net.sf.farrago.parser
Class FarragoAbstractParserImpl

java.lang.Object
  org.eigenbase.sql.parser.SqlAbstractParserImpl
      net.sf.farrago.parser.FarragoAbstractParserImpl

Direct Known Subclasses:

FarragoParserImpl, RngParser

public abstract class FarragoAbstractParserImpl
extends SqlAbstractParserImpl

Abstract base for parsers generated from CommonDdlParser.jj. Most of the methods on this class correspond to specific methods generated on subclasses.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/parser/FarragoAbstractParserImpl.java#16 $

Author:

John V. Sichi

Nested Class Summary

Nested classes/interfaces inherited from class org.eigenbase.sql.parser.SqlAbstractParserImpl

SqlAbstractParserImpl.ExprContext, SqlAbstractParserImpl.Metadata, SqlAbstractParserImpl.MetadataImpl

Field Summary

protected boolean	dropRestrict Whether a DROP RESTRICT statement is being processed
protected FarragoSessionParser	farragoParser Public parser interface.

Fields inherited from class org.eigenbase.sql.parser.SqlAbstractParserImpl

nDynamicParams, opTab

Constructor Summary

FarragoAbstractParserImpl()

Method Summary

abstract SqlIdentifier	ContextVariable() Tests whether the current input is a context variable name.
abstract Object	FarragoSqlStmtEof()
abstract SqlParserPos	getCurrentPosition()
FarragoRepos	getRepos()
boolean	isContextVariable(String keyword) Returns whether a keyword is the name of a context variable.
boolean	isNonReserved(String keyword) Returns whether a keyword is a non-reserved word.
boolean	isReservedFunctionName(String keyword) Returns whether a keyword is the name of a reserved function.
DdlCreateStmt	newDdlCreateStmt(CwmModelElement createdElement, DdlReplaceOptions replaceOptions) Creates new DDL Statement for CREATE.
DdlDropStmt	newDdlDropLabelStmt(CwmModelElement droppedElement, boolean restrict) Creates new DDL Statement for DROP LABEL.
DdlDropStmt	newDdlDropStmt(CwmModelElement droppedElement, boolean restrict) Creates new DDL Statement for DROP.
abstract String	NonReservedKeyWord() Tests whether the current input is a non-reserved keyword.
abstract SqlParseException	normalizeException(Throwable e) Removes or transforms misleading information from a parse exception or error, and converts to SqlParseException.
abstract SqlIdentifier	ReservedFunctionName() Tests whether the current input is a reserved function name.
protected void	setDefaultExpression(FemAbstractAttribute attribute, SqlNode defaultClause) Converts the SQL representation of a default value into its catalog representation.
abstract SqlNode	SqlExpressionEof()

Methods inherited from class org.eigenbase.sql.parser.SqlAbstractParserImpl

createCall, getMetadata, getSql92ReservedWords, ReInit, setTabSize

Methods inherited from class java.lang.Object

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

Field Detail

farragoParser

protected FarragoSessionParser farragoParser

Public parser interface.

dropRestrict

protected boolean dropRestrict

Whether a DROP RESTRICT statement is being processed

Constructor Detail

FarragoAbstractParserImpl

public FarragoAbstractParserImpl()

Method Detail

getRepos

public FarragoRepos getRepos()

Returns:

repository accessed by this parser

getCurrentPosition

public abstract SqlParserPos getCurrentPosition()

Returns:

current parser position

SqlExpressionEof

public abstract SqlNode SqlExpressionEof()
                                  throws Exception

Returns:

result of parsing an SQL expression

Throws:

Exception

FarragoSqlStmtEof

public abstract Object FarragoSqlStmtEof()
                                  throws Exception

Returns:

result of parsing a complete statement

Throws:

Exception

NonReservedKeyWord

public abstract String NonReservedKeyWord()
                                   throws Exception

Tests whether the current input is a non-reserved keyword.

Returns:

token if non-reserved

Throws:

Exception - if not a non-reserved keyword

ReservedFunctionName

public abstract SqlIdentifier ReservedFunctionName()
                                            throws Exception

Tests whether the current input is a reserved function name.

Returns:

identifier if a reserved function name

Throws:

Exception - if not a reserved function name

ContextVariable

public abstract SqlIdentifier ContextVariable()
                                       throws Exception

Tests whether the current input is a context variable name.

Returns:

identifier if a context variable name

Throws:

Exception - if not a context variable name

setDefaultExpression

protected void setDefaultExpression(FemAbstractAttribute attribute,
                                    SqlNode defaultClause)

Converts the SQL representation of a default value into its catalog representation.

Parameters:

attribute - attribute for which default value is being defined

defaultClause - SQL representation

normalizeException

public abstract SqlParseException normalizeException(Throwable e)

Description copied from class: SqlAbstractParserImpl

Removes or transforms misleading information from a parse exception or error, and converts to SqlParseException.

Specified by:

normalizeException in class SqlAbstractParserImpl

Parameters:

e - dirty excn

Returns:

clean excn

isNonReserved

public final boolean isNonReserved(String keyword)

Returns whether a keyword is a non-reserved word.

Parameters:

keyword - Keyword

Returns:

Whether the keyword is a non-reserved word.

isReservedFunctionName

public boolean isReservedFunctionName(String keyword)

Returns whether a keyword is the name of a reserved function.

Parameters:

keyword - Keyword

Returns:

Whether the keyword is the name of a reserved function.

isContextVariable

public boolean isContextVariable(String keyword)

Returns whether a keyword is the name of a context variable.

Parameters:

keyword - Keyword

Returns:

Whether the keyword is the name of a context variable.

newDdlDropStmt

public DdlDropStmt newDdlDropStmt(CwmModelElement droppedElement,
                                  boolean restrict)

Creates new DDL Statement for DROP.

Parameters:

droppedElement - catalog element to drop

restrict - whether a DROP RESTRICT statement is being processed

Returns:

DDL Statement for DROP

newDdlCreateStmt

public DdlCreateStmt newDdlCreateStmt(CwmModelElement createdElement,
                                      DdlReplaceOptions replaceOptions)

Creates new DDL Statement for CREATE.

Parameters:

createdElement - catalog element to create

replaceOptions - attributes of CREATE OR REPLACE

Returns:

DDL Statement for CREATE

newDdlDropLabelStmt

public DdlDropStmt newDdlDropLabelStmt(CwmModelElement droppedElement,
                                       boolean restrict)

Creates new DDL Statement for DROP LABEL.

Parameters:

droppedElement - label element to drop

restrict - whether a DROP RESTRICT statement is being processed

Returns:

DDL Statement for DROP LABEL