Package org.aksw.jenax.arq.util.tuple.query

Class TupleQueryImpl<ComponentType>

java.lang.Object

org.aksw.jenax.arq.util.tuple.query.TupleQueryImpl<ComponentType>

Type Parameters:

ComponentType -

All Implemented Interfaces:

TupleQuery<ComponentType>

public class TupleQueryImpl<ComponentType>
extends Object
implements TupleQuery<ComponentType>

Author:

Claus Stadler 11/09/2020

Field Summary

Fields

Modifier and Type	Field	Description
protected int	dimension
protected boolean	distinct
protected List<ComponentType>	pattern
protected int[]	projection

Constructor Summary

Constructors

Constructor	Description
TupleQueryImpl(int dimension)

Method Summary

Modifier and Type	Method	Description
TupleQuery<ComponentType>	addProject(int... tupleIdxs)
TupleQuery<ComponentType>	clearProject()
Set<Integer>	getConstrainedComponents()
ComponentType	getConstraint(int idx)
int	getDimension()	The dimension (number of columns) of the conceptual tuple table this query is intended for
List<ComponentType>	getPattern()
int[]	getProject()	Baseline tuple query execution on a tuple table.
boolean	hasProject()
boolean	isDistinct()
static <T> List<T>	listOfNulls(int size)
TupleQuery<ComponentType>	setConstraint(int idx, ComponentType value)
TupleQuery<ComponentType>	setDistinct(boolean onOrOff)
TupleQuery<ComponentType>	setProject(int... tupleIdxs)	Replaces a projection with the given one
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

dimension

protected int dimension

pattern

protected List<ComponentType> pattern

distinct

protected boolean distinct

projection

protected int[] projection

Constructor Details

TupleQueryImpl

public TupleQueryImpl(int dimension)

Method Details

listOfNulls

public static <T> List<T> listOfNulls(int size)

getDimension

public int getDimension()

Description copied from interface: TupleQuery

The dimension (number of columns) of the conceptual tuple table this query is intended for

Specified by:

getDimension in interface TupleQuery<ComponentType>

setDistinct

public TupleQuery<ComponentType> setDistinct(boolean onOrOff)

Specified by:

setDistinct in interface TupleQuery<ComponentType>

isDistinct

public boolean isDistinct()

Specified by:

isDistinct in interface TupleQuery<ComponentType>

setConstraint

public TupleQuery<ComponentType> setConstraint(int idx,
 ComponentType value)

Specified by:

setConstraint in interface TupleQuery<ComponentType>

getConstraint

public ComponentType getConstraint(int idx)

Specified by:

getConstraint in interface TupleQuery<ComponentType>

getProject

public int[] getProject()

Description copied from interface: TupleQuery

Baseline tuple query execution on a tuple table. Invokes find(...) on the tupleTable and only afterwards applies filtering, projection and distinct on the obtained stream

Specified by:

getProject in interface TupleQuery<ComponentType>

Returns:

A mutable array for configuration of the projection

clearProject

public TupleQuery<ComponentType> clearProject()

Specified by:

clearProject in interface TupleQuery<ComponentType>

getPattern

public List<ComponentType> getPattern()

Specified by:

getPattern in interface TupleQuery<ComponentType>

setProject

public TupleQuery<ComponentType> setProject(int... tupleIdxs)

Description copied from interface: TupleQuery

Replaces a projection with the given one

Specified by:

setProject in interface TupleQuery<ComponentType>

Returns:

hasProject

public boolean hasProject()

Specified by:

hasProject in interface TupleQuery<ComponentType>

getConstrainedComponents

public Set<Integer> getConstrainedComponents()

Specified by:

getConstrainedComponents in interface TupleQuery<ComponentType>

toString

public String toString()

Overrides:

toString in class Object

addProject

public TupleQuery<ComponentType> addProject(int... tupleIdxs)

Specified by:

addProject in interface TupleQuery<ComponentType>