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/*******************************************************************************
* 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;
import java.math.BigDecimal;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import com.bstek.ureport.Utils;
import com.bstek.ureport.build.BindData;
import com.bstek.ureport.build.Context;
import com.bstek.ureport.expression.model.data.BindDataListExpressionData;
import com.bstek.ureport.expression.model.data.ExpressionData;
import com.bstek.ureport.expression.model.data.ObjectExpressionData;
import com.bstek.ureport.expression.model.data.ObjectListExpressionData;
import com.bstek.ureport.model.Cell;
/**
* @author Jacky.gao
* @since 2016年12月27日
*/
public class SumFunction implements Function {
@Override
public Object execute(List<ExpressionData<?>> dataList, Context context,Cell currentCell) {
if(dataList==null || dataList.size()==0){
return null;
}
Object singleData=null;
BigDecimal total=new BigDecimal(0);
for(ExpressionData<?> exprData:dataList){
if(exprData instanceof ObjectListExpressionData){
ObjectListExpressionData listExpr=(ObjectListExpressionData)exprData;
List<?> list=listExpr.getData();
for(Object obj:list){
if(obj==null || StringUtils.isBlank(obj.toString())){
continue;
}
singleData=obj;
BigDecimal bigData=Utils.toBigDecimal(obj);
total=total.add(bigData);
}
}else if(exprData instanceof ObjectExpressionData){
Object obj=exprData.getData();
singleData=obj;
if(obj!=null && StringUtils.isNotBlank(obj.toString())){
BigDecimal bigData=Utils.toBigDecimal(obj);
total=total.add(bigData);
}
}else if(exprData instanceof BindDataListExpressionData){
BindDataListExpressionData data=(BindDataListExpressionData)exprData;
List<BindData> bindDataList=data.getData();
for(BindData bindData:bindDataList){
Object obj=bindData.getValue();
if(obj==null || StringUtils.isBlank(obj.toString())){
continue;
}
singleData=obj;
BigDecimal bigData=Utils.toBigDecimal(obj);
total=total.add(bigData);
}
}
}
if(dataList.size()==1){
if(singleData==null || singleData.equals("")){
return "";
}
}
return total;
}
@Override
public String name() {
return "sum";
}
}