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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public 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 TParseTreeVisitor
public void preVisit(TTable node)
preVisit
in class TParseTreeVisitor
public void postVisit(TTable table)
postVisit
in class TParseTreeVisitor
public void preVisit(TJoinExpr joinExpr)
preVisit
in class TParseTreeVisitor
public void preVisit(TPivotClause pivotClause)
preVisit
in class TParseTreeVisitor
public void preVisit(TMergeInsertClause node)
preVisit
in class TParseTreeVisitor
public void postVisit(TMergeInsertClause node)
postVisit
in class TParseTreeVisitor
public void preVisit(TCTE cte)
preVisit
in class TParseTreeVisitor
public void postVisit(TCTE cte)
postVisit
in class TParseTreeVisitor
public void postVisit(TJoinExpr joinExpr)
postVisit
in class TParseTreeVisitor
public void preVisit(TSelectSqlStatement stmt)
preVisit
in class TParseTreeVisitor
public void postVisit(TSelectSqlStatement stmt)
postVisit
in class TParseTreeVisitor
public void preVisit(TMergeSqlStatement stmt)
preVisit
in class TParseTreeVisitor
public void postVisit(TMergeSqlStatement stmt)
postVisit
in class TParseTreeVisitor
public void preVisit(TCreateTableSqlStatement stmt)
preVisit
in class TParseTreeVisitor
public void postVisit(TCreateTableSqlStatement stmt)
postVisit
in class TParseTreeVisitor