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/**
 * Copyright (C) 2007  Bull S. A. S.
 * Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois
 * This library 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
 * version 2.1 of the License.
 * This library 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
 * program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA  02110-1301, USA.
 **/
package org.ow2.bonita.definition;

import java.util.Set;

import org.ow2.bonita.facade.QueryAPIAccessor;
import org.ow2.bonita.facade.QueryRuntimeAPI;
import org.ow2.bonita.facade.runtime.ActivityInstance;
import org.ow2.bonita.util.AccessorUtil;
import org.ow2.bonita.util.BonitaException;
import org.ow2.bonita.util.BonitaRuntimeException;
import org.ow2.bonita.util.ExceptionManager;


/**
 * Specific class for Performer Assignment with variable type (used by the engine).
 * @author Guillaume Porcher
 *
 */
public class VariablePerformerAssign implements PerformerAssign {

  private String variableId = null;

  public String selectUser(QueryAPIAccessor accessor, ActivityInstance activityInstance, Set candidates) throws Exception {
    final QueryRuntimeAPI queryRuntimeAPI = accessor.getQueryRuntimeAPI(AccessorUtil.QUERYLIST_JOURNAL_KEY);
    try {
      return (String) queryRuntimeAPI.getVariable(activityInstance.getUUID(), variableId);
    } catch (BonitaException e) {
    	String message = ExceptionManager.getInstance().getFullMessage("ba_VPA_1", variableId);
      throw new BonitaRuntimeException(message, e);
    }
  }

  public String getVariableId() {
    return variableId;
  }
  public void setVariableId(String variableId) {
    this.variableId = variableId;
  }

}