weaver-hrm-salary/src/com/engine/salary/service/impl/FormulaRunServiceImpl.java

package com.engine.salary.service.impl;

import com.engine.core.impl.Service;
import com.engine.salary.entity.datacollection.DataCollectionEmployee;
import com.engine.salary.entity.salaryformula.ExpressFormula;
import com.engine.salary.entity.salaryformula.po.FormulaVar;
import com.engine.salary.enums.salaryformula.ReferenceTypeEnum;
import com.engine.salary.formlua.entity.parameter.DataType;
import com.engine.salary.service.FormulaRunService;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.ql.util.express.DefaultContext;
import com.ql.util.express.ExpressRunner;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import weaver.conn.RecordSet;
import weaver.conn.RecordSetDataSource;
import weaver.general.BaseBean;

import java.math.BigDecimal;
import java.util.List;

@Slf4j
public class FormulaRunServiceImpl extends Service implements FormulaRunService {

    private static ExpressRunner runner = new ExpressRunner(true, false);

    private static final ObjectMapper objectMapper = new ObjectMapper();

    private final BaseBean baseBean = new BaseBean();

    private final Boolean isLog = "true".equals(baseBean.getPropValue("hrmSalary", "log"));


    @Override
    public Object run(ExpressFormula expressFormula, List<FormulaVar> formulaVars, DataCollectionEmployee simpleEmployee) throws Exception {

        if (ReferenceTypeEnum.parseByValue(expressFormula.getReferenceType()) == ReferenceTypeEnum.FORMULA) {
            return runFormula(expressFormula, formulaVars);
        }
        if (ReferenceTypeEnum.parseByValue(expressFormula.getReferenceType()) == ReferenceTypeEnum.SQL) {
            return runSQL(expressFormula, formulaVars);
        }
        log.error("express execute fail, {} not in ReferenceTypeEnum ", expressFormula.getReferenceType());
        return StringUtils.EMPTY;
    }

    private String runSQL(ExpressFormula expressFormula, List<FormulaVar> formulaVars) {
        if (isLog) {
            log.info("SQL ExpressFormula {}", expressFormula);
        }

        //解析配置，获取返回值、数据源
        String extendParam = expressFormula.getExtendParam();
        String sqlReturnKey = "";
        String datasourceId = "";
        try {
            JsonNode jsonNode = objectMapper.readTree(extendParam);
            //返回值配置
            JsonNode sqlReturnKeyNode = jsonNode.get("sqlReturnKey");
            if (sqlReturnKeyNode != null) {
                sqlReturnKey = sqlReturnKeyNode.asText().trim();
            }
            //数据源配置
            JsonNode datasourceNode = jsonNode.get("datasource");
            if (datasourceNode != null) {
                JsonNode datasourceIdNode = datasourceNode.get("datasourceId");
                if (datasourceIdNode != null) {
                    datasourceId = datasourceIdNode.asText();
                }
            }
        } catch (JsonProcessingException e) {
            log.error("express execute fail, sql extendParam parse fail", e);
        }

        //解析sql
        String sql = expressFormula.getFormulaRunScript();
        for (FormulaVar formulaVar : formulaVars) {
            sql = sql.replaceAll(formulaVar.getFieldId(), "'" + formulaVar.getContent() + "'");
        }
        if (isLog) {
            log.info("ExpressFormula sql run {}", sql);
        }

        //外部数据源
        if (StringUtils.isNotBlank(datasourceId)) {
            RecordSetDataSource rs = new RecordSetDataSource(datasourceId);
            if (rs.executeSql(sql)) {
                if (rs.next()) {
                    return rs.getString(sqlReturnKey);
                }
            }
        } else {
            RecordSet rs = new RecordSet();
            if (rs.execute(sql)) {
                if (rs.next()) {
                    return rs.getString(sqlReturnKey);
                }
            }
        }
        return StringUtils.EMPTY;
    }

    private Object runFormula(ExpressFormula expressFormula, List<FormulaVar> formulaVars) throws Exception {
        if (isLog) {
            log.info("FORMULA ExpressFormula {} {}", expressFormula.getFormula(), expressFormula.getFormulaRunScript());
        }
        DefaultContext<String, Object> context = new DefaultContext<String, Object>();
        formulaVars.forEach(v -> {
            if (isLog) {
                log.info("FORMULA formulaVar {} - {}", v.getFieldId(), v.getContent());
            }
            if (DataType.NUMBER.equals(v.getFieldType()) && NumberUtils.isCreatable(v.getContent())) {
                context.put(v.getFieldId(), new BigDecimal(v.getContent()));
            } else {
                context.put(v.getFieldId(), v.getContent());
            }
        });
        String formula = expressFormula.getFormulaRunScript();
        return runner.execute(formula, context, null, true, false);
    }
}