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refactor(common): 优化SQL解析器中的类型转换和嵌套查询处理
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- 使用模式匹配简化ParenthesedSelect类型的转换
- 改进SetOperationList中子查询的处理逻辑
- 增加对嵌套ParenthesedSelect的递归处理支持
- 优化字段替换功能以支持更复杂的查询结构
- 提高代码可读性和类型安全性
This commit is contained in:
jerryjzhang
2026-04-03 11:59:17 +08:00
parent 8a4bccab10
commit 4379af4bd4
1 changed files with 20 additions and 11 deletions
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31
common/src/main/java/com/tencent/supersonic/common/jsqlparser/SqlReplaceHelper.java
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@@ -118,22 +118,26 @@ public class SqlReplaceHelper {
}
public static void getFromSelect(FromItem fromItem, List<PlainSelect> plainSelectList) {
if (!(fromItem instanceof ParenthesedSelect)) {
if (!(fromItem instanceof ParenthesedSelect parenthesedSelect)) {
return;
}
ParenthesedSelect parenthesedSelect = (ParenthesedSelect) fromItem;
Select select = parenthesedSelect.getSelect();
if (select instanceof PlainSelect) {
PlainSelect plainSelect = (PlainSelect) select;
if (select instanceof PlainSelect plainSelect) {
plainSelectList.add(plainSelect);
getFromSelect(plainSelect.getFromItem(), plainSelectList);
} else if (select instanceof SetOperationList) {
SetOperationList setOperationList = (SetOperationList) select;
} else if (select instanceof SetOperationList setOperationList) {
if (!CollectionUtils.isEmpty(setOperationList.getSelects())) {
setOperationList.getSelects().forEach(subSelectBody -> {
PlainSelect subPlainSelect = (PlainSelect) subSelectBody;
plainSelectList.add(subPlainSelect);
getFromSelect(subPlainSelect.getFromItem(), plainSelectList);
if (subSelectBody instanceof PlainSelect subPlainSelect) {
plainSelectList.add(subPlainSelect);
getFromSelect(subPlainSelect.getFromItem(), plainSelectList);
} else if (subSelectBody instanceof ParenthesedSelect subParenthesedSelect) {
Select innerSelect = subParenthesedSelect.getSelect();
if (innerSelect instanceof PlainSelect innerPlainSelect) {
plainSelectList.add(innerPlainSelect);
getFromSelect(innerPlainSelect.getFromItem(), plainSelectList);
}
}
});
}
}
@@ -188,8 +192,13 @@ public class SqlReplaceHelper {
SetOperationList setOperationList = (SetOperationList) select;
if (!CollectionUtils.isEmpty(setOperationList.getSelects())) {
setOperationList.getSelects().forEach(subSelectBody -> {
PlainSelect subPlainSelect = (PlainSelect) subSelectBody;
replaceFieldsInPlainOneSelect(fieldNameMap, exactReplace, subPlainSelect);
if (subSelectBody instanceof PlainSelect) {
PlainSelect subPlainSelect = (PlainSelect) subSelectBody;
replaceFieldsInPlainOneSelect(fieldNameMap, exactReplace, subPlainSelect);
} else if (subSelectBody instanceof ParenthesedSelect) {
replaceFieldsInPlainOneSelect(fieldNameMap, exactReplace,
((ParenthesedSelect) subSelectBody).getPlainSelect());
}
});
}
}