Package org.apache.qpid.server.query.engine.parsing

Class ExpressionParser<T,R>

java.lang.Object

org.apache.qpid.server.query.engine.parsing.ExpressionParser<T,R>

All Implemented Interfaces:

ExpressionParserConstants

public class ExpressionParser<T,R>
extends Object
implements ExpressionParserConstants

Simplified SQL parser generated by JavaCC Do not edit this .java file directly - it is autogenerated from ExpressionParser.jj

Field Summary

Fields

Modifier and Type	Field	Description
Token	jj_nt	Next token.
Token	token	Current token.
ExpressionParserTokenManager	token_source	Generated Token Manager.

Fields inherited from interface org.apache.qpid.server.query.engine.parsing.ExpressionParserConstants

ABS, ALL, AND, AS, ASC, ASTERIX, AVG, BETWEEN, BLOCK_COMMENT, CASE, COALESCE, COMMA, CONCAT, COUNT, CURRENT_TIMESTAMP, DATE, DATEADD, DATEDIFF, DAY, DECIMAL_LITERAL, DEFAULT, DESC, DISTINCT, ELSE, END, EOF, ESCAPE, EXCEPT, EXPONENT, EXTRACT, FALSE, FLOATING_POINT_LITERAL, FROM, FUNCTIONNAME, GROUP_BY, HAVING, HEX_LITERAL, HOUR, ID, IN, INTERSECT, IS, JOIN, LBRACKET, LEN, LENGTH, LIKE, LIMIT, LINE_COMMENT, LOWER, LTRIM, MAX, MILLISECOND, MIN, MINUS, MINUTE, MONTH, NOT, NOT_EQUAL, NULL, OCTAL_LITERAL, OFFSET, ON, OR, ORDER_BY, POINT, POSITION, QUOTED_ID, RBRACKET, REPLACE, ROUND, RTRIM, SECOND, SELECT, STRING_LITERAL, SUBSTR, SUBSTRING, SUM, THEN, tokenImage, TRIM, TRUE, TRUNC, UNION, UPPER, WEEK, WHEN, WHERE, WITH, YEAR

Constructor Summary

Constructors

Constructor	Description
ExpressionParser()
ExpressionParser(InputStream stream, Charset encoding)	Constructor with InputStream and supplied encoding
ExpressionParser(Reader stream)	Constructor with InputStream.
ExpressionParser(ExpressionParserTokenManager tm)	Constructor with generated Token Manager.

Method Summary

Modifier and Type	Method	Description
ExpressionNode<T,R>	addExpression()
ExpressionNode<T,R>	andExpression()
ExpressionNode<T,R>	caseExpression()
ExpressionNode<T,R>	chainedVariable()
ExpressionNode<T,R>	comparisonExpression()
ExpressionNode<T,R>	datePart()
String	decode(String source)
void	disable_tracing()	Disable tracing.
void	enable_tracing()	Enable tracing.
ExpressionNode<T,R>	equalityExpression()
ExpressionNode<T,R>	functionDateAdd()
ExpressionNode<T,R>	functionDateDiff()
ExpressionNode<T,R>	functionExpression()
ExpressionNode<T,R>	functionExtract()
ExpressionNode<T,R>	functionPosition()
ParseException	generateParseException()	Generate ParseException.
Token	getNextToken()
Token	getToken(int index)
ExpressionNode<T,R>	groupItem(SelectExpression select)
String	identifier()
ExpressionNode<T,R>	literal()
ExpressionNode<T,R>	multExpr()
OrderItem<T,R>	orderItem()
ExpressionNode<T,R>	orExpression()
Expression<T,R>	parseExpression(String sql)
QueryExpression<T,R>	parseQuery(String sql)
ExpressionNode<T,R>	predicate()
ExpressionNode<T,R>	primaryExpr()
void	projectItem(SelectExpression<T,R> select)
void	projectItems(SelectExpression select)
QueryExpression<T,R>	query()
void	ReInit(InputStream stream, Charset encoding)	Reinitialise
void	ReInit(Reader stream)	Reinitialise
void	ReInit(ExpressionParserTokenManager tm)	Reinitialise
SelectExpression<T,R>	select()
String	stringLiteral()
boolean	trace_enabled()
ExpressionNode<T,R>	unaryExpr()
ExpressionNode<T,R>	variable()
WithItem	withItem()

Methods inherited from class java.lang.Object

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

Field Detail

token_source

public ExpressionParserTokenManager token_source

Generated Token Manager.

token

public Token token

Current token.

jj_nt

public Token jj_nt

Next token.

Constructor Detail

ExpressionParser

public ExpressionParser()

ExpressionParser

public ExpressionParser(InputStream stream,
                        Charset encoding)

Constructor with InputStream and supplied encoding

Parameters:

stream - input stream

encoding - charset to be used. May not be null.

