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/*******************************************************************************
 * Copyright (c) 2009 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.framework.core.model.internal.fields;

import java.util.Collection;
import org.eclipse.osee.framework.core.exception.OseeCoreException;
import org.eclipse.osee.framework.core.model.AbstractOseeField;
import org.eclipse.osee.framework.jdk.core.util.Compare;

/**
 * @author Roberto E. Escobar
 */
public class CollectionField<T> extends AbstractOseeField<Collection<T>> {

   private final Collection<T> items;

   public CollectionField(Collection<T> items) {
      super();
      this.items = items;
   }

   @Override
   public Collection<T> get() throws OseeCoreException {
      return items;
   }

   @Override
   public void set(Collection<T> input) throws OseeCoreException {
      Collection<T> checked = checkInput(input);
      boolean isDifferent = Compare.isDifferent(get(), checked);
      if (isDifferent) {
         items.clear();
         items.addAll(checked);
      }
      isDirty |= isDifferent;
   }

   protected Collection<T> checkInput(Collection<T> input) throws OseeCoreException {
      return input;
   }

}