org.eigenbase.sql.parser
Class SqlAbstractParserImpl

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

Direct Known Subclasses:

FarragoAbstractParserImpl, SqlParserImpl

public abstract class SqlAbstractParserImpl
extends Object

Abstract base for parsers generated from CommonParser.jj.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/sql/parser/SqlAbstractParserImpl.java#20 $

Author:

John V. Sichi

Nested Class Summary

protected static class	SqlAbstractParserImpl.ExprContext Type-safe enum for context of acceptable expressions.
static interface	SqlAbstractParserImpl.Metadata Metadata about the parser.
static class	SqlAbstractParserImpl.MetadataImpl Default implementation of the SqlAbstractParserImpl.Metadata interface.

Field Summary

protected int	nDynamicParams
protected SqlStdOperatorTable	opTab Operator table containing the standard SQL operators and functions.
private static Set<String>	sql92ReservedWordSet

Constructor Summary

SqlAbstractParserImpl()

Method Summary

protected SqlCall	createCall(SqlIdentifier funName, SqlParserPos pos, SqlFunctionCategory funcType, SqlLiteral functionQualifier, SqlNode[] operands) Creates a call.
abstract SqlAbstractParserImpl.Metadata	getMetadata() Returns metadata about this parser: keywords, etc.
static Set<String>	getSql92ReservedWords()
abstract SqlParseException	normalizeException(Throwable ex) Removes or transforms misleading information from a parse exception or error, and converts to SqlParseException.
abstract void	ReInit(Reader reader) Reinitializes parser with new input.
abstract void	setTabSize(int tabSize) Sets the tab stop size.

Methods inherited from class java.lang.Object

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

Field Detail

sql92ReservedWordSet

private static final Set<String> sql92ReservedWordSet

opTab

protected final SqlStdOperatorTable opTab

Operator table containing the standard SQL operators and functions.

nDynamicParams

protected int nDynamicParams

Constructor Detail

SqlAbstractParserImpl

public SqlAbstractParserImpl()

Method Detail

getSql92ReservedWords

public static Set<String> getSql92ReservedWords()

Returns:

immutable set of all reserved words defined by SQL-92

Reference to SQL-92 standard:

Section 5.2

createCall

protected SqlCall createCall(SqlIdentifier funName,
                             SqlParserPos pos,
                             SqlFunctionCategory funcType,
                             SqlLiteral functionQualifier,
                             SqlNode[] operands)

Creates a call.

Parameters:

funName - Name of function

pos - Position in source code

funcType - Type of function

functionQualifier - Qualifier

operands - Operands to call

Returns:

Call

getMetadata

public abstract SqlAbstractParserImpl.Metadata getMetadata()

Returns metadata about this parser: keywords, etc.

normalizeException

public abstract SqlParseException normalizeException(Throwable ex)

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

Parameters:

ex - dirty excn

Returns:

clean excn

ReInit

public abstract void ReInit(Reader reader)

Reinitializes parser with new input.

Parameters:

reader - provides new input

setTabSize

public abstract void setTabSize(int tabSize)

Sets the tab stop size.

Parameters:

tabSize - Tab stop size