AdmQueryCriteriaHelper.java 11 KB

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  1. package com.persagy.proxy.adm.utils;
  2. import cn.hutool.core.map.MapUtil;
  3. import cn.hutool.core.util.ArrayUtil;
  4. import cn.hutool.core.util.StrUtil;
  5. import com.baomidou.mybatisplus.core.toolkit.StringUtils;
  6. import com.fasterxml.jackson.databind.JsonNode;
  7. import com.fasterxml.jackson.databind.node.ArrayNode;
  8. import com.fasterxml.jackson.databind.node.JsonNodeFactory;
  9. import com.fasterxml.jackson.databind.node.ObjectNode;
  10. import com.persagy.proxy.adm.request.AdmQueryCriteria;
  11. import com.persagy.proxy.adm.request.OrderItem;
  12. import com.persagy.proxy.adm.request.QueryCriteria;
  13. import java.math.BigDecimal;
  14. import java.util.ArrayList;
  15. import java.util.HashMap;
  16. import java.util.List;
  17. import java.util.Map;
  18. /**
  19. * ADM通用查询条件
  20. * @author Charlie Yu
  21. * @date 2021-08-16
  22. */
  23. public class AdmQueryCriteriaHelper {
  24. /** 条件匹配字符串 */
  25. private static final String[] COND_STR = {" = "," != "," > "," >= "," < "," <= "," in "," isnull "," contain "," startwith "," endwith "};
  26. /** 需要替换的字段对照 Map<AdmQueryCriteria.name, Map<AdmFieldName, DmpFieldName> */
  27. private static Map<String, Map<String, String>> RENAME_MAP = new HashMap<>(16);
  28. /** 与数据中台的操作参数对照 */
  29. private static Map<String, String> OPERATOR_MAP = new HashMap<>();
  30. static {
  31. OPERATOR_MAP.put("!=", "$ne");
  32. OPERATOR_MAP.put(">", "$gt");
  33. OPERATOR_MAP.put(">=", "$gte");
  34. OPERATOR_MAP.put("<", "$lt");
  35. OPERATOR_MAP.put("<=", "$lte");
  36. OPERATOR_MAP.put("in", "$in");
  37. OPERATOR_MAP.put("contain", "$like");
  38. OPERATOR_MAP.put("startwith", "$likeLeft");
  39. OPERATOR_MAP.put("endwith", "$likeRight");
  40. }
  41. /**
  42. * 将ADM的查询条件转换为DMP的
  43. * 调用前注意:
  44. * - 调用前将name赋值,才会将条件中adm的属性替换为dmp的属性
  45. * - 统计查询时将isOnlyCount设置为true
  46. * 调用后注意(需要调用者自行处理的):
  47. * - 不处理级联,级联应在调用者里处理级联调用转换后查询赋值
  48. * - 不处理projection,查询后自行根据projection筛选返回属性。(dmp只能指定扩展属性,而adm的是针对所有属性的)
  49. * @param admCriteria
  50. * @return
  51. */
  52. public static QueryCriteria toDmpCriteria(AdmQueryCriteria admCriteria) {
  53. QueryCriteria dmpCriteria = new QueryCriteria();
  54. // 拷贝分页
  55. copyPageInfo(admCriteria, dmpCriteria);
  56. // 处理filters
  57. dmpCriteria.setCriteria(toCriteria(admCriteria.getName(), admCriteria.getFilters()));
  58. if(StringUtils.isNotEmpty(admCriteria.getName())){
  59. // 处理name
  60. dmpCriteria.getCriteria().put("objType", admCriteria.getName());
  61. }
  62. // 处理排序
  63. dmpCriteria.setOrders(toOrderItem(admCriteria.getOrders()));
  64. // 处理统计
  65. dmpCriteria.setOnlyCount(admCriteria.isOnlyCount());
  66. return dmpCriteria;
  67. }
  68. /**
  69. * 处理分页信息
  70. * @param admCriteria
  71. * @param dmpCriteria
  72. */
  73. private static void copyPageInfo(AdmQueryCriteria admCriteria, QueryCriteria dmpCriteria) {
  74. // 页码
  75. Integer pageNumber = admCriteria.getPageNumber();
  76. if(pageNumber == null || pageNumber < 1) {
  77. pageNumber = 1;
  78. }
  79. dmpCriteria.setPage(pageNumber.longValue());
  80. // 条数
  81. Integer pageSize = admCriteria.getPageSize();
  82. if(pageSize == null || pageSize > admCriteria.getMaxRow()) {
  83. pageSize = admCriteria.getMaxRow();
  84. }
  85. dmpCriteria.setSize(pageSize.longValue());
  86. }
  87. /**
