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88 lines
3.3 KiB
88 lines
3.3 KiB
6 years ago
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package com.fanruan.api.cal;
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import com.fanruan.api.cal.namespace.SheetInterval4CheckNameSpace;
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import com.fanruan.api.session.SessionKit;
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import com.fr.base.ParameterMapNameSpace;
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import com.fr.base.TableDataNameSpace;
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import com.fr.data.TableDataSource;
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import com.fr.report.report.Report;
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import com.fr.script.Calculator;
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import com.fr.stable.StringUtils;
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import com.fr.stable.script.CalculatorProvider;
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import com.fr.stable.script.NameSpace;
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import com.fr.stable.web.SessionProvider;
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import com.fr.third.javax.annotation.Nullable;
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import com.fr.web.core.ReportSessionIDInfor;
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import com.fr.web.core.TemplateSessionIDInfo;
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import com.fr.web.session.SessionIDInfo;
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import java.util.Map;
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/**
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* @ClassName CalculatorKit
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* @Author zack
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* @Date 2019/8/23
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* @Version 10.0
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* 帆软算子工具类（主要用于公式计算）
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*/
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public class CalculatorKit {
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/**
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* 创建一个基础算子（基础算子仅支持函数计算.比如SUM()函数）
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*
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* @return 算子
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*/
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public static CalculatorProvider createCalculator() {
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return Calculator.createCalculator();
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}
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/**
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* 创建一个带参数计算的算子
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* （可以支持计算入参paraMap里面相关的带参函数，
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* 比如paraMap带有参数a->1,b->2,CalculatorKit.createCalculator(paraMap).evalValue("SUM（a，b）")输出3）
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*
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* @return 算子
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*/
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public static CalculatorProvider createCalculator(Map paraMap) {
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ParameterMapNameSpace nameSpace = ParameterMapNameSpace.create(paraMap);
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CalculatorProvider calculator = createCalculator();
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calculator.pushNameSpace(nameSpace);
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return calculator;
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}
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/**
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* 创建一个支持单元格以及模板数据集计算的算子
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*
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* @param sessionID 模板的sessionID
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* @param paraMap 其他参数
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* @return
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*/
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public static CalculatorProvider createCalculator(@Nullable String sessionID, @Nullable Map paraMap) {
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ParameterMapNameSpace nameSpace = ParameterMapNameSpace.create(paraMap);
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CalculatorProvider calculator = createCalculator();
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calculator.pushNameSpace(nameSpace);
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if (StringUtils.isNotEmpty(sessionID)) {
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SessionProvider rsii = SessionKit.getSession(sessionID);
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if (rsii != null) {
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if (rsii instanceof TemplateSessionIDInfo) {
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//支持模板单元格值计算
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calculator.setAttribute(TableDataSource.KEY, ((TemplateSessionIDInfo) rsii).getTableDataSource());
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calculator.pushNameSpace(SessionIDInfo.asNameSpace(sessionID));
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if (rsii instanceof ReportSessionIDInfor) {
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//支持跨sheet计算
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calculator.pushNameSpace(SheetInterval4CheckNameSpace.getInstance());
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calculator.setAttribute(Report.KEY, ((ReportSessionIDInfor) rsii).getReport2Show(0));
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}
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}
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}
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}
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return calculator;
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}
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/**
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* 返回服务器数据集的算子空间（可以通过调用calculator.pushNameSpace()将算子空间塞进算子实例，从而支持服务器数据集相关的函数计算）
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* @return
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*/
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public static NameSpace getServerTableDataNameSpace(){
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return TableDataNameSpace.getInstance();
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}
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}
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