org.apache.calcite.sql.advise

Class SqlSimpleParser

java.lang.Object

org.apache.calcite.sql.advise.SqlSimpleParser

public class SqlSimpleParser
extends Object

A simple parser that takes an incomplete and turn it into a syntactically correct statement. It is used in the SQL editor user-interface.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SqlSimpleParser.IdToken
(package private) static class	SqlSimpleParser.Query
static class	SqlSimpleParser.Token
static class	SqlSimpleParser.Tokenizer
(package private) static class	SqlSimpleParser.TokenType

Field Summary

Fields

Modifier and Type	Field and Description
private String	hintToken

Constructor Summary

Constructors

Constructor and Description
SqlSimpleParser(String hintToken) Creates a SqlSimpleParser

Method Summary

Modifier and Type	Method and Description
private void	consumeQuery(ListIterator<SqlSimpleParser.Token> iter, List<SqlSimpleParser.Token> outList)
private void	consumeSelect(ListIterator<SqlSimpleParser.Token> iter, List<SqlSimpleParser.Token> outList)
String	simplifySql(String sql) Turns a partially completed or syntactically incorrect sql statement into a simplified, valid one that can be validated
String	simplifySql(String sql, int cursor) Turns a partially completed or syntactically incorrect sql statement into a simplified, valid one that can be passed into getCompletionHints().

Methods inherited from class java.lang.Object

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

Field Detail

hintToken

private final String hintToken

Constructor Detail

SqlSimpleParser

public SqlSimpleParser(String hintToken)

Creates a SqlSimpleParser

Parameters:

hintToken - Hint token

Method Detail

simplifySql

public String simplifySql(String sql,
                          int cursor)

Turns a partially completed or syntactically incorrect sql statement into a simplified, valid one that can be passed into getCompletionHints().

Parameters:

sql - A partial or syntactically incorrect sql statement

cursor - to indicate column position in the query at which completion hints need to be retrieved.

Returns:

a completed, valid (and possibly simplified SQL statement

simplifySql

public String simplifySql(String sql)

Turns a partially completed or syntactically incorrect sql statement into a simplified, valid one that can be validated

Parameters:

sql - A partial or syntactically incorrect sql statement

Returns:

a completed, valid (and possibly simplified) SQL statement

consumeQuery

private void consumeQuery(ListIterator<SqlSimpleParser.Token> iter,
                          List<SqlSimpleParser.Token> outList)

consumeSelect

private void consumeSelect(ListIterator<SqlSimpleParser.Token> iter,
                           List<SqlSimpleParser.Token> outList)