优化 where 和 JOIN 解析代码
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TommyLemon
parent
cf7bdd74e4
commit
3ea3e61215
@ -2585,6 +2585,87 @@ public abstract class AbstractSQLConfig implements SQLConfig {
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setPreparedValueList(prepreadValues);
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}
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whereString = concatJoinWhereString(whereString);
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String result = StringUtil.isEmpty(whereString, true) ? "" : (hasPrefix ? " WHERE " : "") + whereString;
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if (result.isEmpty() && RequestMethod.isQueryMethod(method) == false) {
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throw new UnsupportedOperationException("写操作请求必须带条件！！！");
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}
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return result;
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}
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public String getWhereString(boolean hasPrefix, RequestMethod method, Map<String, Object> where, Map<String, List<String>> combine, List<Join> joinList, boolean verifyName) throws Exception {
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Set<Entry<String, List<String>>> combineSet = combine == null ? null : combine.entrySet();
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if (combineSet == null || combineSet.isEmpty()) {
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Log.w(TAG, "getWhereString combineSet == null || combineSet.isEmpty() >> return \"\";");
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return "";
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}
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List<String> keyList;
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String whereString = "";
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boolean isCombineFirst = true;
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int logic;
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boolean isItemFirst;
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String c;
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String cs;
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for (Entry<String, List<String>> ce : combineSet) {
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keyList = ce == null ? null : ce.getValue();
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if (keyList == null || keyList.isEmpty()) {
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continue;
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}
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if ("|".equals(ce.getKey())) {
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logic = Logic.TYPE_OR;
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}
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else if ("!".equals(ce.getKey())) {
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logic = Logic.TYPE_NOT;
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}
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else {
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logic = Logic.TYPE_AND;
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}
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isItemFirst = true;
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cs = "";
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for (String key : keyList) {
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c = getWhereItem(key, where.get(key), method, verifyName);
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if (StringUtil.isEmpty(c, true)) {//避免SQL条件连接错误
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continue;
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}
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cs += (isItemFirst ? "" : (Logic.isAnd(logic) ? AND : OR)) + "(" + c + ")";
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isItemFirst = false;
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}
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if (StringUtil.isEmpty(cs, true)) {//避免SQL条件连接错误
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continue;
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}
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whereString += (isCombineFirst ? "" : AND) + (Logic.isNot(logic) ? NOT : "") + " ( " + cs + " ) ";
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isCombineFirst = false;
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}
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whereString = concatJoinWhereString(whereString);
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String s = StringUtil.isEmpty(whereString, true) ? "" : (hasPrefix ? " WHERE " : "") + whereString;
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if (s.isEmpty() && RequestMethod.isQueryMethod(method) == false) {
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throw new UnsupportedOperationException("写操作请求必须带条件！！！");
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}
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return s;
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}
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protected String concatJoinWhereString(String whereString) throws Exception {
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List<Join> joinList = getJoinList();
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if (joinList != null) {
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String newWs = "";
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@ -2711,208 +2792,10 @@ public abstract class AbstractSQLConfig implements SQLConfig {
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}
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}
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String result = StringUtil.isEmpty(whereString, true) ? "" : (hasPrefix ? " WHERE " : "") + whereString;
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if (result.isEmpty() && RequestMethod.isQueryMethod(method) == false) {
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throw new UnsupportedOperationException("写操作请求必须带条件！！！");
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}
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return result;
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return whereString;
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}
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public String getWhereString(boolean hasPrefix, RequestMethod method, Map<String, Object> where, Map<String, List<String>> combine, List<Join> joinList, boolean verifyName) throws Exception {
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Set<Entry<String, List<String>>> combineSet = combine == null ? null : combine.entrySet();
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if (combineSet == null || combineSet.isEmpty()) {
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Log.w(TAG, "getWhereString combineSet == null || combineSet.isEmpty() >> return \"\";");
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return "";
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}
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List<String> keyList;
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String whereString = "";
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boolean isCombineFirst = true;
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int logic;
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boolean isItemFirst;
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String c;
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String cs;
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for (Entry<String, List<String>> ce : combineSet) {
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keyList = ce == null ? null : ce.getValue();
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if (keyList == null || keyList.isEmpty()) {
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continue;
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}
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if ("|".equals(ce.getKey())) {
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logic = Logic.TYPE_OR;
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}
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else if ("!".equals(ce.getKey())) {
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logic = Logic.TYPE_NOT;
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}
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else {
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logic = Logic.TYPE_AND;
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}
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isItemFirst = true;
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cs = "";
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for (String key : keyList) {
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c = getWhereItem(key, where.get(key), method, verifyName);
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if (StringUtil.isEmpty(c, true)) {//避免SQL条件连接错误
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continue;
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}
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cs += (isItemFirst ? "" : (Logic.isAnd(logic) ? AND : OR)) + "(" + c + ")";
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isItemFirst = false;
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}
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if (StringUtil.isEmpty(cs, true)) {//避免SQL条件连接错误
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continue;
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}
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whereString += (isCombineFirst ? "" : AND) + (Logic.isNot(logic) ? NOT : "") + " ( " + cs + " ) ";
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isCombineFirst = false;
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}
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if (joinList != null) {
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String newWs = "";
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String ws = whereString;
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List<Object> newPvl = new ArrayList<>();
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List<Object> pvl = new ArrayList<>(preparedValueList);
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SQLConfig jc;
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String js;
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boolean changed = false;
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//各种 JOIN 没办法统一用 & | ！连接，只能按优先级，和 @combine 一样?
