ch.ethz.mxquery.opt.expr
Class CompareLiteralIndexSchema

java.lang.Object
  ch.ethz.mxquery.opt.index.IndexSchema
      ch.ethz.mxquery.opt.expr.CompareLiteralIndexSchema

All Implemented Interfaces:

Traversable

public final class CompareLiteralIndexSchema
extends IndexSchema

This is just a simple helper class to transfer all indexable compare literals to the index interface

Constructor Summary

CompareLiteralIndexSchema(int indexNb)
Creates a new IndexSchema for compare literals

Method Summary

java.lang.String	getColumnName(int i)
int	getComparator(int position)
int	getCompareType(int position)
Token[]	getEndTokens()
Token[][]	getEndValues()
CompareLiteral	getLiteral(int i)
Token[]	getStartTokens()
Token[][]	getStartValues()
void	registerValue(CompareLiteral compareLiteral) Registeres a new comparison at the index
void	resetEndPart() Allows to reset the expressions which depend an a end variable
void	resetStartPart() Allows to reset the expressions which depend an a start variable
int	size()
KXmlSerializer	traverse(KXmlSerializer serializer)

Methods inherited from class ch.ethz.mxquery.opt.index.IndexSchema

getId, isGroupByIndex, isSimpleValueIndex, setGroupByIndex, setId, setSimpleValueIndex

Methods inherited from class java.lang.Object

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

Constructor Detail

CompareLiteralIndexSchema

public CompareLiteralIndexSchema(int indexNb)

Creates a new IndexSchema for compare literals

Parameters:

indexNb - Has to be a unique index number

Method Detail

registerValue

public void registerValue(CompareLiteral compareLiteral)

Registeres a new comparison at the index

Parameters:

compareLiteral - The compare literal

size

public int size()

Specified by:

size in class IndexSchema

getLiteral

public CompareLiteral getLiteral(int i)

getColumnName

public java.lang.String getColumnName(int i)

Specified by:

getColumnName in class IndexSchema

getComparator

public int getComparator(int position)

Specified by:

getComparator in class IndexSchema

getCompareType

public int getCompareType(int position)

Specified by:

getCompareType in class IndexSchema

resetStartPart

public void resetStartPart()

Allows to reset the expressions which depend an a start variable

resetEndPart

public void resetEndPart()

Allows to reset the expressions which depend an a end variable

getStartTokens

public Token[] getStartTokens()
                       throws MXQueryException

Throws:

MXQueryException

getStartValues

public Token[][] getStartValues()
                         throws MXQueryException

Throws:

MXQueryException

getEndTokens

public Token[] getEndTokens()
                     throws MXQueryException

Throws:

MXQueryException

getEndValues

public Token[][] getEndValues()
                       throws MXQueryException

Throws:

MXQueryException

traverse

public KXmlSerializer traverse(KXmlSerializer serializer)