public class TRelationResolver extends TParseTreeVisitor
| Constructor and Description |
|---|
TRelationResolver(TStatementList sqls,
gudusoft.gsqlparser.compiler.TContext scope,
TSQLResolver resolver)
创建关系解析器实例。
|
| Modifier and Type | Method and Description |
|---|---|
void |
postVisit(TCreateTableSqlStatement stmt) |
void |
postVisit(TCTE cte) |
void |
postVisit(TJoinExpr joinExpr) |
void |
postVisit(TMergeInsertClause node) |
void |
postVisit(TMergeSqlStatement stmt) |
void |
postVisit(TSelectSqlStatement stmt) |
void |
postVisit(TTable table) |
void |
preVisit(TCreateTableSqlStatement stmt) |
void |
preVisit(TCTE cte) |
void |
preVisit(TJoinExpr joinExpr) |
void |
preVisit(TMergeInsertClause node) |
void |
preVisit(TMergeSqlStatement stmt) |
void |
preVisit(TPivotClause pivotClause) |
void |
preVisit(TSelectSqlStatement stmt) |
void |
preVisit(TTable node)
处理表节点,根据表类型收集相应的属性。
这是属性收集的核心方法。
|
void |
preVisit(TTableFunction node)
处理struct_t类型的表函数。
初始化函数返回的属性列表。
|
void |
resolve()
解析所有SQL语句中的表关系。
遍历语句树,为每个表节点收集属性。
|
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preVisit, preVisit, preVisit, preVisit, preVisitpublic TRelationResolver(TStatementList sqls, gudusoft.gsqlparser.compiler.TContext scope, TSQLResolver resolver)
sqls - 要分析的SQL语句列表scope - 包含SQL环境的全局上下文public void resolve()
public void preVisit(TTableFunction node)
preVisit in class TParseTreeVisitorpublic void preVisit(TTable node)
preVisit in class TParseTreeVisitorpublic void postVisit(TTable table)
postVisit in class TParseTreeVisitorpublic void preVisit(TJoinExpr joinExpr)
preVisit in class TParseTreeVisitorpublic void preVisit(TPivotClause pivotClause)
preVisit in class TParseTreeVisitorpublic void preVisit(TMergeInsertClause node)
preVisit in class TParseTreeVisitorpublic void postVisit(TMergeInsertClause node)
postVisit in class TParseTreeVisitorpublic void preVisit(TCTE cte)
preVisit in class TParseTreeVisitorpublic void postVisit(TCTE cte)
postVisit in class TParseTreeVisitorpublic void postVisit(TJoinExpr joinExpr)
postVisit in class TParseTreeVisitorpublic void preVisit(TSelectSqlStatement stmt)
preVisit in class TParseTreeVisitorpublic void postVisit(TSelectSqlStatement stmt)
postVisit in class TParseTreeVisitorpublic void preVisit(TMergeSqlStatement stmt)
preVisit in class TParseTreeVisitorpublic void postVisit(TMergeSqlStatement stmt)
postVisit in class TParseTreeVisitorpublic void preVisit(TCreateTableSqlStatement stmt)
preVisit in class TParseTreeVisitorpublic void postVisit(TCreateTableSqlStatement stmt)
postVisit in class TParseTreeVisitor