edu.berkeley.cs.db.yfilter.querymodule
Class QueryInMemory

java.lang.Object
  |
  +--edu.berkeley.cs.db.yfilter.querymodule.QueryInMemory

public class QueryInMemory

extends java.lang.Object

in memory representation of a query: all the paths are already indexed in QueryIndex:m_nodes this data structure is the element type of QueryIndex:m_queries for each path, it contains all predicates and their selectivities, path nodes (literally), braching levels for nested paths, joins, etc.

Field Summary

java.util.ArrayList	m_allPredicates
int[]	m_branchingLevels
java.lang.String	m_extraSelectAttr
char	m_extraSelectType
int	m_noPaths
int[]	m_stateIds

Constructor Summary

QueryInMemory()

QueryInMemory(Path[] paths)

Method Summary

java.util.ArrayList	getAllPredicates()
int[]	getBranchingLevels()
int	getNoPaths()
int	getNoPredicates()
int[]	getPathStateIDs()
Predicate[]	getPredicates(int pathId)
boolean	hasExtraSelect()
void	print()
void	printToFile(java.io.PrintWriter out)
void	setExtraSelect(char type, java.lang.String target)
void	setStateIds(int[] stateIds)
java.lang.String	toString() this function implements element filter proposed in XFilter

Methods inherited from class java.lang.Object

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

Field Detail

m_noPaths

public int m_noPaths

m_allPredicates

public java.util.ArrayList m_allPredicates

m_branchingLevels

public int[] m_branchingLevels

m_stateIds

public int[] m_stateIds

m_extraSelectType

public char m_extraSelectType

m_extraSelectAttr

public java.lang.String m_extraSelectAttr

Constructor Detail

QueryInMemory

public QueryInMemory()

QueryInMemory

public QueryInMemory(Path[] paths)

Method Detail

setStateIds

public void setStateIds(int[] stateIds)

setExtraSelect

public void setExtraSelect(char type,
                           java.lang.String target)

getNoPaths

public int getNoPaths()

getPathStateIDs

public int[] getPathStateIDs()

getPredicates

public Predicate[] getPredicates(int pathId)

getAllPredicates

public java.util.ArrayList getAllPredicates()

getNoPredicates

public int getNoPredicates()

getBranchingLevels

public int[] getBranchingLevels()

hasExtraSelect

public boolean hasExtraSelect()

toString

public java.lang.String toString()

this function implements element filter proposed in XFilter

Overrides:

toString in class java.lang.Object

print

public void print()

printToFile

public void printToFile(java.io.PrintWriter out)