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for (Join j : joinList) {
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String jt = j.getJoinType();
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switch (jt) {
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case "*": // CROSS JOIN
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case "@": // APP JOIN
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case "<": // LEFT JOIN
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case ">": // RIGHT JOIN
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break;
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case "&": // INNER JOIN: A & B
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case "": // FULL JOIN: A | B
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case "|": // FULL JOIN: A | B
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case "!": // OUTER JOIN: ! (A | B)
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case "^": // SIDE JOIN: ! (A & B)
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case "(": // ANTI JOIN: A & ! B
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case ")": // FOREIGN JOIN: B & ! A
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jc = j.getJoinConfig();
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boolean isMain = jc.isMain();
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jc.setMain(false).setPrepared(isPrepared()).setPreparedValueList(new ArrayList<Object>());
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js = jc.getWhereString(false);
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jc.setMain(isMain);
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boolean isOuterJoin = "!".equals(jt);
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boolean isSideJoin = "^".equals(jt);
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boolean isAntiJoin = "(".equals(jt);
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boolean isForeignJoin = ")".equals(jt);
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boolean isWsEmpty = StringUtil.isEmpty(ws, true);
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if (isWsEmpty) {
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if (isOuterJoin) { // ! OUTER JOIN: ! (A | B)
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throw new NotExistException("no result for ! OUTER JOIN( ! (A | B) ) when A or B is empty!");
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}
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if (isForeignJoin) { // ) FOREIGN JOIN: B & ! A
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throw new NotExistException("no result for ) FOREIGN JOIN( B & ! A ) when A is empty!");
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}
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}
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if (StringUtil.isEmpty(js, true)) {
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if (isOuterJoin) { // ! OUTER JOIN: ! (A | B)
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throw new NotExistException("no result for ! OUTER JOIN( ! (A | B) ) when A or B is empty!");
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}
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if (isAntiJoin) { // ( ANTI JOIN: A & ! B
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throw new NotExistException("no result for ( ANTI JOIN( A & ! B ) when B is empty!");
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}
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if (isWsEmpty) {
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if (isSideJoin) {
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throw new NotExistException("no result for ^ SIDE JOIN( ! (A & B) ) when both A and B are empty!");
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}
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}
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else {
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if (isSideJoin || isForeignJoin) {
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newWs += " ( " + getCondition(true, ws) + " ) ";
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newPvl.addAll(pvl);
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newPvl.addAll(jc.getPreparedValueList());
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changed = true;
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}
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}
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continue;
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}
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if (StringUtil.isEmpty(newWs, true) == false) {
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newWs += AND;
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}
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if (isAntiJoin) { // ( ANTI JOIN: A & ! B
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newWs += " ( " + ( isWsEmpty ? "" : ws + AND ) + NOT + " ( " + js + " ) " + " ) ";
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}
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else if (isForeignJoin) { // ) FOREIGN JOIN: (! A) & B // preparedValueList.add 不好反过来 B & ! A
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newWs += " ( " + NOT + " ( " + ws + " ) ) " + AND + " ( " + js + " ) ";
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}
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else if (isSideJoin) { // ^ SIDE JOIN: ! (A & B)
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//MySQL 因为 NULL 值处理问题，(A & ! B) | (B & ! A) 与 ! (A & B) 返回结果不一样，后者往往更多
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newWs += " ( " + getCondition(
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true,
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( isWsEmpty ? "" : ws + AND ) + " ( " + js + " ) "
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) + " ) ";
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}
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else { // & INNER JOIN: A & B; | FULL JOIN: A | B; OUTER JOIN: ! (A | B)
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logic = Logic.getType(jt);
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newWs += " ( "
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+ getCondition(
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Logic.isNot(logic),
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ws
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+ ( isWsEmpty ? "" : (Logic.isAnd(logic) ? AND : OR) )
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+ " ( " + js + " ) "
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)
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+ " ) ";
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}
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newPvl.addAll(pvl);
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newPvl.addAll(jc.getPreparedValueList());
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changed = true;
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break;
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default:
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throw new UnsupportedOperationException(
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"join:value 中 value 里的 " + jt + "/" + j.getPath()
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+ "错误！不支持 " + jt + " 等 [ @ APP, < LEFT, > RIGHT, * CROSS"
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+ ", & INNER, | FULL, ! OUTER, ^ SIDE, ( ANTI, ) FOREIGN ] 之外的 JOIN 类型 !"
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);
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}
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}
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if (changed) {
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whereString = newWs;
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preparedValueList = newPvl;
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}
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}
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String s = StringUtil.isEmpty(whereString, true) ? "" : (hasPrefix ? " WHERE " : "") + whereString;
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if (s.isEmpty() && RequestMethod.isQueryMethod(method) == false) {
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throw new UnsupportedOperationException("写操作请求必须带条件！！！");
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}
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return s;
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}
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/**
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* @param key
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* @param value
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