  88. * 排序字符串转换为对象
  89. * @param orderStr
  90. */
  91. private static List<OrderItem> toOrderItem(String orderStr) {
  92. if(StrUtil.isBlank(orderStr)) {
  93. return null;
  94. }
  95. // 按,分隔
  96. String[] orders = StrUtil.split(orderStr, ",");
  97. List<OrderItem> orderList = new ArrayList<>();
  98. for(String order:orders) {
  99. // 按空格分隔
  100. String[] items = StrUtil.split(order, " ");
  101. // 去除空串
  102. items = ArrayUtil.removeEmpty(items);
  103. if(ArrayUtil.isEmpty(items)) {
  104. continue;
  105. }
  106. OrderItem orderItem = new OrderItem();
  107. // 第一位为排序字段
  108. orderItem.setColumn(items[0].trim());
  109. // 只有一位 或 第二位不是desc 表示为升序
  110. orderItem.setAsc(items.length <= 1 || !"desc".equalsIgnoreCase(items[1]));
  111. orderList.add(orderItem);
  112. }
  113. return orderList;
  114. }
  115. /**
  116. * 将ADM过滤条件转换为DMP查询
  117. * 由于数据中台不支持or条件,因此不能转换为中台的KV条件形式,只能转换为sql
  118. * @param filters
  119. * @return
  120. */
  121. private static ObjectNode toCriteria(String name, String filters) {
  122. ObjectNode criteria = JsonNodeFactory.instance.objectNode();
  123. // filters格式参考:http://doc.sagacloud.cn/doc/service/dev/lib/web/filters.html#%E8%BF%87%E6%BB%A4%E6%9D%A1%E4%BB%B6
  124. if(StrUtil.isBlank(filters)) {
  125. return criteria;
  126. }
  127. // 替换逻辑运算符: && || ;
  128. filters = StrUtil.replace(filters, "&&", " and ");
  129. filters = StrUtil.replace(filters, "||", " or ");
  130. filters = StrUtil.replace(filters, ";", " and ");
  131. // 处理[]
  132. filters = StrUtil.replace(filters, "[", " ( ");
  133. filters = StrUtil.replace(filters, "]", " ) ");
  134. // 查找下一个 连接点[and or为连接点]
  135. ensureOrCondition(name, criteria, filters);
  136. return criteria;
  137. }
  138. /**
  139. * 从or条件中截取表达式
  140. * @param criteria
  141. * @param filters
  142. */
  143. private static void ensureOrCondition(String name, ObjectNode criteria, String filters) {
  144. int orIndex = StrUtil.indexOfIgnoreCase(filters, " or ", 0);
  145. String orLeft = orIndex < 0 ? filters : StrUtil.subPre(filters, orIndex);
  146. ensureAndCondition(name, criteria, orLeft);
  147. // 有or条件
  148. if(orIndex >= 0) {
  149. String orRight = StrUtil.subSuf(filters, orIndex + 4);
  150. ObjectNode node = criteria.putObject("$or");
  151. // 右侧字符串继续递归处理
  152. ensureOrCondition(name, node, orRight);
  153. }
  154. }
  155. /**
  156. * 从and条件中截取表达式
  157. * @param criteria
  158. * @param filters
  159. */
  160. private static void ensureAndCondition(String name, ObjectNode criteria, String filters) {
  161. int andIndex = StrUtil.indexOfIgnoreCase(filters, " and ", 0);
  162. String andLeft = andIndex < 0 ? filters : StrUtil.subPre(filters, andIndex);
  163. // 处理左侧条件
  164. ensureAndExpress(name, criteria, andLeft);
  165. // 处理右侧条件
  166. if(andIndex >= 0) {
  167. String andRight = StrUtil.subSuf(filters, andIndex+5);
  168. // 递归处理and
  169. ensureAndCondition(name, criteria, andRight);
  170. }
  171. }
  172. /**
  173. * 处理表达式
  174. * @param criteria
  175. * @param express
  176. */
  177. private static void ensureAndExpress(String name, ObjectNode criteria, String express) {
  178. String cond = StrUtil.getContainsStr(express, COND_STR);
  179. if(StrUtil.isBlank(cond)) {
  180. return;
  181. }
  182. int condIndex = StrUtil.indexOfIgnoreCase(express, cond, 0);
  183. String condLeft = StrUtil.subPre(express, condIndex).trim();