ExpressionParser

public ExpressionParser(Reader stream)

Constructor with InputStream.

Parameters:

stream - char stream

ExpressionParser

public ExpressionParser(ExpressionParserTokenManager tm)

Constructor with generated Token Manager.

Parameters:

tm - Token manager to use

Method Detail

parseQuery

public QueryExpression<T,R> parseQuery(String sql)
                                      throws ParseException

Throws:

ParseException

parseExpression

public Expression<T,R> parseExpression(String sql)
                                      throws ParseException

Throws:

ParseException

decode

public String decode(String source)

query

public final QueryExpression<T,R> query()
                                       throws ParseException

Throws:

ParseException

withItem

public final WithItem withItem()
                        throws ParseException

Throws:

ParseException

orderItem

public final OrderItem<T,R> orderItem()
                                     throws ParseException

Throws:

ParseException

select

public final SelectExpression<T,R> select()
                                         throws ParseException

Throws:

ParseException

projectItems

public final void projectItems(SelectExpression select)
                        throws ParseException

Throws:

ParseException

projectItem

public final void projectItem(SelectExpression<T,R> select)
                       throws ParseException

Throws:

ParseException

groupItem

public final ExpressionNode<T,R> groupItem(SelectExpression select)
                                          throws ParseException

Throws:

ParseException

predicate

public final ExpressionNode<T,R> predicate()
                                          throws ParseException

Throws:

ParseException

orExpression

public final ExpressionNode<T,R> orExpression()
                                             throws ParseException

Throws:

ParseException

andExpression

public final ExpressionNode<T,R> andExpression()
                                              throws ParseException

Throws:

ParseException

equalityExpression

public final ExpressionNode<T,R> equalityExpression()
                                                   throws ParseException

Throws:

ParseException

comparisonExpression

public final ExpressionNode<T,R> comparisonExpression()
                                                     throws ParseException

Throws:

ParseException

addExpression

public final ExpressionNode<T,R> addExpression()
                                              throws ParseException

Throws:

ParseException

multExpr

public final ExpressionNode<T,R> multExpr()
                                         throws ParseException

Throws:

ParseException

unaryExpr

public final ExpressionNode<T,R> unaryExpr()
                                          throws ParseException

Throws:

ParseException

primaryExpr

public final ExpressionNode<T,R> primaryExpr()
                                            throws ParseException

Throws:

ParseException

caseExpression

public final ExpressionNode<T,R> caseExpression()
                                               throws ParseException

Throws:

ParseException

literal

public final ExpressionNode<T,R> literal()
                                        throws ParseException

Throws:

ParseException

stringLiteral

public final String stringLiteral()
                           throws ParseException

Throws:

ParseException

chainedVariable

public final ExpressionNode<T,R> chainedVariable()
                                                throws ParseException

Throws:

ParseException

variable

public final ExpressionNode<T,R> variable()
                                         throws ParseException

Throws:

ParseException

functionExpression

public final ExpressionNode<T,R> functionExpression()
                                                   throws ParseException

Throws:

ParseException

functionDateAdd

public final ExpressionNode<T,R> functionDateAdd()
                                                throws ParseException

Throws:

ParseException

functionDateDiff

public final ExpressionNode<T,R> functionDateDiff()
                                                 throws ParseException

Throws:

ParseException

functionExtract

public final ExpressionNode<T,R> functionExtract()
                                                throws ParseException

Throws:

ParseException

datePart

public final ExpressionNode<T,R> datePart()
                                         throws ParseException

Throws:

ParseException

functionPosition

public final ExpressionNode<T,R> functionPosition()
                                                 throws ParseException

Throws:

ParseException

identifier

public final String identifier()
                        throws ParseException

Throws:

ParseException

ReInit

public void ReInit(InputStream stream,
                   Charset encoding)

Reinitialise

Parameters:

stream - input stream

encoding - charset to be used. May not be null.

ReInit

public void ReInit(Reader stream)

Reinitialise

Parameters:

stream - char stream

ReInit

public void ReInit(ExpressionParserTokenManager tm)

Reinitialise

Parameters:

tm - Token manager to use

getNextToken

public final Token getNextToken()

Returns:

the next Token.

getToken

public final Token getToken(int index)

Parameters:

index - index to be retrieved

Returns:

the specific Token.

generateParseException

public ParseException generateParseException()

Generate ParseException.

Returns:

new Exception object. Never null

trace_enabled

public final boolean trace_enabled()

Returns:

Always false.

enable_tracing

public final void enable_tracing()

Enable tracing.

disable_tracing

public final void disable_tracing()

Disable tracing.