net.sf.saffron.sql.parser
Class SqlParser

java.lang.Object
  |
  +--net.sf.saffron.sql.parser.SqlParser

public class SqlParser

extends Object

A SqlParser parses a SQL statement.

Since:

Mar 18, 2003$

Version:

$Id: //open/saffron/src/net/sf/saffron/sql/parser/SqlParser.java#2 $

Author:

jhyde$

Field Summary

private Parser

parser

Constructor Summary

SqlParser(Reader reader)
Creats a SqlParser which reads input from a reader.

SqlParser(String s)
Creats a SqlParser which reads input from a string.

Method Summary

SqlNode	parseExpression() Parses a SQL expression.
SqlNode	parseQuery() Parses a SELECT statement.
SqlNode	parseStmt() Parses an SQL statement.

Methods inherited from class java.lang.Object

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

Field Detail

parser

private final Parser parser

Constructor Detail

SqlParser

public SqlParser(String s)

Creats a SqlParser which reads input from a string.

SqlParser

public SqlParser(Reader reader)

Creats a SqlParser which reads input from a reader.

Method Detail

parseExpression

public SqlNode parseExpression()
                        throws ParseException

Parses a SQL expression.

Throws:

ParseException - if there is a parse error

parseQuery

public SqlNode parseQuery()
                   throws ParseException

Parses a SELECT statement.

Returns:

A SqlSelect for a regular SELECT statement; a SqlBinaryOperator for a UNION, INTERSECT, or EXCEPT.

Throws:

ParseException - if there is a parse error

parseStmt

public SqlNode parseStmt()
                  throws ParseException

Parses an SQL statement.

Returns:

top-level SqlNode representing stmt

Throws:

ParseException - if there is a parse error