content: /*******************************************************************************
   * Copyright 2017 Bstek
   *
   * 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 com.bstek.ureport.expression.function.date;
  
  import com.bstek.ureport.build.Context;
  import com.bstek.ureport.exception.ReportComputeException;
  import com.bstek.ureport.expression.model.data.ExpressionData;
  import com.bstek.ureport.model.Cell;
  
  import java.util.Calendar;
  import java.util.List;
  
  /**
   * @author
   * @since 1月22日
   */
  public class WeekFunction extends CalendarFunction {
  
  	@Override
  	public Object execute(List<ExpressionData<?>> dataList, Context context,Cell currentCell) {
  		Calendar c = buildCalendar(dataList);
  		int weekDay=c.get(Calendar.DAY_OF_WEEK);
  		boolean isFirstSunday = (c.getFirstDayOfWeek() == Calendar.SUNDAY);
  		if(isFirstSunday){
  			weekDay = weekDay - 1;
  			if(weekDay == 0){
  				weekDay = 7;
  			}
  		}
  		switch(weekDay){
  		case 1:
  			return "星期一";
  		case 2:
  			return "星期二";
  		case 3:
  			return "星期三";
  		case 4:
  			return "星期四";
  		case 5:
  			return "星期五";
  		case 6:
  			return "星期六";
  		case 7:
  			return "星期日";
  		}
  		throw new ReportComputeException("Unknow week day :"+weekDay);
  	}
  
  	@Override
  	public String name() {
  		return "week";
  	}
  }
  