  184. String condRight = StrUtil.subSuf(express, condIndex+cond.length()).trim();
  185. addCondition(name, criteria, condLeft, cond.trim(), condRight);
  186. }
  187. /**
  188. * 拼接条件
  189. * @param criteria
  190. * @param column
  191. * @param operator
  192. * @param value
  193. */
  194. private static void addCondition(String name, ObjectNode criteria, String column, String operator, String value) {
  195. // 替换列名
  196. column = replaceColumns(name, column);
  197. if("=".equals(operator)) {
  198. criteria.set(column, getJsonNode(criteria, value));
  199. } else if("in".equals(operator)) {
  200. // 按,分隔
  201. String[] splits = StrUtil.split(value, ",");
  202. if(ArrayUtil.isEmpty(splits)) {
  203. return;
  204. }
  205. ArrayNode node = criteria.putArray(column);
  206. for(String split:splits) {
  207. // 去掉所有的() 即为值
  208. split = StrUtil.removeAll(split, '(',')');
  209. node.add(getJsonNode(criteria, split.trim()));
  210. }
  211. } else if("isnull".equals(operator)) {
  212. ObjectNode node = criteria.putObject(column);
  213. node.put("$null", true);
  214. } else {
  215. ObjectNode node = criteria.putObject(column);
  216. node.set(OPERATOR_MAP.get(operator), getJsonNode(node, value));
  217. }
  218. }
  219. /**
  220. * 取Json值对象
  221. * @param criteria
  222. * @param value
  223. * @return
  224. */
  225. private static JsonNode getJsonNode(ObjectNode criteria, String value) {
  226. if(StrUtil.isBlank(value)) {
  227. return criteria.nullNode();
  228. }
  229. // 字符串
  230. if(StrUtil.startWith(value, "'") && StrUtil.endWith(value, "'")) {
  231. return criteria.textNode(StrUtil.sub(value, 1, value.length()-1));
  232. }
  233. // 数值
  234. if (StrUtil.contains(value, ".")) {
  235. try {
  236. BigDecimal no = new BigDecimal(value);
  237. return criteria.numberNode(no);
  238. } catch (NumberFormatException e) {
  239. }
  240. }
  241. // 整型
  242. try {
  243. Integer no = Integer.valueOf(value);
  244. return criteria.numberNode(no);
  245. } catch (NumberFormatException e) {
  246. }
  247. return criteria.nullNode();
  248. }
  249. /**
  250. * 替换属性称名
  251. * @param name
  252. * @param column
  253. * @return
  254. */
  255. private static String replaceColumns(String name, String column) {
  256. Map<String, String> fieldMap = getRenameFields(name);
  257. // 没有对照则使用原本的
  258. if(MapUtil.isEmpty(fieldMap) || !fieldMap.containsKey(column)) {
  259. return column;
  260. }
  261. return fieldMap.get(column);
  262. }
  263. /**
  264. * 获取更名对照
  265. * @param name
  266. * @return
  267. */
  268. private static Map<String, String> getRenameFields(String name) {
  269. // 获取通用对照
  270. Map<String, String> commonMap = getRenameMap().get("COMMON");
  271. // 获取此类型的对照
  272. Map<String, String> nameMap = getRenameMap().get(name);
  273. if(MapUtil.isEmpty(nameMap)) {
  274. return commonMap;
  275. }
  276. Map<String, String> rsMap = new HashMap<>();
  277. rsMap.putAll(commonMap);
  278. rsMap.putAll(nameMap);
  279. return rsMap;
  280. }
  281. /**
  282. * 获取通用Map
  283. * @return
  284. */
  285. private static Map<String, Map<String, String>> getRenameMap() {
  286. if(MapUtil.isEmpty(RENAME_MAP)) {
  287. // COMMON表示通用对照
  288. Map<String, String> commonMap = new HashMap<>();
  289. commonMap.put("createTime", "creationTime");
  290. commonMap.put("lastUpdate", "modifiedTime");
  291. RENAME_MAP.put("COMMON", commonMap);
  292. }
  293. return RENAME_MAP;
  294. }
  295. }