Package ai.dat.core.semantic

Class SqlParserWrapper

java.lang.Object

ai.dat.core.semantic.SqlParserWrapper

public class SqlParserWrapper
extends Object

SQL解析器，基于Apache Calcite实现 用于解析语义SQL并构建AST

Constructor Summary

Constructors

Constructor	Description
SqlParserWrapper()
SqlParserWrapper(org.apache.calcite.config.Lex lex)
SqlParserWrapper(org.apache.calcite.sql.parser.SqlParser.Config config)

Method Summary

Modifier and Type	Method	Description
static SqlParserWrapper	forDialect(org.apache.calcite.sql.SqlDialect sqlDialect)
org.apache.calcite.sql.SqlNode	parseExpression(String sqlExpr)	解析SQL表达式
org.apache.calcite.sql.SqlNode	parseQuery(String sqlQuery)	解析SQL查询语句

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SqlParserWrapper

public SqlParserWrapper()

SqlParserWrapper

public SqlParserWrapper(org.apache.calcite.config.Lex lex)

SqlParserWrapper

public SqlParserWrapper(org.apache.calcite.sql.parser.SqlParser.Config config)

Method Details

forDialect

public static SqlParserWrapper forDialect(org.apache.calcite.sql.SqlDialect sqlDialect)

parseQuery

public org.apache.calcite.sql.SqlNode parseQuery(String sqlQuery)
                                          throws org.apache.calcite.sql.parser.SqlParseException

解析SQL查询语句

Parameters:

sqlQuery - SQL查询语句

Returns:

SqlNode AST节点

Throws:

org.apache.calcite.sql.parser.SqlParseException - 解析异常

parseExpression

public org.apache.calcite.sql.SqlNode parseExpression(String sqlExpr)
                                               throws org.apache.calcite.sql.parser.SqlParseException

解析SQL表达式

Parameters:

sqlExpr -

Returns:

Throws:

org.apache.calcite.sql.parser.SqlParseException