org.eigenbase.sql.parser
Class SqlParser

java.lang.Object
  org.eigenbase.sql.parser.SqlParser

public class SqlParser
extends Object

A SqlParser parses a SQL statement.

Since:

Mar 18, 2003

Version:

$Id: //open/dev/farrago/src/org/eigenbase/sql/parser/SqlParser.java#17 $

Author:

jhyde

Field Summary

private String	originalInput
private SqlParserImpl	parser

Constructor Summary

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

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

Method Summary

SqlParserImpl	getParserImpl() Returns the underlying generated parser.
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 SqlParserImpl parser

originalInput

private String originalInput

Constructor Detail

SqlParser

public SqlParser(String s)

Creates a SqlParser which reads input from a string.

SqlParser

public SqlParser(Reader reader)

Creates a SqlParser which reads input from a reader.

Method Detail

parseExpression

public SqlNode parseExpression()
                        throws SqlParseException

Parses a SQL expression.

Throws:

SqlParseException - if there is a parse error

parseQuery

public SqlNode parseQuery()
                   throws SqlParseException

Parses a SELECT statement.

Returns:

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

Throws:

SqlParseException - if there is a parse error

parseStmt

public SqlNode parseStmt()
                  throws SqlParseException

Parses an SQL statement.

Returns:

top-level SqlNode representing stmt

Throws:

SqlParseException - if there is a parse error

getParserImpl

public SqlParserImpl getParserImpl()

Returns the underlying generated parser.