrm.Filter;
  import com.orm.androrm.Model;
  import com.orm.androrm.QuerySet;
  
  import android.content.Context;
  
  /**
   * This field implicitly assumes Foreign Key relations
   * from the target class to the class implementing
   * the One To Many Field. This way you can walk this
   * relations backwards. 
   * 
   * @author Philipp Giese
   */
  public class OneToManyField<L extends Model, 
  							R extends Model> 
  extends AbstractToManyRelation<L, R> {
  
  	public OneToManyField(Class<L> origin, Class<R> target) {
  		mOriginClass = origin;
  		mTargetClass = target;
  		mValues = new ArrayList<R>();
  	}
  	
  	@Override
  	public QuerySet<R> get(Context context, L origin) {
  		String fieldName = Model.getBackLinkFieldName(mTargetClass, mOriginClass);
  		
  		Filter filter = new Filter();
  		filter.is(fieldName, origin);
  		
  		QuerySet<R> querySet = new QuerySet<R>(context, mTargetClass);
  		querySet.filter(filter);
  		
  		return querySet;
  	}
  }
  