bosent---多表查询

public static Map<String, Object> queryRecruitmentPlanList(DispatchContext dctx, Map<String, Object> context) throws BusinessException {
<span style="white-space:pre"></span>

<span style="white-space:pre">	</span>GenericDelegator delegator = dctx.getDelegator();<span style="color: rgb(51, 51, 255); ">//取得实体引擎实例</span>
List<Map<String,Object>> recruitmentList = FastList.newInstance();
EntityListIterator eli = null;<span style="color: rgb(63, 127, 95); ">//</span><span style="color:#3F7F5F;">实体集合迭代器</span><span style="color:#3F7F5F;">, </span><span style="color:#3F7F5F;">用来操作数据的</span><span style="color:#3F7F5F;">.</span><span style="color:#3F7F5F;">和数据库中的结果集功能类似</span>
Map<String, Object> returnMap = ReturnMapUtil.getSuccessMap();

String recruitmentMonth = StringUtils.objectToString(context.get("recruitmentMonth"));
String recruitmentType = StringUtils.objectToString(context.get("recruitmentType"));
String statusId = StringUtils.objectToString(context.get("statusId"));
String companyId = StringUtils.objectToString(context.get("companyId"));
String departmentId = StringUtils.objectToString(context.get("departmentId"));
String position = StringUtils.objectToString(context.get("position"));

/** 建立动态视图 */
DynamicViewEntity view = new DynamicViewEntity();
view.addMemberEntity("RP","RecruitmentPlan");
view.addAlias("RP","recPlanId");
view.addAlias("RP","recPlanNo");
view.addAlias("RP","companyId");

view.addMemberEntity("R", "Recruitment");
view.addAlias("R","recruitmentId");
view.addAlias("R","recPlanId");
view.addAlias("R","reportDutyDate");
view.addAlias("R","departmentId");
view.addAlias("R","position");
view.addAlias("R","recruitmentNum");
view.addAlias("R","probationerNum");
view.addAlias("R","salaryPoint");
view.addAlias("R","statusId");
view.addAlias("R","recruitmentType");
<span style="background-color: rgb(51, 204, 0);">   <span style="color:#ffffff;">//把两张表连接起来</span></span>
view.addViewLink("RP","R",
Boolean.TRUE, UtilMisc.toList(new ModelKeyMap("recPlanId", "recPlanId")));
List<EntityExpr> conditionList = new FastList<EntityExpr>();
if(UtilValidate.isEmpty(recruitmentMonth)){
throw new BusinessException("计划月份不可以为空");
}
if(UtilValidate.isEmpty(companyId)){
throw new BusinessException("公司id不可以为空");
}
conditionList.add(EntityCondition.makeCondition("recPlanNo", EntityOperator.EQUALS,recruitmentMonth));
conditionList.add(EntityCondition.makeCondition("companyId", EntityOperator.EQUALS,companyId));
if(UtilValidate.isNotEmpty(recruitmentType)){
conditionList.add(EntityCondition.makeCondition("recruitmentType", EntityOperator.EQUALS,recruitmentType));
}
if(UtilValidate.isNotEmpty(statusId)){
conditionList.add(EntityCondition.makeCondition("statusId", EntityOperator.EQUALS,statusId));
}

if(UtilValidate.isNotEmpty(departmentId)){
conditionList.add(EntityCondition.makeCondition("departmentId",
EntityOperator.EQUALS,departmentId));
}
if(UtilValidate.isNotEmpty(position)){
conditionList.add(EntityCondition.makeCondition("position",
EntityOperator.EQUALS,position));
}

<span style="white-space:pre">	</span><span style="color:#3366ff;">//取得查询条件</span>
EntityCondition whereEntityCondition = EntityCondition.makeCondition(conditionList,EntityOperator.AND);
List<String> fieldsToSelect = FastList.newInstance();
fieldsToSelect.add("recPlanId");
fieldsToSelect.add("recPlanNo");
fieldsToSelect.add("companyId");
fieldsToSelect.add("recruitmentId");
fieldsToSelect.add("reportDutyDate");
fieldsToSelect.add("departmentId");
fieldsToSelect.add("position");
fieldsToSelect.add("recruitmentNum");
fieldsToSelect.add("probationerNum");
fieldsToSelect.add("salaryPoint");
fieldsToSelect.add("statusId");
fieldsToSelect.add("recruitmentType");

try {

<span style="color:#ff0000;">//delegator.findListIteratorByCondition(dynamicViewEntity, whereEntityCondition, havingEntityCondition, fieldsToSelect, orderBy, findOptions)</span>
eli = delegator.findListIteratorByCondition(view,whereEntityCondition, null, fieldsToSelect, null, null);
GenericValue genericValue = null;
while((genericValue = eli.next()) != null){
Map<String,Object> recruitmentMap = FastMap.newInstance();
recruitmentMap.put("recruitmentId", StringUtils.objectToString(genericValue.get("recruitmentId")));
recruitmentMap.put("recruitmentMonth", StringUtils.objectToString(genericValue.get("recPlanNo")));
recruitmentMap.put("reportDutyDate", StringUtils.objectToString(genericValue.get("reportDutyDate")));
recruitmentMap.put("departmentId", StringUtils.objectToString(genericValue.get("departmentId")));
recruitmentMap.put("position", StringUtils.objectToString(genericValue.get("position")));
recruitmentMap.put("recruitmentNum", StringUtils.objectToInteger(genericValue.get("recruitmentNum")));
recruitmentMap.put("probationerNum", StringUtils.objectToInteger(genericValue.get("probationerNum")));
recruitmentMap.put("salaryBudget", StringUtils.objectToBigDecimal(genericValue.get("salaryPoint")));
recruitmentMap.put("recruitmentType", StringUtils.objectToString(genericValue.get("recruitmentType")));
recruitmentMap.put("statusId", StringUtils.objectToString(genericValue.get("statusId")));

<span style="white-space:pre">		</span><span style="color:#3333ff;">//Date处理有别于String和Integer,得到日期后，应先判断日期是否为空，如果不空再对其进行格式转换，如果为空，则为其置空。</span>
<span style="color:#ff0000;">  Object reportDutyDate = genericValue.get("reportDutyDate");
if(UtilValidate.isNotEmpty(reportDutyDate)){
recruitmentMap.put("reportDutyDate",DateUtil.toFormatString(reportDutyDate, ConstantBusiness.YYYYMMDD));
}else {
recruitmentMap.put("reportDutyDate","");
}</span>

recruitmentList.add(recruitmentMap);
}
} catch (GenericEntityException e) {
Debug.logError(e,module);
throw new BusinessException("招聘计划列表查询失败");
}finally {

<span style="white-space:pre"></span><div><p align="left"> <span style="white-space:pre">		</span><span style="color:#3F7F5F;">// </span><span style="color:#3F7F5F;">关闭迭代器</span><span style="color:#3F7F5F;">(</span><span style="color:#3F7F5F;">一定要记得关闭哦</span><span style="color:#3F7F5F;">,</span><span style="color:#3F7F5F;">不然就死定了</span><span style="color:#3F7F5F;">)</span></p></div>            if (UtilValidate.isNotEmpty(eli)) {
try {
eli.close();
} catch (GenericEntityException e) {
Debug.logError(e,module);
throw new BusinessException("招聘计划列表查询失败");
}
}
}

/**统计信息查询*/
String helperName = StringUtils.objectToString(SqlLockUtil.getHelperName(delegator));

SQLProcessor sqlp = new SQLProcessor(helperName);
ResultSet rs = null;
try {
StringBuffer sb = new StringBuffer();
sb.append(" select count(DISTINCT DEPARTMENT_ID) depNum ,count(DISTINCT POSITION) posNum ,sum(number) total ");
sb.append(" from ( ");
sb.append(" select rp.COMPANY_ID,r.DEPARTMENT_ID,r.POSITION,sum(r.RECRUITMENT_NUM) number from recruitment_plan rp ,recruitment r ");
sb.append(" where rp.REC_PLAN_ID = r.REC_PLAN_ID and rp.REC_PLAN_NO=? and rp.COMPANY_ID=? ");

if(UtilValidate.isNotEmpty(recruitmentType)){
sb.append(" and RECRUITMENT_TYPE = ? ");
}
if(UtilValidate.isNotEmpty(statusId)){
sb.append(" and STATUS_ID = ? ");
}

if(UtilValidate.isNotEmpty(departmentId)){
sb.append(" and DEPARTMENT_ID = ? ");
}
if(UtilValidate.isNotEmpty(position)){
sb.append(" and POSITION = ? ");
}
sb.append(" group by r.DEPARTMENT_ID,r.POSITION ");
sb.append(" ) c");

sqlp.prepareStatement(sb.toString());
sqlp.setValue(recruitmentMonth);
sqlp.setValue(companyId);
if(UtilValidate.isNotEmpty(recruitmentType)){
sqlp.setValue(recruitmentType);
}
if(UtilValidate.isNotEmpty(statusId)){
sqlp.setValue(statusId);
}

if(UtilValidate.isNotEmpty(departmentId)){
sqlp.setValue(departmentId);
}
if(UtilValidate.isNotEmpty(position)){
sqlp.setValue(position);
}
rs = sqlp.executeQuery();
Integer depNum =null;
Integer posNum =null;
Integer total =null;
if (rs.next()) {
depNum = rs.getInt("depNum");
posNum = rs.getInt("posNum");
total = rs.getInt("total");
returnMap.put("depNum", depNum);
returnMap.put("posNum", posNum);
returnMap.put("total", total);
returnMap.put("companyId", companyId);
returnMap.put("recruitmentMonth", recruitmentMonth);
}

} catch (GenericDataSourceException e) {
Debug.logError(e.getMessage(), module);
throw new BusinessException(ErrorCodeCommon.INV612L01009);
} catch (GenericEntityException e) {
Debug.logError(e.getMessage(), module);
throw new BusinessException(ErrorCodeCommon.INV612L01009);
} catch (SQLException e) {
Debug.logError(e.getMessage(), module);
throw new BusinessException(ErrorCodeCommon.INV612L01009);
}finally {
if(rs != null){
try {
rs.close();
} catch (SQLException e) {
Debug.logError(e.getMessage(), module);
throw new BusinessException(ErrorCodeCMS.CMS612F02184);
}
}
}
returnMap.put("recruitmentList", recruitmentList);
return returnMap;
}